ci: adapt go version in github build action

* ref: embed portion of files
* fix: readd pkger
* ref: embed version.txt
* fix: wrong mail template import path
* refactor: get rid of sql-migrate
refactor: get rid of pkger in favor of go embed (resolve #164)
* chore: remove unused var [ci-skip]

Co-authored-by: Ferdinand Mütsch <ferdinand@muetsch.io>

.dockerignore

@@ -0,0 +1,10 @@
+.env
+config*.yml
+!config.default.yml
+*.db
+*.exe
+wakapi
+Dockerfile
+docker-compose.yml
+.dockerignore
+.git*

.env.example

@@ -1,6 +0,0 @@
-ENV=prod
-WAKAPI_DB_USER=myuser
-WAKAPI_DB_PASSWORD=mysecretpassword
-WAKAPI_DB_HOST=localhost
-WAKAPI_DB_PORT=3306
-WAKAPI_DB_NAME=wakapi_db

.github/FUNDING.yml

@@ -1,2 +1,3 @@
-github: n1try
+github: muety
+liberapay: muety
 custom: ['https://paypal.me/ferdinandmuetsch', 'https://www.buymeacoffee.com/n1try']

.github/workflows/docker.yml

@@ -0,0 +1,42 @@
+name: Publish Docker Image
+
+on:
+  push:
+    tags:
+      - '*.*.*'
+      - '!*.*.*-*'
+
+jobs:
+  docker-publish:
+    runs-on: ubuntu-latest
+    steps:
+      # https://stackoverflow.com/questions/58177786
+      - name: Get version
+        run: echo "GIT_TAG=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
+      - name: Build and push to Docker Hub
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: |
+            n1try/wakapi:${{ env.GIT_TAG }}
+            n1try/wakapi:latest
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache

.github/workflows/linux-build-on-release.yml

@@ -0,0 +1,48 @@
+name: Build Wakapi on Linux
+
+on:
+  push:
+    branches:
+  pull_request:
+  release:
+    types:
+      - published
+
+jobs:
+  build-and-release:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.16
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: |
+        go get
+
+    - name: Build
+      run: GO111MODULE=on go build -v .
+
+    - name: Zip executable and sample config
+      if: github.event_name == 'release'
+      run: |
+        cp config.default.yml config.yml
+        zip -9 release.zip wakapi config.yml
+
+    - name: Upload built executable to Release
+      if: github.event_name == 'release'
+      uses: actions/upload-release-asset@v1.0.2
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ github.event.release.upload_url }}
+        asset_path: release.zip
+        asset_name: wakapi_linux_amd64.zip
+        asset_content_type: application/gzip

.github/workflows/win-build-on-release.yml

@@ -0,0 +1,51 @@
+name: Build Wakapi on Windows
+
+on:
+  push:
+    branches:
+  pull_request:
+  release:
+    types:
+      - published
+
+jobs:
+  build-and-release:
+    name: Build
+    runs-on: windows-latest
+    steps:
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.16
+      id: go
+
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v2
+
+    - name: Get dependencies
+      run: |
+        go get
+
+    - name: Enable Go 1.11 modules
+      run: cmd /c "set GO111MODULE=on"
+
+    - name: Build
+      run: go build -v .
+
+    - name: Compress working folder
+      if: github.event_name == 'release'
+      run: |
+        cp .\config.default.yml .\config.yml
+        Compress-Archive -Path .\wakapi.exe, .\config.yml -DestinationPath release.zip
+
+    - name: Upload built executable to Release
+      if: github.event_name == 'release'
+      uses: actions/upload-release-asset@v1.0.2
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ github.event.release.upload_url }}
+        asset_path: release.zip
+        asset_name: wakapi_win_amd64.zip
+        asset_content_type: application/gzip

.gitignore

@@ -1,5 +1,10 @@
 launch.json
 .vscode
-.env
 wakapi
-.idea
+.idea
+build
+*.exe
+*.db
+config*.yml
+!config.default.yml
+pkged.go

Dockerfile

@@ -1,22 +1,50 @@
 # Build Stage
-FROM golang:alpine AS build-env
-ADD . /src
-RUN cd /src && go build -o wakapi
 
-# Final Stage
-# When running the application using `docker run`, you can pass environment variables
-# to override config values from .env using `-e` syntax.
-# Available options are: 
-# – WAKAPI_DB_USER
-# – WAKAPI_DB_PASSWORD
-# – WAKAPI_DB_HOST
-# – WAKAPI_DB_NAME
-FROM alpine
+FROM golang:1.16 AS build-env
+WORKDIR /src
+
+ADD ./go.mod .
+RUN go mod download
+
+RUN curl "https://raw.githubusercontent.com/vishnubob/wait-for-it/master/wait-for-it.sh" -o wait-for-it.sh && \
+    chmod +x wait-for-it.sh
+
+ADD . .
+RUN go build -o wakapi
+
 WORKDIR /app
-COPY --from=build-env /src/wakapi /app/
-COPY --from=build-env /src/config.ini /app/
-COPY --from=build-env /src/.env.example /app/.env
-RUN sed -i 's/listen = 127.0.0.1/listen = 0.0.0.0/g' /app/config.ini
-ADD static /app/static
-ADD wait-for-it.sh .
-ENTRYPOINT ./wait-for-it.sh
+RUN cp /src/wakapi . && \
+    cp /src/config.default.yml config.yml && \
+    sed -i 's/listen_ipv6: ::1/listen_ipv6: /g' config.yml && \
+    cp /src/wait-for-it.sh . && \
+    cp /src/entrypoint.sh .
+
+# Run Stage
+
+# When running the application using `docker run`, you can pass environment variables
+# to override config values using `-e` syntax.
+# Available options can be found in [README.md#-configuration](README.md#-configuration)
+
+FROM debian
+WORKDIR /app
+
+RUN apt update && \
+    apt install -y ca-certificates
+
+# See README.md and config.default.yml for all config options
+ENV ENVIRONMENT prod
+ENV WAKAPI_DB_TYPE sqlite3
+ENV WAKAPI_DB_USER ''
+ENV WAKAPI_DB_PASSWORD ''
+ENV WAKAPI_DB_HOST ''
+ENV WAKAPI_DB_NAME=/data/wakapi.db
+ENV WAKAPI_PASSWORD_SALT ''
+ENV WAKAPI_LISTEN_IPV4 '0.0.0.0'
+ENV WAKAPI_INSECURE_COOKIES 'true'
+ENV WAKAPI_ALLOW_SIGNUP 'true'
+
+COPY --from=build-env /app .
+
+VOLUME /data
+
+ENTRYPOINT ./entrypoint.sh

README.md

@@ -1,75 +1,346 @@
-# 📈 wakapi
-**A minimalist, self-hosted WakaTime-compatible backend for coding statistics**
+<p align="center">
+  <img src="static/assets/images/logo-gh.svg" width="350">
+</p>
 
-![Wakapi screenshot](https://anchr.io/i/bxQ69.png)
+<p align="center">
+  <img src="https://badges.fw-web.space/github/license/muety/wakapi">
+  <a href="https://saythanks.io/to/n1try"><img src="https://badges.fw-web.space/badge/SayThanks.io-%E2%98%BC-1EAEDB.svg"></a>
+  <a href="https://liberapay.com/muety/"><img src="https://badges.fw-web.space/liberapay/receives/muety.svg?logo=liberapay"></a>
+  <img src="https://badges.fw-web.space/endpoint?url=https://wakapi.dev/api/compat/shields/v1/n1try/interval:any/project:wakapi&color=blue&label=wakapi">
+</p>
 
-[![Buy me a coffee](https://www.buymeacoffee.com/assets/img/custom_images/orange_img.png)](https://buymeacoff.ee/n1try)
+<p align="center">
+  <a href="https://goreportcard.com/report/github.com/muety/wakapi"><img src="https://goreportcard.com/badge/github.com/muety/wakapi"></a>
+  <img src="https://badges.fw-web.space/github/languages/code-size/muety/wakapi">
+  <a href="https://sonarcloud.io/dashboard?id=muety_wakapi"><img src="https://sonarcloud.io/api/project_badges/measure?project=muety_wakapi&metric=sqale_index"></a>
+  <a href="https://sonarcloud.io/dashboard?id=muety_wakapi"><img src="https://sonarcloud.io/api/project_badges/measure?project=muety_wakapi&metric=ncloc"></a>
+</p>
 
-## Prerequisites
-### Server
-* Go >= 1.13 (with `$GOPATH` properly set)
-* A MySQL database
+<h3 align="center">A minimalist, self-hosted WakaTime-compatible backend for coding statistics.</h3>
 
-### Client
-* [WakaTime plugin](https://wakatime.com/plugins) for your editor / IDE
+<div align="center">
+  <h3>
+    <a href="https://wakapi.dev">Website</a>
+    <span> | </span>
+    <a href="#-features">Features</a>
+    <span> | </span>
+    <a href="#-how-to-use">How to use</a>
+    <span> | </span>
+    <a href="https://github.com/muety/wakapi/issues">Issues</a>
+    <span> | </span>
+    <a href="https://github.com/muety">Contact</a>
+  </h3>
+</div>
 
-## Usage
-* Create an empty MySQL database
-* Enable Go module support: `export GO111MODULE=on`
-* Get code: `go get github.com/n1try/wakapi`
-* Go to project root: `cd "$GOPATH/src/github.com/n1try/wakapi"`
-* Copy `.env.example` to `.env` and set database credentials
-* Set target port in `config.ini`
-* Build executable: `go build`
-* Run server: `./wakapi`
-* Edit your local `~/.wakatime.cfg` file
-  * `api_url = https://your.server:someport/api/heartbeat`
-  * `api_key = the_api_key_printed_to_the_console_after_starting_the_server`
-* Open [http://localhost:3000](http://localhost:3000) in your browser
+<p align="center">
+  <img src="static/assets/images/screenshot.png" width="500px">
+</p>
 
-### Run with Docker
-* Edit `docker-compose.yml` file and change passwords for the DB
-* Build the container `docker-compose build`
-* Start the application `docker-compose up -d`
-* To get the api key look in the logs `docker-compose logs | grep "API key"`
-* The application should now be running on `localhost:3000`
+## Table of Contents
+* [User Survey](#-user-survey)
+* [Features](#-features)
+* [Roadmap](#-roadmap)
+* [How to use](#-how-to-use)
+* [Configuration Options](#-configuration-options)
+* [API Endpoints](#-api-endpoints)
+* [Integrations](#-integrations)
+* [Best Practices](#-best-practices)
+* [Developer Notes](#-developer-notes)
+* [Support](#-support)
+* [FAQs](#-faqs)
 
+Further instructions can be found in the [Wiki](https://github.com/muety/wakapi/wiki).
 
-### User Accounts
-* When starting wakapi for the first time, a default user _**admin**_ with password _**admin**_ is created. The corresponding API key is printed to the console.
-* Additional users, at the moment, can be added only via SQL statements on your database, like this:
-    * Connect to your database server: `mysql -u yourusername -p -H your.hostname` (alternatively use GUI tools like _MySQL Workbench_)
-    * Select your database: `USE yourdatabasename;`
-    * Add the new user: `INSERT INTO users (id, password, api_key) VALUES ('your_nickname', MD5('your_password'), '728f084c-85e0-41de-aa2a-b6cc871200c1');` (the latter value should be a random [UUIDv4](https://tools.ietf.org/html/rfc4122), as can be found in your `~/.wakatime.cfg`)
+## 📬 **User Survey**
+I'd love to get some community feedback from active Wakapi users. If you want, please participate in the recent [user survey](https://github.com/muety/wakapi/issues/82). Thanks a lot!
 
-### Aliases
-There is an option to add aliases for project names, editors, operating systems and languages. For instance, if you want to map two projects – `myapp-frontend` and `myapp-backend` – two a common project name – `myapp-web` – in your statistics, you can add project aliases.
+## 🚀 Features
+* ✅ 100 % free and open-source
+* ✅ Built by developers for developers
+* ✅ Statistics for projects, languages, editors, hosts and operating systems
+* ✅ Badges
+* ✅ REST API
+* ✅ Partially compatible with WakaTime
+* ✅ WakaTime integration
+* ✅ Support for Prometheus exports
+* ✅ Lightning fast
+* ✅ Self-hosted
 
-At the moment, this can only be done via raw database queries. See [_User Accounts_](#user-accounts) section above on how to do such.
-For the above example, you would need to add two aliases, like this:
+## 🚧 Roadmap
+Plans for the near future mainly include, besides usual improvements and bug fixes, a UI redesign as well as additional types of charts and statistics (see [#101](https://github.com/muety/wakapi/issues/101), [#80](https://github.com/muety/wakapi/issues/80), [#76](https://github.com/muety/wakapi/issues/76), [#12](https://github.com/muety/wakapi/issues/12)). If you have feature requests or any kind of improvement proposals feel free to open an issue or share them in our [user survey](https://github.com/muety/wakapi/issues/82). 
 
-* `INSERT INTO aliases (type, user_id, key, value) VALUES (0, 'your_username', 'myapp-web', 'myapp-frontend')` (analogously for `myapp-backend`)
+## ⌨️ How to use?
+There are different options for how to use Wakapi, ranging from our hosted cloud service to self-hosting it. Regardless of which option choose, you will always have to do the [client setup](#-client-setup) in addition. 
 
-#### Types
-* Project ~  type **0**
-* Language ~  type **1**
-* Editor ~ type **2**
-* OS ~  type **3**
+### ☁️ Option 1: Use [wakapi.dev](https://wakapi.dev)
+If you want to you out free, hosted cloud service, all you need to do is create an account and the set up your client-side tooling (see below).
 
-**NOTE:** In order for the aliases to take effect for non-live statistics, you would either have to wait 24 hours for the cache to be invalidated or restart Wakapi.
+However, we do not guarantee data persistence, so you might potentially lose your data if the service is taken down some day ❕
 
-## Best Practices
+### 🐳 Option 2: Use Docker
+```bash
+# Create a persistent volume
+$ docker volume create wakapi-data
+
+# Run the container
+$ docker run -d \
+  -p 3000:3000 \
+  -e "WAKAPI_PASSWORD_SALT=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w ${1:-32} | head -n 1)" \
+  -v wakapi-data:/data \
+  --name wakapi n1try/wakapi
+```
+
+**Note:** By default, SQLite is used as a database. To run Wakapi in Docker with MySQL or Postgres, see [Dockerfile](https://github.com/muety/wakapi/blob/master/Dockerfile) and [config.default.yml](https://github.com/muety/wakapi/blob/master/config.default.yml) for further options.
+
+If you want to run Wakapi on **Kubernetes**, there is [wakapi-helm-chart](https://github.com/andreymaznyak/wakapi-helm-chart) for quick and easy deployment.
+
+### 📦 Option 3: Run a release
+```bash
+# Download the release and unpack it
+$ wget https://github.com/muety/wakapi/releases/download/1.20.2/wakapi_linux_amd64.zip
+$ unzip wakapi_linux_amd64.zip
+
+# Optionally adapt config to your needs
+$ vi config.yml
+
+# Run it
+$ ./wakapi
+```
+
+### 🧑‍💻 Option 4: Run from source
+#### Prerequisites
+* Go >= 1.16 (with `$GOPATH` properly set)
+* gcc (to compile [go-sqlite3](https://github.com/mattn/go-sqlite3))
+    * Fedora / RHEL: `dnf install @development-tools`
+    * Ubuntu / Debian: `apt install build-essential`
+    * Windows: See [here](https://github.com/mattn/go-sqlite3/issues/214#issuecomment-253216476)
+
+#### Compile & Run
+```bash
+# Adapt config to your needs
+$ cp config.default.yml config.yml
+$ vi config.yml
+
+# Build the executable
+$ go build -o wakapi
+
+# Run it
+$ ./wakapi
+```
+
+**Note:** By default, the application is running in dev mode. However, it is recommended to set `ENV=production` for enhanced performance and security. To still be able to log in when using production mode, you either have to run Wakapi behind a reverse proxy, that enables for HTTPS encryption (see [best practices](#best-practices)) or set `security.insecure_cookies = true` in `config.yml`.
+
+### 💻 Client Setup
+Wakapi relies on the open-source [WakaTime](https://github.com/wakatime/wakatime) client tools. In order to collect statistics to Wakapi, you need to set them up.
+
+1. **Set up WakaTime** for your specific IDE or editor. Please refer to the respective [plugin guide](https://wakatime.com/plugins)
+2. **Editing your local `~/.wakatime.cfg`** file as follows
+
+```ini
+[settings]
+
+# Your Wakapi server URL or 'https://wakapi.dev/api/heartbeat' when using the cloud server
+api_url = http://localhost:3000/api/heartbeat
+
+# Your Wakapi API key (get it from the web interface after having created an account)
+api_key = 406fe41f-6d69-4183-a4cc-121e0c524c2b
+```
+
+Optionally, you can set up a [client-side proxy](https://github.com/muety/wakapi/wiki/Advanced-Setup:-Client-side-proxy) in addition.
+
+## 🔧 Configuration Options
+You can specify configuration options either via a config file (default: `config.yml`, customziable through the `-c` argument) or via environment variables. Here is an overview of all options.
+
+| YAML Key                  | Environment Variable      | Default      | Description                                                         |
+|---------------------------|---------------------------|--------------|---------------------------------------------------------------------|
+| `env`                       | `ENVIRONMENT`               | `dev`          | Whether to use development- or production settings                  |
+| `app.custom_languages`      | -                           | -              | Map from file endings to language names                             |
+| `server.port`               | `WAKAPI_PORT`               | `3000`         | Port to listen on                                                   |
+| `server.listen_ipv4`        | `WAKAPI_LISTEN_IPV4`        | `127.0.0.1`    | IPv4 network address to listen on (leave blank to disable IPv4)     |
+| `server.listen_ipv6`        | `WAKAPI_LISTEN_IPV6`        | `::1`          | IPv6 network address to listen on (leave blank to disable IPv6)     |
+| `server.tls_cert_path`      | `WAKAPI_TLS_CERT_PATH`      | -              | Path of SSL server certificate (leave blank to not use HTTPS)       |
+| `server.tls_key_path`       | `WAKAPI_TLS_KEY_PATH`       | -              | Path of SSL server private key (leave blank to not use HTTPS)       |
+| `server.base_path`          | `WAKAPI_BASE_PATH`          | `/`            | Web base path (change when running behind a proxy under a sub-path) |
+| `security.password_salt`    | `WAKAPI_PASSWORD_SALT`      | -              | Pepper to use for password hashing                                  |
+| `security.insecure_cookies` | `WAKAPI_INSECURE_COOKIES`   | `false`        | Whether or not to allow cookies over HTTP                           |
+| `security.cookie_max_age`   | `WAKAPI_COOKIE_MAX_AGE`     | `172800`       | Lifetime of authentication cookies in seconds or `0` to use [Session](https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies#Define_the_lifetime_of_a_cookie) cookies |
+| `security.allow_signup`     | `WAKAPI_ALLOW_SIGNUP`       | `true`         | Whether to enable user registration                                 |
+| `security.expose_metrics`   | `WAKAPI_EXPOSE_METRICS`     | `false`        | Whether to expose Prometheus metrics under `/api/metrics`               |
+| `db.host`                   | `WAKAPI_DB_HOST`            | -              | Database host                                                       |
+| `db.port`                   | `WAKAPI_DB_PORT`            | -              | Database port                                                       |
+| `db.user`                   | `WAKAPI_DB_USER`            | -              | Database user                                                       |
+| `db.password`               | `WAKAPI_DB_PASSWORD`        | -              | Database password                                                   |
+| `db.name`                   | `WAKAPI_DB_NAME`            | `wakapi_db.db` | Database name                                                       |
+| `db.dialect`                | `WAKAPI_DB_TYPE`            | `sqlite3`      | Database type (one of `sqlite3`, `mysql`, `postgres`, `cockroach`)  |
+| `db.charset`                | `WAKAPI_DB_CHARSET`         | `utf8mb4`      | Database connection charset (for MySQL only)                        |
+| `db.max_conn`               | `WAKAPI_DB_MAX_CONNECTIONS` | `2`            | Maximum number of database connections                              |
+| `db.ssl`                    | `WAKAPI_DB_SSL`             | `false`        | Whether to use TLS encryption for database connection (Postgres and CockroachDB only) |
+| `mail.enabled`              | `WAKAPI_MAIL_ENABLED`       | `true`         | Whether to allow Wakapi to send e-mail (e.g. for password resets) |
+| `mail.provider`             | `WAKAPI_MAIL_PROVIDER`      | `smtp`         | Implementation to use for sending mails (one of [`smtp`, `mailwhale`]) |
+| `mail.smtp.*`               | `WAKAPI_MAIL_SMTP_*`        | `-`            | Various options to configure SMTP. See [default config](config.default.yaml) for details |
+| `mail.mailwhale.*`          | `WAKAPI_MAIL_MAILWHALE_*`   | `-`            | Various options to configure [MailWhale](https://mailwhale.dev) sending service. See [default config](config.default.yaml) for details |
+| `sentry.dsn`                | `WAKAPI_SENTRY_DSN`         | –              | DSN for to integrate [Sentry](https://sentry.io) for error logging and tracing (leave empty to disable) |
+| `sentry.enable_tracing`     | `WAKAPI_SENTRY_TRACING`     | `false`        | Whether to enable Sentry request tracing                           |
+| `sentry.sample_rate`        | `WAKAPI_SENTRY_SAMPLE_RATE` | `0.75`         | Probability of tracing a request in Sentry                         |
+| `sentry.sample_rate_heartbats` | `WAKAPI_SENTRY_SAMPLE_RATE_HEARTBEATS` | `0.1` | Probability of tracing a heartbeats request in Sentry         |
+
+### Supported databases
+Wakapi uses [GORM](https://gorm.io) as an ORM. As a consequence, a set of different relational databases is supported.
+* [SQLite](https://sqlite.org/) (_default, easy setup_)
+* [MySQL](https://hub.docker.com/_/mysql) (_recommended, because most extensively tested_)
+* [MariaDB](https://hub.docker.com/_/mariadb) (_open-source MySQL alternative_)
+* [Postgres](https://hub.docker.com/_/postgres) (_open-source as well_)
+* [CockroachDB](https://www.cockroachlabs.com/docs/stable/install-cockroachdb-linux.html) (_cloud-native, distributed, Postgres-compatible API_)
+
+### Client-side proxy (`optional`)
+See the [advanced setup instructions](docs/advanced_setup.md).
+
+## 🔧 API Endpoints
+See our [Swagger API Documentation](https://wakapi.dev/swagger-ui).
+
+### Generating Swagger docs
+```bash
+$ go get -u github.com/swaggo/swag/cmd/swag
+$ swag init -o static/docs
+```
+
+## 🤝 Integrations
+### Prometheus Export
+You can export your Wakapi statistics to Prometheus to view them in a Grafana dashboard or so. Here is how.
+
+```bash
+# 1. Start Wakapi with the feature enabled
+$ export WAKAPI_EXPOSE_METRICS=true
+$ ./wakapi
+
+# 2. Get your API key and hash it
+$ echo "<YOUR_API_KEY>" | base64
+
+# 3. Add a Prometheus scrape config to your prometheus.yml (see below)
+```
+
+#### Scrape config example
+```yml
+# prometheus.yml
+# (assuming your Wakapi instance listens at localhost, port 3000)
+
+scrape_configs:
+  - job_name: 'wakapi'
+    scrape_interval: 1m
+    metrics_path: '/api/metrics'
+    bearer_token: '<YOUR_BASE64_HASHED_TOKEN>'
+    static_configs:
+      - targets: ['localhost:3000']
+```
+
+#### Grafana 
+There is also a [nice Grafana dashboard](https://grafana.com/grafana/dashboards/12790), provided by the author of [wakatime_exporter](https://github.com/MacroPower/wakatime_exporter).
+
+![](https://grafana.com/api/dashboards/12790/images/8741/image)
+
+### WakaTime Integration
+Wakapi plays well together with [WakaTime](https://wakatime.com). For one thing, you can **forward heartbeats** from Wakapi to WakaTime to effectively use both services simultaneously. In addition, there is the option to **import historic data** from WakaTime for consistency between both services. Both features can be enabled in the _Integrations_ section of your Wakapi instance's settings page.     
+
+### GitHub Readme Stats Integrations
+Wakapi also integrates with [GitHub Readme Stats](https://github.com/anuraghazra/github-readme-stats#wakatime-week-stats) to generate fancy cards for you. Here is an example.
+
+![](https://github-readme-stats.vercel.app/api/wakatime?username=n1try&api_domain=wakapi.dev&bg_color=2D3748&title_color=2F855A&icon_color=2F855A&text_color=ffffff&custom_title=Wakapi%20Week%20Stats&layout=compact)
+
+## 👍 Best Practices
 It is recommended to use wakapi behind a **reverse proxy**, like [Caddy](https://caddyserver.com) or _nginx_ to enable **TLS encryption** (HTTPS).
-However, if you want to expose your wakapi instance to the public anyway, you need to set `listen = 0.0.0.0` in `config.ini`
+However, if you want to expose your wakapi instance to the public anyway, you need to set `server.listen_ipv4` to `0.0.0.0` in `config.yml`
 
-## Todo
-* User sign up and log in
-* Additional endpoints for retrieving statistics data
-* Support for SQLite database
-* Unit tests
+## 🤓 Developer Notes
+### Running tests
+```bash
+CGO_FLAGS="-g -O2 -Wno-return-local-addr" go test -json -coverprofile=coverage/coverage.out ./... -run ./...
+```
 
-## Important Note
-**This is not an alternative to using WakaTime.** It is just a custom, non-commercial, self-hosted application to collect coding statistics using the already existing editor plugins provided by the WakaTime community. It was created for personal use only and with the purpose of keeping the sovereignity of your own data. However, if you like the official product, **please support the authors and buy an official WakaTime subscription!**
+### Building Tailwind
+To keep things minimal, Wakapi does not contain a `package.json`, `node_modules` or any sort of frontend build step. Instead, all JS and CSS assets are included as static files and checked in to Git. This way we can avoid requiring NodeJS to build Wakapi. However, for [TailwindCSS](https://tailwindcss.com/docs/installation#building-for-production) it makes sense to run it through a "build" step to benefit from purging and significantly reduce it in size. To only require this at the time of development, the compiled asset is checked in to Git as well. 
 
-## License
+```bash
+$ tailwindcss-cli build static/assets/vendor/tailwind.css -o static/assets/vendor/tailwind.dist.css
+```
+
+## 🙏 Support
+If you like this project, please consider supporting it 🙂. You can donate either through [buying me a coffee](https://buymeacoff.ee/n1try) or becoming a GitHub sponsor. Every little donation is highly appreciated and boosts the developers' motivation to keep improving Wakapi!
+
+## ❔ FAQs
+Since Wakapi heavily relies on the concepts provided by WakaTime, [their FAQs](https://wakatime.com/faq) apply to Wakapi for large parts as well. You might find answers there.
+
+<details>
+<summary><b>What data is sent to Wakapi?</b></summary>
+
+<ul>
+  <li>File names</li>
+  <li>Project names</li>
+  <li>Editor names</li>
+  <li>You computer's host name</li>
+  <li>Timestamps for every action you take in your editor</li>
+  <li>...</li>
+</ul>
+
+See the related [WakaTime FAQ section](https://wakatime.com/faq#data-collected) for details.
+
+If you host Wakapi yourself, you have control over all your data. However, if you use our webservice and are concerned about privacy, you can also [exclude or obfuscate](https://wakatime.com/faq#exclude-paths) certain file- or project names.  
+</details>
+
+<details>
+<summary><b>What happens if I'm offline?</b></summary>
+
+All data is cached locally on your machine and sent in batches once you're online again.
+</details>
+
+<details>
+<summary><b>How did Wakapi come about?</b></summary>
+
+Wakapi was started when I was a student, who wanted to track detailed statistics about my coding time. Although I'm a big fan of WakaTime I didn't want to pay <a href="https://wakatime.com/pricing)">9 $ a month</a> back then. Luckily, most parts of WakaTime are open source!  
+</details>
+
+<details>
+<summary><b>How does Wakapi compare to WakaTime?</b></summary>
+
+Wakapi is a small subset of WakaTime and has a lot less features. Cool WakaTime features, that are missing Wakapi, include:
+
+<ul>
+  <li>Leaderboards</li>
+  <li><a href="https://wakatime.com/share/embed">Embeddable Charts</a></li>
+  <li>Personal Goals</li>
+  <li>Team- / Organization Support</li>
+  <li>Integrations (with GitLab, etc.)</li>
+  <li>Richer API</li>
+</ul>
+
+WakaTime is worth the price. However, if you only want basic statistics and keep sovereignty over your data, you might want to go with Wakapi.
+</details>
+
+<details>
+<summary><b>How are durations calculated?</b></summary>
+
+Inferring a measure for your coding time from heartbeats works a bit different than in WakaTime. While WakaTime has <a href="https://wakatime.com/faq#timeout">timeout intervals</a>, Wakapi essentially just pads every heartbeat, that occurs after a longer pause, with 2 extra minutes.
+
+Here is an example (circles are heartbeats):
+
+```
+|---o---o--------------o---o---|
+|   |10s|      3m      |10s|   |
+
+```
+
+It is unclear how to handle the three minutes in between. Did the developer do a 3-minute break or were just no heartbeats being sent, e.g. because the developer was starring at the screen find a solution, but not actually typing code.
+
+<ul>
+  <li><b>WakaTime</b> (with 5 min timeout): 3 min 20 sec
+  <li><b>WakaTime</b> (with 2 min timeout): 20 sec
+  <li><b>Wakapi:</b> 10 sec + 2 min + 10 sec = 2 min 20 sec</li>
+</ul>
+
+Wakapi adds a "padding" of two minutes before the third heartbeat. This is why total times will slightly vary between Wakapi and WakaTime.
+</details>
+
+## 🙏 Thanks
+I highly appreciate the efforts of [@alanhamlett](https://github.com/alanhamlett) and the WakaTime team and am thankful for their software being open source. 
+
+## 📓 License
 GPL-v3 @ [Ferdinand Mütsch](https://muetsch.io)

config.default.yml

@@ -0,0 +1,57 @@
+env: development
+
+server:
+  listen_ipv4: 127.0.0.1            # leave blank to disable ipv4
+  listen_ipv6: ::1                  # leave blank to disable ipv6
+  tls_cert_path:                    # leave blank to not use https
+  tls_key_path:                     # leave blank to not use https
+  port: 3000
+  base_path: /
+  public_url: http://localhost:3000 # required for links (e.g. password reset) in e-mail
+
+app:
+  aggregation_time: '02:15' # time at which to run daily aggregation batch jobs
+  inactive_days: 7          # time of previous days within a user must have logged in to be considered active
+  custom_languages:
+    vue: Vue
+    jsx: JSX
+    svelte: Svelte
+
+db:
+  host:                     # leave blank when using sqlite3
+  port:                     # leave blank when using sqlite3
+  user:                     # leave blank when using sqlite3
+  password:                 # leave blank when using sqlite3
+  name: wakapi_db.db        # database name for mysql / postgres or file path for sqlite (e.g. /tmp/wakapi.db)
+  dialect: sqlite3          # mysql, postgres, sqlite3
+  charset: utf8mb4          # only used for mysql connections
+  max_conn: 2               # maximum number of concurrent connections to maintain
+  ssl: false                # whether to use tls for db connection (must be true for cockroachdb) (ignored for mysql and sqlite)
+
+security:
+  password_salt:            # CHANGE !
+  insecure_cookies: false   # You need to set this to 'true' when on localhost
+  cookie_max_age: 172800
+  allow_signup: true
+  expose_metrics: false
+
+sentry:
+  dsn:                        # leave blank to disable sentry integration
+  enable_tracing: true        # whether to use performance monitoring
+  sample_rate: 0.75           # probability of tracing a request
+  sample_rate_heartbeats: 0.1 # probability of tracing a heartbeat request
+
+mail:
+  enabled: true                         # whether to enable mails (used for password resets, reports, etc.)
+  provider: smtp                        # method for sending mails, currently one of ['smtp', 'mailwhale']
+  smtp:                                 # smtp settings when sending mails via smtp
+    host:
+    port:
+    username:
+    password:
+    tls:
+    sender: Wakapi <noreply@wakapi.dev>
+  mailwhale:                            # mailwhale.dev settings when using mailwhale as sending service
+    url:
+    client_id:
+    client_secret:

config.ini

@@ -1,12 +0,0 @@
-[server]
-listen = 127.0.0.1
-port = 3000
-
-[app]
-cleanup = true
-
-[database]
-max_connections = 2
-
-[languages]
-vue = Vue

config/config.go

@@ -0,0 +1,361 @@
+package config
+
+import (
+	"encoding/json"
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/securecookie"
+	"github.com/jinzhu/configor"
+	"github.com/muety/wakapi/data"
+	"github.com/muety/wakapi/models"
+	"gorm.io/driver/mysql"
+	"gorm.io/driver/postgres"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+const (
+	defaultConfigPath = "config.yml"
+
+	SQLDialectMysql    = "mysql"
+	SQLDialectPostgres = "postgres"
+	SQLDialectSqlite   = "sqlite3"
+
+	KeyLatestTotalTime  = "latest_total_time"
+	KeyLatestTotalUsers = "latest_total_users"
+	KeyLastImportImport = "last_import"
+
+	SimpleDateFormat     = "2006-01-02"
+	SimpleDateTimeFormat = "2006-01-02 15:04:05"
+
+	ErrUnauthorized        = "401 unauthorized"
+	ErrInternalServerError = "500 internal server error"
+)
+
+const (
+	WakatimeApiUrl               = "https://wakatime.com/api/v1"
+	WakatimeApiUserUrl           = "/users/current"
+	WakatimeApiAllTimeUrl        = "/users/current/all_time_since_today"
+	WakatimeApiHeartbeatsUrl     = "/users/current/heartbeats"
+	WakatimeApiHeartbeatsBulkUrl = "/users/current/heartbeats.bulk"
+	WakatimeApiUserAgentsUrl     = "/users/current/user_agents"
+	WakatimeApiMachineNamesUrl   = "/users/current/machine_names"
+)
+
+const (
+	MailProviderSmtp      = "smtp"
+	MailProviderMailWhale = "mailwhale"
+)
+
+var emailProviders = []string{
+	MailProviderSmtp,
+	MailProviderMailWhale,
+}
+
+var cfg *Config
+var cFlag = flag.String("config", defaultConfigPath, "config file location")
+
+type appConfig struct {
+	AggregationTime  string                       `yaml:"aggregation_time" default:"02:15" env:"WAKAPI_AGGREGATION_TIME"`
+	ImportBackoffMin int                          `yaml:"import_backoff_min" default:"5" env:"WAKAPI_IMPORT_BACKOFF_MIN"`
+	ImportBatchSize  int                          `yaml:"import_batch_size" default:"100" env:"WAKAPI_IMPORT_BATCH_SIZE"`
+	InactiveDays     int                          `yaml:"inactive_days" default:"7" env:"WAKAPI_INACTIVE_DAYS"`
+	CustomLanguages  map[string]string            `yaml:"custom_languages"`
+	Colors           map[string]map[string]string `yaml:"-"`
+}
+
+type securityConfig struct {
+	AllowSignup   bool `yaml:"allow_signup" default:"true" env:"WAKAPI_ALLOW_SIGNUP"`
+	ExposeMetrics bool `yaml:"expose_metrics" default:"false" env:"WAKAPI_EXPOSE_METRICS"`
+	// this is actually a pepper (https://en.wikipedia.org/wiki/Pepper_(cryptography))
+	PasswordSalt    string                     `yaml:"password_salt" default:"" env:"WAKAPI_PASSWORD_SALT"`
+	InsecureCookies bool                       `yaml:"insecure_cookies" default:"false" env:"WAKAPI_INSECURE_COOKIES"`
+	CookieMaxAgeSec int                        `yaml:"cookie_max_age" default:"172800" env:"WAKAPI_COOKIE_MAX_AGE"`
+	SecureCookie    *securecookie.SecureCookie `yaml:"-"`
+}
+
+type dbConfig struct {
+	Host     string `env:"WAKAPI_DB_HOST"`
+	Port     uint   `env:"WAKAPI_DB_PORT"`
+	User     string `env:"WAKAPI_DB_USER"`
+	Password string `env:"WAKAPI_DB_PASSWORD"`
+	Name     string `default:"wakapi_db.db" env:"WAKAPI_DB_NAME"`
+	Dialect  string `yaml:"-"`
+	Charset  string `default:"utf8mb4" env:"WAKAPI_DB_CHARSET"`
+	Type     string `yaml:"dialect" default:"sqlite3" env:"WAKAPI_DB_TYPE"`
+	MaxConn  uint   `yaml:"max_conn" default:"2" env:"WAKAPI_DB_MAX_CONNECTIONS"`
+	Ssl      bool   `default:"false" env:"WAKAPI_DB_SSL"`
+}
+
+type serverConfig struct {
+	Port        int    `default:"3000" env:"WAKAPI_PORT"`
+	ListenIpV4  string `yaml:"listen_ipv4" default:"127.0.0.1" env:"WAKAPI_LISTEN_IPV4"`
+	ListenIpV6  string `yaml:"listen_ipv6" default:"::1" env:"WAKAPI_LISTEN_IPV6"`
+	BasePath    string `yaml:"base_path" default:"/" env:"WAKAPI_BASE_PATH"`
+	PublicUrl   string `yaml:"public_url" default:"http://localhost:3000" env:"WAKAPI_PUBLIC_URL"`
+	TlsCertPath string `yaml:"tls_cert_path" default:"" env:"WAKAPI_TLS_CERT_PATH"`
+	TlsKeyPath  string `yaml:"tls_key_path" default:"" env:"WAKAPI_TLS_KEY_PATH"`
+}
+
+type sentryConfig struct {
+	Dsn                  string  `env:"WAKAPI_SENTRY_DSN"`
+	EnableTracing        bool    `yaml:"enable_tracing" env:"WAKAPI_SENTRY_TRACING"`
+	SampleRate           float32 `yaml:"sample_rate" default:"0.75" env:"WAKAPI_SENTRY_SAMPLE_RATE"`
+	SampleRateHeartbeats float32 `yaml:"sample_rate_heartbeats" default:"0.1" env:"WAKAPI_SENTRY_SAMPLE_RATE_HEARTBEATS"`
+}
+
+type mailConfig struct {
+	Enabled   bool                `env:"WAKAPI_MAIL_ENABLED" default:"true"`
+	Provider  string              `env:"WAKAPI_MAIL_PROVIDER" default:"smtp"`
+	MailWhale MailwhaleMailConfig `yaml:"mailwhale"`
+	Smtp      SMTPMailConfig      `yaml:"smtp"`
+}
+
+type MailwhaleMailConfig struct {
+	Url          string `env:"WAKAPI_MAIL_MAILWHALE_URL"`
+	ClientId     string `yaml:"client_id" env:"WAKAPI_MAIL_MAILWHALE_CLIENT_ID"`
+	ClientSecret string `yaml:"client_secret" env:"WAKAPI_MAIL_MAILWHALE_CLIENT_SECRET"`
+}
+
+type SMTPMailConfig struct {
+	Host     string `env:"WAKAPI_MAIL_SMTP_HOST"`
+	Port     uint   `env:"WAKAPI_MAIL_SMTP_PORT"`
+	Username string `env:"WAKAPI_MAIL_SMTP_USER"`
+	Password string `env:"WAKAPI_MAIL_SMTP_PASS"`
+	TLS      bool   `env:"WAKAPI_MAIL_SMTP_TLS"`
+	Sender   string `env:"WAKAPI_MAIL_SMTP_SENDER"`
+}
+
+type Config struct {
+	Env      string `default:"dev" env:"ENVIRONMENT"`
+	Version  string `yaml:"-"`
+	App      appConfig
+	Security securityConfig
+	Db       dbConfig
+	Server   serverConfig
+	Sentry   sentryConfig
+	Mail     mailConfig
+}
+
+func (c *Config) CreateCookie(name, value, path string) *http.Cookie {
+	return c.createCookie(name, value, path, c.Security.CookieMaxAgeSec)
+}
+
+func (c *Config) GetClearCookie(name, path string) *http.Cookie {
+	return c.createCookie(name, "", path, -1)
+}
+
+func (c *Config) createCookie(name, value, path string, maxAge int) *http.Cookie {
+	return &http.Cookie{
+		Name:     name,
+		Value:    value,
+		Path:     path,
+		MaxAge:   maxAge,
+		Secure:   !c.Security.InsecureCookies,
+		HttpOnly: true,
+		SameSite: http.SameSiteStrictMode,
+	}
+}
+
+func (c *Config) IsDev() bool {
+	return IsDev(c.Env)
+}
+
+func (c *Config) UseTLS() bool {
+	return c.Server.TlsCertPath != "" && c.Server.TlsKeyPath != ""
+}
+
+func (c *Config) GetMigrationFunc(dbDialect string) models.MigrationFunc {
+	switch dbDialect {
+	default:
+		return func(db *gorm.DB) error {
+			db.AutoMigrate(&models.User{})
+			db.AutoMigrate(&models.KeyStringValue{})
+			db.AutoMigrate(&models.Alias{})
+			db.AutoMigrate(&models.Heartbeat{})
+			db.AutoMigrate(&models.Summary{})
+			db.AutoMigrate(&models.SummaryItem{})
+			db.AutoMigrate(&models.LanguageMapping{})
+			return nil
+		}
+	}
+}
+
+func (c *dbConfig) GetDialector() gorm.Dialector {
+	switch c.Dialect {
+	case SQLDialectMysql:
+		return mysql.New(mysql.Config{
+			DriverName: c.Dialect,
+			DSN:        mysqlConnectionString(c),
+		})
+	case SQLDialectPostgres:
+		return postgres.New(postgres.Config{
+			DSN: postgresConnectionString(c),
+		})
+	case SQLDialectSqlite:
+		return sqlite.Open(sqliteConnectionString(c))
+	}
+	return nil
+}
+
+func mysqlConnectionString(config *dbConfig) string {
+	//location, _ := time.LoadLocation("Local")
+	return fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=%s&parseTime=true&loc=%s&sql_mode=ANSI_QUOTES",
+		config.User,
+		config.Password,
+		config.Host,
+		config.Port,
+		config.Name,
+		config.Charset,
+		"Local",
+	)
+}
+
+func postgresConnectionString(config *dbConfig) string {
+	sslmode := "disable"
+	if config.Ssl {
+		sslmode = "require"
+	}
+
+	return fmt.Sprintf("host=%s port=%d user=%s dbname=%s password=%s sslmode=%s",
+		config.Host,
+		config.Port,
+		config.User,
+		config.Name,
+		config.Password,
+		sslmode,
+	)
+}
+
+func sqliteConnectionString(config *dbConfig) string {
+	return config.Name
+}
+
+func (c *appConfig) GetCustomLanguages() map[string]string {
+	return cloneStringMap(c.CustomLanguages, false)
+}
+
+func (c *appConfig) GetLanguageColors() map[string]string {
+	return cloneStringMap(c.Colors["languages"], true)
+}
+
+func (c *appConfig) GetEditorColors() map[string]string {
+	return cloneStringMap(c.Colors["editors"], true)
+}
+
+func (c *appConfig) GetOSColors() map[string]string {
+	return cloneStringMap(c.Colors["operating_systems"], true)
+}
+
+func (c *serverConfig) GetPublicUrl() string {
+	return strings.TrimSuffix(c.PublicUrl, "/")
+}
+
+func (c *SMTPMailConfig) ConnStr() string {
+	return fmt.Sprintf("%s:%d", c.Host, c.Port)
+}
+
+func IsDev(env string) bool {
+	return env == "dev" || env == "development"
+}
+
+func readColors() map[string]map[string]string {
+	// Read language colors
+	// Source:
+	// – https://raw.githubusercontent.com/ozh/github-colors/master/colors.json
+	// – https://wakatime.com/colors/operating_systems
+	// - https://wakatime.com/colors/editors
+	// Extracted from Wakatime website with XPath (see below) and did a bit of regex magic after.
+	// – $x('//span[@class="editor-icon tip"]/@data-original-title').map(e => e.nodeValue)
+	// – $x('//span[@class="editor-icon tip"]/div[1]/text()').map(e => e.nodeValue)
+	var colors = make(map[string]map[string]string)
+	if err := json.Unmarshal(data.ColorsFile, &colors); err != nil {
+		logbuch.Fatal(err.Error())
+	}
+
+	return colors
+}
+
+func mustReadConfigLocation() string {
+	if _, err := os.Stat(*cFlag); err != nil {
+		logbuch.Fatal("failed to find config file at '%s'", *cFlag)
+	}
+	return *cFlag
+}
+
+func resolveDbDialect(dbType string) string {
+	if dbType == "cockroach" {
+		return "postgres"
+	}
+	return dbType
+}
+
+func findString(needle string, haystack []string, defaultVal string) string {
+	for _, s := range haystack {
+		if s == needle {
+			return s
+		}
+	}
+	return defaultVal
+}
+
+func Set(config *Config) {
+	cfg = config
+}
+
+func Get() *Config {
+	return cfg
+}
+
+func Load(version string) *Config {
+	config := &Config{}
+
+	flag.Parse()
+
+	if err := configor.New(&configor.Config{}).Load(config, mustReadConfigLocation()); err != nil {
+		logbuch.Fatal("failed to read config: %v", err)
+	}
+
+	config.Version = strings.TrimSpace(version)
+	config.App.Colors = readColors()
+	config.Db.Dialect = resolveDbDialect(config.Db.Type)
+	config.Security.SecureCookie = securecookie.New(
+		securecookie.GenerateRandomKey(64),
+		securecookie.GenerateRandomKey(32),
+	)
+
+	if strings.HasSuffix(config.Server.BasePath, "/") {
+		config.Server.BasePath = config.Server.BasePath[:len(config.Server.BasePath)-1]
+	}
+
+	for k, v := range config.App.CustomLanguages {
+		if v == "" {
+			config.App.CustomLanguages[k] = "unknown"
+		}
+	}
+
+	if config.Server.ListenIpV4 == "" && config.Server.ListenIpV6 == "" {
+		logbuch.Fatal("either of listen_ipv4 or listen_ipv6 must be set")
+	}
+
+	if config.Db.MaxConn <= 0 {
+		logbuch.Fatal("you must allow at least one database connection")
+	}
+
+	if config.Sentry.Dsn != "" {
+		logbuch.Info("enabling sentry integration")
+		initSentry(config.Sentry, config.IsDev())
+	}
+
+	if config.Mail.Provider != "" && findString(config.Mail.Provider, emailProviders, "") == "" {
+		logbuch.Fatal("unknown mail provider '%s'", config.Mail.Provider)
+	}
+
+	Set(config)
+	return Get()
+}

config/config_test.go

@@ -0,0 +1,67 @@
+package config
+
+import (
+	"fmt"
+	"github.com/stretchr/testify/assert"
+	"testing"
+)
+
+func TestConfig_IsDev(t *testing.T) {
+	assert.True(t, IsDev("dev"))
+	assert.True(t, IsDev("development"))
+	assert.False(t, IsDev("prod"))
+	assert.False(t, IsDev("production"))
+	assert.False(t, IsDev("anything else"))
+}
+
+func Test_mysqlConnectionString(t *testing.T) {
+	c := &dbConfig{
+		Host:     "test_host",
+		Port:     9999,
+		User:     "test_user",
+		Password: "test_password",
+		Name:     "test_name",
+		Dialect:  "mysql",
+		Charset:  "utf8mb4",
+		MaxConn:  10,
+	}
+
+	assert.Equal(t, fmt.Sprintf(
+		"%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=true&loc=%s&sql_mode=ANSI_QUOTES",
+		c.User,
+		c.Password,
+		c.Host,
+		c.Port,
+		c.Name,
+		"Local",
+	), mysqlConnectionString(c))
+}
+
+func Test_postgresConnectionString(t *testing.T) {
+	c := &dbConfig{
+		Host:     "test_host",
+		Port:     9999,
+		User:     "test_user",
+		Password: "test_password",
+		Name:     "test_name",
+		Dialect:  "postgres",
+		MaxConn:  10,
+	}
+
+	assert.Equal(t, fmt.Sprintf(
+		"host=%s port=%d user=%s dbname=%s password=%s sslmode=disable",
+		c.Host,
+		c.Port,
+		c.User,
+		c.Name,
+		c.Password,
+	), postgresConnectionString(c))
+}
+
+func Test_sqliteConnectionString(t *testing.T) {
+	c := &dbConfig{
+		Name:    "test_name",
+		Dialect: "sqlite3",
+	}
+	assert.Equal(t, c.Name, sqliteConnectionString(c))
+}

config/sentry.go

@@ -0,0 +1,61 @@
+package config
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/getsentry/sentry-go"
+	"github.com/muety/wakapi/models"
+	"net/http"
+	"os"
+	"strings"
+)
+
+type SentryErrorWriter struct{}
+
+// TODO: extend sentry error logging to include context and stacktrace
+// see https://github.com/muety/wakapi/issues/169
+func (s *SentryErrorWriter) Write(p []byte) (n int, err error) {
+	sentry.CaptureMessage(string(p))
+	return os.Stderr.Write(p)
+}
+
+func init() {
+	logbuch.SetOutput(os.Stdout, &SentryErrorWriter{})
+}
+
+func initSentry(config sentryConfig, debug bool) {
+	if err := sentry.Init(sentry.ClientOptions{
+		Dsn:   config.Dsn,
+		Debug: debug,
+		TracesSampler: sentry.TracesSamplerFunc(func(ctx sentry.SamplingContext) sentry.Sampled {
+			if !config.EnableTracing {
+				return sentry.SampledFalse
+			}
+
+			hub := sentry.GetHubFromContext(ctx.Span.Context())
+			txName := hub.Scope().Transaction()
+
+			if strings.HasPrefix(txName, "GET /assets") || strings.HasPrefix(txName, "GET /api/health") {
+				return sentry.SampledFalse
+			}
+			if txName == "POST /api/heartbeat" {
+				return sentry.UniformTracesSampler(config.SampleRateHeartbeats).Sample(ctx)
+			}
+			return sentry.UniformTracesSampler(config.SampleRate).Sample(ctx)
+		}),
+		BeforeSend: func(event *sentry.Event, hint *sentry.EventHint) *sentry.Event {
+			type principalGetter interface {
+				GetPrincipal() *models.User
+			}
+			if hint.Context != nil {
+				if req, ok := hint.Context.Value(sentry.RequestContextKey).(*http.Request); ok {
+					if p := req.Context().Value("principal"); p != nil {
+						event.User.ID = p.(principalGetter).GetPrincipal().ID
+					}
+				}
+			}
+			return event
+		},
+	}); err != nil {
+		logbuch.Fatal("failed to initialized sentry – %v", err)
+	}
+}

config/templates.go

@@ -0,0 +1,12 @@
+package config
+
+const (
+	IndexTemplate         = "index.tpl.html"
+	LoginTemplate         = "login.tpl.html"
+	ImprintTemplate       = "imprint.tpl.html"
+	SignupTemplate        = "signup.tpl.html"
+	SetPasswordTemplate   = "set-password.tpl.html"
+	ResetPasswordTemplate = "reset-password.tpl.html"
+	SettingsTemplate      = "settings.tpl.html"
+	SummaryTemplate       = "summary.tpl.html"
+)

config/utils.go

@@ -0,0 +1,14 @@
+package config
+
+import "strings"
+
+func cloneStringMap(m map[string]string, keysToLower bool) map[string]string {
+	m2 := make(map[string]string)
+	for k, v := range m {
+		if keysToLower {
+			k = strings.ToLower(k)
+		}
+		m2[k] = v
+	}
+	return m2
+}

coverage/coverage.out

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data/colors.json

@@ -0,0 +1,325 @@
+{
+  "languages": {
+    "1C Enterprise": "#814CCC",
+    "ABAP": "#E8274B",
+    "ActionScript": "#882B0F",
+    "Ada": "#02f88c",
+    "Agda": "#315665",
+    "AGS Script": "#B9D9FF",
+    "Alloy": "#64C800",
+    "AMPL": "#E6EFBB",
+    "AngelScript": "#C7D7DC",
+    "ANTLR": "#9DC3FF",
+    "API Blueprint": "#2ACCA8",
+    "APL": "#5A8164",
+    "AppleScript": "#101F1F",
+    "Arc": "#aa2afe",
+    "ASP": "#6a40fd",
+    "AspectJ": "#a957b0",
+    "Assembly": "#6E4C13",
+    "Asymptote": "#4a0c0c",
+    "ATS": "#1ac620",
+    "AutoHotkey": "#6594b9",
+    "AutoIt": "#1C3552",
+    "Ballerina": "#FF5000",
+    "Batchfile": "#C1F12E",
+    "BlitzMax": "#cd6400",
+    "Boo": "#d4bec1",
+    "Brainfuck": "#2F2530",
+    "C": "#555555",
+    "C#": "#178600",
+    "C++": "#f34b7d",
+    "Ceylon": "#dfa535",
+    "Chapel": "#8dc63f",
+    "Cirru": "#ccccff",
+    "Clarion": "#db901e",
+    "Clean": "#3F85AF",
+    "Click": "#E4E6F3",
+    "Clojure": "#db5855",
+    "CoffeeScript": "#244776",
+    "ColdFusion": "#ed2cd6",
+    "Common Lisp": "#3fb68b",
+    "Common Workflow Language": "#B5314C",
+    "Component Pascal": "#B0CE4E",
+    "Crystal": "#000100",
+    "CSS": "#563d7c",
+    "Cuda": "#3A4E3A",
+    "D": "#ba595e",
+    "Dart": "#00B4AB",
+    "DataWeave": "#003a52",
+    "DM": "#447265",
+    "Dockerfile": "#384d54",
+    "Docker": "#384d54",
+    "Dogescript": "#cca760",
+    "Dylan": "#6c616e",
+    "E": "#ccce35",
+    "eC": "#913960",
+    "ECL": "#8a1267",
+    "Eiffel": "#946d57",
+    "Elixir": "#6e4a7e",
+    "Elm": "#60B5CC",
+    "Emacs Lisp": "#c065db",
+    "EmberScript": "#FFF4F3",
+    "EQ": "#a78649",
+    "Erlang": "#B83998",
+    "F#": "#b845fc",
+    "F*": "#572e30",
+    "Factor": "#636746",
+    "Fancy": "#7b9db4",
+    "Fantom": "#14253c",
+    "FLUX": "#88ccff",
+    "Forth": "#341708",
+    "Fortran": "#4d41b1",
+    "FreeMarker": "#0050b2",
+    "Frege": "#00cafe",
+    "Game Maker Language": "#71b417",
+    "GDScript": "#355570",
+    "Genie": "#fb855d",
+    "Gherkin": "#5B2063",
+    "Glyph": "#c1ac7f",
+    "Gnuplot": "#f0a9f0",
+    "Go": "#00ADD8",
+    "Golo": "#88562A",
+    "Gosu": "#82937f",
+    "Grammatical Framework": "#79aa7a",
+    "Groovy": "#e69f56",
+    "Hack": "#878787",
+    "Harbour": "#0e60e3",
+    "Haskell": "#5e5086",
+    "Haxe": "#df7900",
+    "HiveQL": "#dce200",
+    "HTML": "#e34c26",
+    "Hy": "#7790B2",
+    "IDL": "#a3522f",
+    "Idris": "#b30000",
+    "Io": "#a9188d",
+    "Ioke": "#078193",
+    "Isabelle": "#FEFE00",
+    "J": "#9EEDFF",
+    "Java": "#b07219",
+    "JavaScript": "#f1e05a",
+    "Jolie": "#843179",
+    "JSONiq": "#40d47e",
+    "Jsonnet": "#0064bd",
+    "Julia": "#a270ba",
+    "Jupyter Notebook": "#DA5B0B",
+    "Kotlin": "#F18E33",
+    "KRL": "#28430A",
+    "Lasso": "#999999",
+    "Lex": "#DBCA00",
+    "LFE": "#4C3023",
+    "LiveScript": "#499886",
+    "LLVM": "#185619",
+    "LOLCODE": "#cc9900",
+    "LookML": "#652B81",
+    "LSL": "#3d9970",
+    "Lua": "#000080",
+    "Makefile": "#427819",
+    "Mask": "#f97732",
+    "MATLAB": "#e16737",
+    "Max": "#c4a79c",
+    "MAXScript": "#00a6a6",
+    "mcfunction": "#E22837",
+    "Mercury": "#ff2b2b",
+    "Meson": "#007800",
+    "Metal": "#8f14e9",
+    "Mirah": "#c7a938",
+    "Modula-3": "#223388",
+    "MQL4": "#62A8D6",
+    "MQL5": "#4A76B8",
+    "MTML": "#b7e1f4",
+    "NCL": "#28431f",
+    "Nearley": "#990000",
+    "Nemerle": "#3d3c6e",
+    "nesC": "#94B0C7",
+    "NetLinx": "#0aa0ff",
+    "NetLinx+ERB": "#747faa",
+    "NetLogo": "#ff6375",
+    "NewLisp": "#87AED7",
+    "Nextflow": "#3ac486",
+    "Nim": "#37775b",
+    "Nit": "#009917",
+    "Nix": "#7e7eff",
+    "Nu": "#c9df40",
+    "Objective-C": "#438eff",
+    "Objective-C++": "#6866fb",
+    "Objective-J": "#ff0c5a",
+    "OCaml": "#3be133",
+    "Omgrofl": "#cabbff",
+    "ooc": "#b0b77e",
+    "Opal": "#f7ede0",
+    "Oxygene": "#cdd0e3",
+    "Oz": "#fab738",
+    "P4": "#7055b5",
+    "Pan": "#cc0000",
+    "Papyrus": "#6600cc",
+    "Parrot": "#f3ca0a",
+    "Pascal": "#E3F171",
+    "Pawn": "#dbb284",
+    "Pep8": "#C76F5B",
+    "Perl": "#0298c3",
+    "Perl 6": "#0000fb",
+    "PHP": "#4F5D95",
+    "PigLatin": "#fcd7de",
+    "Pike": "#005390",
+    "PLSQL": "#dad8d8",
+    "PogoScript": "#d80074",
+    "PostScript": "#da291c",
+    "PowerBuilder": "#8f0f8d",
+    "PowerShell": "#012456",
+    "Processing": "#0096D8",
+    "Prolog": "#74283c",
+    "Propeller Spin": "#7fa2a7",
+    "Puppet": "#302B6D",
+    "PureBasic": "#5a6986",
+    "PureScript": "#1D222D",
+    "Python": "#3572A5",
+    "q": "#0040cd",
+    "QML": "#44a51c",
+    "Quake": "#882233",
+    "R": "#198CE7",
+    "Racket": "#3c5caa",
+    "Ragel": "#9d5200",
+    "RAML": "#77d9fb",
+    "Rascal": "#fffaa0",
+    "Rebol": "#358a5b",
+    "Red": "#f50000",
+    "Ren'Py": "#ff7f7f",
+    "Ring": "#2D54CB",
+    "Roff": "#ecdebe",
+    "Rouge": "#cc0088",
+    "Ruby": "#701516",
+    "RUNOFF": "#665a4e",
+    "Rust": "#dea584",
+    "SaltStack": "#646464",
+    "SAS": "#B34936",
+    "Scala": "#c22d40",
+    "Scheme": "#1e4aec",
+    "sed": "#64b970",
+    "Self": "#0579aa",
+    "Shell": "#89e051",
+    "Shen": "#120F14",
+    "Slash": "#007eff",
+    "Slice": "#003fa2",
+    "Smalltalk": "#596706",
+    "Solidity": "#AA6746",
+    "SourcePawn": "#5c7611",
+    "SQF": "#3F3F3F",
+    "Squirrel": "#800000",
+    "SRecode Template": "#348a34",
+    "Stan": "#b2011d",
+    "Standard ML": "#dc566d",
+    "SuperCollider": "#46390b",
+    "Svelte": "#ff3e00",
+    "Swift": "#ffac45",
+    "SystemVerilog": "#DAE1C2",
+    "Tcl": "#e4cc98",
+    "Terra": "#00004c",
+    "TeX": "#3D6117",
+    "TI Program": "#A0AA87",
+    "Turing": "#cf142b",
+    "TypeScript": "#2b7489",
+    "UnrealScript": "#a54c4d",
+    "Vala": "#fbe5cd",
+    "VCL": "#148AA8",
+    "Verilog": "#b2b7f8",
+    "VHDL": "#adb2cb",
+    "Vim script": "#199f4b",
+    "Visual Basic": "#945db7",
+    "Volt": "#1F1F1F",
+    "Vue": "#2c3e50",
+    "wdl": "#42f1f4",
+    "WebAssembly": "#04133b",
+    "wisp": "#7582D1",
+    "X10": "#4B6BEF",
+    "xBase": "#403a40",
+    "XC": "#99DA07",
+    "XQuery": "#5232e7",
+    "XSLT": "#EB8CEB",
+    "Yacc": "#4B6C4B",
+    "YARA": "#220000",
+    "YASnippet": "#32AB90",
+    "ZAP": "#0d665e",
+    "Zephir": "#118f9e",
+    "Zig": "#ec915c",
+    "ZIL": "#dc75e5"
+  },
+  "editors": {
+    "Android Studio": "#99cd00",
+    "AppCode": "#04dbde",
+    "Aptana": "#ec8623",
+    "Atom": "#49b77e",
+    "Azure Data Studio": "#0271c6",
+    "Blender": "#fb8007",
+    "Brackets": "#067dc3",
+    "Chrome": "#fdd308",
+    "CLion": "#14c9a5",
+    "Cloud9": "#25a6d9",
+    "Coda": "#3e8e1c",
+    "CodeTasty": "#7368a8",
+    "DataGrip": "#907cf2",
+    "DBeaver": "#897363",
+    "Eclipse": "#443582",
+    "Emacs": "#8c76c3",
+    "Eric": "#423f13",
+    "Excel": "#0f753c",
+    "Flash Builder": "#aca3a4",
+    "Gedit": "#872114",
+    "GoLand": "#bd4ffc",
+    "HBuilder X": "#1ba334",
+    "IntelliJ IDEA": "#237ce2",
+    "IntelliJ": "#237ce2",
+    "Kakoune": "#dd5f4a",
+    "Kate": "#3f4040",
+    "Komodo": "#fcb414",
+    "Micro": "#2c3494",
+    "MonoDevelop": "#6185b3",
+    "NetBeans": "#f1f6e2",
+    "Notepad++": "#9ecf54",
+    "Nova": "#ff054a",
+    "Onivim": "#ee848e",
+    "PhpStorm": "#d93ac1",
+    "PowerPoint": "#c6421f",
+    "Processing": "#6a7152",
+    "PyCharm": "#d2ee5c",
+    "Pymakr": "#323d4f",
+    "Rider": "#f7a415",
+    "RubyMine": "#ff6336",
+    "Sketch": "#fdad00",
+    "SlickEdit": "#57ca57",
+    "SQL Server Management Studio": "#ffb901",
+    "Sublime Text": "#ff9800",
+    "Terminal": "#133f1c",
+    "TeXstudio": "#652d96",
+    "TextMate": "#822b7a",
+    "Unity": "#222d36",
+    "Vim": "#068304",
+    "Visual Studio": "#9460cd",
+    "VS Code": "#027acd",
+    "VSCode": "#027acd",
+    "WebStorm": "#00c6d7",
+    "Word": "#0f4091",
+    "WPS Office": "#fc6143",
+    "Xamarin": "#3598db",
+    "Xcode": "#3fa7e4",
+    "Adobe XD": "#fd27bc",
+    "Code::Blocks": "#d0ce71",
+    "Embarcadero Delphi": "#d9242a",
+    "EmEditor": "#ed3103",
+    "Figma": "#c7b9ff",
+    "Firefox": "#d96527",
+    "Geany": "#fbec75",
+    "Light Table": "#007ac1",
+    "MacRabbit Espresso": "#e6593f",
+    "MySQL Workbench": "#245279",
+    "Photoshop": "#0a0054",
+    "QtCreator": "#7fc342",
+    "RStudio": "#2369c7",
+    "WebMatrix": "#aeaeae"
+  },
+  "operating_systems": {
+    "Linux": "#f0b912",
+    "Windows": "#00b7ee",
+    "Mac": "#4d66cb"
+  }
+}

data/data.go

@@ -0,0 +1,6 @@
+package data
+
+import _ "embed"
+
+//go:embed colors.json
+var ColorsFile []byte

doap.rdf

@@ -0,0 +1,41 @@
+<?xml version="1.0"?>
+<?xml-stylesheet type="text/xsl"?>
+<rdf:RDF xml:lang="en"
+         xmlns="http://usefulinc.com/ns/doap#"
+         xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns:asfext="http://projects.apache.org/ns/asfext#"
+         xmlns:foaf="http://xmlns.com/foaf/0.1/">
+
+    <Project xmlns="http://usefulinc.com/ns/doap#">
+        <name>wakapi</name>
+        <created>2019-10-10</created>
+        <shortdesc xml:lang="en">A minimalist, self-hosted WakaTime-compatible backend for coding statistics</shortdesc>
+        <description xml:lang="en">A minimalist, self-hosted WakaTime-compatible backend to track your time spent coding on different projects, in different editors and languages</description>
+        <homepage rdf:resource="https://github.com/muety/wakapi"/>
+        <bug-database rdf:resource="https://github.com/muety/wakapi/issues"/>
+        <license rdf:resource="https://github.com/muety/wakapi/blob/master/LICENSE"/>
+        <language>en</language>
+        <programming-language>Go</programming-language>
+        <os>Linux</os>
+        <os>Windows</os>
+        <os>MacOS</os>
+
+        <category rdf:resource="http://projects.apache.org/category/http"/>
+        <category rdf:resource="http://projects.apache.org/category/mobile"/>
+
+        <maintainer>
+            <foaf:Person>
+                <foaf:name>Ferdinand Mütsch</foaf:name>
+                <foaf:homepage rdf:resource="https://muetsch.io/"/>
+            </foaf:Person>
+        </maintainer>
+
+        <repository>
+            <GitRepository>
+                <browse rdf:resource="https://github.com/muety/wakapi"/>
+                <location rdf:resource="https://github.com/muety/wakapi.git"/>
+            </GitRepository>
+        </repository>
+    </Project>
+
+</rdf:RDF>

docker-compose.yml

@@ -1,40 +1,24 @@
-version: "3.1"
+version: '3.7'
 
 services:
   wakapi:
-    image: wakapi:latest
-    build:
-      dockerfile: Dockerfile
-      context: .
-    container_name: wakapi
-    environment:
-      - WAKAPI_DB_USER=wakapi
-      - WAKAPI_DB_PASSWORD=supersecretpassword
-      - WAKAPI_DB_HOST=wakapi_db
-      - WAKAPI_DB_NAME=wakapi_db
+    build: .
     ports:
-      - "3000:3000"
-    depends_on:
-      - wakapi_db
-  wakapi_db:
-    image: linuxserver/mariadb
-    container_name: wakapi_db
+      - 3000:3000
+    restart: always
     environment:
-      - PUID=1000
-      - PGID=1000
-      - MYSQL_ROOT_PASSWORD=rootpass
-      - TZ=Europe/London
-      - MYSQL_DATABASE=wakapi_db
-      - MYSQL_USER=wakapi
-      - MYSQL_PASSWORD=supersecretpassword
-    restart: unless-stopped
-    ports:
-      - "3306:3306"
-    volumes:
-      - "dbdata:/config"
+      # See README.md and config.default.yml for all config options
+      WAKAPI_DB_TYPE: "postgres"
+      WAKAPI_DB_NAME: "wakapi"
+      WAKAPI_DB_USER: "wakapi"
+      WAKAPI_DB_PASSWORD: "choose-a-password"
+      WAKAPI_DB_HOST: "db"
+      WAKAPI_DB_PORT: "5432"
+      ENVIRONMENT: "prod"
 
-volumes:
-  dbdata:
-
-              
-      
+  db:
+    image: postgres:12.3
+    environment:
+      POSTGRES_USER: "wakapi"
+      POSTGRES_PASSWORD: "choose-a-password"
+      POSTGRES_DB: "wakapi"

entrypoint.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+if [ "$WAKAPI_DB_TYPE" == "sqlite3" ] || [ "$WAKAPI_DB_TYPE" == "" ]; then
+  ./wakapi
+else
+  echo "Waiting for database to come up"
+  ./wait-for-it.sh   "$WAKAPI_DB_HOST:$WAKAPI_DB_PORT" -s -t 60 -- ./wakapi
+fi

go.mod

@@ -1,19 +1,34 @@
-module github.com/n1try/wakapi
+module github.com/muety/wakapi
 
-go 1.13
+go 1.16
 
 require (
-	github.com/codegangsta/negroni v1.0.0
+	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751
+	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21
+	github.com/emersion/go-smtp v0.15.0
+	github.com/emvi/logbuch v1.1.1
+	github.com/getsentry/sentry-go v0.10.0
+	github.com/go-co-op/gocron v0.3.3
+	github.com/go-openapi/spec v0.20.2 // indirect
+	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.3
-	github.com/jasonlvhit/gocron v0.0.0-20191106203602-f82992d443f4
-	github.com/jinzhu/gorm v1.9.11
-	github.com/joho/godotenv v1.3.0
-	github.com/kr/pretty v0.2.0 // indirect
+	github.com/gorilla/schema v1.1.0
+	github.com/gorilla/securecookie v1.1.1
+	github.com/jinzhu/configor v1.2.0
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-sqlite3 v2.0.3+incompatible // indirect
+	github.com/mitchellh/hashstructure/v2 v2.0.1
 	github.com/patrickmn/go-cache v2.1.0+incompatible
-	github.com/rs/cors v1.7.0
 	github.com/satori/go.uuid v1.2.0
-	github.com/smartystreets/goconvey v1.6.4 // indirect
-	github.com/t-tiger/gorm-bulk-insert v0.0.0-20191014134946-beb77b81825f
-	google.golang.org/appengine v1.6.5 // indirect
-	gopkg.in/ini.v1 v1.50.0
+	github.com/stretchr/testify v1.6.1
+	github.com/swaggo/swag v1.7.0
+	go.uber.org/atomic v1.6.0
+	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
+	golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9
+	golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c // indirect
+	golang.org/x/tools v0.1.0 // indirect
+	gorm.io/driver/mysql v1.0.3
+	gorm.io/driver/postgres v1.0.5
+	gorm.io/driver/sqlite v1.1.3
+	gorm.io/gorm v1.20.11
 )

go.sum

@@ -1,182 +1,430 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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-cloud.google.com/go v0.37.4 h1:glPeL3BQJsbF6aIIYfZizMwc5LTYz250bDMjttbBGAU=
-cloud.google.com/go v0.37.4/go.mod h1:NHPJ89PdicEuT9hdPXMROBD91xc5uRDxsMtSB16k7hw=
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-github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
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+gorm.io/gorm v1.20.11 h1:jYHQ0LLUViV85V8dM1TP9VBBkfzKTnuTXDjYObkI6yc=
+gorm.io/gorm v1.20.11/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=

main.go

@@ -1,210 +1,282 @@
 package main
 
 import (
-	"crypto/md5"
-	"encoding/hex"
+	"embed"
+	"io/fs"
 	"log"
 	"net/http"
 	"os"
 	"strconv"
 	"time"
 
-	"github.com/codegangsta/negroni"
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/handlers"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/migrations"
+	"github.com/muety/wakapi/repositories"
+	"github.com/muety/wakapi/routes/api"
+	"github.com/muety/wakapi/services/mail"
+	"github.com/muety/wakapi/utils"
+	"gorm.io/gorm/logger"
+
 	"github.com/gorilla/mux"
-	"github.com/jinzhu/gorm"
-	"github.com/joho/godotenv"
-	"github.com/rs/cors"
-	uuid "github.com/satori/go.uuid"
-	ini "gopkg.in/ini.v1"
-
-	"github.com/n1try/wakapi/middlewares"
-	"github.com/n1try/wakapi/models"
-	"github.com/n1try/wakapi/routes"
-	"github.com/n1try/wakapi/services"
-	"github.com/n1try/wakapi/utils"
-
-	_ "github.com/jinzhu/gorm/dialects/mysql"
+	"github.com/muety/wakapi/middlewares"
+	"github.com/muety/wakapi/routes"
+	shieldsV1Routes "github.com/muety/wakapi/routes/compat/shields/v1"
+	wtV1Routes "github.com/muety/wakapi/routes/compat/wakatime/v1"
+	"github.com/muety/wakapi/services"
+	_ "gorm.io/driver/mysql"
+	_ "gorm.io/driver/postgres"
+	_ "gorm.io/driver/sqlite"
+	"gorm.io/gorm"
 )
 
-func readConfig() *models.Config {
-	if err := godotenv.Load(); err != nil {
-		log.Fatal(err)
-	}
+// Embed version.txt
+//go:embed version.txt
+var version string
 
-	env, _ := os.LookupEnv("ENV")
-	dbUser, valid := os.LookupEnv("WAKAPI_DB_USER")
-	dbPassword, valid := os.LookupEnv("WAKAPI_DB_PASSWORD")
-	dbHost, valid := os.LookupEnv("WAKAPI_DB_HOST")
-	dbName, valid := os.LookupEnv("WAKAPI_DB_NAME")
-	dbPortStr, valid := os.LookupEnv("WAKAPI_DB_PORT")
-	dbPort, err := strconv.Atoi(dbPortStr)
+// Embed static files
+//go:embed static
+var staticFiles embed.FS
 
-	if !valid {
-		log.Fatal("Environment variables missing or invalid.")
-	}
+var (
+	db     *gorm.DB
+	config *conf.Config
+)
 
-	cfg, err := ini.Load("config.ini")
-	if err != nil {
-		log.Fatalf("Fail to read file: %v", err)
-	}
+var (
+	aliasRepository           repositories.IAliasRepository
+	heartbeatRepository       repositories.IHeartbeatRepository
+	userRepository            repositories.IUserRepository
+	languageMappingRepository repositories.ILanguageMappingRepository
+	summaryRepository         repositories.ISummaryRepository
+	keyValueRepository        repositories.IKeyValueRepository
+)
 
-	dbMaxConn := cfg.Section("database").Key("max_connections").MustUint(1)
-	addr := cfg.Section("server").Key("listen").MustString("127.0.0.1")
-	port, err := strconv.Atoi(os.Getenv("PORT"))
-	if err != nil {
-		port = cfg.Section("server").Key("port").MustInt()
-	}
+var (
+	aliasService           services.IAliasService
+	heartbeatService       services.IHeartbeatService
+	userService            services.IUserService
+	languageMappingService services.ILanguageMappingService
+	summaryService         services.ISummaryService
+	aggregationService     services.IAggregationService
+	mailService            services.IMailService
+	keyValueService        services.IKeyValueService
+	miscService            services.IMiscService
+)
 
-	cleanUp := cfg.Section("app").Key("cleanup").MustBool(false)
+// TODO: Refactor entire project to be structured after business domains
 
-	// Read custom languages
-	customLangs := make(map[string]string)
-	languageKeys := cfg.Section("languages").Keys()
-	for _, k := range languageKeys {
-		customLangs[k.Name()] = k.MustString("unknown")
-	}
+// @title Wakapi API
+// @version 1.0
+// @description REST API to interact with [Wakapi](https://wakapi.dev)
+// @description
+// @description ## Authentication
+// @description Set header `Authorization` to your API Key encoded as Base64 and prefixed with `Basic`
+// @description **Example:** `Basic ODY2NDhkNzQtMTljNS00NTJiLWJhMDEtZmIzZWM3MGQ0YzJmCg==`
 
-	return &models.Config{
-		Env:             env,
-		Port:            port,
-		Addr:            addr,
-		DbHost:          dbHost,
-		DbPort:          uint(dbPort),
-		DbUser:          dbUser,
-		DbPassword:      dbPassword,
-		DbName:          dbName,
-		DbDialect:       "mysql",
-		DbMaxConn:       dbMaxConn,
-		CleanUp:         cleanUp,
-		CustomLanguages: customLangs,
-	}
-}
+// @contact.name Ferdinand Mütsch
+// @contact.url https://github.com/muety
+// @contact.email ferdinand@muetsch.io
 
+// @license.name GPL-3.0
+// @license.url https://github.com/muety/wakapi/blob/master/LICENSE
+
+// @securitydefinitions.apikey ApiKeyAuth
+// @in header
+// @name Authorization
+
+// @BasePath /api
 func main() {
-	// Read Config
-	config := readConfig()
+	config = conf.Load(version)
+
+	// Set log level
+	if config.IsDev() {
+		logbuch.SetLevel(logbuch.LevelDebug)
+	} else {
+		logbuch.SetLevel(logbuch.LevelInfo)
+	}
+
+	// Set up GORM
+	gormLogger := logger.New(
+		log.New(os.Stdout, "", log.LstdFlags),
+		logger.Config{
+			SlowThreshold: time.Minute,
+			Colorful:      false,
+			LogLevel:      logger.Silent,
+		},
+	)
 
 	// Connect to database
-	db, err := gorm.Open(config.DbDialect, utils.MakeConnectionString(config))
-	db.LogMode(config.IsDev())
-	db.DB().SetMaxIdleConns(int(config.DbMaxConn))
-	db.DB().SetMaxOpenConns(int(config.DbMaxConn))
-	if err != nil {
-		log.Fatal("Could not connect to database.")
+	var err error
+	db, err = gorm.Open(config.Db.GetDialector(), &gorm.Config{Logger: gormLogger})
+	if config.Db.Dialect == "sqlite3" {
+		db.Raw("PRAGMA foreign_keys = ON;")
 	}
-	defer db.Close()
+
+	if config.IsDev() {
+		db = db.Debug()
+	}
+	sqlDb, _ := db.DB()
+	sqlDb.SetMaxIdleConns(int(config.Db.MaxConn))
+	sqlDb.SetMaxOpenConns(int(config.Db.MaxConn))
+	if err != nil {
+		logbuch.Error(err.Error())
+		logbuch.Fatal("could not connect to database")
+	}
+	defer sqlDb.Close()
 
 	// Migrate database schema
-	db.AutoMigrate(&models.User{})
-	db.AutoMigrate(&models.Alias{})
-	db.AutoMigrate(&models.Summary{})
-	db.AutoMigrate(&models.SummaryItem{})
-	db.AutoMigrate(&models.Heartbeat{}).AddForeignKey("user_id", "users(id)", "RESTRICT", "RESTRICT")
-	db.AutoMigrate(&models.SummaryItem{}).AddForeignKey("summary_id", "summaries(id)", "CASCADE", "CASCADE")
+	migrations.Run(db, config)
 
-	// Custom migrations and initial data
-	addDefaultUser(db, config)
-	migrateLanguages(db, config)
+	// Repositories
+	aliasRepository = repositories.NewAliasRepository(db)
+	heartbeatRepository = repositories.NewHeartbeatRepository(db)
+	userRepository = repositories.NewUserRepository(db)
+	languageMappingRepository = repositories.NewLanguageMappingRepository(db)
+	summaryRepository = repositories.NewSummaryRepository(db)
+	keyValueRepository = repositories.NewKeyValueRepository(db)
 
 	// Services
-	aliasSrvc := &services.AliasService{Config: config, Db: db}
-	heartbeatSrvc := &services.HeartbeatService{Config: config, Db: db}
-	userSrvc := &services.UserService{Config: config, Db: db}
-	summarySrvc := &services.SummaryService{Config: config, Db: db, HeartbeatService: heartbeatSrvc, AliasService: aliasSrvc}
-	aggregationSrvc := &services.AggregationService{Config: config, Db: db, UserService: userSrvc, SummaryService: summarySrvc, HeartbeatService: heartbeatSrvc}
+	aliasService = services.NewAliasService(aliasRepository)
+	userService = services.NewUserService(userRepository)
+	languageMappingService = services.NewLanguageMappingService(languageMappingRepository)
+	heartbeatService = services.NewHeartbeatService(heartbeatRepository, languageMappingService)
+	summaryService = services.NewSummaryService(summaryRepository, heartbeatService, aliasService)
+	aggregationService = services.NewAggregationService(userService, summaryService, heartbeatService)
+	mailService = mail.NewMailService()
+	keyValueService = services.NewKeyValueService(keyValueRepository)
+	miscService = services.NewMiscService(userService, summaryService, keyValueService)
 
-	services := []services.Initializable{aliasSrvc, heartbeatSrvc, summarySrvc, userSrvc, aggregationSrvc}
-	for _, s := range services {
-		s.Init()
-	}
+	// Schedule background tasks
+	go aggregationService.Schedule()
+	go miscService.ScheduleCountTotalTime()
 
-	// Aggregate heartbeats to summaries and persist them
-	go aggregationSrvc.Schedule()
+	routes.Init()
 
-	if config.CleanUp {
-		go heartbeatSrvc.ScheduleCleanUp()
-	}
+	// API Handlers
+	healthApiHandler := api.NewHealthApiHandler(db)
+	heartbeatApiHandler := api.NewHeartbeatApiHandler(userService, heartbeatService, languageMappingService)
+	summaryApiHandler := api.NewSummaryApiHandler(userService, summaryService)
+	metricsHandler := api.NewMetricsHandler(userService, summaryService, heartbeatService, keyValueService)
 
-	// Handlers
-	heartbeatHandler := &routes.HeartbeatHandler{HeartbeatSrvc: heartbeatSrvc}
-	summaryHandler := &routes.SummaryHandler{SummarySrvc: summarySrvc}
+	// Compat Handlers
+	wakatimeV1AllHandler := wtV1Routes.NewAllTimeHandler(userService, summaryService)
+	wakatimeV1SummariesHandler := wtV1Routes.NewSummariesHandler(userService, summaryService)
+	wakatimeV1StatsHandler := wtV1Routes.NewStatsHandler(userService, summaryService)
+	shieldV1BadgeHandler := shieldsV1Routes.NewBadgeHandler(summaryService, userService)
 
-	// Middlewares
-	authenticateMiddleware := &middlewares.AuthenticateMiddleware{UserSrvc: userSrvc}
-	basicAuthMiddleware := &middlewares.RequireBasicAuthMiddleware{}
-	corsMiddleware := cors.New(cors.Options{
-		AllowedOrigins: []string{"*"},
-		AllowedHeaders: []string{"*"},
-		Debug:          false,
-	})
+	// MVC Handlers
+	summaryHandler := routes.NewSummaryHandler(summaryService, userService)
+	settingsHandler := routes.NewSettingsHandler(userService, heartbeatService, summaryService, aliasService, aggregationService, languageMappingService, keyValueService, mailService)
+	homeHandler := routes.NewHomeHandler(keyValueService)
+	loginHandler := routes.NewLoginHandler(userService, mailService)
+	imprintHandler := routes.NewImprintHandler(keyValueService)
 
-	// Setup Routing
+	// Setup Routers
 	router := mux.NewRouter()
-	mainRouter := mux.NewRouter().PathPrefix("/").Subrouter()
-	apiRouter := mux.NewRouter().PathPrefix("/api").Subrouter()
+	rootRouter := router.PathPrefix("/").Subrouter()
+	apiRouter := router.PathPrefix("/api").Subrouter().StrictSlash(true)
 
-	// Main Routes
-	mainRouter.Path("/").Methods(http.MethodGet).HandlerFunc(summaryHandler.Index)
+	// Globally used middlewares
+	router.Use(middlewares.NewPrincipalMiddleware())
+	router.Use(middlewares.NewLoggingMiddleware(logbuch.Info, []string{"/assets"}))
+	router.Use(handlers.RecoveryHandler())
+	if config.Sentry.Dsn != "" {
+		router.Use(middlewares.NewSentryMiddleware())
+	}
 
-	// API Routes
-	apiRouter.Path("/heartbeat").Methods(http.MethodPost).HandlerFunc(heartbeatHandler.Post)
-	apiRouter.Path("/summary").Methods(http.MethodGet).HandlerFunc(summaryHandler.Get)
+	// Route registrations
+	homeHandler.RegisterRoutes(rootRouter)
+	loginHandler.RegisterRoutes(rootRouter)
+	imprintHandler.RegisterRoutes(rootRouter)
+	summaryHandler.RegisterRoutes(rootRouter)
+	settingsHandler.RegisterRoutes(rootRouter)
+
+	// API route registrations
+	summaryApiHandler.RegisterRoutes(apiRouter)
+	healthApiHandler.RegisterRoutes(apiRouter)
+	heartbeatApiHandler.RegisterRoutes(apiRouter)
+	metricsHandler.RegisterRoutes(apiRouter)
+	wakatimeV1AllHandler.RegisterRoutes(apiRouter)
+	wakatimeV1SummariesHandler.RegisterRoutes(apiRouter)
+	wakatimeV1StatsHandler.RegisterRoutes(apiRouter)
+	shieldV1BadgeHandler.RegisterRoutes(apiRouter)
 
 	// Static Routes
-	router.PathPrefix("/assets").Handler(negroni.Classic().With(negroni.Wrap(http.FileServer(http.Dir("./static")))))
-
-	// Sub-Routes Setup
-	router.PathPrefix("/api").Handler(negroni.Classic().
-		With(corsMiddleware).
-		With(
-			negroni.HandlerFunc(authenticateMiddleware.Handle),
-			negroni.Wrap(apiRouter),
-		))
-
-	router.PathPrefix("/").Handler(negroni.Classic().With(
-		negroni.HandlerFunc(basicAuthMiddleware.Handle),
-		negroni.HandlerFunc(authenticateMiddleware.Handle),
-		negroni.Wrap(mainRouter),
-	))
+	// https://github.com/golang/go/issues/43431
+	static, _ := fs.Sub(staticFiles, "static")
+	fileServer := http.FileServer(utils.NeuteredFileSystem{Fs: http.FS(static)})
+	router.PathPrefix("/assets").Handler(fileServer)
+	router.PathPrefix("/swagger-ui").Handler(fileServer)
+	router.PathPrefix("/docs").Handler(
+		middlewares.NewFileTypeFilterMiddleware([]string{".go"})(fileServer),
+	)
 
 	// Listen HTTP
-	portString := config.Addr + ":" + strconv.Itoa(config.Port)
-	s := &http.Server{
-		Handler:      router,
-		Addr:         portString,
-		ReadTimeout:  10 * time.Second,
-		WriteTimeout: 10 * time.Second,
-	}
-	log.Printf("Listening on %+s\n", portString)
-	s.ListenAndServe()
+	listen(router)
 }
 
-func migrateLanguages(db *gorm.DB, cfg *models.Config) {
-	for k, v := range cfg.CustomLanguages {
-		result := db.Model(models.Heartbeat{}).
-			Where("language = ?", "").
-			Where("entity LIKE ?", "%."+k).
-			Updates(models.Heartbeat{Language: v})
-		if result.Error != nil {
-			log.Fatal(result.Error)
-		}
-		if result.RowsAffected > 0 {
-			log.Printf("Migrated %+v rows for custom language %+s.\n", result.RowsAffected, k)
-		}
-	}
-}
+func listen(handler http.Handler) {
+	var s4, s6 *http.Server
 
-func addDefaultUser(db *gorm.DB, cfg *models.Config) {
-	pw := md5.Sum([]byte(models.DefaultPassword))
-	pwString := hex.EncodeToString(pw[:])
-	apiKey := uuid.NewV4().String()
-	u := &models.User{ID: models.DefaultUser, Password: pwString, ApiKey: apiKey}
-	result := db.FirstOrCreate(u, &models.User{ID: u.ID})
-	if result.Error != nil {
-		log.Println("Unable to create default user.")
-		log.Fatal(result.Error)
+	// IPv4
+	if config.Server.ListenIpV4 != "" {
+		bindString4 := config.Server.ListenIpV4 + ":" + strconv.Itoa(config.Server.Port)
+		s4 = &http.Server{
+			Handler:      handler,
+			Addr:         bindString4,
+			ReadTimeout:  10 * time.Second,
+			WriteTimeout: 10 * time.Second,
+		}
 	}
-	if result.RowsAffected > 0 {
-		log.Printf("Created default user '%s' with password '%s' and API key '%s'.\n", u.ID, models.DefaultPassword, u.ApiKey)
+
+	// IPv6
+	if config.Server.ListenIpV6 != "" {
+		bindString6 := "[" + config.Server.ListenIpV6 + "]:" + strconv.Itoa(config.Server.Port)
+		s6 = &http.Server{
+			Handler:      handler,
+			Addr:         bindString6,
+			ReadTimeout:  10 * time.Second,
+			WriteTimeout: 10 * time.Second,
+		}
 	}
+
+	if config.UseTLS() {
+		if s4 != nil {
+			logbuch.Info("--> Listening for HTTPS on %s... ✅", s4.Addr)
+			go func() {
+				if err := s4.ListenAndServeTLS(config.Server.TlsCertPath, config.Server.TlsKeyPath); err != nil {
+					logbuch.Fatal(err.Error())
+				}
+			}()
+		}
+		if s6 != nil {
+			logbuch.Info("--> Listening for HTTPS on %s... ✅", s6.Addr)
+			go func() {
+				if err := s6.ListenAndServeTLS(config.Server.TlsCertPath, config.Server.TlsKeyPath); err != nil {
+					logbuch.Fatal(err.Error())
+				}
+			}()
+		}
+	} else {
+		if s4 != nil {
+			logbuch.Info("--> Listening for HTTP on %s... ✅", s4.Addr)
+			go func() {
+				if err := s4.ListenAndServe(); err != nil {
+					logbuch.Fatal(err.Error())
+				}
+			}()
+		}
+		if s6 != nil {
+			logbuch.Info("--> Listening for HTTP on %s... ✅", s6.Addr)
+			go func() {
+				if err := s6.ListenAndServe(); err != nil {
+					logbuch.Fatal(err.Error())
+				}
+			}()
+		}
+	}
+
+	<-make(chan interface{}, 1)
 }

middlewares/authenticate.go

@@ -1,116 +1,110 @@
 package middlewares
 
 import (
-	"context"
-	"crypto/md5"
-	"encoding/base64"
-	"encoding/hex"
-	"errors"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
 	"net/http"
-	"regexp"
 	"strings"
-	"time"
-
-	"github.com/patrickmn/go-cache"
-
-	"github.com/n1try/wakapi/models"
-	"github.com/n1try/wakapi/services"
 )
 
 type AuthenticateMiddleware struct {
-	UserSrvc    *services.UserService
-	Cache       *cache.Cache
-	Initialized bool
+	config           *conf.Config
+	userSrvc         services.IUserService
+	optionalForPaths []string
+	redirectTarget   string // optional
 }
 
-func (m *AuthenticateMiddleware) Init() {
-	if m.Cache == nil {
-		m.Cache = cache.New(1*time.Hour, 2*time.Hour)
+func NewAuthenticateMiddleware(userService services.IUserService) *AuthenticateMiddleware {
+	return &AuthenticateMiddleware{
+		config:           conf.Get(),
+		userSrvc:         userService,
+		optionalForPaths: []string{},
 	}
-	m.Initialized = true
 }
 
-func (m *AuthenticateMiddleware) Handle(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
-	if !m.Initialized {
-		m.Init()
-	}
+func (m *AuthenticateMiddleware) WithOptionalFor(paths []string) *AuthenticateMiddleware {
+	m.optionalForPaths = paths
+	return m
+}
 
+func (m *AuthenticateMiddleware) WithRedirectTarget(path string) *AuthenticateMiddleware {
+	m.redirectTarget = path
+	return m
+}
+
+func (m *AuthenticateMiddleware) Handler(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		m.ServeHTTP(w, r, h.ServeHTTP)
+	})
+}
+
+func (m *AuthenticateMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
 	var user *models.User
-	var userKey string
-	user, userKey, err := m.tryGetUserByPassword(r)
+	user, err := m.tryGetUserByCookie(r)
 
 	if err != nil {
-		user, userKey, err = m.tryGetUserByApiKey(r)
+		user, err = m.tryGetUserByApiKey(r)
 	}
 
-	if err != nil {
-		w.WriteHeader(http.StatusUnauthorized)
+	if err != nil || user == nil {
+		if m.isOptional(r.URL.Path) {
+			next(w, r)
+			return
+		}
+
+		if m.redirectTarget == "" {
+			w.WriteHeader(http.StatusUnauthorized)
+			w.Write([]byte(conf.ErrUnauthorized))
+		} else {
+			http.SetCookie(w, m.config.GetClearCookie(models.AuthCookieKey, "/"))
+			http.Redirect(w, r, m.redirectTarget, http.StatusFound)
+		}
 		return
 	}
 
-	m.Cache.Set(userKey, user, cache.DefaultExpiration)
-
-	ctx := context.WithValue(r.Context(), models.UserKey, user)
-	next(w, r.WithContext(ctx))
+	SetPrincipal(r, user)
+	next(w, r)
 }
 
-func (m *AuthenticateMiddleware) tryGetUserByApiKey(r *http.Request) (*models.User, string, error) {
-	authHeader := strings.Split(r.Header.Get("Authorization"), " ")
-	if len(authHeader) != 2 || authHeader[0] != "Basic" {
-		return nil, "", errors.New("failed to extract API key")
+func (m *AuthenticateMiddleware) isOptional(requestPath string) bool {
+	for _, p := range m.optionalForPaths {
+		if strings.HasPrefix(requestPath, p) || requestPath == p {
+			return true
+		}
 	}
+	return false
+}
 
-	key, err := base64.StdEncoding.DecodeString(authHeader[1])
+func (m *AuthenticateMiddleware) tryGetUserByApiKey(r *http.Request) (*models.User, error) {
+	key, err := utils.ExtractBearerAuth(r)
 	if err != nil {
-		return nil, "", err
+		return nil, err
 	}
 
 	var user *models.User
-	userKey := strings.TrimSpace(string(key))
-	cachedUser, ok := m.Cache.Get(userKey)
-	if !ok {
-		user, err = m.UserSrvc.GetUserByKey(userKey)
-		if err != nil {
-			return nil, "", err
-		}
-	} else {
-		user = cachedUser.(*models.User)
-	}
-	return user, userKey, nil
-}
-
-func (m *AuthenticateMiddleware) tryGetUserByPassword(r *http.Request) (*models.User, string, error) {
-	authHeader := strings.Split(r.Header.Get("Authorization"), " ")
-	if len(authHeader) != 2 || authHeader[0] != "Basic" {
-		return nil, "", errors.New("failed to extract API key")
-	}
-
-	hash, err := base64.StdEncoding.DecodeString(authHeader[1])
-	userKey := strings.TrimSpace(string(hash))
+	userKey := strings.TrimSpace(key)
+	user, err = m.userSrvc.GetUserByKey(userKey)
 	if err != nil {
-		return nil, "", err
+		return nil, err
+	}
+	return user, nil
+}
+
+func (m *AuthenticateMiddleware) tryGetUserByCookie(r *http.Request) (*models.User, error) {
+	username, err := utils.ExtractCookieAuth(r, m.config)
+	if err != nil {
+		return nil, err
 	}
 
-	var user *models.User
-	cachedUser, ok := m.Cache.Get(userKey)
-	if !ok {
-		re := regexp.MustCompile(`^(.+):(.+)$`)
-		groups := re.FindAllStringSubmatch(userKey, -1)
-		if len(groups) == 0 || len(groups[0]) != 3 {
-			return nil, "", errors.New("failed to parse user agent string")
-		}
-		userId, password := groups[0][1], groups[0][2]
-		user, err = m.UserSrvc.GetUserById(userId)
-		if err != nil {
-			return nil, "", err
-		}
-		passwordHash := md5.Sum([]byte(password))
-		passwordHashString := hex.EncodeToString(passwordHash[:])
-		if passwordHashString != user.Password {
-			return nil, "", errors.New("invalid password")
-		}
-	} else {
-		user = cachedUser.(*models.User)
+	user, err := m.userSrvc.GetUserById(*username)
+	if err != nil {
+		return nil, err
 	}
-	return user, userKey, nil
+
+	// no need to check password here, as securecookie decoding will fail anyway,
+	// if cookie is not properly signed
+
+	return user, nil
 }

middlewares/authenticate_test.go

@@ -0,0 +1,56 @@
+package middlewares
+
+import (
+	"encoding/base64"
+	"fmt"
+	"github.com/muety/wakapi/mocks"
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/assert"
+	"net/http"
+	"testing"
+)
+
+func TestAuthenticateMiddleware_tryGetUserByApiKey_Success(t *testing.T) {
+	testApiKey := "z5uig69cn9ut93n"
+	testToken := base64.StdEncoding.EncodeToString([]byte(testApiKey))
+	testUser := &models.User{ApiKey: testApiKey}
+
+	mockRequest := &http.Request{
+		Header: http.Header{
+			"Authorization": []string{fmt.Sprintf("Basic %s", testToken)},
+		},
+	}
+
+	userServiceMock := new(mocks.UserServiceMock)
+	userServiceMock.On("GetUserByKey", testApiKey).Return(testUser, nil)
+
+	sut := NewAuthenticateMiddleware(userServiceMock)
+
+	result, err := sut.tryGetUserByApiKey(mockRequest)
+
+	assert.Nil(t, err)
+	assert.Equal(t, testUser, result)
+}
+
+func TestAuthenticateMiddleware_tryGetUserByApiKey_InvalidHeader(t *testing.T) {
+	testApiKey := "z5uig69cn9ut93n"
+	testToken := base64.StdEncoding.EncodeToString([]byte(testApiKey))
+
+	mockRequest := &http.Request{
+		Header: http.Header{
+			// 'Basic' prefix missing here
+			"Authorization": []string{fmt.Sprintf("%s", testToken)},
+		},
+	}
+
+	userServiceMock := new(mocks.UserServiceMock)
+
+	sut := NewAuthenticateMiddleware(userServiceMock)
+
+	result, err := sut.tryGetUserByApiKey(mockRequest)
+
+	assert.Error(t, err)
+	assert.Nil(t, result)
+}
+
+// TODO: somehow test cookie auth function

middlewares/basicauth.go

@@ -1,14 +0,0 @@
-package middlewares
-
-import (
-	"net/http"
-)
-
-type RequireBasicAuthMiddleware struct{}
-
-func (m *RequireBasicAuthMiddleware) Init() {}
-
-func (m *RequireBasicAuthMiddleware) Handle(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
-	w.Header().Set("WWW-Authenticate", `Basic realm="Restricted"`)
-	next(w, r)
-}

middlewares/custom/wakatime.go

@@ -0,0 +1,94 @@
+package relay
+
+import (
+	"bytes"
+	"encoding/base64"
+	"fmt"
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"time"
+)
+
+/* Middleware to conditionally relay heartbeats to Wakatime */
+type WakatimeRelayMiddleware struct {
+	httpClient *http.Client
+}
+
+func NewWakatimeRelayMiddleware() *WakatimeRelayMiddleware {
+	return &WakatimeRelayMiddleware{
+		httpClient: &http.Client{
+			Timeout: 10 * time.Second,
+		},
+	}
+}
+
+func (m *WakatimeRelayMiddleware) Handler(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		m.ServeHTTP(w, r, h.ServeHTTP)
+	})
+}
+
+func (m *WakatimeRelayMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+	defer next(w, r)
+
+	if r.Method != http.MethodPost {
+		return
+	}
+
+	user := middlewares.GetPrincipal(r)
+	if user == nil || user.WakatimeApiKey == "" {
+		return
+	}
+
+	body, _ := ioutil.ReadAll(r.Body)
+	r.Body.Close()
+	r.Body = ioutil.NopCloser(bytes.NewBuffer(body))
+
+	headers := http.Header{
+		"X-Machine-Name": r.Header.Values("X-Machine-Name"),
+		"Content-Type":   r.Header.Values("Content-Type"),
+		"Accept":         r.Header.Values("Accept"),
+		"User-Agent":     r.Header.Values("User-Agent"),
+		"X-Origin": []string{
+			fmt.Sprintf("wakapi v%s", config.Get().Version),
+		},
+		"Authorization": []string{
+			fmt.Sprintf("Basic %s", base64.StdEncoding.EncodeToString([]byte(user.WakatimeApiKey))),
+		},
+	}
+
+	go m.send(
+		http.MethodPost,
+		config.WakatimeApiUrl+config.WakatimeApiHeartbeatsBulkUrl,
+		bytes.NewReader(body),
+		headers,
+	)
+}
+
+func (m *WakatimeRelayMiddleware) send(method, url string, body io.Reader, headers http.Header) {
+	request, err := http.NewRequest(method, url, body)
+	if err != nil {
+		logbuch.Warn("error constructing relayed request – %v", err)
+		return
+	}
+
+	for k, v := range headers {
+		for _, h := range v {
+			request.Header.Set(k, h)
+		}
+	}
+
+	response, err := m.httpClient.Do(request)
+	if err != nil {
+		logbuch.Warn("error executing relayed request – %v", err)
+		return
+	}
+
+	if response.StatusCode < 200 || response.StatusCode >= 300 {
+		logbuch.Warn("failed to relay request, got status %d", response.StatusCode)
+	}
+}

middlewares/filetype.go

@@ -0,0 +1,32 @@
+package middlewares
+
+import (
+	"net/http"
+	"strings"
+)
+
+type SuffixFilterMiddleware struct {
+	handler     http.Handler
+	filterTypes []string
+}
+
+func NewFileTypeFilterMiddleware(filter []string) func(http.Handler) http.Handler {
+	return func(h http.Handler) http.Handler {
+		return &SuffixFilterMiddleware{
+			handler:     h,
+			filterTypes: filter,
+		}
+	}
+}
+
+func (f *SuffixFilterMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	path := strings.ToLower(r.URL.Path)
+	for _, t := range f.filterTypes {
+		if strings.HasSuffix(path, strings.ToLower(t)) {
+			w.WriteHeader(http.StatusForbidden)
+			w.Write([]byte("403 forbidden"))
+			return
+		}
+	}
+	f.handler.ServeHTTP(w, r)
+}

middlewares/logging.go

@@ -0,0 +1,153 @@
+package middlewares
+
+// Borrowed from https://gist.github.com/elithrar/887d162dfd0c539b700ab4049c76e22b
+
+import (
+	"io"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type logFunc func(string, ...interface{})
+
+type LoggingMiddleware struct {
+	handler         http.Handler
+	logFunc         logFunc
+	excludePrefixes []string
+}
+
+func NewLoggingMiddleware(logFunc logFunc, excludePrefixes []string) func(http.Handler) http.Handler {
+	return func(h http.Handler) http.Handler {
+		return &LoggingMiddleware{
+			handler:         h,
+			logFunc:         logFunc,
+			excludePrefixes: excludePrefixes,
+		}
+	}
+}
+
+func (lg *LoggingMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ww := wrapWriter(w)
+
+	start := time.Now()
+	lg.handler.ServeHTTP(ww, r)
+	end := time.Now()
+	duration := end.Sub(start)
+
+	path := strings.ToLower(r.URL.Path)
+	for _, prefix := range lg.excludePrefixes {
+		if strings.HasPrefix(path, prefix) {
+			return
+		}
+	}
+
+	lg.logFunc(
+		"[request] status=%d, method=%s, uri=%s, duration=%v, bytes=%d, addr=%s, user=%s",
+		ww.Status(),
+		r.Method,
+		r.URL.String(),
+		duration,
+		ww.BytesWritten(),
+		readUserIP(r),
+		readUserID(r),
+	)
+}
+
+func readUserIP(r *http.Request) string {
+	ip := r.Header.Get("X-Real-Ip")
+	if ip == "" {
+		ip = r.Header.Get("X-Forwarded-For")
+	}
+	if ip == "" {
+		ip = r.RemoteAddr
+	}
+	return ip
+}
+
+func readUserID(r *http.Request) string {
+	if user := GetPrincipal(r); user != nil {
+		return user.ID
+	}
+	return "-"
+}
+
+// The below writer-wrapping code has been lifted from
+// https://github.com/zenazn/goji/blob/master/web/middleware/logger.go - because
+// it does exactly what is needed, and it's unlikely to change in any
+// significant way that makes copying worse-off than importing. MIT licensed
+// and (c) Carl Jackson.
+
+// writerProxy is a proxy around an http.ResponseWriter that allows you to hook
+// into various parts of the response process.
+type writerProxy interface {
+	http.ResponseWriter
+	// Status returns the HTTP status of the request, or 0 if one has not
+	// yet been sent.
+	Status() int
+	// BytesWritten returns the total number of bytes sent to the client.
+	BytesWritten() int
+	// Tee causes the response body to be written to the given io.Writer in
+	// addition to proxying the writes through. Only one io.Writer can be
+	// tee'd to at once: setting a second one will overwrite the first.
+	// Writes will be sent to the proxy before being written to this
+	// io.Writer. It is illegal for the tee'd writer to be modified
+	// concurrently with writes.
+	Tee(io.Writer)
+	// Unwrap returns the original proxied target.
+	Unwrap() http.ResponseWriter
+}
+
+// wrapWriter wraps an http.ResponseWriter, returning a proxy that allows you to
+// hook into various parts of the response process.
+func wrapWriter(w http.ResponseWriter) writerProxy {
+	return &basicWriter{ResponseWriter: w}
+}
+
+// basicWriter wraps a http.ResponseWriter that implements the minimal
+// http.ResponseWriter interface.
+type basicWriter struct {
+	http.ResponseWriter
+	wroteHeader bool
+	code        int
+	bytes       int
+	tee         io.Writer
+}
+
+func (b *basicWriter) WriteHeader(code int) {
+	if !b.wroteHeader {
+		b.code = code
+		b.wroteHeader = true
+		b.ResponseWriter.WriteHeader(code)
+	}
+}
+func (b *basicWriter) Write(buf []byte) (int, error) {
+	b.WriteHeader(http.StatusOK)
+	n, err := b.ResponseWriter.Write(buf)
+	if b.tee != nil {
+		_, err2 := b.tee.Write(buf[:n])
+		// Prefer errors generated by the proxied writer.
+		if err == nil {
+			err = err2
+		}
+	}
+	b.bytes += n
+	return n, err
+}
+func (b *basicWriter) maybeWriteHeader() {
+	if !b.wroteHeader {
+		b.WriteHeader(http.StatusOK)
+	}
+}
+func (b *basicWriter) Status() int {
+	return b.code
+}
+func (b *basicWriter) BytesWritten() int {
+	return b.bytes
+}
+func (b *basicWriter) Tee(w io.Writer) {
+	b.tee = w
+}
+func (b *basicWriter) Unwrap() http.ResponseWriter {
+	return b.ResponseWriter
+}

middlewares/principal.go

@@ -0,0 +1,64 @@
+package middlewares
+
+import (
+	"context"
+	"github.com/muety/wakapi/models"
+	"net/http"
+)
+
+const keyPrincipal = "principal"
+
+type PrincipalContainer struct {
+	principal *models.User
+}
+
+func (c *PrincipalContainer) SetPrincipal(user *models.User) {
+	c.principal = user
+}
+
+func (c *PrincipalContainer) GetPrincipal() *models.User {
+	return c.principal
+}
+
+// This middleware is a bit of a dirty workaround to the fact that a http.Request's context
+// does not allow to pass values from an inner to an outer middleware. Calling WithContext() on a
+// request shallow-copies the whole request itself and therefore, in a chain of handler1(handler2()),
+// handler 1 will not have access to values handler 2 writes to its context. In addition, Context.WithValue
+// returns a new context with the old context as a parent.
+//
+// As a concrete example, SentryMiddleware as well as LoggingMiddleware should be quite the outer layers,
+// while AuthenticationMiddleware is on the very inside of the chain. However, we still want sentry or the
+// logger to have access to the user object populated by the auth. middleware, if present.
+//
+// This middleware shall be included as the outermost layers and it injects a stateful container that  does
+// nothing but conditionally hold a reference to an authenticated user object.
+//
+// Other reference: https://stackoverflow.com/questions/55972869/send-errors-to-sentry-with-golang-and-mux
+
+type PrincipalMiddleware struct {
+	handler http.Handler
+}
+
+func NewPrincipalMiddleware() func(handler http.Handler) http.Handler {
+	return func(h http.Handler) http.Handler {
+		return &PrincipalMiddleware{handler: h}
+	}
+}
+
+func (p *PrincipalMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ctx := context.WithValue(r.Context(), keyPrincipal, &PrincipalContainer{})
+	p.handler.ServeHTTP(w, r.WithContext(ctx))
+}
+
+func SetPrincipal(r *http.Request, user *models.User) {
+	if p := r.Context().Value(keyPrincipal); p != nil {
+		p.(*PrincipalContainer).SetPrincipal(user)
+	}
+}
+
+func GetPrincipal(r *http.Request) *models.User {
+	if p := r.Context().Value(keyPrincipal); p != nil {
+		return p.(*PrincipalContainer).GetPrincipal()
+	}
+	return nil
+}

middlewares/sentry.go

@@ -0,0 +1,30 @@
+package middlewares
+
+import (
+	"context"
+	"github.com/getsentry/sentry-go"
+	sentryhttp "github.com/getsentry/sentry-go/http"
+	"net/http"
+)
+
+type SentryMiddleware struct {
+	handler http.Handler
+}
+
+func NewSentryMiddleware() func(http.Handler) http.Handler {
+	return func(h http.Handler) http.Handler {
+		return sentryhttp.New(sentryhttp.Options{
+			Repanic: true,
+		}).Handle(&SentryMiddleware{handler: h})
+	}
+}
+
+func (h *SentryMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	ctx := context.WithValue(r.Context(), "-", "-")
+	h.handler.ServeHTTP(w, r.WithContext(ctx))
+	if hub := sentry.GetHubFromContext(ctx); hub != nil {
+		if user := GetPrincipal(r); user != nil {
+			hub.Scope().SetUser(sentry.User{ID: user.ID})
+		}
+	}
+}

migrations/20201103_rename_language_mappings_table.go

@@ -0,0 +1,32 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	f := migrationFunc{
+		name: "20201103-rename_language_mappings_table",
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			migrator := db.Migrator()
+			oldTableName, newTableName := "custom_rules", "language_mappings"
+			oldIndexName, newIndexName := "idx_customrule_user", "idx_language_mapping_user"
+
+			if migrator.HasTable(oldTableName) {
+				logbuch.Info("renaming '%s' table to '%s'", oldTableName, newTableName)
+				if err := migrator.RenameTable(oldTableName, &models.LanguageMapping{}); err != nil {
+					return err
+				}
+
+				logbuch.Info("renaming '%s' index to '%s'", oldIndexName, newIndexName)
+				return migrator.RenameIndex(&models.LanguageMapping{}, oldIndexName, newIndexName)
+			}
+			return nil
+		},
+	}
+
+	registerPreMigration(f)
+}

migrations/20201106_migration_cascade_constraints.go

@@ -0,0 +1,79 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	const name = "20201106-migration_cascade_constraints"
+
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			// drop all already existing foreign key constraints
+			// afterwards let them be re-created by auto migrate with the newly introduced cascade settings,
+
+			migrator := db.Migrator()
+
+			if cfg.Db.Dialect == config.SQLDialectSqlite {
+				// https://stackoverflow.com/a/1884893/3112139
+				// unfortunately, we can't migrate existing sqlite databases to the newly introduced cascade settings
+				// things like deleting all summaries won't work in those cases unless an entirely new db is created
+				logbuch.Info("not attempting to drop and regenerate constraints on sqlite")
+				return nil
+			}
+
+			if !migrator.HasTable(&models.KeyStringValue{}) {
+				logbuch.Info("key-value table not yet existing")
+				return nil
+			}
+
+			condition := "key = ?"
+			if cfg.Db.Dialect == config.SQLDialectMysql {
+				condition = "`key` = ?"
+			}
+			lookupResult := db.Where(condition, name).First(&models.KeyStringValue{})
+			if lookupResult.Error == nil && lookupResult.RowsAffected > 0 {
+				logbuch.Info("no need to migrate '%s'", name)
+				return nil
+			}
+
+			// SELECT * FROM INFORMATION_SCHEMA.table_constraints;
+			constraints := map[string]interface{}{
+				"fk_summaries_editors":           &models.SummaryItem{},
+				"fk_summaries_languages":         &models.SummaryItem{},
+				"fk_summaries_machines":          &models.SummaryItem{},
+				"fk_summaries_operating_systems": &models.SummaryItem{},
+				"fk_summaries_projects":          &models.SummaryItem{},
+				"fk_summary_items_summary":       &models.SummaryItem{},
+				"fk_summaries_user":              &models.Summary{},
+				"fk_language_mappings_user":      &models.LanguageMapping{},
+				"fk_heartbeats_user":             &models.Heartbeat{},
+				"fk_aliases_user":                &models.Alias{},
+			}
+
+			for name, table := range constraints {
+				if migrator.HasConstraint(table, name) {
+					logbuch.Info("dropping constraint '%s'", name)
+					if err := migrator.DropConstraint(table, name); err != nil {
+						return err
+					}
+				}
+			}
+
+			if err := db.Create(&models.KeyStringValue{
+				Key:   name,
+				Value: "done",
+			}).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+
+	registerPreMigration(f)
+}

migrations/20210202_fix_cascade_for_alias_user_constraint.go

@@ -0,0 +1,58 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	const name = "20210202-fix_cascade_for_alias_user_constraint"
+
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			migrator := db.Migrator()
+
+			if cfg.Db.Dialect == config.SQLDialectSqlite {
+				// see 20201106_migration_cascade_constraints
+				logbuch.Info("not attempting to drop and regenerate constraints on sqlite")
+				return nil
+			}
+
+			if !migrator.HasTable(&models.KeyStringValue{}) {
+				logbuch.Info("key-value table not yet existing")
+				return nil
+			}
+
+			condition := "key = ?"
+			if cfg.Db.Dialect == config.SQLDialectMysql {
+				condition = "`key` = ?"
+			}
+			lookupResult := db.Where(condition, name).First(&models.KeyStringValue{})
+			if lookupResult.Error == nil && lookupResult.RowsAffected > 0 {
+				logbuch.Info("no need to migrate '%s'", name)
+				return nil
+			}
+
+			if migrator.HasConstraint(&models.Alias{}, "fk_aliases_user") {
+				logbuch.Info("dropping constraint 'fk_aliases_user'")
+				if err := migrator.DropConstraint(&models.Alias{}, "fk_aliases_user"); err != nil {
+					return err
+				}
+			}
+
+			if err := db.Create(&models.KeyStringValue{
+				Key:   name,
+				Value: "done",
+			}).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+
+	registerPreMigration(f)
+}

migrations/20210206_drop_badges_column_add_sharing_flags.go

@@ -0,0 +1,55 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	f := migrationFunc{
+		name: "20210206_drop_badges_column_add_sharing_flags",
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			migrator := db.Migrator()
+
+			if !migrator.HasColumn(&models.User{}, "badges_enabled") {
+				// empty database or already migrated, nothing to migrate
+				return nil
+			}
+
+			if err := db.Exec("UPDATE users SET share_data_max_days = 30 WHERE badges_enabled = TRUE").Error; err != nil {
+				return err
+			}
+			if err := db.Exec("UPDATE users SET share_editors = TRUE WHERE badges_enabled = TRUE").Error; err != nil {
+				return err
+			}
+			if err := db.Exec("UPDATE users SET share_languages = TRUE WHERE badges_enabled = TRUE").Error; err != nil {
+				return err
+			}
+			if err := db.Exec("UPDATE users SET share_projects = TRUE WHERE badges_enabled = TRUE").Error; err != nil {
+				return err
+			}
+			if err := db.Exec("UPDATE users SET share_oss = TRUE WHERE badges_enabled = TRUE").Error; err != nil {
+				return err
+			}
+			if err := db.Exec("UPDATE users SET share_machines = TRUE WHERE badges_enabled = TRUE").Error; err != nil {
+				return err
+			}
+
+			if cfg.Db.Dialect == config.SQLDialectSqlite {
+				logbuch.Info("not attempting to drop column 'badges_enabled' on sqlite")
+				return nil
+			}
+
+			if err := migrator.DropColumn(&models.User{}, "badges_enabled"); err != nil {
+				return err
+			}
+			logbuch.Info("dropped column 'badges_enabled' after substituting it by sharing indicators")
+
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}

migrations/20210213_add_has_data_field.go

@@ -0,0 +1,41 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	const name = "20210213-add_has_data_field"
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			condition := "key = ?"
+			if cfg.Db.Dialect == config.SQLDialectMysql {
+				condition = "`key` = ?"
+			}
+			lookupResult := db.Where(condition, name).First(&models.KeyStringValue{})
+			if lookupResult.Error == nil && lookupResult.RowsAffected > 0 {
+				logbuch.Info("no need to migrate '%s'", name)
+				return nil
+			}
+
+			if err := db.Exec("UPDATE users SET has_data = TRUE WHERE TRUE").Error; err != nil {
+				return err
+			}
+
+			if err := db.Create(&models.KeyStringValue{
+				Key:   name,
+				Value: "done",
+			}).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}

migrations/20210221_add_created_date_column.go

@@ -0,0 +1,41 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+func init() {
+	const name = "20210221-add_created_date_column"
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			condition := "key = ?"
+			if cfg.Db.Dialect == config.SQLDialectMysql {
+				condition = "`key` = ?"
+			}
+			lookupResult := db.Where(condition, name).First(&models.KeyStringValue{})
+			if lookupResult.Error == nil && lookupResult.RowsAffected > 0 {
+				logbuch.Info("no need to migrate '%s'", name)
+				return nil
+			}
+
+			if err := db.Exec("UPDATE heartbeats SET created_at = time WHERE TRUE").Error; err != nil {
+				return err
+			}
+
+			if err := db.Create(&models.KeyStringValue{
+				Key:   name,
+				Value: "done",
+			}).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}

migrations/20210411_add_imprint_content.go

@@ -0,0 +1,47 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+func init() {
+	const name = "20210411-add_imprint_content"
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			condition := "key = ?"
+			if cfg.Db.Dialect == config.SQLDialectMysql {
+				condition = "`key` = ?"
+			}
+			lookupResult := db.Where(condition, name).First(&models.KeyStringValue{})
+			if lookupResult.Error == nil && lookupResult.RowsAffected > 0 {
+				logbuch.Info("no need to migrate '%s'", name)
+				return nil
+			}
+
+			imprintKv := &models.KeyStringValue{Key: "imprint", Value: "no content here"}
+			if err := db.
+				Clauses(clause.OnConflict{UpdateAll: false, DoNothing: true}).
+				Where(condition, imprintKv.Key).
+				Assign(imprintKv).
+				Create(imprintKv).Error; err != nil {
+				return err
+			}
+
+			if err := db.Create(&models.KeyStringValue{
+				Key:   name,
+				Value: "done",
+			}).Error; err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}

migrations/20210411_drop_migrations_table.go

@@ -0,0 +1,22 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"gorm.io/gorm"
+)
+
+func init() {
+	const name = "20210411-drop_migrations_table"
+	f := migrationFunc{
+		name: name,
+		f: func(db *gorm.DB, cfg *config.Config) error {
+			if err := db.Migrator().DropTable("gorp_migrations"); err != nil {
+				logbuch.Info("dropped table 'gorp_migrations'")
+			}
+			return nil
+		},
+	}
+
+	registerPostMigration(f)
+}

migrations/migrations.go

@@ -0,0 +1,75 @@
+package migrations
+
+import (
+	"github.com/emvi/logbuch"
+	"github.com/muety/wakapi/config"
+	"gorm.io/gorm"
+	"sort"
+	"strings"
+)
+
+type migrationFunc struct {
+	f    func(db *gorm.DB, cfg *config.Config) error
+	name string
+}
+
+type migrationFuncs []migrationFunc
+
+var (
+	preMigrations  migrationFuncs
+	postMigrations migrationFuncs
+)
+
+func registerPreMigration(f migrationFunc) {
+	preMigrations = append(preMigrations, f)
+}
+
+func registerPostMigration(f migrationFunc) {
+	postMigrations = append(postMigrations, f)
+}
+
+func Run(db *gorm.DB, cfg *config.Config) {
+	RunPreMigrations(db, cfg)
+	RunSchemaMigrations(db, cfg)
+	RunPostMigrations(db, cfg)
+}
+
+func RunSchemaMigrations(db *gorm.DB, cfg *config.Config) {
+	if err := cfg.GetMigrationFunc(cfg.Db.Dialect)(db); err != nil {
+		logbuch.Fatal(err.Error())
+	}
+}
+
+func RunPreMigrations(db *gorm.DB, cfg *config.Config) {
+	sort.Sort(preMigrations)
+
+	for _, m := range preMigrations {
+		logbuch.Info("potentially running migration '%s'", m.name)
+		if err := m.f(db, cfg); err != nil {
+			logbuch.Fatal("migration '%s' failed – %v", m.name, err)
+		}
+	}
+}
+
+func RunPostMigrations(db *gorm.DB, cfg *config.Config) {
+	sort.Sort(postMigrations)
+
+	for _, m := range postMigrations {
+		logbuch.Info("potentially running migration '%s'", m.name)
+		if err := m.f(db, cfg); err != nil {
+			logbuch.Fatal("migration '%s' failed – %v", m.name, err)
+		}
+	}
+}
+
+func (m migrationFuncs) Len() int {
+	return len(m)
+}
+
+func (m migrationFuncs) Less(i, j int) bool {
+	return strings.Compare(m[i].name, m[j].name) < 0
+}
+
+func (m migrationFuncs) Swap(i, j int) {
+	m[i], m[j] = m[j], m[i]
+}

mocks/alias_repository.go

@@ -0,0 +1,45 @@
+package mocks
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/mock"
+)
+
+type AliasRepositoryMock struct {
+	mock.Mock
+}
+
+func (m *AliasRepositoryMock) GetByUser(s string) ([]*models.Alias, error) {
+	args := m.Called(s)
+	return args.Get(0).([]*models.Alias), args.Error(1)
+}
+
+func (m *AliasRepositoryMock) GetByUserAndKey(s string, s2 string) ([]*models.Alias, error) {
+	args := m.Called(s, s2)
+	return args.Get(0).([]*models.Alias), args.Error(1)
+}
+
+func (m *AliasRepositoryMock) GetByUserAndKeyAndType(s string, s2 string, u uint8) ([]*models.Alias, error) {
+	args := m.Called(s, s2, u)
+	return args.Get(0).([]*models.Alias), args.Error(1)
+}
+
+func (m *AliasRepositoryMock) GetByUserAndTypeAndValue(s string, u uint8, s2 string) (*models.Alias, error) {
+	args := m.Called(s, u, s2)
+	return args.Get(0).(*models.Alias), args.Error(1)
+}
+
+func (m *AliasRepositoryMock) Insert(s *models.Alias) (*models.Alias, error) {
+	args := m.Called(s)
+	return args.Get(0).(*models.Alias), args.Error(1)
+}
+
+func (m *AliasRepositoryMock) Delete(u uint) error {
+	args := m.Called(u)
+	return args.Error(0)
+}
+
+func (m *AliasRepositoryMock) DeleteBatch(u []uint) error {
+	args := m.Called(u)
+	return args.Error(0)
+}

mocks/alias_service.go

@@ -0,0 +1,50 @@
+package mocks
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/mock"
+)
+
+type AliasServiceMock struct {
+	mock.Mock
+}
+
+func (m *AliasServiceMock) IsInitialized(s string) bool {
+	args := m.Called(s)
+	return args.Bool(0)
+}
+
+func (m *AliasServiceMock) InitializeUser(s string) error {
+	args := m.Called(s)
+	return args.Error(0)
+}
+
+func (m *AliasServiceMock) GetAliasOrDefault(s string, u uint8, s2 string) (string, error) {
+	args := m.Called(s, u, s2)
+	return args.String(0), args.Error(1)
+}
+
+func (m *AliasServiceMock) GetByUser(s string) ([]*models.Alias, error) {
+	args := m.Called(s)
+	return args.Get(0).([]*models.Alias), args.Error(1)
+}
+
+func (m *AliasServiceMock) GetByUserAndKeyAndType(s string, s2 string, u uint8) ([]*models.Alias, error) {
+	args := m.Called(s, s2, u)
+	return args.Get(0).([]*models.Alias), args.Error(1)
+}
+
+func (m *AliasServiceMock) Create(a *models.Alias) (*models.Alias, error) {
+	args := m.Called(a)
+	return args.Get(0).(*models.Alias), args.Error(1)
+}
+
+func (m *AliasServiceMock) Delete(s *models.Alias) error {
+	args := m.Called(s)
+	return args.Error(0)
+}
+
+func (m *AliasServiceMock) DeleteMulti(a []*models.Alias) error {
+	args := m.Called(a)
+	return args.Error(0)
+}

mocks/heartbeat_service.go

@@ -0,0 +1,56 @@
+package mocks
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/mock"
+	"time"
+)
+
+type HeartbeatServiceMock struct {
+	mock.Mock
+}
+
+func (m *HeartbeatServiceMock) Insert(heartbeat *models.Heartbeat) error {
+	args := m.Called(heartbeat)
+	return args.Error(0)
+}
+
+func (m *HeartbeatServiceMock) InsertBatch(heartbeats []*models.Heartbeat) error {
+	args := m.Called(heartbeats)
+	return args.Error(0)
+}
+
+func (m *HeartbeatServiceMock) Count() (int64, error) {
+	args := m.Called()
+	return int64(args.Int(0)), args.Error(1)
+}
+
+func (m *HeartbeatServiceMock) CountByUser(user *models.User) (int64, error) {
+	args := m.Called(user)
+	return args.Get(0).(int64), args.Error(0)
+}
+
+func (m *HeartbeatServiceMock) CountByUsers(users []*models.User) ([]*models.CountByUser, error) {
+	args := m.Called(users)
+	return args.Get(0).([]*models.CountByUser), args.Error(0)
+}
+
+func (m *HeartbeatServiceMock) GetAllWithin(time time.Time, time2 time.Time, user *models.User) ([]*models.Heartbeat, error) {
+	args := m.Called(time, time2, user)
+	return args.Get(0).([]*models.Heartbeat), args.Error(1)
+}
+
+func (m *HeartbeatServiceMock) GetFirstByUsers() ([]*models.TimeByUser, error) {
+	args := m.Called()
+	return args.Get(0).([]*models.TimeByUser), args.Error(1)
+}
+
+func (m *HeartbeatServiceMock) GetLatestByOriginAndUser(s string, user *models.User) (*models.Heartbeat, error) {
+	args := m.Called(s, user)
+	return args.Get(0).(*models.Heartbeat), args.Error(1)
+}
+
+func (m *HeartbeatServiceMock) DeleteBefore(time time.Time) error {
+	args := m.Called(time)
+	return args.Error(0)
+}

mocks/summary_repository.go

@@ -0,0 +1,31 @@
+package mocks
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/mock"
+	"time"
+)
+
+type SummaryRepositoryMock struct {
+	mock.Mock
+}
+
+func (m *SummaryRepositoryMock) Insert(summary *models.Summary) error {
+	args := m.Called(summary)
+	return args.Error(0)
+}
+
+func (m *SummaryRepositoryMock) GetByUserWithin(user *models.User, time time.Time, time2 time.Time) ([]*models.Summary, error) {
+	args := m.Called(user, time, time2)
+	return args.Get(0).([]*models.Summary), args.Error(1)
+}
+
+func (m *SummaryRepositoryMock) GetLastByUser() ([]*models.TimeByUser, error) {
+	args := m.Called()
+	return args.Get(0).([]*models.TimeByUser), args.Error(1)
+}
+
+func (m *SummaryRepositoryMock) DeleteByUser(s string) error {
+	args := m.Called(s)
+	return args.Error(0)
+}

mocks/user_service.go

@@ -0,0 +1,89 @@
+package mocks
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/mock"
+)
+
+type UserServiceMock struct {
+	mock.Mock
+}
+
+func (m *UserServiceMock) GetUserById(s string) (*models.User, error) {
+	args := m.Called(s)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) GetUserByKey(s string) (*models.User, error) {
+	args := m.Called(s)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) GetUserByEmail(s string) (*models.User, error) {
+	args := m.Called(s)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) GetUserByResetToken(s string) (*models.User, error) {
+	args := m.Called(s)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) GetAll() ([]*models.User, error) {
+	args := m.Called()
+	return args.Get(0).([]*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) GetActive() ([]*models.User, error) {
+	args := m.Called()
+	return args.Get(0).([]*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) Count() (int64, error) {
+	args := m.Called()
+	return int64(args.Int(0)), args.Error(1)
+}
+
+func (m *UserServiceMock) CreateOrGet(signup *models.Signup, isAdmin bool) (*models.User, bool, error) {
+	args := m.Called(signup, isAdmin)
+	return args.Get(0).(*models.User), args.Bool(1), args.Error(2)
+}
+
+func (m *UserServiceMock) Update(user *models.User) (*models.User, error) {
+	args := m.Called(user)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) Delete(user *models.User) error {
+	args := m.Called(user)
+	return args.Error(0)
+}
+
+func (m *UserServiceMock) ResetApiKey(user *models.User) (*models.User, error) {
+	args := m.Called(user)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) ToggleBadges(user *models.User) (*models.User, error) {
+	args := m.Called(user)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) SetWakatimeApiKey(user *models.User, s string) (*models.User, error) {
+	args := m.Called(user, s)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) MigrateMd5Password(user *models.User, login *models.Login) (*models.User, error) {
+	args := m.Called(user, login)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) GenerateResetToken(user *models.User) (*models.User, error) {
+	args := m.Called(user)
+	return args.Get(0).(*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) FlushCache() {
+	m.Called()
+}

models/alias.go

@@ -3,7 +3,21 @@ package models
 type Alias struct {
 	ID     uint   `gorm:"primary_key"`
 	Type   uint8  `gorm:"not null; index:idx_alias_type_key"`
+	User   *User  `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
 	UserID string `gorm:"not null; index:idx_alias_user"`
 	Key    string `gorm:"not null; index:idx_alias_type_key"`
 	Value  string `gorm:"not null"`
 }
+
+func (a *Alias) IsValid() bool {
+	return a.Key != "" && a.Value != "" && a.validateType()
+}
+
+func (a *Alias) validateType() bool {
+	for _, t := range SummaryTypes() {
+		if a.Type == t {
+			return true
+		}
+	}
+	return false
+}

models/compat/shields/v1/badge.go

@@ -0,0 +1,37 @@
+package v1
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/utils"
+	"time"
+)
+
+// https://shields.io/endpoint
+
+const (
+	defaultLabel = "coding time"
+	defaultColor = "#2D3748" // not working
+)
+
+type BadgeData struct {
+	SchemaVersion int    `json:"schemaVersion"`
+	Label         string `json:"label"`
+	Message       string `json:"message"`
+	Color         string `json:"color"`
+}
+
+func NewBadgeDataFrom(summary *models.Summary, filters *models.Filters) *BadgeData {
+	var total time.Duration
+	if hasFilter, _, _ := filters.One(); hasFilter {
+		total = summary.TotalTimeByFilters(filters)
+	} else {
+		total = summary.TotalTime()
+	}
+
+	return &BadgeData{
+		SchemaVersion: 1,
+		Label:         defaultLabel,
+		Message:       utils.FmtWakatimeDuration(total),
+		Color:         defaultColor,
+	}
+}

models/compat/wakatime/v1/all_time.go

@@ -0,0 +1,45 @@
+package v1
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/utils"
+	"time"
+)
+
+// https://wakatime.com/developers#all_time_since_today
+
+type AllTimeViewModel struct {
+	Data *AllTimeData `json:"data"`
+}
+
+type AllTimeData struct {
+	TotalSeconds float32       `json:"total_seconds"` // total number of seconds logged since account created
+	Text         string        `json:"text"`          // total time logged since account created as human readable string>
+	IsUpToDate   bool          `json:"is_up_to_date"` // true if the stats are up to date; when false, a 202 response code is returned and stats will be refreshed soon>
+	Range        *AllTimeRange `json:"range"`
+}
+
+type AllTimeRange struct {
+	End       string `json:"end"`
+	EndDate   string `json:"end_date"`
+	Start     string `json:"start"`
+	StartDate string `json:"start_date"`
+	Timezone  string `json:"timezone"`
+}
+
+func NewAllTimeFrom(summary *models.Summary, filters *models.Filters) *AllTimeViewModel {
+	var total time.Duration
+	if key := filters.Project; key != "" {
+		total = summary.TotalTimeByFilters(filters)
+	} else {
+		total = summary.TotalTime()
+	}
+
+	return &AllTimeViewModel{
+		Data: &AllTimeData{
+			TotalSeconds: float32(total.Seconds()),
+			Text:         utils.FmtWakatimeDuration(total),
+			IsUpToDate:   true,
+		},
+	}
+}

models/compat/wakatime/v1/heartbeat.go

@@ -0,0 +1,25 @@
+package v1
+
+import "github.com/muety/wakapi/models"
+
+type HeartbeatsViewModel struct {
+	Data []*HeartbeatEntry `json:"data"`
+}
+
+// Incomplete, for now, only the subset of fields is implemented
+// that is actually required for the import
+
+type HeartbeatEntry struct {
+	Id            string            `json:"id"`
+	Branch        string            `json:"branch"`
+	Category      string            `json:"category"`
+	Entity        string            `json:"entity"`
+	IsWrite       bool              `json:"is_write"`
+	Language      string            `json:"language"`
+	Project       string            `json:"project"`
+	Time          models.CustomTime `json:"time"`
+	Type          string            `json:"type"`
+	UserId        string            `json:"user_id"`
+	MachineNameId string            `json:"machine_name_id"`
+	UserAgentId   string            `json:"user_agent_id"`
+}

models/compat/wakatime/v1/machine.go

@@ -0,0 +1,12 @@
+package v1
+
+// https://wakatime.com/api/v1/users/current/machine_names
+
+type MachineViewModel struct {
+	Data []*MachineEntry `json:"data"`
+}
+
+type MachineEntry struct {
+	Id    string `json:"id"`
+	Value string `json:"value"`
+}

models/compat/wakatime/v1/stats.go

@@ -0,0 +1,78 @@
+package v1
+
+import (
+	"github.com/muety/wakapi/models"
+	"time"
+)
+
+// https://wakatime.com/api/v1/users/current/stats/last_7_days
+// https://pastr.de/p/f2fxg6ragj7z5e7fhsow9rb6
+
+type StatsViewModel struct {
+	Data *StatsData `json:"data"`
+}
+
+type StatsData struct {
+	Username              string            `json:"username"`
+	UserId                string            `json:"user_id"`
+	Start                 time.Time         `json:"start"`
+	End                   time.Time         `json:"end"`
+	TotalSeconds          float64           `json:"total_seconds"`
+	DailyAverage          float64           `json:"daily_average"`
+	DaysIncludingHolidays int               `json:"days_including_holidays"`
+	Editors               []*SummariesEntry `json:"editors"`
+	Languages             []*SummariesEntry `json:"languages"`
+	Machines              []*SummariesEntry `json:"machines"`
+	Projects              []*SummariesEntry `json:"projects"`
+	OperatingSystems      []*SummariesEntry `json:"operating_systems"`
+}
+
+func NewStatsFrom(summary *models.Summary, filters *models.Filters) *StatsViewModel {
+	totalTime := summary.TotalTime()
+	numDays := int(summary.ToTime.T().Sub(summary.FromTime.T()).Hours() / 24)
+
+	data := &StatsData{
+		Username:              summary.UserID,
+		UserId:                summary.UserID,
+		Start:                 summary.FromTime.T(),
+		End:                   summary.ToTime.T(),
+		TotalSeconds:          totalTime.Seconds(),
+		DailyAverage:          totalTime.Seconds() / float64(numDays),
+		DaysIncludingHolidays: numDays,
+	}
+
+	editors := make([]*SummariesEntry, len(summary.Editors))
+	for i, e := range summary.Editors {
+		editors[i] = convertEntry(e, summary.TotalTimeBy(models.SummaryEditor))
+	}
+
+	languages := make([]*SummariesEntry, len(summary.Languages))
+	for i, e := range summary.Languages {
+		languages[i] = convertEntry(e, summary.TotalTimeBy(models.SummaryLanguage))
+	}
+
+	machines := make([]*SummariesEntry, len(summary.Machines))
+	for i, e := range summary.Machines {
+		machines[i] = convertEntry(e, summary.TotalTimeBy(models.SummaryMachine))
+	}
+
+	projects := make([]*SummariesEntry, len(summary.Projects))
+	for i, e := range summary.Projects {
+		projects[i] = convertEntry(e, summary.TotalTimeBy(models.SummaryProject))
+	}
+
+	oss := make([]*SummariesEntry, len(summary.OperatingSystems))
+	for i, e := range summary.OperatingSystems {
+		oss[i] = convertEntry(e, summary.TotalTimeBy(models.SummaryOS))
+	}
+
+	data.Editors = editors
+	data.Languages = languages
+	data.Machines = machines
+	data.Projects = projects
+	data.OperatingSystems = oss
+
+	return &StatsViewModel{
+		Data: data,
+	}
+}

models/compat/wakatime/v1/summaries.go

@@ -0,0 +1,176 @@
+package v1
+
+import (
+	"fmt"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/utils"
+	"math"
+	"sync"
+	"time"
+)
+
+// https://wakatime.com/developers#summaries
+// https://pastr.de/v/736450
+
+type SummariesViewModel struct {
+	Data  []*SummariesData `json:"data"`
+	End   time.Time        `json:"end"`
+	Start time.Time        `json:"start"`
+}
+
+type SummariesData struct {
+	Categories       []*SummariesEntry    `json:"categories"`
+	Dependencies     []*SummariesEntry    `json:"dependencies"`
+	Editors          []*SummariesEntry    `json:"editors"`
+	Languages        []*SummariesEntry    `json:"languages"`
+	Machines         []*SummariesEntry    `json:"machines"`
+	OperatingSystems []*SummariesEntry    `json:"operating_systems"`
+	Projects         []*SummariesEntry    `json:"projects"`
+	GrandTotal       *SummariesGrandTotal `json:"grand_total"`
+	Range            *SummariesRange      `json:"range"`
+}
+
+type SummariesEntry struct {
+	Digital      string  `json:"digital"`
+	Hours        int     `json:"hours"`
+	Minutes      int     `json:"minutes"`
+	Name         string  `json:"name"`
+	Percent      float64 `json:"percent"`
+	Seconds      int     `json:"seconds"`
+	Text         string  `json:"text"`
+	TotalSeconds float64 `json:"total_seconds"`
+}
+
+type SummariesGrandTotal struct {
+	Digital      string  `json:"digital"`
+	Hours        int     `json:"hours"`
+	Minutes      int     `json:"minutes"`
+	Text         string  `json:"text"`
+	TotalSeconds float64 `json:"total_seconds"`
+}
+
+type SummariesRange struct {
+	Date     string    `json:"date"`
+	End      time.Time `json:"end"`
+	Start    time.Time `json:"start"`
+	Text     string    `json:"text"`
+	Timezone string    `json:"timezone"`
+}
+
+func NewSummariesFrom(summaries []*models.Summary, filters *models.Filters) *SummariesViewModel {
+	data := make([]*SummariesData, len(summaries))
+	minDate, maxDate := time.Now().Add(1*time.Second), time.Time{}
+
+	for i, s := range summaries {
+		data[i] = newDataFrom(s)
+
+		if s.FromTime.T().Before(minDate) {
+			minDate = s.FromTime.T()
+		}
+		if s.ToTime.T().After(maxDate) {
+			maxDate = s.ToTime.T()
+		}
+	}
+
+	return &SummariesViewModel{
+		Data:  data,
+		End:   maxDate,
+		Start: minDate,
+	}
+}
+
+func newDataFrom(s *models.Summary) *SummariesData {
+	zone, _ := time.Now().Zone()
+	total := s.TotalTime()
+	totalHrs, totalMins := int(total.Hours()), int((total - time.Duration(total.Hours())*time.Hour).Minutes())
+
+	data := &SummariesData{
+		Categories:       make([]*SummariesEntry, 0),
+		Dependencies:     make([]*SummariesEntry, 0),
+		Editors:          make([]*SummariesEntry, len(s.Editors)),
+		Languages:        make([]*SummariesEntry, len(s.Languages)),
+		Machines:         make([]*SummariesEntry, len(s.Machines)),
+		OperatingSystems: make([]*SummariesEntry, len(s.OperatingSystems)),
+		Projects:         make([]*SummariesEntry, len(s.Projects)),
+		GrandTotal: &SummariesGrandTotal{
+			Digital:      fmt.Sprintf("%d:%d", totalHrs, totalMins),
+			Hours:        totalHrs,
+			Minutes:      totalMins,
+			Text:         utils.FmtWakatimeDuration(total),
+			TotalSeconds: total.Seconds(),
+		},
+		Range: &SummariesRange{
+			Date:     time.Now().Format(time.RFC3339),
+			End:      s.ToTime.T(),
+			Start:    s.FromTime.T(),
+			Text:     "",
+			Timezone: zone,
+		},
+	}
+
+	var wg sync.WaitGroup
+	wg.Add(5)
+
+	go func(data *SummariesData) {
+		defer wg.Done()
+		for i, e := range s.Projects {
+			data.Projects[i] = convertEntry(e, s.TotalTimeBy(models.SummaryProject))
+		}
+	}(data)
+
+	go func(data *SummariesData) {
+		defer wg.Done()
+		for i, e := range s.Editors {
+			data.Editors[i] = convertEntry(e, s.TotalTimeBy(models.SummaryEditor))
+		}
+	}(data)
+
+	go func(data *SummariesData) {
+		defer wg.Done()
+		for i, e := range s.Languages {
+			data.Languages[i] = convertEntry(e, s.TotalTimeBy(models.SummaryLanguage))
+
+		}
+	}(data)
+
+	go func(data *SummariesData) {
+		defer wg.Done()
+		for i, e := range s.OperatingSystems {
+			data.OperatingSystems[i] = convertEntry(e, s.TotalTimeBy(models.SummaryOS))
+		}
+	}(data)
+
+	go func(data *SummariesData) {
+		defer wg.Done()
+		for i, e := range s.Machines {
+			data.Machines[i] = convertEntry(e, s.TotalTimeBy(models.SummaryMachine))
+		}
+	}(data)
+
+	wg.Wait()
+	return data
+}
+
+func convertEntry(e *models.SummaryItem, entityTotal time.Duration) *SummariesEntry {
+	// this is a workaround, since currently, the total time of a summary item is mistakenly represented in seconds
+	// TODO: fix some day, while migrating persisted summary items
+	total := e.Total * time.Second
+	hrs := int(total.Hours())
+	mins := int((total - time.Duration(hrs)*time.Hour).Minutes())
+	secs := int((total - time.Duration(hrs)*time.Hour - time.Duration(mins)*time.Minute).Seconds())
+	percentage := math.Round((total.Seconds()/entityTotal.Seconds())*1e4) / 100
+	if math.IsNaN(percentage) || math.IsInf(percentage, 0) {
+		percentage = 0
+	}
+
+	return &SummariesEntry{
+		Digital:      fmt.Sprintf("%d:%d:%d", hrs, mins, secs),
+		Hours:        hrs,
+		Minutes:      mins,
+		Name:         e.Key,
+		Percent:      percentage,
+		Seconds:      secs,
+		Text:         utils.FmtWakatimeDuration(total),
+		TotalSeconds: total.Seconds(),
+	}
+}

models/compat/wakatime/v1/user_agent.go

@@ -0,0 +1,12 @@
+package v1
+
+type UserAgentsViewModel struct {
+	Data []*UserAgentEntry `json:"data"`
+}
+
+type UserAgentEntry struct {
+	Id     string `json:"id"`
+	Editor string `json:"editor"`
+	Os     string `json:"os"`
+	Value  string `json:"value"`
+}

models/config.go

@@ -1,20 +0,0 @@
-package models
-
-type Config struct {
-	Env             string
-	Port            int
-	Addr            string
-	DbHost          string
-	DbPort          uint
-	DbUser          string
-	DbPassword      string
-	DbName          string
-	DbDialect       string
-	DbMaxConn       uint
-	CleanUp         bool
-	CustomLanguages map[string]string
-}
-
-func (c *Config) IsDev() bool {
-	return c.Env == "dev"
-}

models/filters.go

@@ -0,0 +1,45 @@
+package models
+
+type Filters struct {
+	Project  string
+	OS       string
+	Language string
+	Editor   string
+	Machine  string
+}
+
+type FilterElement struct {
+	Type uint8
+	Key  string
+}
+
+func NewFiltersWith(entity uint8, key string) *Filters {
+	switch entity {
+	case SummaryProject:
+		return &Filters{Project: key}
+	case SummaryOS:
+		return &Filters{OS: key}
+	case SummaryLanguage:
+		return &Filters{Language: key}
+	case SummaryEditor:
+		return &Filters{Editor: key}
+	case SummaryMachine:
+		return &Filters{Machine: key}
+	}
+	return &Filters{}
+}
+
+func (f *Filters) One() (bool, uint8, string) {
+	if f.Project != "" {
+		return true, SummaryProject, f.Project
+	} else if f.OS != "" {
+		return true, SummaryOS, f.OS
+	} else if f.Language != "" {
+		return true, SummaryLanguage, f.Language
+	} else if f.Editor != "" {
+		return true, SummaryEditor, f.Editor
+	} else if f.Machine != "" {
+		return true, SummaryMachine, f.Machine
+	}
+	return false, 0, ""
+}

models/heartbeat.go

@@ -1,88 +1,97 @@
 package models
 
 import (
-	"database/sql/driver"
-	"errors"
-	"regexp"
-	"strconv"
+	"fmt"
+	"github.com/emvi/logbuch"
+	"github.com/mitchellh/hashstructure/v2"
 	"strings"
 	"time"
 )
 
-type HeartbeatReqTime time.Time
-
 type Heartbeat struct {
-	ID              uint             `gorm:"primary_key"`
-	User            *User            `json:"-" gorm:"not null"`
-	UserID          string           `json:"-" gorm:"not null; index:idx_time_user"`
-	Entity          string           `json:"entity" gorm:"not null; index:idx_entity"`
-	Type            string           `json:"type"`
-	Category        string           `json:"category"`
-	Project         string           `json:"project"`
-	Branch          string           `json:"branch"`
-	Language        string           `json:"language" gorm:"index:idx_language"`
-	IsWrite         bool             `json:"is_write"`
-	Editor          string           `json:"editor"`
-	OperatingSystem string           `json:"operating_system"`
-	Time            HeartbeatReqTime `json:"time" gorm:"type:timestamp; default:now(); index:idx_time,idx_time_user"`
-	languageRegex   *regexp.Regexp
+	ID              uint       `gorm:"primary_key" hash:"ignore"`
+	User            *User      `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE;" hash:"ignore"`
+	UserID          string     `json:"-" gorm:"not null; index:idx_time_user"`
+	Entity          string     `json:"entity" gorm:"not null; index:idx_entity"`
+	Type            string     `json:"type"`
+	Category        string     `json:"category"`
+	Project         string     `json:"project"`
+	Branch          string     `json:"branch"`
+	Language        string     `json:"language" gorm:"index:idx_language"`
+	IsWrite         bool       `json:"is_write"`
+	Editor          string     `json:"editor" hash:"ignore"`           // ignored because editor might be parsed differently by wakatime
+	OperatingSystem string     `json:"operating_system" hash:"ignore"` // ignored because os might be parsed differently by wakatime
+	Machine         string     `json:"machine" hash:"ignore"`          // ignored because wakatime api doesn't return machines currently
+	Time            CustomTime `json:"time" gorm:"type:timestamp; index:idx_time,idx_time_user" swaggertype:"primitive,number"`
+	Hash            string     `json:"-" gorm:"type:varchar(17); uniqueIndex"`
+	Origin          string     `json:"-" hash:"ignore"`
+	OriginId        string     `json:"-" hash:"ignore"`
+	CreatedAt       CustomTime `json:"created_at" gorm:"type:timestamp" swaggertype:"primitive,number" hash:"ignore"` // https://gorm.io/docs/conventions.html#CreatedAt
 }
 
 func (h *Heartbeat) Valid() bool {
-	return h.User != nil && h.UserID != "" && h.Time != HeartbeatReqTime(time.Time{})
+	return h.User != nil && h.UserID != "" && h.User.ID == h.UserID && h.Time != CustomTime(time.Time{})
 }
 
-func (h *Heartbeat) Augment(customLangs map[string]string) {
-	if h.Language == "" {
-		if h.languageRegex == nil {
-			h.languageRegex = regexp.MustCompile(`^.+\.(.+)$`)
-		}
-		groups := h.languageRegex.FindAllStringSubmatch(h.Entity, -1)
-		if len(groups) == 0 || len(groups[0]) != 2 {
+func (h *Heartbeat) Augment(languageMappings map[string]string) {
+	for ending, value := range languageMappings {
+		if strings.HasSuffix(h.Entity, "."+ending) {
+			h.Language = value
 			return
 		}
-		ending := groups[0][1]
-		if _, ok := customLangs[ending]; !ok {
-			return
-		}
-		h.Language, _ = customLangs[ending]
 	}
 }
 
-func (j *HeartbeatReqTime) UnmarshalJSON(b []byte) error {
-	s := strings.Split(strings.Trim(string(b), "\""), ".")[0]
-	i, err := strconv.ParseInt(s, 10, 64)
+func (h *Heartbeat) GetKey(t uint8) (key string) {
+	switch t {
+	case SummaryProject:
+		key = h.Project
+	case SummaryEditor:
+		key = h.Editor
+	case SummaryLanguage:
+		key = h.Language
+	case SummaryOS:
+		key = h.OperatingSystem
+	case SummaryMachine:
+		key = h.Machine
+	}
+
+	if key == "" {
+		key = UnknownSummaryKey
+	}
+
+	return key
+}
+
+func (h *Heartbeat) String() string {
+	return fmt.Sprintf(
+		"Heartbeat {user=%s, entity=%s, type=%s, category=%s, project=%s, branch=%s, language=%s, iswrite=%v, editor=%s, os=%s, machine=%s, time=%d}",
+		h.UserID,
+		h.Entity,
+		h.Type,
+		h.Category,
+		h.Project,
+		h.Branch,
+		h.Language,
+		h.IsWrite,
+		h.Editor,
+		h.OperatingSystem,
+		h.Machine,
+		(time.Time(h.Time)).UnixNano(),
+	)
+}
+
+// Hash is used to prevent duplicate heartbeats
+// Using a UNIQUE INDEX over all relevant columns would be more straightforward,
+// whereas manually computing this kind of hash is quite cumbersome. However,
+// such a unique index would, according to https://stackoverflow.com/q/65980064/3112139,
+// essentially double the space required for heartbeats, so we decided to go this way.
+
+func (h *Heartbeat) Hashed() *Heartbeat {
+	hash, err := hashstructure.Hash(h, hashstructure.FormatV2, nil)
 	if err != nil {
-		return err
+		logbuch.Error("CRITICAL ERROR: failed to hash struct – %v", err)
 	}
-	t := time.Unix(i, 0)
-	*j = HeartbeatReqTime(t)
-	return nil
-}
-
-func (j *HeartbeatReqTime) Scan(value interface{}) error {
-	switch value.(type) {
-	case int64:
-		*j = HeartbeatReqTime(time.Unix(123456, 0))
-		break
-	case time.Time:
-		*j = HeartbeatReqTime(value.(time.Time))
-		break
-	default:
-		return errors.New("unsupported type")
-	}
-	return nil
-}
-
-func (j HeartbeatReqTime) Value() (driver.Value, error) {
-	return time.Time(j), nil
-}
-
-func (j HeartbeatReqTime) String() string {
-	t := time.Time(j)
-	return t.Format("2006-01-02 15:04:05")
-}
-
-func (j HeartbeatReqTime) Time() time.Time {
-	return time.Time(j)
+	h.Hash = fmt.Sprintf("%x", hash) // "uint64 values with high bit set are not supported"
+	return h
 }

models/heartbeat_test.go

@@ -0,0 +1,60 @@
+package models
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+	"time"
+)
+
+func TestHeartbeat_Valid_Success(t *testing.T) {
+	sut := &Heartbeat{
+		User: &User{
+			ID: "johndoe@example.org",
+		},
+		UserID: "johndoe@example.org",
+		Time:   CustomTime(time.Now()),
+	}
+	assert.True(t, sut.Valid())
+}
+
+func TestHeartbeat_Valid_MissingUser(t *testing.T) {
+	sut := &Heartbeat{
+		Time: CustomTime(time.Now()),
+	}
+	assert.False(t, sut.Valid())
+}
+
+func TestHeartbeat_Augment(t *testing.T) {
+	testMappings := map[string]string{
+		"py":        "Python3",
+		"foo":       "Foo Script",
+		"blade.php": "Blade",
+	}
+
+	sut1, sut2 := &Heartbeat{
+		Entity:   "~/dev/file.py",
+		Language: "Python",
+	}, &Heartbeat{
+		Entity:   "~/dev/file.blade.php",
+		Language: "unknown",
+	}
+
+	sut1.Augment(testMappings)
+	sut2.Augment(testMappings)
+
+	assert.Equal(t, "Python3", sut1.Language)
+	assert.Equal(t, "Blade", sut2.Language)
+}
+
+func TestHeartbeat_GetKey(t *testing.T) {
+	sut := &Heartbeat{
+		Project: "wakapi",
+	}
+
+	assert.Equal(t, "wakapi", sut.GetKey(SummaryProject))
+	assert.Equal(t, UnknownSummaryKey, sut.GetKey(SummaryOS))
+	assert.Equal(t, UnknownSummaryKey, sut.GetKey(SummaryMachine))
+	assert.Equal(t, UnknownSummaryKey, sut.GetKey(SummaryLanguage))
+	assert.Equal(t, UnknownSummaryKey, sut.GetKey(SummaryEditor))
+	assert.Equal(t, UnknownSummaryKey, sut.GetKey(255))
+}

models/heartbeats.go

@@ -0,0 +1,38 @@
+package models
+
+import "sort"
+
+type Heartbeats []*Heartbeat
+
+func (h Heartbeats) Len() int {
+	return len(h)
+}
+
+func (h Heartbeats) Less(i, j int) bool {
+	return h[i].Time.T().Before(h[j].Time.T())
+}
+
+func (h Heartbeats) Swap(i, j int) {
+	h[i], h[j] = h[j], h[i]
+}
+
+func (h *Heartbeats) Sorted() *Heartbeats {
+	sort.Sort(h)
+	return h
+}
+
+func (h *Heartbeats) First() *Heartbeat {
+	// assumes slice to be sorted
+	if h.Len() == 0 {
+		return nil
+	}
+	return (*h)[0]
+}
+
+func (h *Heartbeats) Last() *Heartbeat {
+	// assumes slice to be sorted
+	if h.Len() == 0 {
+		return nil
+	}
+	return (*h)[h.Len()-1]
+}

models/interval.go

@@ -0,0 +1,46 @@
+package models
+
+// Support Wakapi and WakaTime range / interval identifiers
+// See https://wakatime.com/developers/#summaries
+var (
+	IntervalToday              = &IntervalKey{"today", "Today"}
+	IntervalYesterday          = &IntervalKey{"day", "yesterday", "Yesterday"}
+	IntervalThisWeek           = &IntervalKey{"week", "This Week"}
+	IntervalLastWeek           = &IntervalKey{"Last Week"}
+	IntervalThisMonth          = &IntervalKey{"month", "This Month"}
+	IntervalLastMonth          = &IntervalKey{"Last Month"}
+	IntervalThisYear           = &IntervalKey{"year"}
+	IntervalPast7Days          = &IntervalKey{"7_days", "last_7_days", "Last 7 Days"}
+	IntervalPast7DaysYesterday = &IntervalKey{"Last 7 Days from Yesterday"}
+	IntervalPast14Days         = &IntervalKey{"Last 14 Days"}
+	IntervalPast30Days         = &IntervalKey{"30_days", "last_30_days", "Last 30 Days"}
+	IntervalPast12Months       = &IntervalKey{"12_months", "last_12_months"}
+	IntervalAny                = &IntervalKey{"any"}
+)
+
+var AllIntervals = []*IntervalKey{
+	IntervalToday,
+	IntervalYesterday,
+	IntervalThisWeek,
+	IntervalLastWeek,
+	IntervalThisMonth,
+	IntervalLastMonth,
+	IntervalThisYear,
+	IntervalPast7Days,
+	IntervalPast7DaysYesterday,
+	IntervalPast14Days,
+	IntervalPast30Days,
+	IntervalPast12Months,
+	IntervalAny,
+}
+
+type IntervalKey []string
+
+func (k *IntervalKey) HasAlias(s string) bool {
+	for _, e := range *k {
+		if e == s {
+			return true
+		}
+	}
+	return false
+}

models/language_mapping.go

@@ -0,0 +1,21 @@
+package models
+
+type LanguageMapping struct {
+	ID        uint   `json:"id" gorm:"primary_key"`
+	User      *User  `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	UserID    string `json:"-" gorm:"not null; index:idx_language_mapping_user; uniqueIndex:idx_language_mapping_composite"`
+	Extension string `json:"extension" gorm:"uniqueIndex:idx_language_mapping_composite; type:varchar(16)"`
+	Language  string `json:"language" gorm:"type:varchar(64)"`
+}
+
+func (m *LanguageMapping) IsValid() bool {
+	return m.validateLanguage() && m.validateExtension()
+}
+
+func (m *LanguageMapping) validateLanguage() bool {
+	return len(m.Language) >= 1
+}
+
+func (m *LanguageMapping) validateExtension() bool {
+	return len(m.Extension) >= 1
+}

models/mail.go

@@ -0,0 +1,45 @@
+package models
+
+import (
+	"fmt"
+	"strings"
+)
+
+type Mail struct {
+	From    MailAddress
+	To      MailAddresses
+	Subject string
+	Body    string
+	Type    string
+}
+
+func (m *Mail) WithText(text string) *Mail {
+	m.Body = text
+	m.Type = "text/plain; charset=UTF-8"
+	return m
+}
+
+func (m *Mail) WithHTML(html string) *Mail {
+	m.Body = html
+	m.Type = "text/html; charset=UTF-8"
+	return m
+}
+
+func (m *Mail) String() string {
+	return fmt.Sprintf("To: %s\r\n"+
+		"From: %s\r\n"+
+		"Subject: %s\r\n"+
+		"Content-Type: %s\r\n"+
+		"\r\n"+
+		"%s\r\n",
+		strings.Join(m.To.RawStrings(), ", "),
+		m.From.String(),
+		m.Subject,
+		m.Type,
+		m.Body,
+	)
+}
+
+func (m *Mail) Reader() *strings.Reader {
+	return strings.NewReader(m.String())
+}

models/mail_address.go

@@ -0,0 +1,66 @@
+package models
+
+import "regexp"
+
+const (
+	MailPattern      = "[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+"
+	EmailAddrPattern = ".*\\s<(" + MailPattern + ")>|(" + MailPattern + ")"
+)
+
+var (
+	mailRegex      *regexp.Regexp
+	emailAddrRegex *regexp.Regexp
+)
+
+func init() {
+	mailRegex = regexp.MustCompile(MailPattern)
+	emailAddrRegex = regexp.MustCompile(EmailAddrPattern)
+}
+
+type MailAddress string
+
+type MailAddresses []MailAddress
+
+func (m MailAddress) String() string {
+	return string(m)
+}
+
+func (m MailAddress) Raw() string {
+	match := emailAddrRegex.FindStringSubmatch(string(m))
+	if len(match) == 3 {
+		if match[2] != "" {
+			return match[2]
+		}
+		return match[1]
+	}
+	return ""
+}
+
+func (m MailAddress) Valid() bool {
+	return emailAddrRegex.Match([]byte(m))
+}
+
+func (m MailAddresses) Strings() []string {
+	out := make([]string, len(m))
+	for i, s := range m {
+		out[i] = s.String()
+	}
+	return out
+}
+
+func (m MailAddresses) RawStrings() []string {
+	out := make([]string, len(m))
+	for i, s := range m {
+		out[i] = s.Raw()
+	}
+	return out
+}
+
+func (m MailAddresses) AllValid() bool {
+	for _, a := range m {
+		if !a.Valid() {
+			return false
+		}
+	}
+	return true
+}

models/metrics/counter_metric.go

@@ -0,0 +1,22 @@
+package metrics
+
+import "fmt"
+
+type CounterMetric struct {
+	Name   string
+	Value  int
+	Desc   string
+	Labels Labels
+}
+
+func (c CounterMetric) Key() string {
+	return c.Name
+}
+
+func (c CounterMetric) Print() string {
+	return fmt.Sprintf("%s%s %d", c.Name, c.Labels.Print(), c.Value)
+}
+
+func (c CounterMetric) Header() string {
+	return fmt.Sprintf("# HELP %s %s\n# TYPE %s counter", c.Name, c.Desc, c.Name)
+}

models/metrics/label.go

@@ -0,0 +1,28 @@
+package metrics
+
+import (
+	"fmt"
+	"strings"
+)
+
+type Labels []Label
+
+type Label struct {
+	Key   string
+	Value string
+}
+
+func (l Labels) Print() string {
+	printedLabels := make([]string, len(l))
+	for i, e := range l {
+		printedLabels[i] = e.Print()
+	}
+	if len(l) == 0 {
+		return ""
+	}
+	return fmt.Sprintf("{%s}", strings.Join(printedLabels, ","))
+}
+
+func (l Label) Print() string {
+	return fmt.Sprintf("%s=\"%s\"", l.Key, l.Value)
+}

models/metrics/metric.go

@@ -0,0 +1,43 @@
+package metrics
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Hand-crafted Prometheus metrics
+// Since we're only using very simple counters in this application,
+// we don't actually need the official client SDK as a dependency
+
+type Metrics []Metric
+
+func (m Metrics) Print() (output string) {
+	printedMetrics := make(map[string]bool)
+	for _, m := range m {
+		if _, ok := printedMetrics[m.Key()]; !ok {
+			output += fmt.Sprintf("%s\n", m.Header())
+			printedMetrics[m.Key()] = true
+		}
+		output += fmt.Sprintf("%s\n", m.Print())
+	}
+
+	return output
+}
+
+func (m Metrics) Len() int {
+	return len(m)
+}
+
+func (m Metrics) Less(i, j int) bool {
+	return strings.Compare(m[i].Key(), m[j].Key()) < 0
+}
+
+func (m Metrics) Swap(i, j int) {
+	m[i], m[j] = m[j], m[i]
+}
+
+type Metric interface {
+	Key() string
+	Header() string
+	Print() string
+}

models/models.go

@@ -0,0 +1,5 @@
+package models
+
+func init() {
+	// nothing no init here, yet
+}

models/shared.go

@@ -1,5 +1,99 @@
 package models
 
-const (
-	UserKey = "user"
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"gorm.io/gorm"
+	"math"
+	"strconv"
+	"strings"
+	"time"
 )
+
+const (
+	UserKey       = "user"
+	ImprintKey    = "imprint"
+	AuthCookieKey = "wakapi_auth"
+)
+
+type MigrationFunc func(db *gorm.DB) error
+
+type KeyStringValue struct {
+	Key   string `gorm:"primary_key"`
+	Value string `gorm:"type:text"`
+}
+
+type Interval struct {
+	Start time.Time
+	End   time.Time
+}
+
+type CustomTime time.Time
+
+func (j *CustomTime) MarshalJSON() ([]byte, error) {
+	return json.Marshal(j.String())
+}
+
+func (j *CustomTime) UnmarshalJSON(b []byte) error {
+	s := strings.Replace(strings.Trim(string(b), "\""), ".", "", 1)
+	i, err := strconv.ParseInt(s, 10, 64)
+	if err != nil {
+		return err
+	}
+	t := time.Unix(0, i*int64(math.Pow10(19-len(s))))
+	*j = CustomTime(t)
+	return nil
+}
+
+// heartbeat timestamps arrive as strings for sqlite and as time.Time for postgres
+func (j *CustomTime) Scan(value interface{}) error {
+	var (
+		t   time.Time
+		err error
+	)
+
+	switch value.(type) {
+	case string:
+		t, err = time.Parse("2006-01-02 15:04:05-07:00", value.(string))
+		if err != nil {
+			return errors.New(fmt.Sprintf("unsupported date time format: %s", value))
+		}
+	case int64:
+		t = time.Unix(0, value.(int64))
+		break
+	case time.Time:
+		t = value.(time.Time)
+		break
+	default:
+		return errors.New(fmt.Sprintf("unsupported type: %T", value))
+	}
+
+	t = time.Unix(0, (t.UnixNano()/int64(time.Millisecond))*int64(time.Millisecond)) // round to millisecond precision
+	*j = CustomTime(t)
+
+	return nil
+}
+
+func (j *CustomTime) Hash() (uint64, error) {
+	return uint64((j.T().UnixNano() / 1000) / 1000), nil
+}
+
+func (j CustomTime) Value() (driver.Value, error) {
+	t := time.Unix(0, j.T().UnixNano()/int64(time.Millisecond)*int64(time.Millisecond)) // round to millisecond precision
+	return t, nil
+}
+
+func (j CustomTime) String() string {
+	t := time.Time(j)
+	return t.Format("2006-01-02 15:04:05.000")
+}
+
+func (j CustomTime) T() time.Time {
+	return time.Time(j)
+}
+
+func (j CustomTime) Valid() bool {
+	return j.T().Unix() >= 0
+}

models/summary.go

@@ -1,37 +1,247 @@
 package models
 
 import (
+	"sort"
 	"time"
 )
 
 const (
-	NSummaryTypes   uint8 = 4
+	NSummaryTypes   uint8 = 99
 	SummaryProject  uint8 = 0
 	SummaryLanguage uint8 = 1
 	SummaryEditor   uint8 = 2
 	SummaryOS       uint8 = 3
+	SummaryMachine  uint8 = 4
 )
 
+const UnknownSummaryKey = "unknown"
+
 type Summary struct {
-	ID               uint           `json:"-" gorm:"primary_key"`
-	UserID           string         `json:"user_id" gorm:"not null; index:idx_time_summary_user"`
-	FromTime         time.Time      `json:"from" gorm:"not null; type:timestamp; default:now(); index:idx_time_summary_user"`
-	ToTime           time.Time      `json:"to" gorm:"not null; type:timestamp; default:now(); index:idx_time_summary_user"`
-	Projects         []*SummaryItem `json:"projects"`
-	Languages        []*SummaryItem `json:"languages"`
-	Editors          []*SummaryItem `json:"editors"`
-	OperatingSystems []*SummaryItem `json:"operating_systems"`
+	ID               uint         `json:"-" gorm:"primary_key"`
+	User             *User        `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	UserID           string       `json:"user_id" gorm:"not null; index:idx_time_summary_user"`
+	FromTime         CustomTime   `json:"from" gorm:"not null; type:timestamp; default:CURRENT_TIMESTAMP; index:idx_time_summary_user" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
+	ToTime           CustomTime   `json:"to" gorm:"not null; type:timestamp; default:CURRENT_TIMESTAMP; index:idx_time_summary_user" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
+	Projects         SummaryItems `json:"projects" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	Languages        SummaryItems `json:"languages" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	Editors          SummaryItems `json:"editors" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	OperatingSystems SummaryItems `json:"operating_systems" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	Machines         SummaryItems `json:"machines" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
 }
 
+type SummaryItems []*SummaryItem
+
 type SummaryItem struct {
 	ID        uint          `json:"-" gorm:"primary_key"`
+	Summary   *Summary      `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
 	SummaryID uint          `json:"-"`
-	Type      uint8         `json:"-"`
+	Type      uint8         `json:"-" gorm:"index:idx_type"`
 	Key       string        `json:"key"`
-	Total     time.Duration `json:"total"`
+	Total     time.Duration `json:"total" swaggertype:"primitive,integer"`
 }
 
 type SummaryItemContainer struct {
 	Type  uint8
 	Items []*SummaryItem
 }
+
+type SummaryViewModel struct {
+	*Summary
+	User           *User
+	LanguageColors map[string]string
+	EditorColors   map[string]string
+	OSColors       map[string]string
+	Error          string
+	Success        string
+	ApiKey         string
+	RawQuery       string
+}
+
+type SummaryParams struct {
+	From      time.Time
+	To        time.Time
+	User      *User
+	Recompute bool
+}
+
+type AliasResolver func(t uint8, k string) string
+
+func SummaryTypes() []uint8 {
+	return []uint8{SummaryProject, SummaryLanguage, SummaryEditor, SummaryOS, SummaryMachine}
+}
+
+func (s *Summary) Sorted() *Summary {
+	sort.Sort(sort.Reverse(s.Projects))
+	sort.Sort(sort.Reverse(s.Machines))
+	sort.Sort(sort.Reverse(s.OperatingSystems))
+	sort.Sort(sort.Reverse(s.Languages))
+	sort.Sort(sort.Reverse(s.Editors))
+	return s
+}
+
+func (s *Summary) Types() []uint8 {
+	return SummaryTypes()
+}
+
+func (s *Summary) MappedItems() map[uint8]*SummaryItems {
+	return map[uint8]*SummaryItems{
+		SummaryProject:  &s.Projects,
+		SummaryLanguage: &s.Languages,
+		SummaryEditor:   &s.Editors,
+		SummaryOS:       &s.OperatingSystems,
+		SummaryMachine:  &s.Machines,
+	}
+}
+
+func (s *Summary) ItemsByType(summaryType uint8) *SummaryItems {
+	return s.MappedItems()[summaryType]
+}
+
+/* Augments the summary in a way that at least one item is present for every type.
+If a summary has zero items for a given type, but one or more for any of the other types,
+the total summary duration can be derived from those and inserted as a dummy-item with key "unknown"
+for the missing type.
+For instance, the machine type was introduced post hoc. Accordingly, no "machine"-information is present in
+the data for old heartbeats and summaries. If a user has two years of data without machine information and
+one day with such, a "machine"-chart plotted from that data will reference a way smaller absolute total amount
+of time than the other ones.
+To avoid having to modify persisted data retrospectively, i.e. inserting a dummy SummaryItem for the new type,
+such is generated dynamically here, considering the "machine" for all old heartbeats "unknown".
+*/
+func (s *Summary) FillUnknown() {
+	types := s.Types()
+	typeItems := s.MappedItems()
+	missingTypes := make([]uint8, 0)
+
+	for _, t := range types {
+		if len(*typeItems[t]) == 0 {
+			missingTypes = append(missingTypes, t)
+		}
+	}
+
+	// can't proceed if entire summary is empty
+	if len(missingTypes) == len(types) {
+		return
+	}
+
+	timeSum := s.TotalTime()
+
+	// construct dummy item for all missing types
+	for _, t := range missingTypes {
+		*typeItems[t] = append(*typeItems[t], &SummaryItem{
+			Type:  t,
+			Key:   UnknownSummaryKey,
+			Total: timeSum,
+		})
+	}
+}
+
+func (s *Summary) TotalTime() time.Duration {
+	var timeSum time.Duration
+
+	mappedItems := s.MappedItems()
+	// calculate total duration from any of the present sets of items
+	for _, t := range s.Types() {
+		if items := mappedItems[t]; len(*items) > 0 {
+			for _, item := range *items {
+				timeSum += item.Total
+			}
+			break
+		}
+	}
+
+	return timeSum * time.Second
+}
+
+func (s *Summary) TotalTimeBy(entityType uint8) (timeSum time.Duration) {
+	mappedItems := s.MappedItems()
+	if items := mappedItems[entityType]; len(*items) > 0 {
+		for _, item := range *items {
+			timeSum = timeSum + item.Total*time.Second
+		}
+	}
+	return timeSum
+}
+
+func (s *Summary) TotalTimeByKey(entityType uint8, key string) (timeSum time.Duration) {
+	mappedItems := s.MappedItems()
+	if items := mappedItems[entityType]; len(*items) > 0 {
+		for _, item := range *items {
+			if item.Key != key {
+				continue
+			}
+			timeSum = timeSum + item.Total*time.Second
+		}
+	}
+	return timeSum
+}
+
+func (s *Summary) TotalTimeByFilters(filters *Filters) time.Duration {
+	do, typeId, key := filters.One()
+	if do {
+		return s.TotalTimeByKey(typeId, key)
+	}
+	return 0
+}
+
+func (s *Summary) WithResolvedAliases(resolve AliasResolver) *Summary {
+	processAliases := func(origin []*SummaryItem) []*SummaryItem {
+		target := make([]*SummaryItem, 0)
+
+		findItem := func(key string) *SummaryItem {
+			for _, item := range target {
+				if item.Key == key {
+					return item
+				}
+			}
+			return nil
+		}
+
+		for _, item := range origin {
+			// Add all "top-level" items, i.e. such without aliases
+			if key := resolve(item.Type, item.Key); key == item.Key {
+				target = append(target, item)
+			}
+		}
+
+		for _, item := range origin {
+			// Add all remaining projects and merge with their alias
+			if key := resolve(item.Type, item.Key); key != item.Key {
+				if targetItem := findItem(key); targetItem != nil {
+					targetItem.Total += item.Total
+				} else {
+					target = append(target, &SummaryItem{
+						ID:        item.ID,
+						SummaryID: item.SummaryID,
+						Type:      item.Type,
+						Key:       key,
+						Total:     item.Total,
+					})
+				}
+			}
+		}
+
+		return target
+	}
+
+	// Resolve aliases
+	s.Projects = processAliases(s.Projects)
+	s.Editors = processAliases(s.Editors)
+	s.Languages = processAliases(s.Languages)
+	s.OperatingSystems = processAliases(s.OperatingSystems)
+	s.Machines = processAliases(s.Machines)
+
+	return s
+}
+
+func (s SummaryItems) Len() int {
+	return len(s)
+}
+
+func (s SummaryItems) Less(i, j int) bool {
+	return s[i].Total < s[j].Total
+}
+
+func (s SummaryItems) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}

models/summary_test.go

@@ -0,0 +1,202 @@
+package models
+
+import (
+	"github.com/stretchr/testify/assert"
+	"testing"
+	"time"
+)
+
+func TestSummary_FillUnknown(t *testing.T) {
+	testDuration := 10 * time.Minute
+
+	sut := &Summary{
+		Projects: []*SummaryItem{
+			{
+				Type: SummaryProject,
+				Key:  "wakapi",
+				// hack to work around the issue that the total time of a summary item is mistakenly represented in seconds
+				Total: testDuration / time.Second,
+			},
+		},
+	}
+
+	sut.FillUnknown()
+
+	itemLists := [][]*SummaryItem{
+		sut.Machines,
+		sut.OperatingSystems,
+		sut.Languages,
+		sut.Editors,
+	}
+	for _, l := range itemLists {
+		assert.Len(t, l, 1)
+		assert.Equal(t, UnknownSummaryKey, l[0].Key)
+		assert.Equal(t, testDuration, l[0].Total)
+	}
+}
+
+func TestSummary_TotalTimeBy(t *testing.T) {
+	testDuration1, testDuration2, testDuration3 := 10*time.Minute, 5*time.Minute, 20*time.Minute
+
+	sut := &Summary{
+		Projects: []*SummaryItem{
+			{
+				Type: SummaryProject,
+				Key:  "wakapi",
+				// hack to work around the issue that the total time of a summary item is mistakenly represented in seconds
+				Total: testDuration1 / time.Second,
+			},
+			{
+				Type:  SummaryProject,
+				Key:   "anchr",
+				Total: testDuration2 / time.Second,
+			},
+		},
+		Languages: []*SummaryItem{
+			{
+				Type:  SummaryLanguage,
+				Key:   "Go",
+				Total: testDuration3 / time.Second,
+			},
+		},
+	}
+
+	assert.Equal(t, testDuration1+testDuration2, sut.TotalTimeBy(SummaryProject))
+	assert.Equal(t, testDuration3, sut.TotalTimeBy(SummaryLanguage))
+	assert.Zero(t, sut.TotalTimeBy(SummaryEditor))
+	assert.Zero(t, sut.TotalTimeBy(SummaryMachine))
+	assert.Zero(t, sut.TotalTimeBy(SummaryOS))
+}
+
+func TestSummary_TotalTimeByFilters(t *testing.T) {
+	testDuration1, testDuration2, testDuration3 := 10*time.Minute, 5*time.Minute, 20*time.Minute
+
+	sut := &Summary{
+		Projects: []*SummaryItem{
+			{
+				Type: SummaryProject,
+				Key:  "wakapi",
+				// hack to work around the issue that the total time of a summary item is mistakenly represented in seconds
+				Total: testDuration1 / time.Second,
+			},
+			{
+				Type:  SummaryProject,
+				Key:   "anchr",
+				Total: testDuration2 / time.Second,
+			},
+		},
+		Languages: []*SummaryItem{
+			{
+				Type:  SummaryLanguage,
+				Key:   "Go",
+				Total: testDuration3 / time.Second,
+			},
+		},
+	}
+
+	// Specifying filters about multiple entites is not supported at the moment
+	// as the current, very rudimentary, time calculation logic wouldn't make sense then.
+	// Evaluating a filter like (project="wakapi", language="go") can only be realized
+	// before computing the summary in the first place, because afterwards we can't know
+	// what time coded in "Go" was in the "Wakapi" project
+	// See https://github.com/muety/wakapi/issues/108
+
+	filters1 := &Filters{Project: "wakapi"}
+	filters2 := &Filters{Language: "Go"}
+	filters3 := &Filters{}
+
+	assert.Equal(t, testDuration1, sut.TotalTimeByFilters(filters1))
+	assert.Equal(t, testDuration3, sut.TotalTimeByFilters(filters2))
+	assert.Zero(t, sut.TotalTimeByFilters(filters3))
+}
+
+func TestSummary_WithResolvedAliases(t *testing.T) {
+	testDuration1, testDuration2, testDuration3, testDuration4 := 10*time.Minute, 5*time.Minute, 1*time.Minute, 20*time.Minute
+
+	var resolver AliasResolver = func(t uint8, k string) string {
+		switch t {
+		case SummaryProject:
+			switch k {
+			case "wakapi-mobile":
+				return "wakapi"
+			}
+		case SummaryLanguage:
+			switch k {
+			case "Java 8":
+				return "Java"
+			}
+		}
+		return k
+	}
+
+	sut := &Summary{
+		Projects: []*SummaryItem{
+			{
+				Type:  SummaryProject,
+				Key:   "wakapi",
+				Total: testDuration1 / time.Second,
+			},
+			{
+				Type:  SummaryProject,
+				Key:   "wakapi-mobile",
+				Total: testDuration2 / time.Second,
+			},
+			{
+				Type:  SummaryProject,
+				Key:   "anchr",
+				Total: testDuration3 / time.Second,
+			},
+		},
+		Languages: []*SummaryItem{
+			{
+				Type:  SummaryLanguage,
+				Key:   "Java 8",
+				Total: testDuration4 / time.Second,
+			},
+		},
+	}
+
+	sut = sut.WithResolvedAliases(resolver)
+
+	assert.Equal(t, testDuration1+testDuration2, sut.TotalTimeByKey(SummaryProject, "wakapi"))
+	assert.Zero(t, sut.TotalTimeByKey(SummaryProject, "wakapi-mobile"))
+	assert.Equal(t, testDuration3, sut.TotalTimeByKey(SummaryProject, "anchr"))
+	assert.Equal(t, testDuration4, sut.TotalTimeByKey(SummaryLanguage, "Java"))
+	assert.Zero(t, sut.TotalTimeByKey(SummaryLanguage, "wakapi"))
+	assert.Zero(t, sut.TotalTimeByKey(SummaryProject, "Java 8"))
+	assert.Len(t, sut.Projects, 2)
+	assert.Len(t, sut.Languages, 1)
+	assert.Empty(t, sut.Editors)
+	assert.Empty(t, sut.OperatingSystems)
+	assert.Empty(t, sut.Machines)
+}
+
+func TestSummaryItems_Sorted(t *testing.T) {
+	testDuration1, testDuration2, testDuration3 := 10*time.Minute, 5*time.Minute, 20*time.Minute
+
+	sut := &Summary{
+		Projects: []*SummaryItem{
+			{
+				Type:  SummaryProject,
+				Key:   "wakapi",
+				Total: testDuration1,
+			},
+			{
+				Type:  SummaryProject,
+				Key:   "anchr",
+				Total: testDuration2,
+			},
+			{
+				Type:  SummaryProject,
+				Key:   "anchr-mobile",
+				Total: testDuration3,
+			},
+		},
+	}
+
+	sut = sut.Sorted()
+
+	assert.Equal(t, testDuration3, sut.Projects[0].Total)
+	assert.Equal(t, testDuration1, sut.Projects[1].Total)
+	assert.Equal(t, testDuration2, sut.Projects[2].Total)
+}

models/user.go

@@ -1,12 +1,101 @@
 package models
 
-const (
-	DefaultUser     string = "admin"
-	DefaultPassword string = "admin"
-)
+import "regexp"
+
+func init() {
+	mailRegex = regexp.MustCompile(MailPattern)
+}
 
 type User struct {
-	ID       string `json:"id" gorm:"primary_key"`
-	ApiKey   string `json:"api_key" gorm:"unique"`
-	Password string `json:"-"`
+	ID               string     `json:"id" gorm:"primary_key"`
+	ApiKey           string     `json:"api_key" gorm:"unique"`
+	Email            string     `json:"email" gorm:"uniqueIndex:idx_user_email"`
+	Password         string     `json:"-"`
+	CreatedAt        CustomTime `gorm:"type:timestamp; default:CURRENT_TIMESTAMP" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
+	LastLoggedInAt   CustomTime `gorm:"type:timestamp; default:CURRENT_TIMESTAMP" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
+	ShareDataMaxDays int        `json:"-" gorm:"default:0"`
+	ShareEditors     bool       `json:"-" gorm:"default:false; type:bool"`
+	ShareLanguages   bool       `json:"-" gorm:"default:false; type:bool"`
+	ShareProjects    bool       `json:"-" gorm:"default:false; type:bool"`
+	ShareOSs         bool       `json:"-" gorm:"default:false; type:bool; column:share_oss"`
+	ShareMachines    bool       `json:"-" gorm:"default:false; type:bool"`
+	IsAdmin          bool       `json:"-" gorm:"default:false; type:bool"`
+	HasData          bool       `json:"-" gorm:"default:false; type:bool"`
+	WakatimeApiKey   string     `json:"-"`
+	ResetToken       string     `json:"-"`
+}
+
+type Login struct {
+	Username string `schema:"username"`
+	Password string `schema:"password"`
+}
+
+type Signup struct {
+	Username       string `schema:"username"`
+	Email          string `schema:"email"`
+	Password       string `schema:"password"`
+	PasswordRepeat string `schema:"password_repeat"`
+}
+
+type SetPasswordRequest struct {
+	Password       string `schema:"password"`
+	PasswordRepeat string `schema:"password_repeat"`
+	Token          string `schema:"token"`
+}
+
+type ResetPasswordRequest struct {
+	Email string `schema:"email"`
+}
+
+type CredentialsReset struct {
+	PasswordOld    string `schema:"password_old"`
+	PasswordNew    string `schema:"password_new"`
+	PasswordRepeat string `schema:"password_repeat"`
+}
+
+type UserDataUpdate struct {
+	Email string `schema:"email"`
+}
+
+type TimeByUser struct {
+	User string
+	Time CustomTime
+}
+
+type CountByUser struct {
+	User  string
+	Count int64
+}
+
+func (c *CredentialsReset) IsValid() bool {
+	return ValidatePassword(c.PasswordNew) &&
+		c.PasswordNew == c.PasswordRepeat
+}
+
+func (c *SetPasswordRequest) IsValid() bool {
+	return ValidatePassword(c.Password) &&
+		c.Password == c.PasswordRepeat
+}
+
+func (s *Signup) IsValid() bool {
+	return ValidateUsername(s.Username) &&
+		ValidateEmail(s.Email) &&
+		ValidatePassword(s.Password) &&
+		s.Password == s.PasswordRepeat
+}
+
+func (r *UserDataUpdate) IsValid() bool {
+	return ValidateEmail(r.Email)
+}
+
+func ValidateUsername(username string) bool {
+	return len(username) >= 1 && username != "current"
+}
+
+func ValidatePassword(password string) bool {
+	return len(password) >= 6
+}
+
+func ValidateEmail(email string) bool {
+	return email == "" || mailRegex.Match([]byte(email))
 }

models/view/home.go

@@ -0,0 +1,18 @@
+package view
+
+type HomeViewModel struct {
+	Success    string
+	Error      string
+	TotalHours int
+	TotalUsers int
+}
+
+func (s *HomeViewModel) WithSuccess(m string) *HomeViewModel {
+	s.Success = m
+	return s
+}
+
+func (s *HomeViewModel) WithError(m string) *HomeViewModel {
+	s.Error = m
+	return s
+}

models/view/imprint.go

@@ -0,0 +1,22 @@
+package view
+
+type ImprintViewModel struct {
+	HtmlText string
+	Success  string
+	Error    string
+}
+
+func (s *ImprintViewModel) WithSuccess(m string) *ImprintViewModel {
+	s.Success = m
+	return s
+}
+
+func (s *ImprintViewModel) WithError(m string) *ImprintViewModel {
+	s.Error = m
+	return s
+}
+
+func (s *ImprintViewModel) WithHtmlText(t string) *ImprintViewModel {
+	s.HtmlText = t
+	return s
+}

models/view/login.go

@@ -0,0 +1,22 @@
+package view
+
+type LoginViewModel struct {
+	Success    string
+	Error      string
+	TotalUsers int
+}
+
+type SetPasswordViewModel struct {
+	LoginViewModel
+	Token string
+}
+
+func (s *LoginViewModel) WithSuccess(m string) *LoginViewModel {
+	s.Success = m
+	return s
+}
+
+func (s *LoginViewModel) WithError(m string) *LoginViewModel {
+	s.Error = m
+	return s
+}

models/view/settings.go

@@ -0,0 +1,27 @@
+package view
+
+import "github.com/muety/wakapi/models"
+
+type SettingsViewModel struct {
+	User             *models.User
+	LanguageMappings []*models.LanguageMapping
+	Aliases          []*SettingsVMCombinedAlias
+	Success          string
+	Error            string
+}
+
+type SettingsVMCombinedAlias struct {
+	Key    string
+	Type   uint8
+	Values []string
+}
+
+func (s *SettingsViewModel) WithSuccess(m string) *SettingsViewModel {
+	s.Success = m
+	return s
+}
+
+func (s *SettingsViewModel) WithError(m string) *SettingsViewModel {
+	s.Error = m
+	return s
+}

models/view/summary.go

@@ -0,0 +1,16 @@
+package view
+
+type SummaryViewModel struct {
+	Success string
+	Error   string
+}
+
+func (s *SummaryViewModel) WithSuccess(m string) *SummaryViewModel {
+	s.Success = m
+	return s
+}
+
+func (s *SummaryViewModel) WithError(m string) *SummaryViewModel {
+	s.Error = m
+	return s
+}

postman/Wakapi.postman_collection.json

@@ -0,0 +1,346 @@
+{
+	"info": {
+		"_postman_id": "3dcc346d-a9a8-4699-8a52-459eb978b382",
+		"name": "Wakapi",
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
+	},
+	"item": [
+		{
+			"name": "Misc",
+			"item": [
+				{
+					"name": "Get health",
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "{{BASE_URL}}/api/health",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"health"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Get metrics",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/metrics",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"metrics"
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		},
+		{
+			"name": "Heartbeats",
+			"item": [
+				{
+					"name": "Create heartbeat",
+					"request": {
+						"method": "POST",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							},
+							{
+								"key": "X-Machine-Name",
+								"value": "devmachine",
+								"type": "text"
+							},
+							{
+								"key": "User-Agent",
+								"value": "wakatime/13.0.7 (Linux-4.15.0-91-generic-x86_64-with-glibc2.4) Python3.8.0.final.0 generator/1.42.1 generator-wakatime/4.0.0",
+								"type": "text"
+							}
+						],
+						"body": {
+							"mode": "raw",
+							"raw": "[{\n    \"entity\": \"/home/user1/dev/proejct1/main.go\",\n    \"project\": \"Project 1\",\n    \"language\": \"Go\",\n    \"is_write\": true,\n    \"type\": \"file\",\n    \"category\": null,\n    \"branch\": null,\n    \"time\": 1616680499.113417\n}]",
+							"options": {
+								"raw": {
+									"language": "json"
+								}
+							}
+						},
+						"url": {
+							"raw": "{{BASE_URL}}/api/heartbeat",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"heartbeat"
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		},
+		{
+			"name": "Summary",
+			"item": [
+				{
+					"name": "Get summary",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/summary?interval=last_7_days",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"summary"
+							],
+							"query": [
+								{
+									"key": "interval",
+									"value": "last_7_days"
+								}
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		},
+		{
+			"name": "Shields",
+			"item": [
+				{
+					"name": "Get Shields data",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/compat/shields/v1/n1try/interval:today/language:Go",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"compat",
+								"shields",
+								"v1",
+								"n1try",
+								"interval:today",
+								"language:Go"
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		},
+		{
+			"name": "WakaTime",
+			"item": [
+				{
+					"name": "Get all time",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/compat/wakatime/v1/users/current/all_time_since_today",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"compat",
+								"wakatime",
+								"v1",
+								"users",
+								"current",
+								"all_time_since_today"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Get stats",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/compat/wakatime/v1/users/current/stats",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"compat",
+								"wakatime",
+								"v1",
+								"users",
+								"current",
+								"stats"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Get stats with range",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/compat/wakatime/v1/users/current/stats/last_7_days",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"compat",
+								"wakatime",
+								"v1",
+								"users",
+								"current",
+								"stats",
+								"last_7_days"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Get summaries",
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Authorization",
+								"value": "Basic {{TOKEN}}",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{BASE_URL}}/api/compat/wakatime/v1/users/current/summaries?start=2020-03-01T15:04:05Z&end=2020-03-31T15:04:05Z",
+							"host": [
+								"{{BASE_URL}}"
+							],
+							"path": [
+								"api",
+								"compat",
+								"wakatime",
+								"v1",
+								"users",
+								"current",
+								"summaries"
+							],
+							"query": [
+								{
+									"key": "start",
+									"value": "2020-03-01T15:04:05Z"
+								},
+								{
+									"key": "end",
+									"value": "2020-03-31T15:04:05Z"
+								}
+							]
+						}
+					},
+					"response": []
+				}
+			]
+		}
+	],
+	"event": [
+		{
+			"listen": "prerequest",
+			"script": {
+				"type": "text/javascript",
+				"exec": [
+					"const apiKey = pm.variables.get('API_KEY')",
+					"",
+					"if (!apiKey) {",
+					"    throw new Error('no api key given')",
+					"}",
+					"",
+					"const token = base64encode(apiKey)",
+					"pm.variables.set('TOKEN', token)",
+					"",
+					"function base64encode(str) {",
+					"    return Buffer.from(str, 'utf-8').toString('base64')",
+					"}"
+				]
+			}
+		},
+		{
+			"listen": "test",
+			"script": {
+				"type": "text/javascript",
+				"exec": [
+					""
+				]
+			}
+		}
+	],
+	"variable": [
+		{
+			"key": "BASE_URL",
+			"value": "http://localhost:3000"
+		},
+		{
+			"key": "API_KEY",
+			"value": ""
+		}
+	]
+}

repositories/alias.go

@@ -0,0 +1,89 @@
+package repositories
+
+import (
+	"errors"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+type AliasRepository struct {
+	db *gorm.DB
+}
+
+func NewAliasRepository(db *gorm.DB) *AliasRepository {
+	return &AliasRepository{db: db}
+}
+
+func (r *AliasRepository) GetByUser(userId string) ([]*models.Alias, error) {
+	var aliases []*models.Alias
+	if err := r.db.
+		Where(&models.Alias{UserID: userId}).
+		Find(&aliases).Error; err != nil {
+		return nil, err
+	}
+	return aliases, nil
+}
+
+func (r *AliasRepository) GetByUserAndKey(userId, key string) ([]*models.Alias, error) {
+	var aliases []*models.Alias
+	if err := r.db.
+		Where(&models.Alias{
+			UserID: userId,
+			Key:    key,
+		}).
+		Find(&aliases).Error; err != nil {
+		return nil, err
+	}
+	return aliases, nil
+}
+
+func (r *AliasRepository) GetByUserAndKeyAndType(userId, key string, summaryType uint8) ([]*models.Alias, error) {
+	var aliases []*models.Alias
+	if err := r.db.
+		Where(&models.Alias{
+			UserID: userId,
+			Key:    key,
+			Type:   summaryType,
+		}).
+		Find(&aliases).Error; err != nil {
+		return nil, err
+	}
+	return aliases, nil
+}
+
+func (r *AliasRepository) GetByUserAndTypeAndValue(userId string, summaryType uint8, value string) (*models.Alias, error) {
+	alias := &models.Alias{}
+	if err := r.db.
+		Where(&models.Alias{
+			UserID: userId,
+			Type:   summaryType,
+			Value:  value,
+		}).
+		First(alias).Error; err != nil {
+		return nil, err
+	}
+	return alias, nil
+}
+
+func (r *AliasRepository) Insert(alias *models.Alias) (*models.Alias, error) {
+	if !alias.IsValid() {
+		return nil, errors.New("invalid alias")
+	}
+	result := r.db.Create(alias)
+	if err := result.Error; err != nil {
+		return nil, err
+	}
+	return alias, nil
+}
+
+func (r *AliasRepository) Delete(id uint) error {
+	return r.db.
+		Where("id = ?", id).
+		Delete(models.Alias{}).Error
+}
+
+func (r *AliasRepository) DeleteBatch(ids []uint) error {
+	return r.db.
+		Where("id IN ?", ids).
+		Delete(models.Alias{}).Error
+}

repositories/heartbeart.go

@@ -0,0 +1,125 @@
+package repositories
+
+import (
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+	"time"
+)
+
+type HeartbeatRepository struct {
+	db *gorm.DB
+}
+
+func NewHeartbeatRepository(db *gorm.DB) *HeartbeatRepository {
+	return &HeartbeatRepository{db: db}
+}
+
+func (r *HeartbeatRepository) InsertBatch(heartbeats []*models.Heartbeat) error {
+	if err := r.db.
+		Clauses(clause.OnConflict{
+			DoNothing: true,
+		}).
+		Create(&heartbeats).Error; err != nil {
+		return err
+	}
+	return nil
+}
+
+func (r *HeartbeatRepository) GetLatestByOriginAndUser(origin string, user *models.User) (*models.Heartbeat, error) {
+	var heartbeat models.Heartbeat
+	if err := r.db.
+		Model(&models.Heartbeat{}).
+		Where(&models.Heartbeat{
+			UserID: user.ID,
+			Origin: origin,
+		}).
+		Order("time desc").
+		First(&heartbeat).Error; err != nil {
+		return nil, err
+	}
+	return &heartbeat, nil
+}
+
+func (r *HeartbeatRepository) GetAllWithin(from, to time.Time, user *models.User) ([]*models.Heartbeat, error) {
+	var heartbeats []*models.Heartbeat
+	if err := r.db.
+		Where(&models.Heartbeat{UserID: user.ID}).
+		Where("time >= ?", from).
+		Where("time < ?", to).
+		Order("time asc").
+		Find(&heartbeats).Error; err != nil {
+		return nil, err
+	}
+	return heartbeats, nil
+}
+
+func (r *HeartbeatRepository) GetFirstByUsers() ([]*models.TimeByUser, error) {
+	var result []*models.TimeByUser
+	r.db.Model(&models.User{}).
+		Select("users.id as user, min(time) as time").
+		Joins("left join heartbeats on users.id = heartbeats.user_id").
+		Group("user").
+		Scan(&result)
+	return result, nil
+}
+
+func (r *HeartbeatRepository) GetLastByUsers() ([]*models.TimeByUser, error) {
+	var result []*models.TimeByUser
+	r.db.Model(&models.User{}).
+		Select("users.id as user, max(time) as time").
+		Joins("left join heartbeats on users.id = heartbeats.user_id").
+		Group("user").
+		Scan(&result)
+	return result, nil
+}
+
+func (r *HeartbeatRepository) Count() (int64, error) {
+	var count int64
+	if err := r.db.
+		Model(&models.Heartbeat{}).
+		Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
+func (r *HeartbeatRepository) CountByUser(user *models.User) (int64, error) {
+	var count int64
+	if err := r.db.
+		Model(&models.Heartbeat{}).
+		Where(&models.Heartbeat{UserID: user.ID}).
+		Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
+func (r *HeartbeatRepository) CountByUsers(users []*models.User) ([]*models.CountByUser, error) {
+	var counts []*models.CountByUser
+
+	userIds := make([]string, len(users))
+	for i, u := range users {
+		userIds[i] = u.ID
+	}
+
+	if err := r.db.
+		Model(&models.User{}).
+		Select("users.id as user, count(heartbeats.id) as count").
+		Joins("left join heartbeats on users.id = heartbeats.user_id").
+		Where("user_id in ?", userIds).
+		Group("user").
+		Find(&counts).Error; err != nil {
+		return counts, err
+	}
+	return counts, nil
+}
+
+func (r *HeartbeatRepository) DeleteBefore(t time.Time) error {
+	if err := r.db.
+		Where("time <= ?", t).
+		Delete(models.Heartbeat{}).Error; err != nil {
+		return err
+	}
+	return nil
+}

repositories/key_value.go

@@ -0,0 +1,58 @@
+package repositories
+
+import (
+	"errors"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+type KeyValueRepository struct {
+	db *gorm.DB
+}
+
+func NewKeyValueRepository(db *gorm.DB) *KeyValueRepository {
+	return &KeyValueRepository{db: db}
+}
+
+func (r *KeyValueRepository) GetString(key string) (*models.KeyStringValue, error) {
+	kv := &models.KeyStringValue{}
+	if err := r.db.
+		Where(&models.KeyStringValue{Key: key}).
+		First(&kv).Error; err != nil {
+		return nil, err
+	}
+
+	return kv, nil
+}
+
+func (r *KeyValueRepository) PutString(kv *models.KeyStringValue) error {
+	result := r.db.
+		Clauses(clause.OnConflict{
+			UpdateAll: true,
+		}).
+		Where(&models.KeyStringValue{Key: kv.Key}).
+		Assign(kv).
+		Create(kv)
+
+	if err := result.Error; err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (r *KeyValueRepository) DeleteString(key string) error {
+	result := r.db.
+		Delete(&models.KeyStringValue{}, &models.KeyStringValue{Key: key})
+
+	if err := result.Error; err != nil {
+		return err
+	}
+
+	if result.RowsAffected != 1 {
+		return errors.New("nothing deleted")
+	}
+
+	return nil
+}

repositories/language_mapping.go

@@ -0,0 +1,52 @@
+package repositories
+
+import (
+	"errors"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+type LanguageMappingRepository struct {
+	config *config.Config
+	db     *gorm.DB
+}
+
+func NewLanguageMappingRepository(db *gorm.DB) *LanguageMappingRepository {
+	return &LanguageMappingRepository{config: config.Get(), db: db}
+}
+
+func (r *LanguageMappingRepository) GetById(id uint) (*models.LanguageMapping, error) {
+	mapping := &models.LanguageMapping{}
+	if err := r.db.Where(&models.LanguageMapping{ID: id}).First(mapping).Error; err != nil {
+		return mapping, err
+	}
+	return mapping, nil
+}
+
+func (r *LanguageMappingRepository) GetByUser(userId string) ([]*models.LanguageMapping, error) {
+	var mappings []*models.LanguageMapping
+	if err := r.db.
+		Where(&models.LanguageMapping{UserID: userId}).
+		Find(&mappings).Error; err != nil {
+		return mappings, err
+	}
+	return mappings, nil
+}
+
+func (r *LanguageMappingRepository) Insert(mapping *models.LanguageMapping) (*models.LanguageMapping, error) {
+	if !mapping.IsValid() {
+		return nil, errors.New("invalid mapping")
+	}
+	result := r.db.Create(mapping)
+	if err := result.Error; err != nil {
+		return nil, err
+	}
+	return mapping, nil
+}
+
+func (r *LanguageMappingRepository) Delete(id uint) error {
+	return r.db.
+		Where("id = ?", id).
+		Delete(models.LanguageMapping{}).Error
+}

repositories/repositories.go

@@ -0,0 +1,64 @@
+package repositories
+
+import (
+	"github.com/muety/wakapi/models"
+	"time"
+)
+
+type IAliasRepository interface {
+	Insert(*models.Alias) (*models.Alias, error)
+	Delete(uint) error
+	DeleteBatch([]uint) error
+	GetByUser(string) ([]*models.Alias, error)
+	GetByUserAndKey(string, string) ([]*models.Alias, error)
+	GetByUserAndKeyAndType(string, string, uint8) ([]*models.Alias, error)
+	GetByUserAndTypeAndValue(string, uint8, string) (*models.Alias, error)
+}
+
+type IHeartbeatRepository interface {
+	InsertBatch([]*models.Heartbeat) error
+	GetAllWithin(time.Time, time.Time, *models.User) ([]*models.Heartbeat, error)
+	GetFirstByUsers() ([]*models.TimeByUser, error)
+	GetLastByUsers() ([]*models.TimeByUser, error)
+	GetLatestByOriginAndUser(string, *models.User) (*models.Heartbeat, error)
+	Count() (int64, error)
+	CountByUser(*models.User) (int64, error)
+	CountByUsers([]*models.User) ([]*models.CountByUser, error)
+	DeleteBefore(time.Time) error
+}
+
+type IKeyValueRepository interface {
+	GetString(string) (*models.KeyStringValue, error)
+	PutString(*models.KeyStringValue) error
+	DeleteString(string) error
+}
+
+type ILanguageMappingRepository interface {
+	GetById(uint) (*models.LanguageMapping, error)
+	GetByUser(string) ([]*models.LanguageMapping, error)
+	Insert(*models.LanguageMapping) (*models.LanguageMapping, error)
+	Delete(uint) error
+}
+
+type ISummaryRepository interface {
+	Insert(*models.Summary) error
+	GetByUserWithin(*models.User, time.Time, time.Time) ([]*models.Summary, error)
+	GetLastByUser() ([]*models.TimeByUser, error)
+	DeleteByUser(string) error
+}
+
+type IUserRepository interface {
+	GetById(string) (*models.User, error)
+	GetByIds([]string) ([]*models.User, error)
+	GetByApiKey(string) (*models.User, error)
+	GetByEmail(string) (*models.User, error)
+	GetByResetToken(string) (*models.User, error)
+	GetAll() ([]*models.User, error)
+	GetByLoggedInAfter(time.Time) ([]*models.User, error)
+	GetByLastActiveAfter(time.Time) ([]*models.User, error)
+	Count() (int64, error)
+	InsertOrGet(*models.User) (*models.User, bool, error)
+	Update(*models.User) (*models.User, error)
+	UpdateField(*models.User, string, interface{}) (*models.User, error)
+	Delete(*models.User) error
+}

repositories/summary.go

@@ -0,0 +1,59 @@
+package repositories
+
+import (
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+	"time"
+)
+
+type SummaryRepository struct {
+	db *gorm.DB
+}
+
+func NewSummaryRepository(db *gorm.DB) *SummaryRepository {
+	return &SummaryRepository{db: db}
+}
+
+func (r *SummaryRepository) Insert(summary *models.Summary) error {
+	if err := r.db.Create(summary).Error; err != nil {
+		return err
+	}
+	return nil
+}
+
+func (r *SummaryRepository) GetByUserWithin(user *models.User, from, to time.Time) ([]*models.Summary, error) {
+	var summaries []*models.Summary
+	if err := r.db.
+		Where(&models.Summary{UserID: user.ID}).
+		Where("from_time >= ?", from).
+		Where("to_time <= ?", to).
+		Order("from_time asc").
+		Preload("Projects", "type = ?", models.SummaryProject).
+		Preload("Languages", "type = ?", models.SummaryLanguage).
+		Preload("Editors", "type = ?", models.SummaryEditor).
+		Preload("OperatingSystems", "type = ?", models.SummaryOS).
+		Preload("Machines", "type = ?", models.SummaryMachine).
+		Find(&summaries).Error; err != nil {
+		return nil, err
+	}
+	return summaries, nil
+}
+
+func (r *SummaryRepository) GetLastByUser() ([]*models.TimeByUser, error) {
+	var result []*models.TimeByUser
+	r.db.Model(&models.User{}).
+		Select("users.id as user, max(to_time) as time").
+		Joins("left join summaries on users.id = summaries.user_id").
+		Group("user").
+		Scan(&result)
+	return result, nil
+}
+
+func (r *SummaryRepository) DeleteByUser(userId string) error {
+	if err := r.db.
+		Where("user_id = ?", userId).
+		Delete(models.Summary{}).Error; err != nil {
+		return err
+	}
+	return nil
+}

repositories/user.go

@@ -0,0 +1,174 @@
+package repositories
+
+import (
+	"errors"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+	"time"
+)
+
+type UserRepository struct {
+	db *gorm.DB
+}
+
+func NewUserRepository(db *gorm.DB) *UserRepository {
+	return &UserRepository{db: db}
+}
+
+func (r *UserRepository) GetById(userId string) (*models.User, error) {
+	u := &models.User{}
+	if err := r.db.Where(&models.User{ID: userId}).First(u).Error; err != nil {
+		return u, err
+	}
+	return u, nil
+}
+
+func (r *UserRepository) GetByIds(userIds []string) ([]*models.User, error) {
+	var users []*models.User
+	if err := r.db.
+		Model(&models.User{}).
+		Where("id in ?", userIds).
+		Find(&users).Error; err != nil {
+		return nil, err
+	}
+	return users, nil
+}
+
+func (r *UserRepository) GetByApiKey(key string) (*models.User, error) {
+	u := &models.User{}
+	if err := r.db.Where(&models.User{ApiKey: key}).First(u).Error; err != nil {
+		return u, err
+	}
+	return u, nil
+}
+
+func (r *UserRepository) GetByResetToken(resetToken string) (*models.User, error) {
+	if resetToken == "" {
+		return nil, errors.New("invalid input")
+	}
+	u := &models.User{}
+	if err := r.db.Where(&models.User{ResetToken: resetToken}).First(u).Error; err != nil {
+		return u, err
+	}
+	return u, nil
+}
+
+func (r *UserRepository) GetByEmail(email string) (*models.User, error) {
+	if email == "" {
+		return nil, errors.New("invalid input")
+	}
+	u := &models.User{}
+	if err := r.db.Where(&models.User{Email: email}).First(u).Error; err != nil {
+		return u, err
+	}
+	return u, nil
+}
+
+func (r *UserRepository) GetAll() ([]*models.User, error) {
+	var users []*models.User
+	if err := r.db.
+		Where(&models.User{}).
+		Find(&users).Error; err != nil {
+		return nil, err
+	}
+	return users, nil
+}
+
+func (r *UserRepository) GetByLoggedInAfter(t time.Time) ([]*models.User, error) {
+	var users []*models.User
+	if err := r.db.
+		Where("last_logged_in_at >= ?", t).
+		Find(&users).Error; err != nil {
+		return nil, err
+	}
+	return users, nil
+}
+
+// Returns a list of user ids, whose last heartbeat is not older than t
+// NOTE: Only ID field will be populated
+func (r *UserRepository) GetByLastActiveAfter(t time.Time) ([]*models.User, error) {
+	subQuery1 := r.db.Model(&models.User{}).
+		Select("users.id as user, max(time) as time").
+		Joins("left join heartbeats on users.id = heartbeats.user_id").
+		Group("user")
+
+	var userIds []string
+	if err := r.db.
+		Select("user as id").
+		Table("(?) as q", subQuery1).
+		Where("time >= ?", t).
+		Scan(&userIds).Error; err != nil {
+		return nil, err
+	}
+
+	return r.GetByIds(userIds)
+}
+
+func (r *UserRepository) Count() (int64, error) {
+	var count int64
+	if err := r.db.
+		Model(&models.User{}).
+		Count(&count).Error; err != nil {
+		return 0, err
+	}
+	return count, nil
+}
+
+func (r *UserRepository) InsertOrGet(user *models.User) (*models.User, bool, error) {
+	result := r.db.FirstOrCreate(user, &models.User{ID: user.ID})
+	if err := result.Error; err != nil {
+		return nil, false, err
+	}
+
+	if result.RowsAffected == 1 {
+		return user, true, nil
+	}
+
+	return user, false, nil
+}
+
+func (r *UserRepository) Update(user *models.User) (*models.User, error) {
+	updateMap := map[string]interface{}{
+		"api_key":             user.ApiKey,
+		"password":            user.Password,
+		"email":               user.Email,
+		"last_logged_in_at":   user.LastLoggedInAt,
+		"share_data_max_days": user.ShareDataMaxDays,
+		"share_editors":       user.ShareEditors,
+		"share_languages":     user.ShareLanguages,
+		"share_oss":           user.ShareOSs,
+		"share_projects":      user.ShareProjects,
+		"share_machines":      user.ShareMachines,
+		"wakatime_api_key":    user.WakatimeApiKey,
+		"has_data":            user.HasData,
+		"reset_token":         user.ResetToken,
+	}
+
+	result := r.db.Model(user).Updates(updateMap)
+	if err := result.Error; err != nil {
+		return nil, err
+	}
+
+	if result.RowsAffected != 1 {
+		return nil, errors.New("nothing updated")
+	}
+
+	return user, nil
+}
+
+func (r *UserRepository) UpdateField(user *models.User, key string, value interface{}) (*models.User, error) {
+	result := r.db.Model(user).Update(key, value)
+	if err := result.Error; err != nil {
+		return nil, err
+	}
+
+	if result.RowsAffected != 1 {
+		return nil, errors.New("nothing updated")
+	}
+
+	return user, nil
+}
+
+func (r *UserRepository) Delete(user *models.User) error {
+	return r.db.Delete(user).Error
+}

routes/api/health.go

@@ -0,0 +1,39 @@
+package api
+
+import (
+	"fmt"
+	"github.com/gorilla/mux"
+	"gorm.io/gorm"
+	"net/http"
+)
+
+type HealthApiHandler struct {
+	db *gorm.DB
+}
+
+func NewHealthApiHandler(db *gorm.DB) *HealthApiHandler {
+	return &HealthApiHandler{db: db}
+}
+
+func (h *HealthApiHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("/health").Subrouter()
+	r.Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+// @Summary Check the application's health status
+// @ID get-health
+// @Tags misc
+// @Produce plain
+// @Success 200 {string} string
+// @Router /health [get]
+func (h *HealthApiHandler) Get(w http.ResponseWriter, r *http.Request) {
+	var dbStatus int
+	if sqlDb, err := h.db.DB(); err == nil {
+		if err := sqlDb.Ping(); err == nil {
+			dbStatus = 1
+		}
+	}
+
+	w.Header().Set("Content-Type", "text/plain")
+	w.Write([]byte(fmt.Sprintf("app=1\ndb=%d", dbStatus)))
+}

routes/api/heartbeat.go

@@ -0,0 +1,119 @@
+package api
+
+import (
+	"encoding/json"
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	customMiddleware "github.com/muety/wakapi/middlewares/custom"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+
+	"github.com/muety/wakapi/models"
+)
+
+type HeartbeatApiHandler struct {
+	config              *conf.Config
+	userSrvc            services.IUserService
+	heartbeatSrvc       services.IHeartbeatService
+	languageMappingSrvc services.ILanguageMappingService
+}
+
+func NewHeartbeatApiHandler(userService services.IUserService, heartbeatService services.IHeartbeatService, languageMappingService services.ILanguageMappingService) *HeartbeatApiHandler {
+	return &HeartbeatApiHandler{
+		config:              conf.Get(),
+		userSrvc:            userService,
+		heartbeatSrvc:       heartbeatService,
+		languageMappingSrvc: languageMappingService,
+	}
+}
+
+type heartbeatResponseVm struct {
+	Responses [][]interface{} `json:"responses"`
+}
+
+func (h *HeartbeatApiHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("/heartbeat").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).Handler,
+		customMiddleware.NewWakatimeRelayMiddleware().Handler,
+	)
+	r.Methods(http.MethodPost).HandlerFunc(h.Post)
+}
+
+// @Summary Push a new heartbeat
+// @ID post-heartbeat
+// @Tags heartbeat
+// @Accept json
+// @Param heartbeat body models.Heartbeat true "A heartbeat"
+// @Security ApiKeyAuth
+// @Success 201
+// @Router /heartbeat [post]
+func (h *HeartbeatApiHandler) Post(w http.ResponseWriter, r *http.Request) {
+	var heartbeats []*models.Heartbeat
+	user := middlewares.GetPrincipal(r)
+	opSys, editor, _ := utils.ParseUserAgent(r.Header.Get("User-Agent"))
+	machineName := r.Header.Get("X-Machine-Name")
+
+	dec := json.NewDecoder(r.Body)
+	if err := dec.Decode(&heartbeats); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	for _, hb := range heartbeats {
+		hb.OperatingSystem = opSys
+		hb.Editor = editor
+		hb.Machine = machineName
+		hb.User = user
+		hb.UserID = user.ID
+
+		if !hb.Valid() {
+			w.WriteHeader(http.StatusBadRequest)
+			w.Write([]byte("invalid heartbeat object"))
+			return
+		}
+
+		hb.Hashed()
+	}
+
+	if err := h.heartbeatSrvc.InsertBatch(heartbeats); err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte(conf.ErrInternalServerError))
+		logbuch.Error("failed to batch-insert heartbeats – %v", err)
+		return
+	}
+
+	if !user.HasData {
+		user.HasData = true
+		if _, err := h.userSrvc.Update(user); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(conf.ErrInternalServerError))
+			logbuch.Error("failed to update user – %v", err)
+			return
+		}
+	}
+
+	utils.RespondJSON(w, http.StatusCreated, constructSuccessResponse(len(heartbeats)))
+}
+
+// construct weird response format (see https://github.com/wakatime/wakatime/blob/2e636d389bf5da4e998e05d5285a96ce2c181e3d/wakatime/api.py#L288)
+// to make the cli consider all heartbeats to having been successfully saved
+// response looks like: { "responses": [ [ { "data": {...} }, 201 ], ... ] }
+func constructSuccessResponse(n int) *heartbeatResponseVm {
+	responses := make([][]interface{}, n)
+
+	for i := 0; i < n; i++ {
+		r := make([]interface{}, 2)
+		r[0] = nil
+		r[1] = http.StatusCreated
+		responses[i] = r
+	}
+
+	return &heartbeatResponseVm{
+		Responses: responses,
+	}
+}

routes/api/metrics.go

@@ -0,0 +1,271 @@
+package api
+
+import (
+	"errors"
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	"github.com/muety/wakapi/models"
+	v1 "github.com/muety/wakapi/models/compat/wakatime/v1"
+	mm "github.com/muety/wakapi/models/metrics"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+	"sort"
+	"time"
+)
+
+const (
+	MetricsPrefix = "wakatime"
+
+	DescHeartbeats       = "Total number of tracked heartbeats."
+	DescAllTime          = "Total seconds (all time)."
+	DescTotal            = "Total seconds."
+	DescEditors          = "Total seconds for each editor."
+	DescProjects         = "Total seconds for each project."
+	DescLanguages        = "Total seconds for each language."
+	DescOperatingSystems = "Total seconds for each operating system."
+	DescMachines         = "Total seconds for each machine."
+
+	DescAdminTotalTime       = "Total seconds (all users, all time)."
+	DescAdminTotalHeartbeats = "Total number of tracked heartbeats (all users, all time)"
+	DescAdminUserHeartbeats  = "Total number of tracked heartbeats by user (all time)."
+	DescAdminTotalUsers      = "Total number of registered users."
+	DescAdminActiveUsers     = "Number of active users."
+)
+
+type MetricsHandler struct {
+	config        *conf.Config
+	userSrvc      services.IUserService
+	summarySrvc   services.ISummaryService
+	heartbeatSrvc services.IHeartbeatService
+	keyValueSrvc  services.IKeyValueService
+}
+
+func NewMetricsHandler(userService services.IUserService, summaryService services.ISummaryService, heartbeatService services.IHeartbeatService, keyValueService services.IKeyValueService) *MetricsHandler {
+	return &MetricsHandler{
+		userSrvc:      userService,
+		summarySrvc:   summaryService,
+		heartbeatSrvc: heartbeatService,
+		keyValueSrvc:  keyValueService,
+		config:        conf.Get(),
+	}
+}
+
+func (h *MetricsHandler) RegisterRoutes(router *mux.Router) {
+	if !h.config.Security.ExposeMetrics {
+		return
+	}
+
+	logbuch.Info("exposing prometheus metrics under /api/metrics")
+
+	r := router.PathPrefix("/metrics").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).Handler,
+	)
+	r.Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+func (h *MetricsHandler) Get(w http.ResponseWriter, r *http.Request) {
+	reqUser := middlewares.GetPrincipal(r)
+	if reqUser == nil {
+		w.WriteHeader(http.StatusUnauthorized)
+		w.Write([]byte(conf.ErrUnauthorized))
+		return
+	}
+
+	var metrics mm.Metrics
+
+	if userMetrics, err := h.getUserMetrics(reqUser); err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte(conf.ErrInternalServerError))
+		return
+	} else {
+		for _, m := range *userMetrics {
+			metrics = append(metrics, m)
+		}
+	}
+
+	if reqUser.IsAdmin {
+		if adminMetrics, err := h.getAdminMetrics(reqUser); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(conf.ErrInternalServerError))
+			return
+		} else {
+			for _, m := range *adminMetrics {
+				metrics = append(metrics, m)
+			}
+		}
+	}
+
+	sort.Sort(metrics)
+
+	w.Header().Set("content-type", "text/plain; charset=utf-8")
+	w.Write([]byte(metrics.Print()))
+}
+
+func (h *MetricsHandler) getUserMetrics(user *models.User) (*mm.Metrics, error) {
+	var metrics mm.Metrics
+
+	summaryAllTime, err := h.summarySrvc.Aliased(time.Time{}, time.Now(), user, h.summarySrvc.Retrieve, false)
+	if err != nil {
+		logbuch.Error("failed to retrieve all time summary for user '%s' for metric", user.ID)
+		return nil, err
+	}
+
+	from, to := utils.MustResolveIntervalRaw("today")
+
+	summaryToday, err := h.summarySrvc.Aliased(from, to, user, h.summarySrvc.Retrieve, false)
+	if err != nil {
+		logbuch.Error("failed to retrieve today's summary for user '%s' for metric", user.ID)
+		return nil, err
+	}
+
+	heartbeatCount, err := h.heartbeatSrvc.CountByUser(user)
+	if err != nil {
+		logbuch.Error("failed to count heartbeats for user '%s' for metric", user.ID)
+		return nil, err
+	}
+
+	// User Metrics
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_cumulative_seconds_total",
+		Desc:   DescAllTime,
+		Value:  int(v1.NewAllTimeFrom(summaryAllTime, &models.Filters{}).Data.TotalSeconds),
+		Labels: []mm.Label{},
+	})
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_seconds_total",
+		Desc:   DescTotal,
+		Value:  int(summaryToday.TotalTime().Seconds()),
+		Labels: []mm.Label{},
+	})
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_heartbeats_total",
+		Desc:   DescHeartbeats,
+		Value:  int(heartbeatCount),
+		Labels: []mm.Label{},
+	})
+
+	for _, p := range summaryToday.Projects {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_project_seconds_total",
+			Desc:   DescProjects,
+			Value:  int(summaryToday.TotalTimeByKey(models.SummaryProject, p.Key).Seconds()),
+			Labels: []mm.Label{{Key: "name", Value: p.Key}},
+		})
+	}
+
+	for _, l := range summaryToday.Languages {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_language_seconds_total",
+			Desc:   DescLanguages,
+			Value:  int(summaryToday.TotalTimeByKey(models.SummaryLanguage, l.Key).Seconds()),
+			Labels: []mm.Label{{Key: "name", Value: l.Key}},
+		})
+	}
+
+	for _, e := range summaryToday.Editors {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_editor_seconds_total",
+			Desc:   DescEditors,
+			Value:  int(summaryToday.TotalTimeByKey(models.SummaryEditor, e.Key).Seconds()),
+			Labels: []mm.Label{{Key: "name", Value: e.Key}},
+		})
+	}
+
+	for _, o := range summaryToday.OperatingSystems {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_operating_system_seconds_total",
+			Desc:   DescOperatingSystems,
+			Value:  int(summaryToday.TotalTimeByKey(models.SummaryOS, o.Key).Seconds()),
+			Labels: []mm.Label{{Key: "name", Value: o.Key}},
+		})
+	}
+
+	for _, m := range summaryToday.Machines {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_machine_seconds_total",
+			Desc:   DescMachines,
+			Value:  int(summaryToday.TotalTimeByKey(models.SummaryMachine, m.Key).Seconds()),
+			Labels: []mm.Label{{Key: "name", Value: m.Key}},
+		})
+	}
+
+	return &metrics, nil
+}
+
+func (h *MetricsHandler) getAdminMetrics(user *models.User) (*mm.Metrics, error) {
+	var metrics mm.Metrics
+
+	if !user.IsAdmin {
+		return nil, errors.New("unauthorized")
+	}
+
+	var totalSeconds int
+	if t, err := h.keyValueSrvc.GetString(conf.KeyLatestTotalTime); err == nil && t != nil && t.Value != "" {
+		if d, err := time.ParseDuration(t.Value); err == nil {
+			totalSeconds = int(d.Seconds())
+		}
+	}
+
+	totalUsers, _ := h.userSrvc.Count()
+	totalHeartbeats, _ := h.heartbeatSrvc.Count()
+
+	activeUsers, err := h.userSrvc.GetActive()
+	if err != nil {
+		logbuch.Error("failed to retrieve active users for metric – %v", err)
+		return nil, err
+	}
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_admin_seconds_total",
+		Desc:   DescAdminTotalTime,
+		Value:  totalSeconds,
+		Labels: []mm.Label{},
+	})
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_admin_heartbeats_total",
+		Desc:   DescAdminTotalHeartbeats,
+		Value:  int(totalHeartbeats),
+		Labels: []mm.Label{},
+	})
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_admin_users_total",
+		Desc:   DescAdminTotalUsers,
+		Value:  int(totalUsers),
+		Labels: []mm.Label{},
+	})
+
+	metrics = append(metrics, &mm.CounterMetric{
+		Name:   MetricsPrefix + "_admin_users_active_total",
+		Desc:   DescAdminActiveUsers,
+		Value:  len(activeUsers),
+		Labels: []mm.Label{},
+	})
+
+	// Count per-user heartbeats
+
+	userCounts, err := h.heartbeatSrvc.CountByUsers(activeUsers)
+	if err != nil {
+		logbuch.Error("failed to count heartbeats for active users", err.Error())
+		return nil, err
+	}
+
+	for _, uc := range userCounts {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_admin_user_heartbeats_total",
+			Desc:   DescAdminUserHeartbeats,
+			Value:  int(uc.Count),
+			Labels: []mm.Label{{Key: "user", Value: uc.User}},
+		})
+	}
+
+	return &metrics, nil
+}

routes/api/summary.go

@@ -0,0 +1,55 @@
+package api
+
+import (
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	su "github.com/muety/wakapi/routes/utils"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+)
+
+type SummaryApiHandler struct {
+	config      *conf.Config
+	userSrvc    services.IUserService
+	summarySrvc services.ISummaryService
+}
+
+func NewSummaryApiHandler(userService services.IUserService, summaryService services.ISummaryService) *SummaryApiHandler {
+	return &SummaryApiHandler{
+		summarySrvc: summaryService,
+		userSrvc:    userService,
+		config:      conf.Get(),
+	}
+}
+
+func (h *SummaryApiHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("/summary").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).Handler,
+	)
+	r.Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+// @Summary Retrieve a summary
+// @ID get-summary
+// @Tags summary
+// @Produce json
+// @Param interval query string false "Interval identifier" Enums(today, yesterday, week, month, year, 7_days, last_7_days, 30_days, last_30_days, 12_months, last_12_months, any)
+// @Param from query string false "Start date (e.g. '2021-02-07')"
+// @Param to query string false "End date (e.g. '2021-02-08')"
+// @Param recompute query bool false "Whether to recompute the summary from raw heartbeat or use cache"
+// @Security ApiKeyAuth
+// @Success 200 {object} models.Summary
+// @Router /summary [get]
+func (h *SummaryApiHandler) Get(w http.ResponseWriter, r *http.Request) {
+	summary, err, status := su.LoadUserSummary(h.summarySrvc, r)
+	if err != nil {
+		w.WriteHeader(status)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	utils.RespondJSON(w, http.StatusOK, summary)
+}

routes/compat/shields/v1/badge.go

@@ -0,0 +1,143 @@
+package v1
+
+import (
+	"fmt"
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	v1 "github.com/muety/wakapi/models/compat/shields/v1"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"github.com/patrickmn/go-cache"
+	"net/http"
+	"regexp"
+	"time"
+)
+
+const (
+	intervalPattern     = `interval:([a-z0-9_]+)`
+	entityFilterPattern = `(project|os|editor|language|machine):([_a-zA-Z0-9-]+)`
+)
+
+type BadgeHandler struct {
+	config      *conf.Config
+	userSrvc    services.IUserService
+	summarySrvc services.ISummaryService
+	cache       *cache.Cache
+}
+
+func NewBadgeHandler(summaryService services.ISummaryService, userService services.IUserService) *BadgeHandler {
+	return &BadgeHandler{
+		summarySrvc: summaryService,
+		userSrvc:    userService,
+		cache:       cache.New(time.Hour, time.Hour),
+		config:      conf.Get(),
+	}
+}
+
+func (h *BadgeHandler) RegisterRoutes(router *mux.Router) {
+	// no auth middleware here, handler itself resolves the user
+	r := router.PathPrefix("/compat/shields/v1/{user}").Subrouter()
+	r.Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+// @Summary Get badge data
+// @Description Retrieve total time for a given entity (e.g. a project) within a given range (e.g. one week) in a format compatible with [Shields.io](https://shields.io/endpoint). Requires public data access to be allowed.
+// @ID get-badge
+// @Tags badges
+// @Produce json
+// @Param user path string true "User ID to fetch data for"
+// @Param interval path string true "Interval to aggregate data for" Enums(today, yesterday, week, month, year, 7_days, last_7_days, 30_days, last_30_days, 12_months, last_12_months, any)
+// @Param filter path string true "Filter to apply (e.g. 'project:wakapi' or 'language:Go')"
+// @Success 200 {object} v1.BadgeData
+// @Router /compat/shields/v1/{user}/{interval}/{filter} [get]
+func (h *BadgeHandler) Get(w http.ResponseWriter, r *http.Request) {
+	intervalReg := regexp.MustCompile(intervalPattern)
+	entityFilterReg := regexp.MustCompile(entityFilterPattern)
+
+	var filterEntity, filterKey string
+	if groups := entityFilterReg.FindStringSubmatch(r.URL.Path); len(groups) > 2 {
+		filterEntity, filterKey = groups[1], groups[2]
+	}
+
+	var interval = models.IntervalPast30Days
+	if groups := intervalReg.FindStringSubmatch(r.URL.Path); len(groups) > 1 {
+		if i, err := utils.ParseInterval(groups[1]); err == nil {
+			interval = i
+		}
+	}
+
+	requestedUserId := mux.Vars(r)["user"]
+	user, err := h.userSrvc.GetUserById(requestedUserId)
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+
+	_, rangeFrom, rangeTo := utils.ResolveInterval(interval)
+	minStart := utils.StartOfDay(rangeTo.Add(-24 * time.Hour * time.Duration(user.ShareDataMaxDays)))
+	// negative value means no limit
+	if rangeFrom.Before(minStart) && user.ShareDataMaxDays >= 0 {
+		w.WriteHeader(http.StatusForbidden)
+		w.Write([]byte("requested time range too broad"))
+		return
+	}
+
+	var filters *models.Filters
+	switch filterEntity {
+	case "project":
+		filters = models.NewFiltersWith(models.SummaryProject, filterKey)
+	case "os":
+		filters = models.NewFiltersWith(models.SummaryOS, filterKey)
+	case "editor":
+		filters = models.NewFiltersWith(models.SummaryEditor, filterKey)
+	case "language":
+		filters = models.NewFiltersWith(models.SummaryLanguage, filterKey)
+	case "machine":
+		filters = models.NewFiltersWith(models.SummaryMachine, filterKey)
+	default:
+		filters = &models.Filters{}
+	}
+
+	cacheKey := fmt.Sprintf("%s_%v_%s_%s", user.ID, *interval, filterEntity, filterKey)
+	if cacheResult, ok := h.cache.Get(cacheKey); ok {
+		utils.RespondJSON(w, http.StatusOK, cacheResult.(*v1.BadgeData))
+		return
+	}
+
+	summary, err, status := h.loadUserSummary(user, interval)
+	if err != nil {
+		w.WriteHeader(status)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	vm := v1.NewBadgeDataFrom(summary, filters)
+	h.cache.SetDefault(cacheKey, vm)
+	utils.RespondJSON(w, http.StatusOK, vm)
+}
+
+func (h *BadgeHandler) loadUserSummary(user *models.User, interval *models.IntervalKey) (*models.Summary, error, int) {
+	err, from, to := utils.ResolveInterval(interval)
+	if err != nil {
+		return nil, err, http.StatusBadRequest
+	}
+
+	summaryParams := &models.SummaryParams{
+		From: from,
+		To:   to,
+		User: user,
+	}
+
+	var retrieveSummary services.SummaryRetriever = h.summarySrvc.Retrieve
+	if summaryParams.Recompute {
+		retrieveSummary = h.summarySrvc.Summarize
+	}
+
+	summary, err := h.summarySrvc.Aliased(summaryParams.From, summaryParams.To, summaryParams.User, retrieveSummary, summaryParams.Recompute)
+	if err != nil {
+		return nil, err, http.StatusInternalServerError
+	}
+
+	return summary, nil, http.StatusOK
+}

routes/compat/wakatime/v1/all_time.go

@@ -0,0 +1,89 @@
+package v1
+
+import (
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	"github.com/muety/wakapi/models"
+	v1 "github.com/muety/wakapi/models/compat/wakatime/v1"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+type AllTimeHandler struct {
+	config      *conf.Config
+	userSrvc    services.IUserService
+	summarySrvc services.ISummaryService
+}
+
+func NewAllTimeHandler(userService services.IUserService, summaryService services.ISummaryService) *AllTimeHandler {
+	return &AllTimeHandler{
+		userSrvc:    userService,
+		summarySrvc: summaryService,
+		config:      conf.Get(),
+	}
+}
+
+func (h *AllTimeHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("/compat/wakatime/v1/users/{user}/all_time_since_today").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).Handler,
+	)
+	r.Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+// @Summary Retrieve summary for all time
+// @Description Mimics https://wakatime.com/developers#all_time_since_today
+// @ID get-all-time
+// @Tags wakatime
+// @Produce json
+// @Param user path string true "User ID to fetch data for (or 'current')"
+// @Security ApiKeyAuth
+// @Success 200 {object} v1.AllTimeViewModel
+// @Router /compat/wakatime/v1/users/{user}/all_time_since_today [get]
+func (h *AllTimeHandler) Get(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	values, _ := url.ParseQuery(r.URL.RawQuery)
+
+	requestedUser := vars["user"]
+	authorizedUser := middlewares.GetPrincipal(r)
+
+	if requestedUser != authorizedUser.ID && requestedUser != "current" {
+		w.WriteHeader(http.StatusForbidden)
+		return
+	}
+
+	summary, err, status := h.loadUserSummary(authorizedUser)
+	if err != nil {
+		w.WriteHeader(status)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	vm := v1.NewAllTimeFrom(summary, models.NewFiltersWith(models.SummaryProject, values.Get("project")))
+	utils.RespondJSON(w, http.StatusOK, vm)
+}
+
+func (h *AllTimeHandler) loadUserSummary(user *models.User) (*models.Summary, error, int) {
+	summaryParams := &models.SummaryParams{
+		From:      time.Time{},
+		To:        time.Now(),
+		User:      user,
+		Recompute: false,
+	}
+
+	var retrieveSummary services.SummaryRetriever = h.summarySrvc.Retrieve
+	if summaryParams.Recompute {
+		retrieveSummary = h.summarySrvc.Summarize
+	}
+
+	summary, err := h.summarySrvc.Aliased(summaryParams.From, summaryParams.To, summaryParams.User, retrieveSummary, summaryParams.Recompute)
+	if err != nil {
+		return nil, err, http.StatusInternalServerError
+	}
+
+	return summary, nil, http.StatusOK
+}

routes/compat/wakatime/v1/stats.go

@@ -0,0 +1,123 @@
+package v1
+
+import (
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	"github.com/muety/wakapi/models"
+	v1 "github.com/muety/wakapi/models/compat/wakatime/v1"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+	"time"
+)
+
+type StatsHandler struct {
+	config      *conf.Config
+	userSrvc    services.IUserService
+	summarySrvc services.ISummaryService
+}
+
+func NewStatsHandler(userService services.IUserService, summaryService services.ISummaryService) *StatsHandler {
+	return &StatsHandler{
+		userSrvc:    userService,
+		summarySrvc: summaryService,
+		config:      conf.Get(),
+	}
+}
+
+func (h *StatsHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).WithOptionalFor([]string{"/"}).Handler,
+	)
+	r.Path("/v1/users/{user}/stats/{range}").Methods(http.MethodGet).HandlerFunc(h.Get)
+	r.Path("/compat/wakatime/v1/users/{user}/stats/{range}").Methods(http.MethodGet).HandlerFunc(h.Get)
+
+	// Also works without range, see https://github.com/anuraghazra/github-readme-stats/issues/865#issuecomment-776186592
+	r.Path("/v1/users/{user}/stats").Methods(http.MethodGet).HandlerFunc(h.Get)
+	r.Path("/compat/wakatime/v1/users/{user}/stats").Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+// TODO: support filtering (requires https://github.com/muety/wakapi/issues/108)
+
+func (h *StatsHandler) Get(w http.ResponseWriter, r *http.Request) {
+	var vars = mux.Vars(r)
+	var authorizedUser, requestedUser *models.User
+
+	authorizedUser = middlewares.GetPrincipal(r)
+	if authorizedUser != nil && vars["user"] == "current" {
+		vars["user"] = authorizedUser.ID
+	}
+
+	requestedUser, err := h.userSrvc.GetUserById(vars["user"])
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		w.Write([]byte("user not found"))
+		return
+	}
+
+	rangeParam := vars["range"]
+	if rangeParam == "" {
+		rangeParam = (*models.IntervalPast7Days)[0]
+	}
+
+	err, rangeFrom, rangeTo := utils.ResolveIntervalRaw(rangeParam)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		w.Write([]byte("invalid range"))
+		return
+	}
+
+	minStart := utils.StartOfDay(rangeTo.Add(-24 * time.Hour * time.Duration(requestedUser.ShareDataMaxDays)))
+	if (authorizedUser == nil || requestedUser.ID != authorizedUser.ID) &&
+		rangeFrom.Before(minStart) && requestedUser.ShareDataMaxDays >= 0 {
+		w.WriteHeader(http.StatusForbidden)
+		w.Write([]byte("requested time range too broad"))
+		return
+	}
+
+	summary, err, status := h.loadUserSummary(requestedUser, rangeFrom, rangeTo)
+	if err != nil {
+		w.WriteHeader(status)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	stats := v1.NewStatsFrom(summary, &models.Filters{})
+
+	// post filter stats according to user's given sharing permissions
+	if !requestedUser.ShareEditors {
+		stats.Data.Editors = nil
+	}
+	if !requestedUser.ShareLanguages {
+		stats.Data.Languages = nil
+	}
+	if !requestedUser.ShareProjects {
+		stats.Data.Projects = nil
+	}
+	if !requestedUser.ShareOSs {
+		stats.Data.OperatingSystems = nil
+	}
+	if !requestedUser.ShareMachines {
+		stats.Data.Machines = nil
+	}
+
+	utils.RespondJSON(w, http.StatusOK, stats)
+}
+
+func (h *StatsHandler) loadUserSummary(user *models.User, start, end time.Time) (*models.Summary, error, int) {
+	overallParams := &models.SummaryParams{
+		From:      start,
+		To:        end,
+		User:      user,
+		Recompute: false,
+	}
+
+	summary, err := h.summarySrvc.Aliased(overallParams.From, overallParams.To, user, h.summarySrvc.Retrieve, false)
+	if err != nil {
+		return nil, err, http.StatusInternalServerError
+	}
+
+	return summary, nil, http.StatusOK
+}

routes/compat/wakatime/v1/summaries.go

@@ -0,0 +1,132 @@
+package v1
+
+import (
+	"errors"
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	"github.com/muety/wakapi/models"
+	v1 "github.com/muety/wakapi/models/compat/wakatime/v1"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+	"strings"
+	"time"
+)
+
+type SummariesHandler struct {
+	config      *conf.Config
+	userSrvc    services.IUserService
+	summarySrvc services.ISummaryService
+}
+
+func NewSummariesHandler(userService services.IUserService, summaryService services.ISummaryService) *SummariesHandler {
+	return &SummariesHandler{
+		userSrvc:    userService,
+		summarySrvc: summaryService,
+		config:      conf.Get(),
+	}
+}
+
+func (h *SummariesHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("/compat/wakatime/v1/users/{user}/summaries").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).Handler,
+	)
+	r.Methods(http.MethodGet).HandlerFunc(h.Get)
+}
+
+// TODO: Support parameters: project, branches, timeout, writes_only, timezone
+// See https://wakatime.com/developers#summaries.
+// Timezone can be specified via an offset suffix (e.g. +02:00) in date strings.
+// Requires https://github.com/muety/wakapi/issues/108.
+
+// @Summary Retrieve WakaTime-compatible summaries
+// @Description Mimics https://wakatime.com/developers#summaries.
+// @ID get-wakatime-summaries
+// @Tags wakatime
+// @Produce json
+// @Param user path string true "User ID to fetch data for (or 'current')"
+// @Param range query string false "Range interval identifier" Enums(today, yesterday, week, month, year, 7_days, last_7_days, 30_days, last_30_days, 12_months, last_12_months, any)
+// @Param start query string false "Start date (e.g. '2021-02-07')"
+// @Param end query string false "End date (e.g. '2021-02-08')"
+// @Security ApiKeyAuth
+// @Success 200 {object} v1.SummariesViewModel
+// @Router /compat/wakatime/v1/users/{user}/summaries [get]
+func (h *SummariesHandler) Get(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	requestedUser := vars["user"]
+	authorizedUser := middlewares.GetPrincipal(r)
+
+	if requestedUser != authorizedUser.ID && requestedUser != "current" {
+		w.WriteHeader(http.StatusForbidden)
+		return
+	}
+
+	summaries, err, status := h.loadUserSummaries(r)
+	if err != nil {
+		w.WriteHeader(status)
+		w.Write([]byte(err.Error()))
+		return
+	}
+
+	filters := &models.Filters{}
+	if projectQuery := r.URL.Query().Get("project"); projectQuery != "" {
+		filters.Project = projectQuery
+	}
+
+	vm := v1.NewSummariesFrom(summaries, filters)
+	utils.RespondJSON(w, http.StatusOK, vm)
+}
+
+func (h *SummariesHandler) loadUserSummaries(r *http.Request) ([]*models.Summary, error, int) {
+	user := middlewares.GetPrincipal(r)
+	params := r.URL.Query()
+	rangeParam, startParam, endParam := params.Get("range"), params.Get("start"), params.Get("end")
+
+	var start, end time.Time
+	if rangeParam != "" {
+		// range param takes precedence
+		if err, parsedFrom, parsedTo := utils.ResolveIntervalRaw(rangeParam); err == nil {
+			start, end = parsedFrom, parsedTo
+		} else {
+			return nil, errors.New("invalid 'range' parameter"), http.StatusBadRequest
+		}
+	} else if err, parsedFrom, parsedTo := utils.ResolveIntervalRaw(startParam); err == nil && startParam == endParam {
+		// also accept start param to be a range param
+		start, end = parsedFrom, parsedTo
+	} else {
+		// eventually, consider start and end params a date
+		var err error
+
+		start, err = time.Parse(time.RFC3339, strings.Replace(startParam, " ", "+", 1))
+		if err != nil {
+			return nil, errors.New("missing required 'start' parameter"), http.StatusBadRequest
+		}
+
+		end, err = time.Parse(time.RFC3339, strings.Replace(endParam, " ", "+", 1))
+		if err != nil {
+			return nil, errors.New("missing required 'end' parameter"), http.StatusBadRequest
+		}
+	}
+
+	overallParams := &models.SummaryParams{
+		From:      start,
+		To:        end,
+		User:      user,
+		Recompute: false,
+	}
+
+	intervals := utils.SplitRangeByDays(overallParams.From, overallParams.To)
+	summaries := make([]*models.Summary, len(intervals))
+
+	for i, interval := range intervals {
+		summary, err := h.summarySrvc.Aliased(interval[0], interval[1], user, h.summarySrvc.Retrieve, false)
+		if err != nil {
+			return nil, err, http.StatusInternalServerError
+		}
+		summaries[i] = summary
+	}
+
+	return summaries, nil, http.StatusOK
+}

routes/handler.go

@@ -0,0 +1,7 @@
+package routes
+
+import "github.com/gorilla/mux"
+
+type Handler interface {
+	RegisterRoutes(router *mux.Router)
+}

routes/heartbeat.go

@@ -1,56 +0,0 @@
-package routes
-
-import (
-	"encoding/json"
-	"net/http"
-	"os"
-
-	"github.com/n1try/wakapi/services"
-	"github.com/n1try/wakapi/utils"
-
-	"github.com/n1try/wakapi/models"
-)
-
-type HeartbeatHandler struct {
-	HeartbeatSrvc *services.HeartbeatService
-}
-
-func (h *HeartbeatHandler) Post(w http.ResponseWriter, r *http.Request) {
-	if r.Method != http.MethodPost {
-		w.WriteHeader(http.StatusMethodNotAllowed)
-		return
-	}
-
-	var heartbeats []*models.Heartbeat
-	user := r.Context().Value(models.UserKey).(*models.User)
-	opSys, editor, _ := utils.ParseUserAgent(r.Header.Get("User-Agent"))
-
-	dec := json.NewDecoder(r.Body)
-	if err := dec.Decode(&heartbeats); err != nil {
-		w.WriteHeader(http.StatusBadRequest)
-		w.Write([]byte(err.Error()))
-		return
-	}
-
-	for _, hb := range heartbeats {
-		hb.OperatingSystem = opSys
-		hb.Editor = editor
-		hb.User = user
-		hb.UserID = user.ID
-		hb.Augment(h.HeartbeatSrvc.Config.CustomLanguages)
-
-		if !hb.Valid() {
-			w.WriteHeader(http.StatusBadRequest)
-			w.Write([]byte("Invalid heartbeat object."))
-			return
-		}
-	}
-
-	if err := h.HeartbeatSrvc.InsertBatch(heartbeats); err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		os.Stderr.WriteString(err.Error())
-		return
-	}
-
-	w.WriteHeader(http.StatusOK)
-}

routes/home.go

@@ -0,0 +1,71 @@
+package routes
+
+import (
+	"fmt"
+	"github.com/gorilla/mux"
+	"github.com/gorilla/schema"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/models/view"
+	"github.com/muety/wakapi/services"
+	"net/http"
+	"strconv"
+	"time"
+)
+
+type HomeHandler struct {
+	config       *conf.Config
+	keyValueSrvc services.IKeyValueService
+}
+
+var loginDecoder = schema.NewDecoder()
+var signupDecoder = schema.NewDecoder()
+var resetPasswordDecoder = schema.NewDecoder()
+
+func NewHomeHandler(keyValueService services.IKeyValueService) *HomeHandler {
+	return &HomeHandler{
+		config:       conf.Get(),
+		keyValueSrvc: keyValueService,
+	}
+}
+
+func (h *HomeHandler) RegisterRoutes(router *mux.Router) {
+	router.Path("/").Methods(http.MethodGet).HandlerFunc(h.GetIndex)
+}
+
+func (h *HomeHandler) GetIndex(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if cookie, err := r.Cookie(models.AuthCookieKey); err == nil && cookie.Value != "" {
+		http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
+		return
+	}
+
+	templates[conf.IndexTemplate].Execute(w, h.buildViewModel(r))
+}
+
+func (h *HomeHandler) buildViewModel(r *http.Request) *view.HomeViewModel {
+	var totalHours int
+	var totalUsers int
+
+	if t, err := h.keyValueSrvc.GetString(conf.KeyLatestTotalTime); err == nil && t != nil && t.Value != "" {
+		if d, err := time.ParseDuration(t.Value); err == nil {
+			totalHours = int(d.Hours())
+		}
+	}
+
+	if t, err := h.keyValueSrvc.GetString(conf.KeyLatestTotalUsers); err == nil && t != nil && t.Value != "" {
+		if d, err := strconv.Atoi(t.Value); err == nil {
+			totalUsers = d
+		}
+	}
+
+	return &view.HomeViewModel{
+		Success:    r.URL.Query().Get("success"),
+		Error:      r.URL.Query().Get("error"),
+		TotalHours: totalHours,
+		TotalUsers: totalUsers,
+	}
+}

routes/imprint.go

@@ -0,0 +1,46 @@
+package routes
+
+import (
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/models/view"
+	"github.com/muety/wakapi/services"
+	"net/http"
+)
+
+type ImprintHandler struct {
+	config       *conf.Config
+	keyValueSrvc services.IKeyValueService
+}
+
+func NewImprintHandler(keyValueService services.IKeyValueService) *ImprintHandler {
+	return &ImprintHandler{
+		config:       conf.Get(),
+		keyValueSrvc: keyValueService,
+	}
+}
+
+func (h *ImprintHandler) RegisterRoutes(router *mux.Router) {
+	router.Path("/imprint").Methods(http.MethodGet).HandlerFunc(h.GetImprint)
+}
+
+func (h *ImprintHandler) GetImprint(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	text := "failed to load content"
+	if data, err := h.keyValueSrvc.GetString(models.ImprintKey); err == nil {
+		text = data.Value
+	}
+
+	templates[conf.ImprintTemplate].Execute(w, h.buildViewModel(r).WithHtmlText(text))
+}
+
+func (h *ImprintHandler) buildViewModel(r *http.Request) *view.ImprintViewModel {
+	return &view.ImprintViewModel{
+		Success: r.URL.Query().Get("success"),
+		Error:   r.URL.Query().Get("error"),
+	}
+}

routes/login.go

@@ -0,0 +1,308 @@
+package routes
+
+import (
+	"fmt"
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/mux"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/models/view"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+	"net/url"
+	"time"
+)
+
+type LoginHandler struct {
+	config   *conf.Config
+	userSrvc services.IUserService
+	mailSrvc services.IMailService
+}
+
+func NewLoginHandler(userService services.IUserService, mailService services.IMailService) *LoginHandler {
+	return &LoginHandler{
+		config:   conf.Get(),
+		userSrvc: userService,
+		mailSrvc: mailService,
+	}
+}
+
+func (h *LoginHandler) RegisterRoutes(router *mux.Router) {
+	router.Path("/login").Methods(http.MethodGet).HandlerFunc(h.GetIndex)
+	router.Path("/login").Methods(http.MethodPost).HandlerFunc(h.PostLogin)
+	router.Path("/logout").Methods(http.MethodPost).HandlerFunc(h.PostLogout)
+	router.Path("/signup").Methods(http.MethodGet).HandlerFunc(h.GetSignup)
+	router.Path("/signup").Methods(http.MethodPost).HandlerFunc(h.PostSignup)
+	router.Path("/set-password").Methods(http.MethodGet).HandlerFunc(h.GetSetPassword)
+	router.Path("/set-password").Methods(http.MethodPost).HandlerFunc(h.PostSetPassword)
+	router.Path("/reset-password").Methods(http.MethodGet).HandlerFunc(h.GetResetPassword)
+	router.Path("/reset-password").Methods(http.MethodPost).HandlerFunc(h.PostResetPassword)
+}
+
+func (h *LoginHandler) GetIndex(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if cookie, err := r.Cookie(models.AuthCookieKey); err == nil && cookie.Value != "" {
+		http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
+		return
+	}
+
+	templates[conf.LoginTemplate].Execute(w, h.buildViewModel(r))
+}
+
+func (h *LoginHandler) PostLogin(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if cookie, err := r.Cookie(models.AuthCookieKey); err == nil && cookie.Value != "" {
+		http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
+		return
+	}
+
+	var login models.Login
+	if err := r.ParseForm(); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.LoginTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+	if err := loginDecoder.Decode(&login, r.PostForm); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.LoginTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+
+	user, err := h.userSrvc.GetUserById(login.Username)
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		templates[conf.LoginTemplate].Execute(w, h.buildViewModel(r).WithError("resource not found"))
+		return
+	}
+
+	if !utils.CompareBcrypt(user.Password, login.Password, h.config.Security.PasswordSalt) {
+		w.WriteHeader(http.StatusUnauthorized)
+		templates[conf.LoginTemplate].Execute(w, h.buildViewModel(r).WithError("invalid credentials"))
+		return
+	}
+
+	encoded, err := h.config.Security.SecureCookie.Encode(models.AuthCookieKey, login.Username)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		templates[conf.LoginTemplate].Execute(w, h.buildViewModel(r).WithError("internal server error"))
+		return
+	}
+
+	user.LastLoggedInAt = models.CustomTime(time.Now())
+	h.userSrvc.Update(user)
+
+	http.SetCookie(w, h.config.CreateCookie(models.AuthCookieKey, encoded, "/"))
+	http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
+}
+
+func (h *LoginHandler) PostLogout(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	http.SetCookie(w, h.config.GetClearCookie(models.AuthCookieKey, "/"))
+	http.Redirect(w, r, fmt.Sprintf("%s/", h.config.Server.BasePath), http.StatusFound)
+}
+
+func (h *LoginHandler) GetSignup(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if cookie, err := r.Cookie(models.AuthCookieKey); err == nil && cookie.Value != "" {
+		http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
+		return
+	}
+
+	templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r))
+}
+
+func (h *LoginHandler) PostSignup(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if !h.config.IsDev() && !h.config.Security.AllowSignup {
+		w.WriteHeader(http.StatusForbidden)
+		templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r).WithError("registration is disabled on this server"))
+		return
+	}
+
+	if cookie, err := r.Cookie(models.AuthCookieKey); err == nil && cookie.Value != "" {
+		http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
+		return
+	}
+
+	var signup models.Signup
+	if err := r.ParseForm(); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+	if err := signupDecoder.Decode(&signup, r.PostForm); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+
+	if !signup.IsValid() {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r).WithError("invalid parameters"))
+		return
+	}
+
+	numUsers, _ := h.userSrvc.Count()
+
+	_, created, err := h.userSrvc.CreateOrGet(&signup, numUsers == 0)
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r).WithError("failed to create new user"))
+		return
+	}
+	if !created {
+		w.WriteHeader(http.StatusConflict)
+		templates[conf.SignupTemplate].Execute(w, h.buildViewModel(r).WithError("user already existing"))
+		return
+	}
+
+	http.Redirect(w, r, fmt.Sprintf("%s/?success=%s", h.config.Server.BasePath, "account created successfully"), http.StatusFound)
+}
+
+func (h *LoginHandler) GetResetPassword(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+	templates[conf.ResetPasswordTemplate].Execute(w, h.buildViewModel(r))
+}
+
+func (h *LoginHandler) GetSetPassword(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	values, _ := url.ParseQuery(r.URL.RawQuery)
+	token := values.Get("token")
+	if token == "" {
+		w.WriteHeader(http.StatusUnauthorized)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("invalid or missing token"))
+		return
+	}
+
+	vm := &view.SetPasswordViewModel{
+		LoginViewModel: *h.buildViewModel(r),
+		Token:          token,
+	}
+
+	templates[conf.SetPasswordTemplate].Execute(w, vm)
+}
+
+func (h *LoginHandler) PostSetPassword(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	var setRequest models.SetPasswordRequest
+	if err := r.ParseForm(); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+	if err := signupDecoder.Decode(&setRequest, r.PostForm); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+
+	user, err := h.userSrvc.GetUserByResetToken(setRequest.Token)
+	if err != nil {
+		w.WriteHeader(http.StatusUnauthorized)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("invalid token"))
+		return
+	}
+
+	if !setRequest.IsValid() {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("invalid parameters"))
+		return
+	}
+
+	user.Password = setRequest.Password
+	user.ResetToken = ""
+	if hash, err := utils.HashBcrypt(user.Password, h.config.Security.PasswordSalt); err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("failed to set new password"))
+		return
+	} else {
+		user.Password = hash
+	}
+
+	if _, err := h.userSrvc.Update(user); err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		templates[conf.SetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("failed to save new password"))
+		return
+	}
+
+	http.Redirect(w, r, fmt.Sprintf("%s/login?success=%s", h.config.Server.BasePath, "password updated successfully"), http.StatusFound)
+}
+
+func (h *LoginHandler) PostResetPassword(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if !h.config.Mail.Enabled {
+		w.WriteHeader(http.StatusNotImplemented)
+		templates[conf.ResetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("mailing is disabled on this server"))
+		return
+	}
+
+	var resetRequest models.ResetPasswordRequest
+	if err := r.ParseForm(); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.ResetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+	if err := resetPasswordDecoder.Decode(&resetRequest, r.PostForm); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.ResetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
+		return
+	}
+
+	if user, err := h.userSrvc.GetUserByEmail(resetRequest.Email); user != nil && err == nil {
+		if u, err := h.userSrvc.GenerateResetToken(user); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			templates[conf.ResetPasswordTemplate].Execute(w, h.buildViewModel(r).WithError("failed to generate password reset token"))
+			return
+		} else {
+			go func(user *models.User) {
+				link := fmt.Sprintf("%s/set-password?token=%s", h.config.Server.GetPublicUrl(), user.ResetToken)
+				if err := h.mailSrvc.SendPasswordReset(user, link); err != nil {
+					logbuch.Error("failed to send password reset mail to %s – %v", user.ID, err)
+				} else {
+					logbuch.Info("sent password reset mail to %s", user.ID)
+				}
+			}(u)
+		}
+	} else {
+		logbuch.Warn("password reset requested for unregistered address '%s'", resetRequest.Email)
+	}
+
+	http.Redirect(w, r, fmt.Sprintf("%s/?success=%s", h.config.Server.BasePath, "an e-mail was sent to you in case your e-mail address was registered"), http.StatusFound)
+}
+
+func (h *LoginHandler) buildViewModel(r *http.Request) *view.LoginViewModel {
+	numUsers, _ := h.userSrvc.Count()
+
+	return &view.LoginViewModel{
+		Success:    r.URL.Query().Get("success"),
+		Error:      r.URL.Query().Get("error"),
+		TotalUsers: int(numUsers),
+	}
+}

routes/routes.go

@@ -0,0 +1,110 @@
+package routes
+
+import (
+	"fmt"
+	"html/template"
+	"io/fs"
+	"io/ioutil"
+	"net/http"
+	"path"
+	"strings"
+
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/utils"
+	"github.com/muety/wakapi/views"
+)
+
+func Init() {
+	loadTemplates()
+}
+
+type action func(w http.ResponseWriter, r *http.Request) (int, string, string)
+
+var templates map[string]*template.Template
+
+func loadTemplates() {
+	const tplPath = "/views"
+	tpls := template.New("").Funcs(template.FuncMap{
+		"json":           utils.Json,
+		"date":           utils.FormatDateHuman,
+		"simpledate":     utils.FormatDate,
+		"simpledatetime": utils.FormatDateTime,
+		"title":          strings.Title,
+		"join":           strings.Join,
+		"add":            utils.Add,
+		"capitalize":     utils.Capitalize,
+		"toRunes":        utils.ToRunes,
+		"entityTypes":    models.SummaryTypes,
+		"typeName":       typeName,
+		"isDev": func() bool {
+			return config.Get().IsDev()
+		},
+		"getBasePath": func() string {
+			return config.Get().Server.BasePath
+		},
+		"getVersion": func() string {
+			return config.Get().Version
+		},
+		"getDbType": func() string {
+			return strings.ToLower(config.Get().Db.Type)
+		},
+		"htmlSafe": func(html string) template.HTML {
+			return template.HTML(html)
+		},
+	})
+	templates = make(map[string]*template.Template)
+
+	files, err := fs.ReadDir(views.TemplateFiles, ".")
+	if err != nil {
+		panic(err)
+	}
+
+	for _, file := range files {
+		tplName := file.Name()
+		if file.IsDir() || path.Ext(tplName) != ".html" {
+			continue
+		}
+
+		templateFile, err := views.TemplateFiles.Open(tplName)
+		if err != nil {
+			panic(err)
+		}
+		templateData, err := ioutil.ReadAll(templateFile)
+		if err != nil {
+			panic(err)
+		}
+
+		templateFile.Close()
+
+		tpl, err := tpls.New(tplName).Parse(string(templateData))
+		if err != nil {
+			panic(err)
+		}
+
+		templates[tplName] = tpl
+	}
+}
+
+func typeName(t uint8) string {
+	if t == models.SummaryProject {
+		return "project"
+	}
+	if t == models.SummaryLanguage {
+		return "language"
+	}
+	if t == models.SummaryEditor {
+		return "editor"
+	}
+	if t == models.SummaryOS {
+		return "operating system"
+	}
+	if t == models.SummaryMachine {
+		return "machine"
+	}
+	return "unknown"
+}
+
+func defaultErrorRedirectTarget() string {
+	return fmt.Sprintf("%s/?error=unauthorized", config.Get().Server.BasePath)
+}

routes/settings.go

@@ -0,0 +1,579 @@
+package routes
+
+import (
+	"encoding/base64"
+	"fmt"
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/mux"
+	"github.com/gorilla/schema"
+	conf "github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/middlewares"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/models/view"
+	"github.com/muety/wakapi/services"
+	"github.com/muety/wakapi/services/imports"
+	"github.com/muety/wakapi/utils"
+	"net/http"
+	"strconv"
+	"time"
+)
+
+type SettingsHandler struct {
+	config              *conf.Config
+	userSrvc            services.IUserService
+	summarySrvc         services.ISummaryService
+	heartbeatSrvc       services.IHeartbeatService
+	aliasSrvc           services.IAliasService
+	aggregationSrvc     services.IAggregationService
+	languageMappingSrvc services.ILanguageMappingService
+	keyValueSrvc        services.IKeyValueService
+	mailSrvc            services.IMailService
+	httpClient          *http.Client
+}
+
+var credentialsDecoder = schema.NewDecoder()
+
+func NewSettingsHandler(
+	userService services.IUserService,
+	heartbeatService services.IHeartbeatService,
+	summaryService services.ISummaryService,
+	aliasService services.IAliasService,
+	aggregationService services.IAggregationService,
+	languageMappingService services.ILanguageMappingService,
+	keyValueService services.IKeyValueService,
+	mailService services.IMailService,
+) *SettingsHandler {
+	return &SettingsHandler{
+		config:              conf.Get(),
+		summarySrvc:         summaryService,
+		aliasSrvc:           aliasService,
+		aggregationSrvc:     aggregationService,
+		languageMappingSrvc: languageMappingService,
+		userSrvc:            userService,
+		heartbeatSrvc:       heartbeatService,
+		keyValueSrvc:        keyValueService,
+		mailSrvc:            mailService,
+		httpClient:          &http.Client{Timeout: 10 * time.Second},
+	}
+}
+
+func (h *SettingsHandler) RegisterRoutes(router *mux.Router) {
+	r := router.PathPrefix("/settings").Subrouter()
+	r.Use(
+		middlewares.NewAuthenticateMiddleware(h.userSrvc).WithRedirectTarget(defaultErrorRedirectTarget()).Handler,
+	)
+	r.Methods(http.MethodGet).HandlerFunc(h.GetIndex)
+	r.Methods(http.MethodPost).HandlerFunc(h.PostIndex)
+}
+
+func (h *SettingsHandler) GetIndex(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r))
+}
+
+func (h *SettingsHandler) PostIndex(w http.ResponseWriter, r *http.Request) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	if err := r.ParseForm(); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r).WithError("missing form values"))
+		return
+	}
+
+	action := r.PostForm.Get("action")
+	r.PostForm.Del("action")
+
+	actionFunc := h.dispatchAction(action)
+	if actionFunc == nil {
+		logbuch.Warn("failed to dispatch action '%s'", action)
+		w.WriteHeader(http.StatusBadRequest)
+		templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r).WithError("unknown action requests"))
+		return
+	}
+
+	status, successMsg, errorMsg := actionFunc(w, r)
+
+	// action responded itself
+	if status == -1 {
+		return
+	}
+
+	if errorMsg != "" {
+		w.WriteHeader(status)
+		templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r).WithError(errorMsg))
+		return
+	}
+	if successMsg != "" {
+		w.WriteHeader(status)
+		templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r).WithSuccess(successMsg))
+		return
+	}
+	templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r))
+}
+
+func (h *SettingsHandler) dispatchAction(action string) action {
+	switch action {
+	case "change_password":
+		return h.actionChangePassword
+	case "update_user":
+		return h.actionUpdateUser
+	case "reset_apikey":
+		return h.actionResetApiKey
+	case "delete_alias":
+		return h.actionDeleteAlias
+	case "add_alias":
+		return h.actionAddAlias
+	case "delete_mapping":
+		return h.actionDeleteLanguageMapping
+	case "add_mapping":
+		return h.actionAddLanguageMapping
+	case "update_sharing":
+		return h.actionUpdateSharing
+	case "toggle_wakatime":
+		return h.actionSetWakatimeApiKey
+	case "import_wakatime":
+		return h.actionImportWaktime
+	case "regenerate_summaries":
+		return h.actionRegenerateSummaries
+	case "delete_account":
+		return h.actionDeleteUser
+	}
+	return nil
+}
+
+func (h *SettingsHandler) actionUpdateUser(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+
+	var payload models.UserDataUpdate
+	if err := r.ParseForm(); err != nil {
+		return http.StatusBadRequest, "", "missing parameters"
+	}
+	if err := credentialsDecoder.Decode(&payload, r.PostForm); err != nil {
+		return http.StatusBadRequest, "", "missing parameters"
+	}
+
+	if !payload.IsValid() {
+		return http.StatusBadRequest, "", "invalid parameters"
+	}
+
+	user.Email = payload.Email
+
+	if _, err := h.userSrvc.Update(user); err != nil {
+		return http.StatusInternalServerError, "", conf.ErrInternalServerError
+	}
+
+	return http.StatusOK, "user updated successfully", ""
+}
+
+func (h *SettingsHandler) actionChangePassword(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+
+	var credentials models.CredentialsReset
+	if err := r.ParseForm(); err != nil {
+		return http.StatusBadRequest, "", "missing parameters"
+	}
+	if err := credentialsDecoder.Decode(&credentials, r.PostForm); err != nil {
+		return http.StatusBadRequest, "", "missing parameters"
+	}
+
+	if !utils.CompareBcrypt(user.Password, credentials.PasswordOld, h.config.Security.PasswordSalt) {
+		return http.StatusUnauthorized, "", "invalid credentials"
+	}
+
+	if !credentials.IsValid() {
+		return http.StatusBadRequest, "", "invalid parameters"
+	}
+
+	user.Password = credentials.PasswordNew
+	if hash, err := utils.HashBcrypt(user.Password, h.config.Security.PasswordSalt); err != nil {
+		return http.StatusInternalServerError, "", conf.ErrInternalServerError
+	} else {
+		user.Password = hash
+	}
+
+	if _, err := h.userSrvc.Update(user); err != nil {
+		return http.StatusInternalServerError, "", conf.ErrInternalServerError
+	}
+
+	login := &models.Login{
+		Username: user.ID,
+		Password: user.Password,
+	}
+	encoded, err := h.config.Security.SecureCookie.Encode(models.AuthCookieKey, login.Username)
+	if err != nil {
+		return http.StatusInternalServerError, "", conf.ErrInternalServerError
+	}
+
+	http.SetCookie(w, h.config.CreateCookie(models.AuthCookieKey, encoded, "/"))
+	return http.StatusOK, "password was updated successfully", ""
+}
+
+func (h *SettingsHandler) actionResetApiKey(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+	if _, err := h.userSrvc.ResetApiKey(user); err != nil {
+		return http.StatusInternalServerError, "", conf.ErrInternalServerError
+	}
+
+	msg := fmt.Sprintf("your new api key is: %s", user.ApiKey)
+	return http.StatusOK, msg, ""
+}
+
+func (h *SettingsHandler) actionUpdateSharing(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	var err error
+	user := middlewares.GetPrincipal(r)
+
+	defer h.userSrvc.FlushCache()
+
+	user.ShareProjects, err = strconv.ParseBool(r.PostFormValue("share_projects"))
+	user.ShareLanguages, err = strconv.ParseBool(r.PostFormValue("share_languages"))
+	user.ShareEditors, err = strconv.ParseBool(r.PostFormValue("share_editors"))
+	user.ShareOSs, err = strconv.ParseBool(r.PostFormValue("share_oss"))
+	user.ShareMachines, err = strconv.ParseBool(r.PostFormValue("share_machines"))
+	user.ShareDataMaxDays, err = strconv.Atoi(r.PostFormValue("max_days"))
+
+	if err != nil {
+		return http.StatusBadRequest, "", "invalid input"
+	}
+
+	if _, err := h.userSrvc.Update(user); err != nil {
+		return http.StatusInternalServerError, "", "internal sever error"
+	}
+
+	return http.StatusOK, "settings updated", ""
+}
+
+func (h *SettingsHandler) actionDeleteAlias(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+	aliasKey := r.PostFormValue("key")
+	aliasType, err := strconv.Atoi(r.PostFormValue("type"))
+	if err != nil {
+		aliasType = 99 // nothing will be found later on
+	}
+
+	if aliases, err := h.aliasSrvc.GetByUserAndKeyAndType(user.ID, aliasKey, uint8(aliasType)); err != nil {
+		return http.StatusNotFound, "", "aliases not found"
+	} else if err := h.aliasSrvc.DeleteMulti(aliases); err != nil {
+		return http.StatusInternalServerError, "", "could not delete aliases"
+	}
+
+	return http.StatusOK, "aliases deleted successfully", ""
+}
+
+func (h *SettingsHandler) actionAddAlias(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+	user := middlewares.GetPrincipal(r)
+	aliasKey := r.PostFormValue("key")
+	aliasValue := r.PostFormValue("value")
+	aliasType, err := strconv.Atoi(r.PostFormValue("type"))
+	if err != nil {
+		aliasType = 99 // Alias.IsValid() will return false later on
+	}
+
+	alias := &models.Alias{
+		UserID: user.ID,
+		Key:    aliasKey,
+		Value:  aliasValue,
+		Type:   uint8(aliasType),
+	}
+
+	if _, err := h.aliasSrvc.Create(alias); err != nil {
+		// TODO: distinguish between bad request, conflict and server error
+		return http.StatusBadRequest, "", "invalid input"
+	}
+
+	return http.StatusOK, "alias added successfully", ""
+}
+
+func (h *SettingsHandler) actionDeleteLanguageMapping(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+	id, err := strconv.Atoi(r.PostFormValue("mapping_id"))
+	if err != nil {
+		return http.StatusInternalServerError, "", "could not delete mapping"
+	}
+
+	mapping, err := h.languageMappingSrvc.GetById(uint(id))
+	if err != nil || mapping == nil {
+		return http.StatusNotFound, "", "mapping not found"
+	} else if mapping.UserID != user.ID {
+		return http.StatusForbidden, "", "not allowed to delete mapping"
+	}
+
+	if err := h.languageMappingSrvc.Delete(mapping); err != nil {
+		return http.StatusInternalServerError, "", "could not delete mapping"
+	}
+
+	return http.StatusOK, "mapping deleted successfully", ""
+}
+
+func (h *SettingsHandler) actionAddLanguageMapping(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+	user := middlewares.GetPrincipal(r)
+	extension := r.PostFormValue("extension")
+	language := r.PostFormValue("language")
+
+	if extension[0] == '.' {
+		extension = extension[1:]
+	}
+
+	mapping := &models.LanguageMapping{
+		UserID:    user.ID,
+		Extension: extension,
+		Language:  language,
+	}
+
+	if _, err := h.languageMappingSrvc.Create(mapping); err != nil {
+		return http.StatusConflict, "", "mapping already exists"
+	}
+
+	return http.StatusOK, "mapping added successfully", ""
+}
+
+func (h *SettingsHandler) actionSetWakatimeApiKey(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+	apiKey := r.PostFormValue("api_key")
+
+	// Healthcheck, if a new API key is set, i.e. the feature is activated
+	if (user.WakatimeApiKey == "" && apiKey != "") && !h.validateWakatimeKey(apiKey) {
+		return http.StatusBadRequest, "", "failed to connect to WakaTime, API key invalid?"
+	}
+
+	if _, err := h.userSrvc.SetWakatimeApiKey(user, apiKey); err != nil {
+		return http.StatusInternalServerError, "", conf.ErrInternalServerError
+	}
+
+	return http.StatusOK, "Wakatime API Key updated successfully", ""
+}
+
+func (h *SettingsHandler) actionImportWaktime(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+	if user.WakatimeApiKey == "" {
+		return http.StatusForbidden, "", "not connected to wakatime"
+	}
+
+	kvKey := fmt.Sprintf("%s_%s", conf.KeyLastImportImport, user.ID)
+
+	if !h.config.IsDev() {
+		lastImportKv := h.keyValueSrvc.MustGetString(kvKey)
+		lastImport, _ := time.Parse(time.RFC822, lastImportKv.Value)
+		if time.Now().Sub(lastImport) < time.Duration(h.config.App.ImportBackoffMin)*time.Minute {
+			return http.StatusTooManyRequests,
+				"",
+				fmt.Sprintf("Too many data imports. You are only allowed to request an import every %d minutes.", h.config.App.ImportBackoffMin)
+		}
+	}
+
+	go func(user *models.User) {
+		start := time.Now()
+		importer := imports.NewWakatimeHeartbeatImporter(user.WakatimeApiKey)
+
+		countBefore, err := h.heartbeatSrvc.CountByUser(user)
+		if err != nil {
+			println(err)
+		}
+
+		var stream <-chan *models.Heartbeat
+		if latest, err := h.heartbeatSrvc.GetLatestByOriginAndUser(imports.OriginWakatime, user); latest == nil || err != nil {
+			stream = importer.ImportAll(user)
+		} else {
+			// if an import has happened before, only import heartbeats newer than the latest of the last import
+			stream = importer.Import(user, latest.Time.T(), time.Now())
+		}
+
+		count := 0
+		batch := make([]*models.Heartbeat, 0)
+
+		insert := func(batch []*models.Heartbeat) {
+			if err := h.heartbeatSrvc.InsertBatch(batch); err != nil {
+				logbuch.Warn("failed to insert imported heartbeat, already existing? – %v", err)
+			}
+		}
+
+		for hb := range stream {
+			count++
+			batch = append(batch, hb)
+
+			if len(batch) == h.config.App.ImportBatchSize {
+				insert(batch)
+				batch = make([]*models.Heartbeat, 0)
+			}
+		}
+
+		if len(batch) > 0 {
+			insert(batch)
+		}
+
+		countAfter, _ := h.heartbeatSrvc.CountByUser(user)
+		logbuch.Info("downloaded %d heartbeats for user '%s' (%d actually imported)", count, user.ID, countAfter-countBefore)
+
+		h.regenerateSummaries(user)
+
+		if user.Email != "" {
+			if err := h.mailSrvc.SendImportNotification(user, time.Now().Sub(start), int(countAfter-countBefore)); err != nil {
+				logbuch.Error("failed to send import notification mail to %s – %v", user.ID, err)
+			} else {
+				logbuch.Info("sent import notification mail to %s", user.ID)
+			}
+		}
+	}(user)
+
+	h.keyValueSrvc.PutString(&models.KeyStringValue{
+		Key:   kvKey,
+		Value: time.Now().Format(time.RFC822),
+	})
+
+	return http.StatusAccepted, "Import started. This will take several minutes. Please check back later.", ""
+}
+
+func (h *SettingsHandler) actionRegenerateSummaries(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	go func(user *models.User) {
+		if err := h.regenerateSummaries(user); err != nil {
+			logbuch.Error("failed to regenerate summaries for user '%s' – %v", user.ID, err)
+		}
+	}(middlewares.GetPrincipal(r))
+
+	return http.StatusAccepted, "summaries are being regenerated – this may take a up to a couple of minutes, please come back later", ""
+}
+
+func (h *SettingsHandler) actionDeleteUser(w http.ResponseWriter, r *http.Request) (int, string, string) {
+	if h.config.IsDev() {
+		loadTemplates()
+	}
+
+	user := middlewares.GetPrincipal(r)
+	go func(user *models.User) {
+		logbuch.Info("deleting user '%s' shortly", user.ID)
+		time.Sleep(5 * time.Minute)
+		if err := h.userSrvc.Delete(user); err != nil {
+			logbuch.Error("failed to delete user '%s' – %v", user.ID, err)
+		} else {
+			logbuch.Info("successfully deleted user '%s'", user.ID)
+		}
+	}(user)
+
+	http.SetCookie(w, h.config.GetClearCookie(models.AuthCookieKey, "/"))
+	http.Redirect(w, r, fmt.Sprintf("%s/?success=%s", h.config.Server.BasePath, "Your account will be deleted in a few minutes. Sorry to you go."), http.StatusFound)
+	return -1, "", ""
+}
+
+func (h *SettingsHandler) validateWakatimeKey(apiKey string) bool {
+	headers := http.Header{
+		"Accept": []string{"application/json"},
+		"Authorization": []string{
+			fmt.Sprintf("Basic %s", base64.StdEncoding.EncodeToString([]byte(apiKey))),
+		},
+	}
+
+	request, err := http.NewRequest(
+		http.MethodGet,
+		conf.WakatimeApiUrl+conf.WakatimeApiUserUrl,
+		nil,
+	)
+	if err != nil {
+		return false
+	}
+
+	request.Header = headers
+
+	response, err := h.httpClient.Do(request)
+	if err != nil || response.StatusCode < 200 || response.StatusCode >= 300 {
+		return false
+	}
+
+	return true
+}
+
+func (h *SettingsHandler) regenerateSummaries(user *models.User) error {
+	logbuch.Info("clearing summaries for user '%s'", user.ID)
+	if err := h.summarySrvc.DeleteByUser(user.ID); err != nil {
+		logbuch.Error("failed to clear summaries: %v", err)
+		return err
+	}
+
+	if err := h.aggregationSrvc.Run(map[string]bool{user.ID: true}); err != nil {
+		logbuch.Error("failed to regenerate summaries: %v", err)
+		return err
+	}
+
+	return nil
+}
+
+func (h *SettingsHandler) buildViewModel(r *http.Request) *view.SettingsViewModel {
+	user := middlewares.GetPrincipal(r)
+	mappings, _ := h.languageMappingSrvc.GetByUser(user.ID)
+	aliases, _ := h.aliasSrvc.GetByUser(user.ID)
+	aliasMap := make(map[string][]*models.Alias)
+	for _, a := range aliases {
+		k := fmt.Sprintf("%s_%d", a.Key, a.Type)
+		if _, ok := aliasMap[k]; !ok {
+			aliasMap[k] = []*models.Alias{a}
+		} else {
+			aliasMap[k] = append(aliasMap[k], a)
+		}
+	}
+
+	combinedAliases := make([]*view.SettingsVMCombinedAlias, 0)
+	for _, l := range aliasMap {
+		ca := &view.SettingsVMCombinedAlias{
+			Key:    l[0].Key,
+			Type:   l[0].Type,
+			Values: make([]string, len(l)),
+		}
+		for i, a := range l {
+			ca.Values[i] = a.Value
+		}
+		combinedAliases = append(combinedAliases, ca)
+	}
+
+	return &view.SettingsViewModel{
+		User:             user,
+		LanguageMappings: mappings,
+		Aliases:          combinedAliases,
+		Success:          r.URL.Query().Get("success"),
+		Error:            r.URL.Query().Get("error"),
+	}
+}