fix: concurrent access to language mappings (resolve #83 )

fix: do not attempt to bind on ipv6 in docker
feat: ability to choose number of top entities to display (resolve #81 )
2023-08-10 21:12:56 +03:00 · 2021-01-07 10:52:49 +01:00 · 2021-01-07 10:04:36 +01:00 · 2021-01-05 12:41:01 +01:00 · 2021-01-05 11:28:51 +01:00 · 2021-01-04 11:39:02 +01:00
77 changed files with 2629 additions and 678 deletions
--- a/.dockerignore
+++ b/.dockerignore
@ -1 +1,6 @@
-.env
+.env
+config*.yml
+!config.default.yml
+*.db
+*.exe
+wakapi
--- a/.gitignore
+++ b/.gitignore
@ -6,5 +6,6 @@ wakapi
 build
 *.exe
 *.db
-config.yml
+config*.yml
+!config.default.yml
 config.ini
--- a/19
+++ b/19
@ -1,6 +1,6 @@
 # Build Stage

-FROM golang:1.13 AS build-env
+FROM golang:1.15 AS build-env
 WORKDIR /src
 ADD ./go.mod .
 RUN go mod download
@ -8,19 +8,11 @@ RUN go mod download
 ADD . .
 RUN go build -o wakapi

-# Final Stage
+# Run Stage

 # When running the application using `docker run`, you can pass environment variables
 # to override config values using `-e` syntax.
-# Available options are:
-# – WAKAPI_DB_TYPE
-# – WAKAPI_DB_USER
-# – WAKAPI_DB_PASSWORD
-# – WAKAPI_DB_HOST
-# – WAKAPI_DB_PORT
-# – WAKAPI_DB_NAME
-# – WAKAPI_PASSWORD_SALT
-# – WAKAPI_BASE_PATH
+# Available options can be found in [README.md#-configuration](README.md#-configuration)

 FROM debian
 WORKDIR /app
@ -32,13 +24,14 @@ 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'

 COPY --from=build-env /src/wakapi /app/
 COPY --from=build-env /src/config.default.yml /app/config.yml
 COPY --from=build-env /src/version.txt /app/

-RUN sed -i 's/listen_ipv4: 127.0.0.1/listen_ipv4: 0.0.0.0/g' /app/config.yml
-RUN sed -i 's/insecure_cookies: false/insecure_cookies: true/g' /app/config.yml
+RUN sed -i 's/listen_ipv6: ::1/listen_ipv6: /g' /app/config.yml

 ADD static /app/static
 ADD data /app/data
--- a/README.md
+++ b/README.md
@ -1,6 +1,6 @@
 # 📈 wakapi

-![](https://img.shields.io/github/license/muety/wakapi)
+![](https://badges.fw-web.space/github/license/muety/wakapi)
 ![GitHub release (latest by date)](https://badges.fw-web.space/github/v/release/muety/wakapi)
 ![GitHub code size in bytes](https://img.shields.io/github/languages/code-size/muety/wakapi)
 ![Docker Cloud Build Status](https://badges.fw-web.space/docker/cloud/build/n1try/wakapi)
@ -21,9 +21,10 @@

 ![Wakapi screenshot](https://anchr.io/i/bxQ69.png)

-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!
+## 📬 **User Survey**
+I'd love to get some community feedback from active Wakapi users. If you like, please participate in the recent [user survey](https://github.com/muety/wakapi/issues/82). Thanks a lot!

-## 👀 Hosted Service
+## 👀  Demo
 🔥 **New:** Wakapi is available as a hosted service now. Check out **[wakapi.dev](https://wakapi.dev)**. Please use responsibly.

 To use the hosted version set `api_url = https://wakapi.dev/api/heartbeat`. However, we do not guarantee data persistence, so you might potentially lose your data if the service is taken down some day ❕
@ -52,25 +53,33 @@ To use the hosted version set `api_url = https://wakapi.dev/api/heartbeat`. Howe
 **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` to `true` in `config.yml`. 

 ### Run with Docker
-```
-docker run -d -p 3000:3000 --name wakapi n1try/wakapi
+```bash
+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)" --name wakapi n1try/wakapi
 ```

 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.

+### Running tests
+```bash
+CGO_FLAGS="-g -O2 -Wno-return-local-addr" go test -json -coverprofile=coverage/coverage.out ./... -run ./...
+```
+
 ## 🔧 Configuration
 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.cleanup`               | `WAKAPI_CLEANUP`            | `false`        | Whether or not to clean up old heartbeats (be careful!)             |
 | `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`    | Network address 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 |
 | `db.host`                   | `WAKAPI_DB_HOST`            | -              | Database host                                                       |
 | `db.port`                   | `WAKAPI_DB_PORT`            | -              | Database port                                                       |
 | `db.user`                   | `WAKAPI_DB_USER`            | -              | Database user                                                       |
@ -92,6 +101,10 @@ api_key = the_api_key_printed_to_the_console_after_starting_the_server`

 You can view your API Key after logging in to the web interface.

+### Optional: Client-side proxy
+
+See the [advanced setup instructions](docs/advanced_setup.md).  
+
 ## 🔵 Customization

 ### Aliases
@ -136,6 +149,9 @@ We recently introduced support for [Shields.io](https://shields.io) badges (see
 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 `server.listen_ipv4` to `0.0.0.0` in `config.yml`

+## 🙏 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!
+
 ## ⚠️ 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!**

--- a/config.default.yml
+++ b/config.default.yml
@ -1,12 +1,14 @@
 env: development

 server:
-  listen_ipv4: 127.0.0.1
+  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: /

 app:
-  cleanup: false            # only edit, if you know what you're doing
  aggregation_time: '02:15' # time at which to run daily aggregation batch jobs
  custom_languages:
    vue: Vue
@ -24,3 +26,4 @@ db:
 security:
  password_salt:            # CHANGE !
  insecure_cookies: false
+  cookie_max_age: 172800
--- a/config/config.go
+++ b/config/config.go
@ -14,6 +14,7 @@ import (
 	"gorm.io/gorm"
 	"io/ioutil"
 	"log"
+	"net/http"
 	"os"
 	"strings"
 )
@ -28,13 +29,10 @@ const (
 	SQLDialectSqlite   = "sqlite3"
 )

-var (
-	cfg   *Config
-	cFlag *string
-)
+var cfg *Config
+var cFlag = flag.String("config", defaultConfigPath, "config file location")

 type appConfig struct {
-	CleanUp         bool              `default:"false" env:"WAKAPI_CLEANUP"`
 	AggregationTime string            `yaml:"aggregation_time" default:"02:15" env:"WAKAPI_AGGREGATION_TIME"`
 	CustomLanguages map[string]string `yaml:"custom_languages"`
 	LanguageColors  map[string]string `yaml:"-"`
@ -44,6 +42,7 @@ type securityConfig struct {
 	// 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:"-"`
 }

@ -58,9 +57,12 @@ type dbConfig struct {
 }

 type serverConfig struct {
-	Port       int    `default:"3000" env:"WAKAPI_PORT"`
-	ListenIpV4 string `yaml:"listen_ipv4" default:"127.0.0.1" env:"WAKAPI_LISTEN_IPV4"`
-	BasePath   string `yaml:"base_path" default:"/" env:"WAKAPI_BASE_PATH"`
+	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"`
+	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 Config struct {
@ -72,15 +74,34 @@ type Config struct {
 	Server   serverConfig
 }

-func init() {
-	cFlag = flag.String("c", defaultConfigPath, "config file location")
-	flag.Parse()
+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:
@ -158,6 +179,14 @@ func sqliteConnectionString(config *dbConfig) string {
 	return config.Name
 }

+func (c *appConfig) GetCustomLanguages() map[string]string {
+	return cloneStringMap(c.CustomLanguages)
+}
+
+func (c *appConfig) GetLanguageColors() map[string]string {
+	return cloneStringMap(c.LanguageColors)
+}
+
 func IsDev(env string) bool {
 	return env == "dev" || env == "development"
 }
@ -221,6 +250,8 @@ func Get() *Config {
 func Load() *Config {
 	config := &Config{}

+	flag.Parse()
+
 	maybeMigrateLegacyConfig()

 	if err := configor.New(&configor.Config{}).Load(config, mustReadConfigLocation()); err != nil {
@ -244,6 +275,10 @@ func Load() *Config {
 		}
 	}

+	if config.Server.ListenIpV4 == "" && config.Server.ListenIpV6 == "" {
+		log.Fatalln("either of listen_ipv4 or listen_ipv6 must be set")
+	}
+
 	Set(config)
 	return Get()
 }
--- a/config/config_test.go
+++ b/config/config_test.go
@ -0,0 +1,66 @@
+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",
+		MaxConn:  10,
+	}
+
+	assert.Equal(t, fmt.Sprintf(
+		"%s:%s@tcp(%s:%d)/%s?charset=utf8&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))
+}
--- a/config/templates.go
+++ b/config/templates.go
@ -2,6 +2,7 @@ package config

 const (
 	IndexTemplate    = "index.tpl.html"
+	LoginTemplate    = "login.tpl.html"
 	ImprintTemplate  = "imprint.tpl.html"
 	SignupTemplate   = "signup.tpl.html"
 	SettingsTemplate = "settings.tpl.html"
--- a/config/utils.go
+++ b/config/utils.go
@ -0,0 +1,9 @@
+package config
+
+func cloneStringMap(m map[string]string) map[string]string {
+	m2 := make(map[string]string)
+	for k, v := range m {
+		m2[k] = v
+	}
+	return m2
+}
--- a/coverage/coverage.out
+++ b/coverage/coverage.out
@ -0,0 +1,519 @@
+mode: set
+github.com/muety/wakapi/models/shared.go:34.52,37.16 3 0
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--- a/docs/advanced_setup.md
+++ b/docs/advanced_setup.md
@ -0,0 +1,29 @@
+# Advanced Setup
+## Optional: Client-side proxy
+Most Wakatime plugins work in a way that, for every heartbeat to send, the plugin calls your local [wakatime-cli](https://github.com/wakatime/wakatime) (a small Python program that is automatically installed when installing a Wakatime plugin) with a few command-line arguments, which is then run as a new process. Inside that process, a heartbeat request is forged and sent to the backend API – Wakapi in this case.
+
+While this is convenient for plugin developers, as they do not have to deal with sending HTTP requests, etc., it comes with a minor drawback. Because the CLI process shuts down after each request, its TCP connection is closed as well. Accordingly, **TCP connections cannot be re-used** and every single heartbeat request is inevitably preceded by the `SYN` + `SYN ACK` + `ACK` sequence for establishing a new TCP connection as well as a handshake for establishing a new TLS session.
+
+While this certainly does not hurt, it is still a bit of overhead. You can avoid that by setting up a local reverse proxy on your machine, that keeps running as a daemon and can therefore keep a continuous connection.
+
+In this example, [Caddy](https://caddyserver.com) is used as an easy-to-set-up webserver / reverse proxy.
+
+1. [Install Caddy](https://caddyserver.com/)
+    * When installing manually, don't forget to set up a systemd service to start Caddy on system startup
+1. Create a Caddyfile
+    ```
+    # /etc/caddy/Caddyfile
+   
+    http://localhost:8070 {
+        reverse_proxy * {
+            to https://wakapi.dev  # <-- substitute your own Wakapi host here
+            header_up Host {http.reverse_proxy.upstream.host}
+            header_down -Server
+        }
+    }
+    ```
+1. Restart Caddy
+1. Verify that you can access [`http://localhost:8070/api/health`](http://localhost:8070/api/health)
+1. Update `~/.wakatime.cfg`
+    * Set `api_url = http://localhost:8070/api/heartbeat`
+1. Done
--- a/go.mod
+++ b/go.mod
@ -3,11 +3,11 @@ module github.com/muety/wakapi
 go 1.13

 require (
+	github.com/go-co-op/gocron v0.3.3
 	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.3
 	github.com/gorilla/schema v1.1.0
 	github.com/gorilla/securecookie v1.1.1
-	github.com/jasonlvhit/gocron v0.0.0-20191106203602-f82992d443f4
 	github.com/jinzhu/configor v1.2.0
 	github.com/joho/godotenv v1.3.0
 	github.com/kr/text v0.2.0 // indirect
@ -16,6 +16,7 @@ require (
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/rubenv/sql-migrate v0.0.0-20200402132117-435005d389bc
 	github.com/satori/go.uuid v1.2.0
+	github.com/stretchr/testify v1.6.1
 	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
 	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/ini.v1 v1.50.0
--- a/go.sum
+++ b/go.sum
@ -64,6 +64,8 @@ github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVB
 github.com/franela/goreq v0.0.0-20171204163338-bcd34c9993f8/go.mod h1:ZhphrRTfi2rbfLwlschooIH4+wKKDR4Pdxhh+TRoA20=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-co-op/gocron v0.3.3 h1:QnarcMZWWKrEP25uCbtDiLsnnGw+PhCjL3wNITdWJOs=
+github.com/go-co-op/gocron v0.3.3/go.mod h1:Y9PWlYqDChf2Nbgg7kfS+ZsXHDTZbMZYPEQ0MILqH+M=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.10.0/go.mod h1:xUsJbQ/Fp4kEt7AFgCuvyX4a71u8h9jB8tj/ORgOZ7o=
@ -204,8 +206,6 @@ github.com/jackc/puddle v0.0.0-20190608224051-11cab39313c9/go.mod h1:m4B5Dj62Y0f
 github.com/jackc/puddle v1.1.0/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dvjSWk=
 github.com/jackc/puddle v1.1.1/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dvjSWk=
 github.com/jackc/puddle v1.1.2/go.mod h1:m4B5Dj62Y0fbyuIc15OsIqK0+JU8nkqQjsgx7dvjSWk=
-github.com/jasonlvhit/gocron v0.0.0-20191106203602-f82992d443f4 h1:UbQcOUL8J8EpnhYmLa2v6y5PSOPEdRRSVQxh7imPjHg=
-github.com/jasonlvhit/gocron v0.0.0-20191106203602-f82992d443f4/go.mod h1:1nXLkt6gXojCECs34KL3+LlZ3gTpZlkPUA8ejW3WeP0=
 github.com/jinzhu/configor v1.2.0 h1:u78Jsrxw2+3sGbGMgpY64ObKU4xWCNmNRJIjGVqxYQA=
 github.com/jinzhu/configor v1.2.0/go.mod h1:nX89/MOmDba7ZX7GCyU/VIaQ2Ar2aizBl2d3JLF/rDc=
 github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E=
@ -382,12 +382,15 @@ github.com/streadway/amqp v0.0.0-20190827072141-edfb9018d271/go.mod h1:AZpEONHx3
 github.com/streadway/handy v0.0.0-20190108123426-d5acb3125c2a/go.mod h1:qNTQ5P5JnDBl6z3cMAg/SywNDC5ABu5ApDIw6lUbRmI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.2.0 h1:Hbg2NidpLE8veEBkEZTL3CvlkUIVzuU9jDplZO54c48=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
 github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
+github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
+github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/tmc/grpc-websocket-proxy v0.0.0-20170815181823-89b8d40f7ca8/go.mod h1:ncp9v5uamzpCO7NfCPTXjqaC+bZgJeR0sMTm6dMHP7U=
 github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8/go.mod h1:VFNgLljTbGfSG7qAOspJ7OScBnGdDN/yBr0sguwnwf0=
 github.com/urfave/cli v1.20.0/go.mod h1:70zkFmudgCuE/ngEzBv17Jvp/497gISqfk5gWijbERA=
@ -452,6 +455,7 @@ golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@ -554,6 +558,8 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gorm.io/driver/mysql v1.0.3 h1:+JKBYPfn1tygR1/of/Fh2T8iwuVwzt+PEJmKaXzMQXg=
 gorm.io/driver/mysql v1.0.3/go.mod h1:twGxftLBlFgNVNakL7F+P/x9oYqoymG3YYT8cAfI9oI=
 gorm.io/driver/postgres v1.0.5 h1:raX6ezL/ciUmaYTvOq48jq1GE95aMC0CmxQYbxQ4Ufw=
--- a/main.go
+++ b/main.go
@ -1,6 +1,7 @@
 package main

 import (
+	"fmt"
 	"github.com/gorilla/handlers"
 	conf "github.com/muety/wakapi/config"
 	"github.com/muety/wakapi/migrations/common"
@ -28,22 +29,22 @@ var (
 )

 var (
-	aliasRepository           *repositories.AliasRepository
-	heartbeatRepository       *repositories.HeartbeatRepository
-	userRepository            *repositories.UserRepository
-	languageMappingRepository *repositories.LanguageMappingRepository
-	summaryRepository         *repositories.SummaryRepository
-	keyValueRepository        *repositories.KeyValueRepository
+	aliasRepository           repositories.IAliasRepository
+	heartbeatRepository       repositories.IHeartbeatRepository
+	userRepository            repositories.IUserRepository
+	languageMappingRepository repositories.ILanguageMappingRepository
+	summaryRepository         repositories.ISummaryRepository
+	keyValueRepository        repositories.IKeyValueRepository
 )

 var (
-	aliasService           *services.AliasService
-	heartbeatService       *services.HeartbeatService
-	userService            *services.UserService
-	languageMappingService *services.LanguageMappingService
-	summaryService         *services.SummaryService
-	aggregationService     *services.AggregationService
-	keyValueService        *services.KeyValueService
+	aliasService           services.IAliasService
+	heartbeatService       services.IHeartbeatService
+	userService            services.IUserService
+	languageMappingService services.ILanguageMappingService
+	summaryService         services.ISummaryService
+	aggregationService     services.IAggregationService
+	keyValueService        services.IKeyValueService
 )

 // TODO: Refactor entire project to be structured after business domains
@ -102,12 +103,15 @@ func main() {

 	// TODO: move endpoint registration to the respective routes files

+	routes.Init()
+
 	// Handlers
 	summaryHandler := routes.NewSummaryHandler(summaryService)
 	healthHandler := routes.NewHealthHandler(db)
 	heartbeatHandler := routes.NewHeartbeatHandler(heartbeatService, languageMappingService)
 	settingsHandler := routes.NewSettingsHandler(userService, summaryService, aggregationService, languageMappingService)
-	homeHandler := routes.NewHomeHandler(userService)
+	homeHandler := routes.NewHomeHandler()
+	loginHandler := routes.NewLoginHandler(userService)
 	imprintHandler := routes.NewImprintHandler(keyValueService)
 	wakatimeV1AllHandler := wtV1Routes.NewAllTimeHandler(summaryService)
 	wakatimeV1SummariesHandler := wtV1Routes.NewSummariesHandler(summaryService)
@ -140,10 +144,11 @@ func main() {

 	// Public Routes
 	publicRouter.Path("/").Methods(http.MethodGet).HandlerFunc(homeHandler.GetIndex)
-	publicRouter.Path("/login").Methods(http.MethodPost).HandlerFunc(homeHandler.PostLogin)
-	publicRouter.Path("/logout").Methods(http.MethodPost).HandlerFunc(homeHandler.PostLogout)
-	publicRouter.Path("/signup").Methods(http.MethodGet).HandlerFunc(homeHandler.GetSignup)
-	publicRouter.Path("/signup").Methods(http.MethodPost).HandlerFunc(homeHandler.PostSignup)
+	publicRouter.Path("/login").Methods(http.MethodGet).HandlerFunc(loginHandler.GetIndex)
+	publicRouter.Path("/login").Methods(http.MethodPost).HandlerFunc(loginHandler.PostLogin)
+	publicRouter.Path("/logout").Methods(http.MethodPost).HandlerFunc(loginHandler.PostLogout)
+	publicRouter.Path("/signup").Methods(http.MethodGet).HandlerFunc(loginHandler.GetSignup)
+	publicRouter.Path("/signup").Methods(http.MethodPost).HandlerFunc(loginHandler.PostSignup)
 	publicRouter.Path("/imprint").Methods(http.MethodGet).HandlerFunc(imprintHandler.GetImprint)

 	// Summary Routes
@ -174,15 +179,71 @@ func main() {
 	router.PathPrefix("/assets").Handler(http.FileServer(http.Dir("./static")))

 	// Listen HTTP
-	portString := config.Server.ListenIpV4 + ":" + strconv.Itoa(config.Server.Port)
-	s := &http.Server{
-		Handler:      router,
-		Addr:         portString,
-		ReadTimeout:  10 * time.Second,
-		WriteTimeout: 10 * time.Second,
+	listen(router)
+}
+
+func listen(handler http.Handler) {
+	var s4, s6 *http.Server
+
+	// 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,
+		}
 	}
-	log.Printf("Listening on %+s\n", portString)
-	s.ListenAndServe()
+
+	// 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 {
+			fmt.Printf("Listening for HTTPS on %s.\n", s4.Addr)
+			go func() {
+				if err := s4.ListenAndServeTLS(config.Server.TlsCertPath, config.Server.TlsKeyPath); err != nil {
+					log.Fatalln(err)
+				}
+			}()
+		}
+		if s6 != nil {
+			fmt.Printf("Listening for HTTPS on %s.\n", s6.Addr)
+			go func() {
+				if err := s6.ListenAndServeTLS(config.Server.TlsCertPath, config.Server.TlsKeyPath); err != nil {
+					log.Fatalln(err)
+				}
+			}()
+		}
+	} else {
+		if s4 != nil {
+			fmt.Printf("Listening for HTTP on %s.\n", s4.Addr)
+			go func() {
+				if err := s4.ListenAndServe(); err != nil {
+					log.Fatalln(err)
+				}
+			}()
+		}
+		if s6 != nil {
+			fmt.Printf("Listening for HTTP on %s.\n", s6.Addr)
+			go func() {
+				if err := s6.ListenAndServe(); err != nil {
+					log.Fatalln(err)
+				}
+			}()
+		}
+	}
+
+	<-make(chan interface{}, 1)
 }

 func runDatabaseMigrations() {
--- a/middlewares/authenticate.go
+++ b/middlewares/authenticate.go
@ -19,12 +19,12 @@ import (

 type AuthenticateMiddleware struct {
 	config         *conf.Config
-	userSrvc       *services.UserService
 	cache          *cache.Cache
+	userSrvc       services.IUserService
 	whitelistPaths []string
 }

-func NewAuthenticateMiddleware(userService *services.UserService, whitelistPaths []string) *AuthenticateMiddleware {
+func NewAuthenticateMiddleware(userService services.IUserService, whitelistPaths []string) *AuthenticateMiddleware {
 	return &AuthenticateMiddleware{
 		config:         conf.Get(),
 		userSrvc:       userService,
@ -58,7 +58,7 @@ func (m *AuthenticateMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Reques
 		if strings.HasPrefix(r.URL.Path, "/api") {
 			w.WriteHeader(http.StatusUnauthorized)
 		} else {
-			utils.ClearCookie(w, models.AuthCookieKey, !m.config.Security.InsecureCookies)
+			http.SetCookie(w, m.config.GetClearCookie(models.AuthCookieKey, "/"))
 			http.Redirect(w, r, fmt.Sprintf("%s/?error=unauthorized", m.config.Server.BasePath), http.StatusFound)
 		}
 		return
@ -107,7 +107,7 @@ func (m *AuthenticateMiddleware) tryGetUserByCookie(r *http.Request) (*models.Us
 		return nil, err
 	}

-	if !CheckAndMigratePassword(user, login, m.config.Security.PasswordSalt, m.userSrvc) {
+	if !CheckAndMigratePassword(user, login, m.config.Security.PasswordSalt, &m.userSrvc) {
 		return nil, errors.New("invalid password")
 	}

@ -115,11 +115,11 @@ func (m *AuthenticateMiddleware) tryGetUserByCookie(r *http.Request) (*models.Us
 }

 // migrate old md5-hashed passwords to new salted bcrypt hashes for backwards compatibility
-func CheckAndMigratePassword(user *models.User, login *models.Login, salt string, userServiceRef *services.UserService) bool {
+func CheckAndMigratePassword(user *models.User, login *models.Login, salt string, userServiceRef *services.IUserService) bool {
 	if utils.IsMd5(user.Password) {
 		if utils.CompareMd5(user.Password, login.Password, "") {
 			log.Printf("migrating old md5 password to new bcrypt format for user '%s'", user.ID)
-			userServiceRef.MigrateMd5Password(user, login)
+			(*userServiceRef).MigrateMd5Password(user, login)
 			return true
 		}
 		return false
--- a/middlewares/authenticate_test.go
+++ b/middlewares/authenticate_test.go
@ -0,0 +1,81 @@
+package middlewares
+
+import (
+	"encoding/base64"
+	"fmt"
+	"github.com/muety/wakapi/mocks"
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"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, []string{})
+
+	result, err := sut.tryGetUserByApiKey(mockRequest)
+
+	assert.Nil(t, err)
+	assert.Equal(t, testUser, result)
+}
+
+func TestAuthenticateMiddleware_tryGetUserByApiKey_GetFromCache(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, []string{})
+	sut.cache.SetDefault(testApiKey, testUser)
+
+	result, err := sut.tryGetUserByApiKey(mockRequest)
+
+	assert.Nil(t, err)
+	assert.Equal(t, testUser, result)
+	userServiceMock.AssertNotCalled(t, "GetUserByKey", mock.Anything)
+}
+
+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, []string{})
+
+	result, err := sut.tryGetUserByApiKey(mockRequest)
+
+	assert.Error(t, err)
+	assert.Nil(t, result)
+}
+
+// TODO: somehow test cookie auth function
--- a/migrations/common/custom_post.go
+++ b/migrations/common/custom_post.go
@ -22,7 +22,7 @@ func init() {

 func RunCustomPostMigrations(db *gorm.DB, cfg *config.Config) {
 	for _, m := range customPostMigrations {
-		log.Printf("running migration '%s'\n", m.name)
+		log.Printf("potentially running migration '%s'\n", m.name)
 		if err := m.f(db, cfg); err != nil {
 			log.Fatalf("migration '%s' failed – %v\n", m.name, err)
 		}
--- a/migrations/common/custom_pre.go
+++ b/migrations/common/custom_pre.go
@ -100,7 +100,7 @@ func init() {

 func RunCustomPreMigrations(db *gorm.DB, cfg *config.Config) {
 	for _, m := range customPreMigrations {
-		log.Printf("running migration '%s'\n", m.name)
+		log.Printf("potentially running migration '%s'\n", m.name)
 		if err := m.f(db, cfg); err != nil {
 			log.Fatalf("migration '%s' failed – %v\n", m.name, err)
 		}
--- a/mocks/alias_repository.go
+++ b/mocks/alias_repository.go
@ -0,0 +1,15 @@
+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)
+}
--- a/mocks/alias_service.go
+++ b/mocks/alias_service.go
@ -0,0 +1,24 @@
+package mocks
+
+import (
+	"github.com/stretchr/testify/mock"
+)
+
+type AliasServiceMock struct {
+	mock.Mock
+}
+
+func (m *AliasServiceMock) LoadUserAliases(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) IsInitialized(s string) bool {
+	args := m.Called(s)
+	return args.Bool(0)
+}
--- a/mocks/heartbeat_service.go
+++ b/mocks/heartbeat_service.go
@ -0,0 +1,31 @@
+package mocks
+
+import (
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/mock"
+	"time"
+)
+
+type HeartbeatServiceMock struct {
+	mock.Mock
+}
+
+func (m *HeartbeatServiceMock) InsertBatch(heartbeats []*models.Heartbeat) error {
+	args := m.Called(heartbeats)
+	return 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) DeleteBefore(time time.Time) error {
+	args := m.Called(time)
+	return args.Error(0)
+}
--- a/mocks/summary_repository.go
+++ b/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)
+}
--- a/mocks/user_service.go
+++ b/mocks/user_service.go
@ -0,0 +1,50 @@
+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) GetAll() ([]*models.User, error) {
+	args := m.Called()
+	return args.Get(0).([]*models.User), args.Error(1)
+}
+
+func (m *UserServiceMock) CreateOrGet(signup *models.Signup) (*models.User, bool, error) {
+	args := m.Called(signup)
+	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) 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) MigrateMd5Password(user *models.User, login *models.Login) (*models.User, error) {
+	args := m.Called(user, login)
+	return args.Get(0).(*models.User), args.Error(1)
+}
--- a/models/filters.go
+++ b/models/filters.go
@ -18,13 +18,13 @@ func NewFiltersWith(entity uint8, key string) *Filters {
 	case SummaryProject:
 		return &Filters{Project: key}
 	case SummaryOS:
-		return &Filters{Project: key}
+		return &Filters{OS: key}
 	case SummaryLanguage:
-		return &Filters{Project: key}
+		return &Filters{Language: key}
 	case SummaryEditor:
-		return &Filters{Project: key}
+		return &Filters{Editor: key}
 	case SummaryMachine:
-		return &Filters{Project: key}
+		return &Filters{Machine: key}
 	}
 	return &Filters{}
 }
--- a/models/heartbeat.go
+++ b/models/heartbeat.go
@ -24,7 +24,7 @@ type Heartbeat struct {
 }

 func (h *Heartbeat) Valid() bool {
-	return h.User != nil && h.UserID != "" && h.Time != CustomTime(time.Time{})
+	return h.User != nil && h.UserID != "" && h.User.ID == h.UserID && h.Time != CustomTime(time.Time{})
 }

 func (h *Heartbeat) Augment(languageMappings map[string]string) {
@ -41,3 +41,24 @@ func (h *Heartbeat) Augment(languageMappings map[string]string) {
 	}
 	h.Language, _ = languageMappings[ending]
 }
+
+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
+}
--- a/models/heartbeat_test.go
+++ b/models/heartbeat_test.go
@ -0,0 +1,53 @@
+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",
+	}
+
+	sut := &Heartbeat{
+		Entity:   "~/dev/file.py",
+		Language: "Python",
+	}
+
+	sut.Augment(testMappings)
+
+	assert.Equal(t, "Python3", sut.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))
+}
--- a/models/heartbeats.go
+++ b/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]
+}
--- a/models/shared.go
+++ b/models/shared.go
@ -24,6 +24,11 @@ type KeyStringValue struct {
 	Value string `gorm:"type:text"`
 }

+type Interval struct {
+	Start time.Time
+	End   time.Time
+}
+
 type CustomTime time.Time

 func (j *CustomTime) UnmarshalJSON(b []byte) error {
@ -79,3 +84,7 @@ func (j CustomTime) String() string {
 func (j CustomTime) T() time.Time {
 	return time.Time(j)
 }
+
+func (j CustomTime) Valid() bool {
+	return j.T().Unix() >= 0
+}
--- a/models/summary.go
+++ b/models/summary.go
@ -1,6 +1,7 @@
 package models

 import (
+	"sort"
 	"time"
 )

@ -34,18 +35,20 @@ func Intervals() []string {
 const UnknownSummaryKey = "unknown"

 type Summary struct {
-	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"`
-	ToTime           CustomTime     `json:"to" gorm:"not null; type:timestamp; default:CURRENT_TIMESTAMP; index:idx_time_summary_user"`
-	Projects         []*SummaryItem `json:"projects" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
-	Languages        []*SummaryItem `json:"languages" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
-	Editors          []*SummaryItem `json:"editors" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
-	OperatingSystems []*SummaryItem `json:"operating_systems" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
-	Machines         []*SummaryItem `json:"machines" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	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"`
+	ToTime           CustomTime   `json:"to" gorm:"not null; type:timestamp; default:CURRENT_TIMESTAMP; index:idx_time_summary_user"`
+	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"`
@ -75,16 +78,27 @@ type SummaryParams struct {
 	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]*[]*SummaryItem {
-	return map[uint8]*[]*SummaryItem{
+func (s *Summary) MappedItems() map[uint8]*SummaryItems {
+	return map[uint8]*SummaryItems{
 		SummaryProject:  &s.Projects,
 		SummaryLanguage: &s.Languages,
 		SummaryEditor:   &s.Editors,
@ -178,3 +192,65 @@ func (s *Summary) TotalTimeByFilters(filter *Filters) (timeSum time.Duration) {
 	}
 	return timeSum
 }
+
+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]
+}
--- a/models/summary_test.go
+++ b/models/summary_test.go
@ -0,0 +1,195 @@
+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,
+			},
+		},
+	}
+
+	filters1 := &Filters{Project: "wakapi"}
+	filters2 := &Filters{Project: "wakapi", Language: "Go"} // filters have OR logic
+	filters3 := &Filters{}
+
+	assert.Equal(t, testDuration1, sut.TotalTimeByFilters(filters1))
+	assert.Equal(t, testDuration1+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)
+}
--- a/models/user.go
+++ b/models/user.go
@ -26,6 +26,11 @@ type CredentialsReset struct {
 	PasswordRepeat string `schema:"password_repeat"`
 }

+type TimeByUser struct {
+	User string
+	Time CustomTime
+}
+
 func (c *CredentialsReset) IsValid() bool {
 	return validatePassword(c.PasswordNew) &&
 		c.PasswordNew == c.PasswordRepeat
--- a/models/view/login.go
+++ b/models/view/login.go
@ -0,0 +1,16 @@
+package view
+
+type LoginViewModel struct {
+	Success string
+	Error   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
+}
--- a/repositories/heartbeart.go
+++ b/repositories/heartbeart.go
@ -34,18 +34,14 @@ func (r *HeartbeatRepository) GetAllWithin(from, to time.Time, user *models.User
 	return heartbeats, nil
 }

-// Will return *models.Heartbeat object with only user_id and time fields filled
-func (r *HeartbeatRepository) GetFirstByUsers(userIds []string) ([]*models.Heartbeat, error) {
-	var heartbeats []*models.Heartbeat
-	if err := r.db.
-		Table("heartbeats").
-		Select("user_id, min(time) as time").
-		Where("user_id IN (?)", userIds).
-		Group("user_id").
-		Scan(&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) DeleteBefore(t time.Time) error {
--- a/repositories/repositories.go
+++ b/repositories/repositories.go
@ -0,0 +1,46 @@
+package repositories
+
+import (
+	"github.com/muety/wakapi/models"
+	"time"
+)
+
+type IAliasRepository interface {
+	GetByUser(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)
+	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)
+	GetByApiKey(string) (*models.User, error)
+	GetAll() ([]*models.User, error)
+	InsertOrGet(*models.User) (*models.User, bool, error)
+	Update(*models.User) (*models.User, error)
+	UpdateField(*models.User, string, interface{}) (*models.User, error)
+}
--- a/repositories/summary.go
+++ b/repositories/summary.go
@ -39,17 +39,14 @@ func (r *SummaryRepository) GetByUserWithin(user *models.User, from, to time.Tim
 	return summaries, nil
 }

-// Will return *models.Index objects with only user_id and to_time filled
-func (r *SummaryRepository) GetLatestByUser() ([]*models.Summary, error) {
-	var summaries []*models.Summary
-	if err := r.db.
-		Table("summaries").
-		Select("user_id, max(to_time) as to_time").
-		Group("user_id").
-		Scan(&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 {
--- a/routes/compat/shields/v1/badge.go
+++ b/routes/compat/shields/v1/badge.go
@ -2,7 +2,7 @@ package v1

 import (
 	"github.com/gorilla/mux"
-	config2 "github.com/muety/wakapi/config"
+	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"
@ -18,17 +18,16 @@ const (
 )

 type BadgeHandler struct {
-	userSrvc    *services.UserService
-	summarySrvc *services.SummaryService
-	aliasSrvc   *services.AliasService
-	config      *config2.Config
+	config      *conf.Config
+	userSrvc    services.IUserService
+	summarySrvc services.ISummaryService
 }

-func NewBadgeHandler(summaryService *services.SummaryService, userService *services.UserService) *BadgeHandler {
+func NewBadgeHandler(summaryService services.ISummaryService, userService services.IUserService) *BadgeHandler {
 	return &BadgeHandler{
 		summarySrvc: summaryService,
 		userSrvc:    userService,
-		config:      config2.Get(),
+		config:      conf.Get(),
 	}
 }

@ -97,9 +96,12 @@ func (h *BadgeHandler) loadUserSummary(user *models.User, interval string) (*mod
 		User: user,
 	}

-	summary, err := h.summarySrvc.PostProcessWrapped(
-		h.summarySrvc.Construct(summaryParams.From, summaryParams.To, summaryParams.User, summaryParams.Recompute),
-	)
+	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)
 	if err != nil {
 		return nil, err, http.StatusInternalServerError
 	}
--- a/routes/compat/wakatime/v1/all_time.go
+++ b/routes/compat/wakatime/v1/all_time.go
@ -2,7 +2,7 @@ package v1

 import (
 	"github.com/gorilla/mux"
-	config2 "github.com/muety/wakapi/config"
+	conf "github.com/muety/wakapi/config"
 	"github.com/muety/wakapi/models"
 	v1 "github.com/muety/wakapi/models/compat/wakatime/v1"
 	"github.com/muety/wakapi/services"
@ -13,14 +13,14 @@ import (
 )

 type AllTimeHandler struct {
-	summarySrvc *services.SummaryService
-	config      *config2.Config
+	config      *conf.Config
+	summarySrvc services.ISummaryService
 }

-func NewAllTimeHandler(summaryService *services.SummaryService) *AllTimeHandler {
+func NewAllTimeHandler(summaryService services.ISummaryService) *AllTimeHandler {
 	return &AllTimeHandler{
 		summarySrvc: summaryService,
-		config:      config2.Get(),
+		config:      conf.Get(),
 	}
 }

@ -55,9 +55,12 @@ func (h *AllTimeHandler) loadUserSummary(user *models.User) (*models.Summary, er
 		Recompute: false,
 	}

-	summary, err := h.summarySrvc.PostProcessWrapped(
-		h.summarySrvc.Construct(summaryParams.From, summaryParams.To, summaryParams.User, summaryParams.Recompute), // 'to' is always constant
-	)
+	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)
 	if err != nil {
 		return nil, err, http.StatusInternalServerError
 	}
--- a/routes/compat/wakatime/v1/summaries.go
+++ b/routes/compat/wakatime/v1/summaries.go
@ -3,7 +3,7 @@ package v1
 import (
 	"errors"
 	"github.com/gorilla/mux"
-	config2 "github.com/muety/wakapi/config"
+	conf "github.com/muety/wakapi/config"
 	"github.com/muety/wakapi/models"
 	v1 "github.com/muety/wakapi/models/compat/wakatime/v1"
 	"github.com/muety/wakapi/services"
@ -14,14 +14,14 @@ import (
 )

 type SummariesHandler struct {
-	summarySrvc *services.SummaryService
-	config      *config2.Config
+	config      *conf.Config
+	summarySrvc services.ISummaryService
 }

-func NewSummariesHandler(summaryService *services.SummaryService) *SummariesHandler {
+func NewSummariesHandler(summaryService services.ISummaryService) *SummariesHandler {
 	return &SummariesHandler{
 		summarySrvc: summaryService,
-		config:      config2.Get(),
+		config:      conf.Get(),
 	}
 }

@ -86,9 +86,7 @@ func (h *SummariesHandler) loadUserSummaries(r *http.Request) ([]*models.Summary
 	summaries := make([]*models.Summary, len(intervals))

 	for i, interval := range intervals {
-		summary, err := h.summarySrvc.PostProcessWrapped(
-			h.summarySrvc.Construct(interval[0], interval[1], user, false), // 'to' is always constant
-		)
+		summary, err := h.summarySrvc.Aliased(interval[0], interval[1], user, h.summarySrvc.Retrieve)
 		if err != nil {
 			return nil, err, http.StatusInternalServerError
 		}
--- a/routes/heartbeat.go
+++ b/routes/heartbeat.go
@ -14,11 +14,11 @@ import (

 type HeartbeatHandler struct {
 	config              *conf.Config
-	heartbeatSrvc       *services.HeartbeatService
-	languageMappingSrvc *services.LanguageMappingService
+	heartbeatSrvc       services.IHeartbeatService
+	languageMappingSrvc services.ILanguageMappingService
 }

-func NewHeartbeatHandler(heartbeatService *services.HeartbeatService, languageMappingService *services.LanguageMappingService) *HeartbeatHandler {
+func NewHeartbeatHandler(heartbeatService services.IHeartbeatService, languageMappingService services.ILanguageMappingService) *HeartbeatHandler {
 	return &HeartbeatHandler{
 		config:              conf.Get(),
 		heartbeatSrvc:       heartbeatService,
--- a/routes/home.go
+++ b/routes/home.go
@ -4,28 +4,21 @@ import (
 	"fmt"
 	"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/utils"
 	"net/http"
-	"net/url"
-	"time"
 )

 type HomeHandler struct {
-	config   *conf.Config
-	userSrvc *services.UserService
+	config *conf.Config
 }

 var loginDecoder = schema.NewDecoder()
 var signupDecoder = schema.NewDecoder()

-func NewHomeHandler(userService *services.UserService) *HomeHandler {
+func NewHomeHandler() *HomeHandler {
 	return &HomeHandler{
-		config:   conf.Get(),
-		userSrvc: userService,
+		config: conf.Get(),
 	}
 }

@ -42,129 +35,6 @@ func (h *HomeHandler) GetIndex(w http.ResponseWriter, r *http.Request) {
 	templates[conf.IndexTemplate].Execute(w, h.buildViewModel(r))
 }

-func (h *HomeHandler) 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.IndexTemplate].Execute(w, h.buildViewModel(r).WithError("missing parameters"))
-		return
-	}
-	if err := loginDecoder.Decode(&login, r.PostForm); err != nil {
-		w.WriteHeader(http.StatusBadRequest)
-		templates[conf.IndexTemplate].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.IndexTemplate].Execute(w, h.buildViewModel(r).WithError("resource not found"))
-		return
-	}
-
-	// TODO: depending on middleware package here is a hack
-	if !middlewares.CheckAndMigratePassword(user, &login, h.config.Security.PasswordSalt, h.userSrvc) {
-		w.WriteHeader(http.StatusUnauthorized)
-		templates[conf.IndexTemplate].Execute(w, h.buildViewModel(r).WithError("invalid credentials"))
-		return
-	}
-
-	encoded, err := h.config.Security.SecureCookie.Encode(models.AuthCookieKey, login)
-	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		templates[conf.IndexTemplate].Execute(w, h.buildViewModel(r).WithError("internal server error"))
-		return
-	}
-
-	user.LastLoggedInAt = models.CustomTime(time.Now())
-	h.userSrvc.Update(user)
-
-	cookie := &http.Cookie{
-		Name:     models.AuthCookieKey,
-		Value:    encoded,
-		Path:     "/",
-		Secure:   !h.config.Security.InsecureCookies,
-		HttpOnly: true,
-	}
-	http.SetCookie(w, cookie)
-	http.Redirect(w, r, fmt.Sprintf("%s/summary", h.config.Server.BasePath), http.StatusFound)
-}
-
-func (h *HomeHandler) PostLogout(w http.ResponseWriter, r *http.Request) {
-	if h.config.IsDev() {
-		loadTemplates()
-	}
-
-	utils.ClearCookie(w, models.AuthCookieKey, !h.config.Security.InsecureCookies)
-	http.Redirect(w, r, fmt.Sprintf("%s/", h.config.Server.BasePath), http.StatusFound)
-}
-
-func (h *HomeHandler) 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 *HomeHandler) PostSignup(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 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
-	}
-
-	_, created, err := h.userSrvc.CreateOrGet(&signup)
-	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
-	}
-
-	msg := url.QueryEscape("account created successfully")
-	http.Redirect(w, r, fmt.Sprintf("%s/?success=%s", h.config.Server.BasePath, msg), http.StatusFound)
-}
-
 func (h *HomeHandler) buildViewModel(r *http.Request) *view.HomeViewModel {
 	return &view.HomeViewModel{
 		Success: r.URL.Query().Get("success"),
--- a/routes/imprint.go
+++ b/routes/imprint.go
@ -10,10 +10,10 @@ import (

 type ImprintHandler struct {
 	config       *conf.Config
-	keyValueSrvc *services.KeyValueService
+	keyValueSrvc services.IKeyValueService
 }

-func NewImprintHandler(keyValueService *services.KeyValueService) *ImprintHandler {
+func NewImprintHandler(keyValueService services.IKeyValueService) *ImprintHandler {
 	return &ImprintHandler{
 		config:       conf.Get(),
 		keyValueSrvc: keyValueService,
--- a/routes/login.go
+++ b/routes/login.go
@ -0,0 +1,159 @@
+package routes
+
+import (
+	"fmt"
+	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"
+	"net/http"
+	"time"
+)
+
+type LoginHandler struct {
+	config   *conf.Config
+	userSrvc services.IUserService
+}
+
+func NewLoginHandler(userService services.IUserService) *LoginHandler {
+	return &LoginHandler{
+		config:   conf.Get(),
+		userSrvc: userService,
+	}
+}
+
+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
+	}
+
+	// TODO: depending on middleware package here is a hack
+	if !middlewares.CheckAndMigratePassword(user, &login, h.config.Security.PasswordSalt, &h.userSrvc) {
+		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)
+	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 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
+	}
+
+	_, created, err := h.userSrvc.CreateOrGet(&signup)
+	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) buildViewModel(r *http.Request) *view.LoginViewModel {
+	return &view.LoginViewModel{
+		Success: r.URL.Query().Get("success"),
+		Error:   r.URL.Query().Get("error"),
+	}
+}
--- a/routes/routes.go
+++ b/routes/routes.go
@ -10,7 +10,7 @@ import (
 	"strings"
 )

-func init() {
+func Init() {
 	loadTemplates()
 }

--- a/routes/settings.go
+++ b/routes/settings.go
@ -10,21 +10,20 @@ import (
 	"github.com/muety/wakapi/utils"
 	"log"
 	"net/http"
-	"net/url"
 	"strconv"
 )

 type SettingsHandler struct {
 	config              *conf.Config
-	userSrvc            *services.UserService
-	summarySrvc         *services.SummaryService
-	aggregationSrvc     *services.AggregationService
-	languageMappingSrvc *services.LanguageMappingService
+	userSrvc            services.IUserService
+	summarySrvc         services.ISummaryService
+	aggregationSrvc     services.IAggregationService
+	languageMappingSrvc services.ILanguageMappingService
 }

 var credentialsDecoder = schema.NewDecoder()

-func NewSettingsHandler(userService *services.UserService, summaryService *services.SummaryService, aggregationService *services.AggregationService, languageMappingService *services.LanguageMappingService) *SettingsHandler {
+func NewSettingsHandler(userService services.IUserService, summaryService services.ISummaryService, aggregationService services.IAggregationService, languageMappingService services.ILanguageMappingService) *SettingsHandler {
 	return &SettingsHandler{
 		config:              conf.Get(),
 		summarySrvc:         summaryService,
@ -99,15 +98,7 @@ func (h *SettingsHandler) PostCredentials(w http.ResponseWriter, r *http.Request
 		return
 	}

-	cookie := &http.Cookie{
-		Name:     models.AuthCookieKey,
-		Value:    encoded,
-		Path:     "/",
-		Secure:   !h.config.Security.InsecureCookies,
-		HttpOnly: true,
-	}
-	http.SetCookie(w, cookie)
-
+	http.SetCookie(w, h.config.CreateCookie(models.AuthCookieKey, encoded, "/"))
 	templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r).WithSuccess("password was updated successfully"))
 }

@ -178,7 +169,7 @@ func (h *SettingsHandler) PostResetApiKey(w http.ResponseWriter, r *http.Request
 		return
 	}

-	msg := url.QueryEscape(fmt.Sprintf("your new api key is: %s", user.ApiKey))
+	msg := fmt.Sprintf("your new api key is: %s", user.ApiKey)
 	templates[conf.SettingsTemplate].Execute(w, h.buildViewModel(r).WithSuccess(msg))
 }

--- a/routes/summary.go
+++ b/routes/summary.go
@ -10,11 +10,11 @@ import (
 )

 type SummaryHandler struct {
-	summarySrvc *services.SummaryService
 	config      *conf.Config
+	summarySrvc services.ISummaryService
 }

-func NewSummaryHandler(summaryService *services.SummaryService) *SummaryHandler {
+func NewSummaryHandler(summaryService services.ISummaryService) *SummaryHandler {
 	return &SummaryHandler{
 		summarySrvc: summaryService,
 		config:      conf.Get(),
@ -59,7 +59,7 @@ func (h *SummaryHandler) GetIndex(w http.ResponseWriter, r *http.Request) {

 	vm := models.SummaryViewModel{
 		Summary:        summary,
-		LanguageColors: utils.FilterLanguageColors(h.config.App.LanguageColors, summary),
+		LanguageColors: utils.FilterLanguageColors(h.config.App.GetLanguageColors(), summary),
 		ApiKey:         user.ApiKey,
 	}

@ -72,9 +72,12 @@ func (h *SummaryHandler) loadUserSummary(r *http.Request) (*models.Summary, erro
 		return nil, err, http.StatusBadRequest
 	}

-	summary, err := h.summarySrvc.PostProcessWrapped(
-		h.summarySrvc.Construct(summaryParams.From, summaryParams.To, summaryParams.User, summaryParams.Recompute), // 'to' is always constant
-	)
+	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)
 	if err != nil {
 		return nil, err, http.StatusInternalServerError
 	}
--- a/services/aggregation.go
+++ b/services/aggregation.go
@ -6,7 +6,7 @@ import (
 	"runtime"
 	"time"

-	"github.com/jasonlvhit/gocron"
+	"github.com/go-co-op/gocron"
 	"github.com/muety/wakapi/models"
 )

@ -16,12 +16,12 @@ const (

 type AggregationService struct {
 	config           *config.Config
-	userService      *UserService
-	summaryService   *SummaryService
-	heartbeatService *HeartbeatService
+	userService      IUserService
+	summaryService   ISummaryService
+	heartbeatService IHeartbeatService
 }

-func NewAggregationService(userService *UserService, summaryService *SummaryService, heartbeatService *HeartbeatService) *AggregationService {
+func NewAggregationService(userService IUserService, summaryService ISummaryService, heartbeatService IHeartbeatService) *AggregationService {
 	return &AggregationService{
 		config:           config.Get(),
 		userService:      userService,
@ -43,8 +43,9 @@ func (srv *AggregationService) Schedule() {
 		log.Fatalf("failed to run aggregation jobs: %v\n", err)
 	}

-	gocron.Every(1).Day().At(srv.config.App.AggregationTime).Do(srv.Run, nil)
-	<-gocron.Start()
+	s := gocron.NewScheduler(time.Local)
+	s.Every(1).Day().At(srv.config.App.AggregationTime).Do(srv.Run, map[string]bool{})
+	s.StartBlocking()
 }

 func (srv *AggregationService) Run(userIds map[string]bool) error {
@ -59,12 +60,19 @@ func (srv *AggregationService) Run(userIds map[string]bool) error {
 		go srv.persistWorker(summaries)
 	}

+	// don't leak open channels
+	go func(c1 chan *AggregationJob, c2 chan *models.Summary) {
+		defer close(c1)
+		defer close(c2)
+		time.Sleep(1 * time.Hour)
+	}(jobs, summaries)
+
 	return srv.trigger(jobs, userIds)
 }

 func (srv *AggregationService) summaryWorker(jobs <-chan *AggregationJob, summaries chan<- *models.Summary) {
 	for job := range jobs {
-		if summary, err := srv.summaryService.Construct(job.From, job.To, &models.User{ID: job.UserID}, true); err != nil {
+		if summary, err := srv.summaryService.Summarize(job.From, job.To, &models.User{ID: job.UserID}); err != nil {
 			log.Printf("Failed to generate summary (%v, %v, %s) – %v.\n", job.From, job.To, job.UserID, err)
 		} else {
 			log.Printf("Successfully generated summary (%v, %v, %s).\n", job.From, job.To, job.UserID)
@ -99,57 +107,59 @@ func (srv *AggregationService) trigger(jobs chan<- *AggregationJob, userIds map[
 		users = allUsers
 	}

-	latestSummaries, err := srv.summaryService.GetLatestByUser()
+	// Get a map from user ids to the time of their latest summary or nil if none exists yet
+	lastUserSummaryTimes, err := srv.summaryService.GetLatestByUser()
 	if err != nil {
 		log.Println(err)
 		return err
 	}

-	userSummaryTimes := make(map[string]time.Time)
-	for _, s := range latestSummaries {
-		userSummaryTimes[s.UserID] = s.ToTime.T()
+	// Get a map from user ids to the time of their earliest heartbeats or nil if none exists yet
+	firstUserHeartbeatTimes, err := srv.heartbeatService.GetFirstByUsers()
+	if err != nil {
+		log.Println(err)
+		return err
 	}

-	missingUserIDs := make([]string, 0)
-	for _, u := range users {
-		if _, ok := userSummaryTimes[u.ID]; !ok {
-			missingUserIDs = append(missingUserIDs, u.ID)
+	// Build actual lookup table from it
+	firstUserHeartbeatLookup := make(map[string]models.CustomTime)
+	for _, e := range firstUserHeartbeatTimes {
+		firstUserHeartbeatLookup[e.User] = e.Time
+	}
+
+	// Generate summary aggregation jobs
+	for _, e := range lastUserSummaryTimes {
+		if e.Time.Valid() {
+			// Case 1: User has aggregated summaries already
+			// -> Spawn jobs to create summaries from their latest aggregation to now
+			generateUserJobs(e.User, e.Time.T(), jobs)
+		} else if t := firstUserHeartbeatLookup[e.User]; t.Valid() {
+			// Case 2: User has no aggregated summaries, yet, but has heartbeats
+			// -> Spawn jobs to create summaries from their first heartbeat to now
+			generateUserJobs(e.User, t.T(), jobs)
 		}
-	}
-
-	firstHeartbeats, err := srv.heartbeatService.GetFirstUserHeartbeats(missingUserIDs)
-	if err != nil {
-		log.Println(err)
-		return err
-	}
-
-	for id, t := range userSummaryTimes {
-		generateUserJobs(id, t, jobs)
-	}
-
-	for _, h := range firstHeartbeats {
-		generateUserJobs(h.UserID, time.Time(h.Time), jobs)
+		// Case 3: User doesn't have heartbeats at all
+		// -> Nothing to do
 	}

 	return nil
 }

-func generateUserJobs(userId string, lastAggregation time.Time, jobs chan<- *AggregationJob) {
-	var from, to time.Time
+func generateUserJobs(userId string, from time.Time, jobs chan<- *AggregationJob) {
+	var to time.Time
+
+	// Go to next day of either user's first heartbeat or latest aggregation
+	from.Add(-1 * time.Second)
+	from = time.Date(
+		from.Year(),
+		from.Month(),
+		from.Day()+aggregateIntervalDays,
+		0, 0, 0, 0,
+		from.Location(),
+	)
+
+	// Iteratively aggregate per-day summaries until end of yesterday is reached
 	end := getStartOfToday().Add(-1 * time.Second)
-
-	if lastAggregation.Hour() == 0 {
-		from = lastAggregation
-	} else {
-		from = time.Date(
-			lastAggregation.Year(),
-			lastAggregation.Month(),
-			lastAggregation.Day()+aggregateIntervalDays,
-			0, 0, 0, 0,
-			lastAggregation.Location(),
-		)
-	}
-
 	for from.Before(end) && to.Before(end) {
 		to = time.Date(
 			from.Year(),
--- a/services/alias.go
+++ b/services/alias.go
@ -10,10 +10,10 @@ import (

 type AliasService struct {
 	config     *config.Config
-	repository *repositories.AliasRepository
+	repository repositories.IAliasRepository
 }

-func NewAliasService(aliasRepo *repositories.AliasRepository) *AliasService {
+func NewAliasService(aliasRepo repositories.IAliasRepository) *AliasService {
 	return &AliasService{
 		config:     config.Get(),
 		repository: aliasRepo,
--- a/services/alias_test.go
+++ b/services/alias_test.go
@ -0,0 +1,63 @@
+package services
+
+import (
+	"github.com/muety/wakapi/mocks"
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/suite"
+	"testing"
+)
+
+type AliasServiceTestSuite struct {
+	suite.Suite
+	TestUserId      string
+	AliasRepository *mocks.AliasRepositoryMock
+}
+
+func (suite *AliasServiceTestSuite) SetupSuite() {
+	suite.TestUserId = "johndoe@example.org"
+
+	aliases := []*models.Alias{
+		{
+			Type:   models.SummaryProject,
+			UserID: suite.TestUserId,
+			Key:    "wakapi",
+			Value:  "wakapi-mobile",
+		},
+	}
+
+	aliasRepoMock := new(mocks.AliasRepositoryMock)
+	aliasRepoMock.On("GetByUser", suite.TestUserId).Return(aliases, nil)
+	aliasRepoMock.On("GetByUser", mock.AnythingOfType("string")).Return([]*models.Alias{}, assert.AnError)
+
+	suite.AliasRepository = aliasRepoMock
+}
+
+func TestAliasServiceTestSuite(t *testing.T) {
+	suite.Run(t, new(AliasServiceTestSuite))
+}
+
+func (suite *AliasServiceTestSuite) TestAliasService_GetAliasOrDefault() {
+	sut := NewAliasService(suite.AliasRepository)
+
+	result1, err1 := sut.GetAliasOrDefault(suite.TestUserId, models.SummaryProject, "wakapi-mobile")
+	result2, err2 := sut.GetAliasOrDefault(suite.TestUserId, models.SummaryProject, "wakapi")
+	result3, err3 := sut.GetAliasOrDefault(suite.TestUserId, models.SummaryProject, "anchr")
+
+	assert.Equal(suite.T(), "wakapi", result1)
+	assert.Nil(suite.T(), err1)
+	assert.Equal(suite.T(), "wakapi", result2)
+	assert.Nil(suite.T(), err2)
+	assert.Equal(suite.T(), "anchr", result3)
+	assert.Nil(suite.T(), err3)
+}
+
+func (suite *AliasServiceTestSuite) TestAliasService_GetAliasOrDefault_ErrorOnNonExistingUser() {
+	sut := NewAliasService(suite.AliasRepository)
+
+	result, err := sut.GetAliasOrDefault("nonexisting", models.SummaryProject, "wakapi-mobile")
+
+	assert.Empty(suite.T(), result)
+	assert.Error(suite.T(), err)
+}
--- a/services/heartbeat.go
+++ b/services/heartbeat.go
@ -8,17 +8,13 @@ import (
 	"github.com/muety/wakapi/models"
 )

-const (
-	cleanUpInterval = time.Duration(aggregateIntervalDays) * 2 * 24 * time.Hour
-)
-
 type HeartbeatService struct {
 	config              *config.Config
-	repository          *repositories.HeartbeatRepository
-	languageMappingSrvc *LanguageMappingService
+	repository          repositories.IHeartbeatRepository
+	languageMappingSrvc ILanguageMappingService
 }

-func NewHeartbeatService(heartbeatRepo *repositories.HeartbeatRepository, languageMappingService *LanguageMappingService) *HeartbeatService {
+func NewHeartbeatService(heartbeatRepo repositories.IHeartbeatRepository, languageMappingService ILanguageMappingService) *HeartbeatService {
 	return &HeartbeatService{
 		config:              config.Get(),
 		repository:          heartbeatRepo,
@ -38,8 +34,8 @@ func (srv *HeartbeatService) GetAllWithin(from, to time.Time, user *models.User)
 	return srv.augmented(heartbeats, user.ID)
 }

-func (srv *HeartbeatService) GetFirstUserHeartbeats(userIds []string) ([]*models.Heartbeat, error) {
-	return srv.repository.GetFirstByUsers(userIds)
+func (srv *HeartbeatService) GetFirstByUsers() ([]*models.TimeByUser, error) {
+	return srv.repository.GetFirstByUsers()
 }

 func (srv *HeartbeatService) DeleteBefore(t time.Time) error {
--- a/services/key_value.go
+++ b/services/key_value.go
@ -8,10 +8,10 @@ import (

 type KeyValueService struct {
 	config     *config.Config
-	repository *repositories.KeyValueRepository
+	repository repositories.IKeyValueRepository
 }

-func NewKeyValueService(keyValueRepo *repositories.KeyValueRepository) *KeyValueService {
+func NewKeyValueService(keyValueRepo repositories.IKeyValueRepository) *KeyValueService {
 	return &KeyValueService{
 		config:     config.Get(),
 		repository: keyValueRepo,
--- a/services/language_mapping.go
+++ b/services/language_mapping.go
@ -10,11 +10,11 @@ import (

 type LanguageMappingService struct {
 	config     *config.Config
-	repository *repositories.LanguageMappingRepository
 	cache      *cache.Cache
+	repository repositories.ILanguageMappingRepository
 }

-func NewLanguageMappingService(languageMappingsRepo *repositories.LanguageMappingRepository) *LanguageMappingService {
+func NewLanguageMappingService(languageMappingsRepo repositories.ILanguageMappingRepository) *LanguageMappingService {
 	return &LanguageMappingService{
 		config:     config.Get(),
 		repository: languageMappingsRepo,
@ -68,6 +68,7 @@ func (srv *LanguageMappingService) Delete(mapping *models.LanguageMapping) error
 	return err
 }

-func (srv LanguageMappingService) getServerMappings() map[string]string {
-	return srv.config.App.CustomLanguages
+func (srv *LanguageMappingService) getServerMappings() map[string]string {
+	// https://dave.cheney.net/2017/04/30/if-a-map-isnt-a-reference-variable-what-is-it
+	return srv.config.App.GetCustomLanguages()
 }
--- a/services/services.go
+++ b/services/services.go
@ -0,0 +1,58 @@
+package services
+
+import (
+	"github.com/muety/wakapi/models"
+	"time"
+)
+
+type IAggregationService interface {
+	Schedule()
+	Run(map[string]bool) error
+}
+
+type IAliasService interface {
+	LoadUserAliases(string) error
+	GetAliasOrDefault(string, uint8, string) (string, error)
+	IsInitialized(string) bool
+}
+
+type IHeartbeatService interface {
+	InsertBatch([]*models.Heartbeat) error
+	GetAllWithin(time.Time, time.Time, *models.User) ([]*models.Heartbeat, error)
+	GetFirstByUsers() ([]*models.TimeByUser, error)
+	DeleteBefore(time.Time) error
+}
+
+type IKeyValueService interface {
+	GetString(string) (*models.KeyStringValue, error)
+	PutString(*models.KeyStringValue) error
+	DeleteString(string) error
+}
+
+type ILanguageMappingService interface {
+	GetById(uint) (*models.LanguageMapping, error)
+	GetByUser(string) ([]*models.LanguageMapping, error)
+	ResolveByUser(string) (map[string]string, error)
+	Create(*models.LanguageMapping) (*models.LanguageMapping, error)
+	Delete(mapping *models.LanguageMapping) error
+}
+
+type ISummaryService interface {
+	Aliased(time.Time, time.Time, *models.User, SummaryRetriever) (*models.Summary, error)
+	Retrieve(time.Time, time.Time, *models.User) (*models.Summary, error)
+	Summarize(time.Time, time.Time, *models.User) (*models.Summary, error)
+	GetLatestByUser() ([]*models.TimeByUser, error)
+	DeleteByUser(string) error
+	Insert(*models.Summary) error
+}
+
+type IUserService interface {
+	GetUserById(string) (*models.User, error)
+	GetUserByKey(string) (*models.User, error)
+	GetAll() ([]*models.User, error)
+	CreateOrGet(*models.Signup) (*models.User, bool, error)
+	Update(*models.User) (*models.User, error)
+	ResetApiKey(*models.User) (*models.User, error)
+	ToggleBadges(*models.User) (*models.User, error)
+	MigrateMd5Password(*models.User, *models.Login) (*models.User, error)
+}
--- a/services/summary.go
+++ b/services/summary.go
@ -4,14 +4,12 @@ import (
 	"crypto/md5"
 	"errors"
 	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
 	"github.com/muety/wakapi/repositories"
 	"github.com/patrickmn/go-cache"
 	"math"
 	"sort"
-	"strconv"
 	"time"
-
-	"github.com/muety/wakapi/models"
 )

 const HeartbeatDiffThreshold = 2 * time.Minute
@ -19,12 +17,14 @@ const HeartbeatDiffThreshold = 2 * time.Minute
 type SummaryService struct {
 	config           *config.Config
 	cache            *cache.Cache
-	repository       *repositories.SummaryRepository
-	heartbeatService *HeartbeatService
-	aliasService     *AliasService
+	repository       repositories.ISummaryRepository
+	heartbeatService IHeartbeatService
+	aliasService     IAliasService
 }

-func NewSummaryService(summaryRepo *repositories.SummaryRepository, heartbeatService *HeartbeatService, aliasService *AliasService) *SummaryService {
+type SummaryRetriever func(f, t time.Time, u *models.User) (*models.Summary, error)
+
+func NewSummaryService(summaryRepo repositories.ISummaryRepository, heartbeatService IHeartbeatService, aliasService IAliasService) *SummaryService {
 	return &SummaryService{
 		config:           config.Get(),
 		cache:            cache.New(24*time.Hour, 24*time.Hour),
@ -34,60 +34,98 @@ func NewSummaryService(summaryRepo *repositories.SummaryRepository, heartbeatSer
 	}
 }

-type Interval struct {
-	Start time.Time
-	End   time.Time
-}
+// Public summary generation methods

-// TODO: simplify!
-func (srv *SummaryService) Construct(from, to time.Time, user *models.User, recompute bool) (*models.Summary, error) {
-	var existingSummaries []*models.Summary
-	var cacheKey string
-
-	if recompute {
-		existingSummaries = make([]*models.Summary, 0)
-	} else {
-		cacheKey = getHash([]time.Time{from, to}, user)
-		if result, ok := srv.cache.Get(cacheKey); ok {
-			return result.(*models.Summary), nil
-		}
-		summaries, err := srv.GetByUserWithin(user, from, to)
-		if err != nil {
-			return nil, err
-		}
-		existingSummaries = summaries
+func (srv *SummaryService) Aliased(from, to time.Time, user *models.User, f SummaryRetriever) (*models.Summary, error) {
+	// Check cache
+	cacheKey := srv.getHash(from.String(), to.String(), user.ID, "--aliased")
+	if cacheResult, ok := srv.cache.Get(cacheKey); ok {
+		return cacheResult.(*models.Summary), nil
 	}

-	missingIntervals := getMissingIntervals(from, to, existingSummaries)
+	// Wrap alias resolution
+	resolve := func(t uint8, k string) string {
+		s, _ := srv.aliasService.GetAliasOrDefault(user.ID, t, k)
+		return s
+	}

-	heartbeats := make([]*models.Heartbeat, 0)
+	// Initialize alias resolver service
+	if err := srv.aliasService.LoadUserAliases(user.ID); err != nil {
+		return nil, err
+	}
+
+	// Get actual summary
+	s, err := f(from, to, user)
+	if err != nil {
+		return nil, err
+	}
+
+	// Post-process summary and cache it
+	summary := s.WithResolvedAliases(resolve)
+	srv.cache.SetDefault(cacheKey, summary)
+	return summary.Sorted(), nil
+}
+
+func (srv *SummaryService) Retrieve(from, to time.Time, user *models.User) (*models.Summary, error) {
+	// Check cache
+	cacheKey := srv.getHash(from.String(), to.String(), user.ID)
+	if cacheResult, ok := srv.cache.Get(cacheKey); ok {
+		return cacheResult.(*models.Summary), nil
+	}
+
+	// Get all already existing, pre-generated summaries that fall into the requested interval
+	summaries, err := srv.repository.GetByUserWithin(user, from, to)
+	if err != nil {
+		return nil, err
+	}
+
+	// Generate missing slots (especially before and after existing summaries) from raw heartbeats
+	missingIntervals := srv.getMissingIntervals(from, to, summaries)
 	for _, interval := range missingIntervals {
-		hb, err := srv.heartbeatService.GetAllWithin(interval.Start, interval.End, user)
-		if err != nil {
+		if s, err := srv.Summarize(interval.Start, interval.End, user); err == nil {
+			summaries = append(summaries, s)
+		} else {
 			return nil, err
 		}
-		heartbeats = append(heartbeats, hb...)
+	}
+
+	// Merge existing and newly generated summary snippets
+	summary, err := srv.mergeSummaries(summaries)
+	if err != nil {
+		return nil, err
+	}
+
+	// Cache 'em
+	srv.cache.SetDefault(cacheKey, summary)
+	return summary.Sorted(), nil
+}
+
+func (srv *SummaryService) Summarize(from, to time.Time, user *models.User) (*models.Summary, error) {
+	// Initialize and fetch data
+	var heartbeats models.Heartbeats
+	if rawHeartbeats, err := srv.heartbeatService.GetAllWithin(from, to, user); err == nil {
+		heartbeats = rawHeartbeats
+	} else {
+		return nil, err
 	}

 	types := models.SummaryTypes()

+	typedAggregations := make(chan models.SummaryItemContainer)
+	defer close(typedAggregations)
+	for _, t := range types {
+		go srv.aggregateBy(heartbeats, t, typedAggregations)
+	}
+
+	// Aggregate raw heartbeats by types in parallel and collect them
 	var projectItems []*models.SummaryItem
 	var languageItems []*models.SummaryItem
 	var editorItems []*models.SummaryItem
 	var osItems []*models.SummaryItem
 	var machineItems []*models.SummaryItem

-	if err := srv.aliasService.LoadUserAliases(user.ID); err != nil {
-		return nil, err
-	}
-
-	c := make(chan models.SummaryItemContainer)
-	for _, t := range types {
-		go srv.aggregateBy(heartbeats, t, user, c)
-	}
-
 	for i := 0; i < len(types); i++ {
-		item := <-c
+		item := <-typedAggregations
 		switch item.Type {
 		case models.SummaryProject:
 			projectItems = item.Items
@ -101,31 +139,16 @@ func (srv *SummaryService) Construct(from, to time.Time, user *models.User, reco
 			machineItems = item.Items
 		}
 	}
-	close(c)

-	realFrom, realTo := from, to
-	if len(existingSummaries) > 0 {
-		realFrom = existingSummaries[0].FromTime.T()
-		realTo = existingSummaries[len(existingSummaries)-1].ToTime.T()
-
-		for _, summary := range existingSummaries {
-			summary.FillUnknown()
-		}
-	}
-	if len(heartbeats) > 0 {
-		t1, t2 := time.Time(heartbeats[0].Time), time.Time(heartbeats[len(heartbeats)-1].Time)
-		if t1.After(realFrom) && t1.Before(time.Date(realFrom.Year(), realFrom.Month(), realFrom.Day()+1, 0, 0, 0, 0, realFrom.Location())) {
-			realFrom = t1
-		}
-		if t2.Before(realTo) && t2.After(time.Date(realTo.Year(), realTo.Month(), realTo.Day()-1, 0, 0, 0, 0, realTo.Location())) {
-			realTo = t2
-		}
+	if heartbeats.Len() > 0 {
+		from = time.Time(heartbeats.First().Time)
+		to = time.Time(heartbeats.Last().Time)
 	}

-	aggregatedSummary := &models.Summary{
+	summary := &models.Summary{
 		UserID:           user.ID,
-		FromTime:         models.CustomTime(realFrom),
-		ToTime:           models.CustomTime(realTo),
+		FromTime:         models.CustomTime(from),
+		ToTime:           models.CustomTime(to),
 		Projects:         projectItems,
 		Languages:        languageItems,
 		Editors:          editorItems,
@ -133,123 +156,32 @@ func (srv *SummaryService) Construct(from, to time.Time, user *models.User, reco
 		Machines:         machineItems,
 	}

-	allSummaries := []*models.Summary{aggregatedSummary}
-	allSummaries = append(allSummaries, existingSummaries...)
+	//summary.FillUnknown()

-	summary, err := mergeSummaries(allSummaries)
-	if err != nil {
-		return nil, err
-	}
-
-	if cacheKey != "" {
-		srv.cache.SetDefault(cacheKey, summary)
-	}
-
-	return summary, nil
+	return summary.Sorted(), nil
 }

-func (srv *SummaryService) PostProcessWrapped(summary *models.Summary, err error) (*models.Summary, error) {
-	if err != nil {
-		return nil, err
-	}
-	return srv.PostProcess(summary), nil
-}
+// CRUD methods

-func (srv *SummaryService) PostProcess(summary *models.Summary) *models.Summary {
-	updatedSummary := &models.Summary{
-		ID:       summary.ID,
-		UserID:   summary.UserID,
-		FromTime: summary.FromTime,
-		ToTime:   summary.ToTime,
-	}
-
-	processAliases := func(origin []*models.SummaryItem) []*models.SummaryItem {
-		target := make([]*models.SummaryItem, 0)
-
-		findItem := func(key string) *models.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, _ := srv.aliasService.GetAliasOrDefault(summary.UserID, 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, _ := srv.aliasService.GetAliasOrDefault(summary.UserID, item.Type, item.Key); key != item.Key {
-				if targetItem := findItem(key); targetItem != nil {
-					targetItem.Total += item.Total
-				} else {
-					target = append(target, &models.SummaryItem{
-						ID:        item.ID,
-						SummaryID: item.SummaryID,
-						Type:      item.Type,
-						Key:       key,
-						Total:     item.Total,
-					})
-				}
-			}
-		}
-
-		return target
-	}
-
-	// Resolve aliases
-	updatedSummary.Projects = processAliases(summary.Projects)
-	updatedSummary.Editors = processAliases(summary.Editors)
-	updatedSummary.Languages = processAliases(summary.Languages)
-	updatedSummary.OperatingSystems = processAliases(summary.OperatingSystems)
-	updatedSummary.Machines = processAliases(summary.Machines)
-
-	return updatedSummary
-}
-
-func (srv *SummaryService) Insert(summary *models.Summary) error {
-	return srv.repository.Insert(summary)
-}
-
-func (srv *SummaryService) GetByUserWithin(user *models.User, from, to time.Time) ([]*models.Summary, error) {
-	return srv.repository.GetByUserWithin(user, from, to)
-}
-
-// Will return *models.Index objects with only user_id and to_time filled
-func (srv *SummaryService) GetLatestByUser() ([]*models.Summary, error) {
-	return srv.repository.GetLatestByUser()
+func (srv *SummaryService) GetLatestByUser() ([]*models.TimeByUser, error) {
+	return srv.repository.GetLastByUser()
 }

 func (srv *SummaryService) DeleteByUser(userId string) error {
 	return srv.repository.DeleteByUser(userId)
 }

-func (srv *SummaryService) aggregateBy(heartbeats []*models.Heartbeat, summaryType uint8, user *models.User, c chan models.SummaryItemContainer) {
+func (srv *SummaryService) Insert(summary *models.Summary) error {
+	return srv.repository.Insert(summary)
+}
+
+// Private summary generation and utility methods
+
+func (srv *SummaryService) aggregateBy(heartbeats []*models.Heartbeat, summaryType uint8, c chan models.SummaryItemContainer) {
 	durations := make(map[string]time.Duration)

 	for i, h := range heartbeats {
-		var key string
-		switch summaryType {
-		case models.SummaryProject:
-			key = h.Project
-		case models.SummaryEditor:
-			key = h.Editor
-		case models.SummaryLanguage:
-			key = h.Language
-		case models.SummaryOS:
-			key = h.OperatingSystem
-		case models.SummaryMachine:
-			key = h.Machine
-		}
-
-		if key == "" {
-			key = models.UnknownSummaryKey
-		}
+		key := h.GetKey(summaryType)

 		if _, ok := durations[key]; !ok {
 			durations[key] = time.Duration(0)
@ -287,43 +219,7 @@ func (srv *SummaryService) aggregateBy(heartbeats []*models.Heartbeat, summaryTy
 	c <- models.SummaryItemContainer{Type: summaryType, Items: items}
 }

-func getMissingIntervals(from, to time.Time, existingSummaries []*models.Summary) []*Interval {
-	if len(existingSummaries) == 0 {
-		return []*Interval{{from, to}}
-	}
-
-	intervals := make([]*Interval, 0)
-
-	// Pre
-	if from.Before(existingSummaries[0].FromTime.T()) {
-		intervals = append(intervals, &Interval{from, existingSummaries[0].FromTime.T()})
-	}
-
-	// Between
-	for i := 0; i < len(existingSummaries)-1; i++ {
-		t1, t2 := existingSummaries[i].ToTime.T(), existingSummaries[i+1].FromTime.T()
-		if t1.Equal(t2) {
-			continue
-		}
-
-		// round to end of day / start of day, assuming that summaries are always generated on a per-day basis
-		td1 := time.Date(t1.Year(), t1.Month(), t1.Day()+1, 0, 0, 0, 0, t1.Location())
-		td2 := time.Date(t2.Year(), t2.Month(), t2.Day(), 0, 0, 0, 0, t2.Location())
-		// one or more day missing in between?
-		if td1.Before(td2) {
-			intervals = append(intervals, &Interval{existingSummaries[i].ToTime.T(), existingSummaries[i+1].FromTime.T()})
-		}
-	}
-
-	// Post
-	if to.After(existingSummaries[len(existingSummaries)-1].ToTime.T()) {
-		intervals = append(intervals, &Interval{existingSummaries[len(existingSummaries)-1].ToTime.T(), to})
-	}
-
-	return intervals
-}
-
-func mergeSummaries(summaries []*models.Summary) (*models.Summary, error) {
+func (srv *SummaryService) mergeSummaries(summaries []*models.Summary) (*models.Summary, error) {
 	if len(summaries) < 1 {
 		return nil, errors.New("no summaries given")
 	}
@ -353,11 +249,11 @@ func mergeSummaries(summaries []*models.Summary) (*models.Summary, error) {
 			maxTime = s.ToTime.T()
 		}

-		finalSummary.Projects = mergeSummaryItems(finalSummary.Projects, s.Projects)
-		finalSummary.Languages = mergeSummaryItems(finalSummary.Languages, s.Languages)
-		finalSummary.Editors = mergeSummaryItems(finalSummary.Editors, s.Editors)
-		finalSummary.OperatingSystems = mergeSummaryItems(finalSummary.OperatingSystems, s.OperatingSystems)
-		finalSummary.Machines = mergeSummaryItems(finalSummary.Machines, s.Machines)
+		finalSummary.Projects = srv.mergeSummaryItems(finalSummary.Projects, s.Projects)
+		finalSummary.Languages = srv.mergeSummaryItems(finalSummary.Languages, s.Languages)
+		finalSummary.Editors = srv.mergeSummaryItems(finalSummary.Editors, s.Editors)
+		finalSummary.OperatingSystems = srv.mergeSummaryItems(finalSummary.OperatingSystems, s.OperatingSystems)
+		finalSummary.Machines = srv.mergeSummaryItems(finalSummary.Machines, s.Machines)
 	}

 	finalSummary.FromTime = models.CustomTime(minTime)
@ -366,7 +262,7 @@ func mergeSummaries(summaries []*models.Summary) (*models.Summary, error) {
 	return finalSummary, nil
 }

-func mergeSummaryItems(existing []*models.SummaryItem, new []*models.SummaryItem) []*models.SummaryItem {
+func (srv *SummaryService) mergeSummaryItems(existing []*models.SummaryItem, new []*models.SummaryItem) []*models.SummaryItem {
 	items := make(map[string]*models.SummaryItem)

 	// Build map from existing
@ -396,11 +292,46 @@ func mergeSummaryItems(existing []*models.SummaryItem, new []*models.SummaryItem
 	return itemList
 }

-func getHash(times []time.Time, user *models.User) string {
-	digest := md5.New()
-	for _, t := range times {
-		digest.Write([]byte(strconv.Itoa(int(t.Unix()))))
+func (srv *SummaryService) getMissingIntervals(from, to time.Time, summaries []*models.Summary) []*models.Interval {
+	if len(summaries) == 0 {
+		return []*models.Interval{{from, to}}
+	}
+
+	intervals := make([]*models.Interval, 0)
+
+	// Pre
+	if from.Before(summaries[0].FromTime.T()) {
+		intervals = append(intervals, &models.Interval{from, summaries[0].FromTime.T()})
+	}
+
+	// Between
+	for i := 0; i < len(summaries)-1; i++ {
+		t1, t2 := summaries[i].ToTime.T(), summaries[i+1].FromTime.T()
+		if t1.Equal(t2) {
+			continue
+		}
+
+		// round to end of day / start of day, assuming that summaries are always generated on a per-day basis
+		td1 := time.Date(t1.Year(), t1.Month(), t1.Day()+1, 0, 0, 0, 0, t1.Location())
+		td2 := time.Date(t2.Year(), t2.Month(), t2.Day(), 0, 0, 0, 0, t2.Location())
+		// one or more day missing in between?
+		if td1.Before(td2) {
+			intervals = append(intervals, &models.Interval{summaries[i].ToTime.T(), summaries[i+1].FromTime.T()})
+		}
+	}
+
+	// Post
+	if to.After(summaries[len(summaries)-1].ToTime.T()) {
+		intervals = append(intervals, &models.Interval{summaries[len(summaries)-1].ToTime.T(), to})
+	}
+
+	return intervals
+}
+
+func (srv *SummaryService) getHash(args ...string) string {
+	digest := md5.New()
+	for _, a := range args {
+		digest.Write([]byte(a))
 	}
-	digest.Write([]byte(user.ID))
 	return string(digest.Sum(nil))
 }
--- a/services/summary_test.go
+++ b/services/summary_test.go
@ -0,0 +1,290 @@
+package services
+
+import (
+	"github.com/muety/wakapi/mocks"
+	"github.com/muety/wakapi/models"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/suite"
+	"math/rand"
+	"strings"
+	"testing"
+	"time"
+)
+
+const (
+	TestUserId         = "muety"
+	TestProject1       = "test-project-1"
+	TestProject2       = "test-project-2"
+	TestLanguageGo     = "Go"
+	TestLanguageJava   = "Java"
+	TestLanguagePython = "Python"
+	TestEditorGoland   = "GoLand"
+	TestEditorIntellij = "idea"
+	TestEditorVscode   = "vscode"
+	TestOsLinux        = "Linux"
+	TestOsWin          = "Windows"
+	TestMachine1       = "muety-desktop"
+	TestMachine2       = "muety-work"
+	MinUnixTime1       = 1601510400000 * 1e6
+)
+
+type SummaryServiceTestSuite struct {
+	suite.Suite
+	TestUser          *models.User
+	TestStartTime     time.Time
+	TestHeartbeats    []*models.Heartbeat
+	SummaryRepository *mocks.SummaryRepositoryMock
+	HeartbeatService  *mocks.HeartbeatServiceMock
+	AliasService      *mocks.AliasServiceMock
+}
+
+func (suite *SummaryServiceTestSuite) SetupSuite() {
+	suite.TestUser = &models.User{ID: TestUserId}
+
+	suite.TestStartTime = time.Unix(0, MinUnixTime1)
+	suite.TestHeartbeats = []*models.Heartbeat{
+		{
+			ID:              uint(rand.Uint32()),
+			UserID:          TestUserId,
+			Project:         TestProject1,
+			Language:        TestLanguageGo,
+			Editor:          TestEditorGoland,
+			OperatingSystem: TestOsLinux,
+			Machine:         TestMachine1,
+			Time:            models.CustomTime(suite.TestStartTime),
+		},
+		{
+			ID:              uint(rand.Uint32()),
+			UserID:          TestUserId,
+			Project:         TestProject1,
+			Language:        TestLanguageGo,
+			Editor:          TestEditorGoland,
+			OperatingSystem: TestOsLinux,
+			Machine:         TestMachine1,
+			Time:            models.CustomTime(suite.TestStartTime.Add(30 * time.Second)),
+		},
+		{
+			ID:              uint(rand.Uint32()),
+			UserID:          TestUserId,
+			Project:         TestProject1,
+			Language:        TestLanguageGo,
+			Editor:          TestEditorVscode,
+			OperatingSystem: TestOsLinux,
+			Machine:         TestMachine1,
+			Time:            models.CustomTime(suite.TestStartTime.Add(3 * time.Minute)),
+		},
+	}
+}
+
+func (suite *SummaryServiceTestSuite) BeforeTest(suiteName, testName string) {
+	suite.SummaryRepository = new(mocks.SummaryRepositoryMock)
+	suite.HeartbeatService = new(mocks.HeartbeatServiceMock)
+	suite.AliasService = new(mocks.AliasServiceMock)
+}
+
+func TestSummaryServiceTestSuite(t *testing.T) {
+	suite.Run(t, new(SummaryServiceTestSuite))
+}
+
+func (suite *SummaryServiceTestSuite) TestSummaryService_Summarize() {
+	sut := NewSummaryService(suite.SummaryRepository, suite.HeartbeatService, suite.AliasService)
+
+	var (
+		from   time.Time
+		to     time.Time
+		result *models.Summary
+		err    error
+	)
+
+	/* TEST 1 */
+	from, to = suite.TestStartTime.Add(-1*time.Hour), suite.TestStartTime.Add(-1*time.Minute)
+	suite.HeartbeatService.On("GetAllWithin", from, to, suite.TestUser).Return(filter(from, to, suite.TestHeartbeats), nil)
+
+	result, err = sut.Summarize(from, to, suite.TestUser)
+
+	assert.Nil(suite.T(), err)
+	assert.NotNil(suite.T(), result)
+	assert.Equal(suite.T(), from, result.FromTime.T())
+	assert.Equal(suite.T(), to, result.ToTime.T())
+	assert.Zero(suite.T(), result.TotalTime())
+	assert.Empty(suite.T(), result.Projects)
+
+	/* TEST 2 */
+	from, to = suite.TestStartTime.Add(-1*time.Hour), suite.TestStartTime.Add(1*time.Second)
+	suite.HeartbeatService.On("GetAllWithin", from, to, suite.TestUser).Return(filter(from, to, suite.TestHeartbeats), nil)
+
+	result, err = sut.Summarize(from, to, suite.TestUser)
+
+	assert.Nil(suite.T(), err)
+	assert.NotNil(suite.T(), result)
+	assert.Equal(suite.T(), suite.TestHeartbeats[0].Time.T(), result.FromTime.T())
+	assert.Equal(suite.T(), suite.TestHeartbeats[0].Time.T(), result.ToTime.T())
+	assert.Zero(suite.T(), result.TotalTime())
+	assertNumAllItems(suite.T(), 1, result, "")
+
+	/* TEST 3 */
+	from, to = suite.TestStartTime, suite.TestStartTime.Add(1*time.Hour)
+	suite.HeartbeatService.On("GetAllWithin", from, to, suite.TestUser).Return(filter(from, to, suite.TestHeartbeats), nil)
+
+	result, err = sut.Summarize(from, to, suite.TestUser)
+
+	assert.Nil(suite.T(), err)
+	assert.NotNil(suite.T(), result)
+	assert.Equal(suite.T(), suite.TestHeartbeats[0].Time.T(), result.FromTime.T())
+	assert.Equal(suite.T(), suite.TestHeartbeats[len(suite.TestHeartbeats)-1].Time.T(), result.ToTime.T())
+	assert.Equal(suite.T(), 150*time.Second, result.TotalTime())
+	assert.Equal(suite.T(), 30*time.Second, result.TotalTimeByKey(models.SummaryEditor, TestEditorGoland))
+	assert.Equal(suite.T(), 120*time.Second, result.TotalTimeByKey(models.SummaryEditor, TestEditorVscode))
+	assert.Len(suite.T(), result.Editors, 2)
+	assertNumAllItems(suite.T(), 1, result, "e")
+}
+
+func (suite *SummaryServiceTestSuite) TestSummaryService_Retrieve() {
+	sut := NewSummaryService(suite.SummaryRepository, suite.HeartbeatService, suite.AliasService)
+
+	var (
+		summaries []*models.Summary
+		from      time.Time
+		to        time.Time
+		result    *models.Summary
+		err       error
+	)
+
+	/* TEST 1 */
+	from, to = suite.TestStartTime.Add(-12*time.Hour), suite.TestStartTime.Add(12*time.Hour)
+	summaries = []*models.Summary{
+		{
+			ID:       uint(rand.Uint32()),
+			UserID:   TestUserId,
+			FromTime: models.CustomTime(from.Add(10 * time.Minute)),
+			ToTime:   models.CustomTime(to.Add(-10 * time.Minute)),
+			Projects: []*models.SummaryItem{
+				{
+					Type:  models.SummaryProject,
+					Key:   TestProject1,
+					Total: 45 * time.Minute / time.Second, // hack
+				},
+			},
+			Languages:        []*models.SummaryItem{},
+			Editors:          []*models.SummaryItem{},
+			OperatingSystems: []*models.SummaryItem{},
+			Machines:         []*models.SummaryItem{},
+		},
+	}
+
+	suite.SummaryRepository.On("GetByUserWithin", suite.TestUser, from, to).Return(summaries, nil)
+	suite.HeartbeatService.On("GetAllWithin", from, summaries[0].FromTime.T(), suite.TestUser).Return([]*models.Heartbeat{}, nil)
+	suite.HeartbeatService.On("GetAllWithin", summaries[0].ToTime.T(), to, suite.TestUser).Return([]*models.Heartbeat{}, nil)
+
+	result, err = sut.Retrieve(from, to, suite.TestUser)
+
+	assert.Nil(suite.T(), err)
+	assert.NotNil(suite.T(), result)
+	assert.Len(suite.T(), result.Projects, 1)
+	assert.Equal(suite.T(), summaries[0].Projects[0].Total*time.Second, result.TotalTime())
+	suite.HeartbeatService.AssertNumberOfCalls(suite.T(), "GetAllWithin", 2)
+
+	/* TEST 2 */
+	from, to = suite.TestStartTime.Add(-10*time.Minute), suite.TestStartTime.Add(12*time.Hour)
+	summaries = []*models.Summary{
+		{
+			ID:       uint(rand.Uint32()),
+			UserID:   TestUserId,
+			FromTime: models.CustomTime(from.Add(20 * time.Minute)),
+			ToTime:   models.CustomTime(to.Add(-6 * time.Hour)),
+			Projects: []*models.SummaryItem{
+				{
+					Type:  models.SummaryProject,
+					Key:   TestProject1,
+					Total: 45 * time.Minute / time.Second, // hack
+				},
+			},
+			Languages:        []*models.SummaryItem{},
+			Editors:          []*models.SummaryItem{},
+			OperatingSystems: []*models.SummaryItem{},
+			Machines:         []*models.SummaryItem{},
+		},
+		{
+			ID:       uint(rand.Uint32()),
+			UserID:   TestUserId,
+			FromTime: models.CustomTime(to.Add(-6 * time.Hour)),
+			ToTime:   models.CustomTime(to),
+			Projects: []*models.SummaryItem{
+				{
+					Type:  models.SummaryProject,
+					Key:   TestProject2,
+					Total: 45 * time.Minute / time.Second, // hack
+				},
+			},
+			Languages:        []*models.SummaryItem{},
+			Editors:          []*models.SummaryItem{},
+			OperatingSystems: []*models.SummaryItem{},
+			Machines:         []*models.SummaryItem{},
+		},
+	}
+
+	suite.SummaryRepository.On("GetByUserWithin", suite.TestUser, from, to).Return(summaries, nil)
+	suite.HeartbeatService.On("GetAllWithin", from, summaries[0].FromTime.T(), suite.TestUser).Return(filter(from, summaries[0].FromTime.T(), suite.TestHeartbeats), nil)
+
+	result, err = sut.Retrieve(from, to, suite.TestUser)
+
+	assert.Nil(suite.T(), err)
+	assert.NotNil(suite.T(), result)
+	assert.Len(suite.T(), result.Projects, 2)
+	assert.Equal(suite.T(), 150*time.Second+90*time.Minute, result.TotalTime())
+	assert.Equal(suite.T(), 150*time.Second+45*time.Minute, result.TotalTimeByKey(models.SummaryProject, TestProject1))
+	assert.Equal(suite.T(), 45*time.Minute, result.TotalTimeByKey(models.SummaryProject, TestProject2))
+}
+
+func (suite *SummaryServiceTestSuite) TestSummaryService_Aliased() {
+	sut := NewSummaryService(suite.SummaryRepository, suite.HeartbeatService, suite.AliasService)
+
+	var (
+		from   time.Time
+		to     time.Time
+		result *models.Summary
+		err    error
+	)
+
+	from, to = suite.TestStartTime, suite.TestStartTime.Add(1*time.Hour)
+	suite.HeartbeatService.On("GetAllWithin", from, to, suite.TestUser).Return(filter(from, to, suite.TestHeartbeats), nil)
+	suite.AliasService.On("LoadUserAliases", TestUserId).Return(nil)
+	suite.AliasService.On("GetAliasOrDefault", TestUserId, models.SummaryProject, TestProject1).Return(TestProject2, nil)
+	suite.AliasService.On("GetAliasOrDefault", TestUserId, mock.Anything, mock.Anything).Return("", nil)
+
+	result, err = sut.Aliased(from, to, suite.TestUser, sut.Summarize)
+
+	assert.Nil(suite.T(), err)
+	assert.NotNil(suite.T(), result)
+	assert.Zero(suite.T(), result.TotalTimeByKey(models.SummaryProject, TestProject1))
+	assert.NotZero(suite.T(), result.TotalTimeByKey(models.SummaryProject, TestProject2))
+}
+
+func filter(from, to time.Time, heartbeats []*models.Heartbeat) []*models.Heartbeat {
+	filtered := make([]*models.Heartbeat, 0, len(heartbeats))
+	for _, h := range heartbeats {
+		if (h.Time.T().Equal(from) || h.Time.T().After(from)) && h.Time.T().Before(to) {
+			filtered = append(filtered, h)
+		}
+	}
+	return filtered
+}
+
+func assertNumAllItems(t *testing.T, expected int, summary *models.Summary, except string) {
+	if !strings.Contains(except, "p") {
+		assert.Len(t, summary.Projects, expected)
+	}
+	if !strings.Contains(except, "e") {
+		assert.Len(t, summary.Editors, expected)
+	}
+	if !strings.Contains(except, "l") {
+		assert.Len(t, summary.Languages, expected)
+	}
+	if !strings.Contains(except, "o") {
+		assert.Len(t, summary.OperatingSystems, expected)
+	}
+	if !strings.Contains(except, "m") {
+		assert.Len(t, summary.Machines, expected)
+	}
+}
--- a/services/user.go
+++ b/services/user.go
@ -10,10 +10,10 @@ import (

 type UserService struct {
 	Config     *config.Config
-	repository *repositories.UserRepository
+	repository repositories.IUserRepository
 }

-func NewUserService(userRepo *repositories.UserRepository) *UserService {
+func NewUserService(userRepo repositories.IUserRepository) *UserService {
 	return &UserService{
 		Config:     config.Get(),
 		repository: userRepo,
--- a/sonar-project.properties
+++ b/sonar-project.properties
@ -0,0 +1,3 @@
+sonar.exclusions=**/*_test.go,.idea/**,.vscode/**,mocks/**
+sonar.tests=.
+sonar.go.coverage.reportPaths=coverage/coverage.out
--- a/static/assets/app.js
+++ b/static/assets/app.js
@ -1,4 +1,3 @@
-const SHOW_TOP_N = 10
 const CHART_TARGET_SIZE = 200

 const projectsCanvas = document.getElementById('chart-projects')
@ -17,7 +16,16 @@ const containers = [projectContainer, osContainer, editorContainer, languageCont
 const canvases = [projectsCanvas, osCanvas, editorsCanvas, languagesCanvas, machinesCanvas]
 const data = [wakapiData.projects, wakapiData.operatingSystems, wakapiData.editors, wakapiData.languages, wakapiData.machines]

+let topNPickers = [...document.getElementsByClassName('top-picker')]
+topNPickers.sort(((a, b) => parseInt(a.attributes['data-entity'].value) - parseInt(b.attributes['data-entity'].value)))
+topNPickers.forEach(e => {
+    const idx = parseInt(e.attributes['data-entity'].value)
+    e.max = Math.min(data[idx].length, 10)
+    e.value = e.max
+})
+
 let charts = []
+let showTopN = []
 let resizeCount = 0

 String.prototype.toHHMMSS = function () {
@ -38,7 +46,7 @@ String.prototype.toHHMMSS = function () {
    return hours + ':' + minutes + ':' + seconds
 }

-function draw() {
+function draw(subselection) {
    function getTooltipOptions(key, type) {
        return {
            mode: 'single',
@ -47,19 +55,26 @@ function draw() {
                    let idx = type === 'pie' ? item.index : item.datasetIndex
                    let d = wakapiData[key][idx]
                    return `${d.key}: ${d.total.toString().toHHMMSS()}`
-                }
+                },
+                title: () => 'Total Time'
            }
        }
    }

-    charts.forEach(c => c.destroy())
+    function shouldUpdate(index) {
+        return !subselection || (subselection.includes(index) && data[index].length >= showTopN[index])
+    }

-    let projectChart = !projectsCanvas.classList.contains('hidden')
+    charts
+        .filter((c, i) => shouldUpdate(i))
+        .forEach(c => c.destroy())
+
+    let projectChart = !projectsCanvas.classList.contains('hidden') && shouldUpdate(0)
        ? new Chart(projectsCanvas.getContext('2d'), {
            type: 'horizontalBar',
            data: {
                datasets: wakapiData.projects
-                    .slice(0, Math.min(SHOW_TOP_N, wakapiData.projects.length))
+                    .slice(0, Math.min(showTopN[0], wakapiData.projects.length))
                    .map(p => {
                        return {
                            label: p.key,
@ -87,18 +102,18 @@ function draw() {
        })
        : null

-    let osChart = !osCanvas.classList.contains('hidden')
+    let osChart = !osCanvas.classList.contains('hidden') && shouldUpdate(1)
        ? new Chart(osCanvas.getContext('2d'), {
            type: 'pie',
            data: {
                datasets: [{
                    data: wakapiData.operatingSystems
-                        .slice(0, Math.min(SHOW_TOP_N, wakapiData.operatingSystems.length))
+                        .slice(0, Math.min(showTopN[1], wakapiData.operatingSystems.length))
                        .map(p => parseInt(p.total)),
                    backgroundColor: wakapiData.operatingSystems.map(p => getRandomColor(p.key))
                }],
                labels: wakapiData.operatingSystems
-                    .slice(0, Math.min(SHOW_TOP_N, wakapiData.operatingSystems.length))
+                    .slice(0, Math.min(showTopN[1], wakapiData.operatingSystems.length))
                    .map(p => p.key)
            },
            options: {
@ -109,18 +124,18 @@ function draw() {
        })
        : null

-    let editorChart = !editorsCanvas.classList.contains('hidden')
+    let editorChart = !editorsCanvas.classList.contains('hidden') && shouldUpdate(2)
        ? new Chart(editorsCanvas.getContext('2d'), {
            type: 'pie',
            data: {
                datasets: [{
                    data: wakapiData.editors
-                        .slice(0, Math.min(SHOW_TOP_N, wakapiData.editors.length))
+                        .slice(0, Math.min(showTopN[2], wakapiData.editors.length))
                        .map(p => parseInt(p.total)),
                    backgroundColor: wakapiData.editors.map(p => getRandomColor(p.key))
                }],
                labels: wakapiData.editors
-                    .slice(0, Math.min(SHOW_TOP_N, wakapiData.editors.length))
+                    .slice(0, Math.min(showTopN[2], wakapiData.editors.length))
                    .map(p => p.key)
            },
            options: {
@ -131,18 +146,18 @@ function draw() {
        })
        : null

-    let languageChart = !languagesCanvas.classList.contains('hidden')
+    let languageChart = !languagesCanvas.classList.contains('hidden') && shouldUpdate(3)
        ? new Chart(languagesCanvas.getContext('2d'), {
            type: 'pie',
            data: {
                datasets: [{
                    data: wakapiData.languages
-                        .slice(0, Math.min(SHOW_TOP_N, wakapiData.languages.length))
+                        .slice(0, Math.min(showTopN[3], wakapiData.languages.length))
                        .map(p => parseInt(p.total)),
                    backgroundColor: wakapiData.languages.map(p => languageColors[p.key.toLowerCase()] || getRandomColor(p.key))
                }],
                labels: wakapiData.languages
-                    .slice(0, Math.min(SHOW_TOP_N, wakapiData.languages.length))
+                    .slice(0, Math.min(showTopN[3], wakapiData.languages.length))
                    .map(p => p.key)
            },
            options: {
@ -153,18 +168,18 @@ function draw() {
        })
        : null

-    let machineChart = !machinesCanvas.classList.contains('hidden')
+    let machineChart = !machinesCanvas.classList.contains('hidden') && shouldUpdate(4)
        ? new Chart(machinesCanvas.getContext('2d'), {
            type: 'pie',
            data: {
                datasets: [{
                    data: wakapiData.machines
-                        .slice(0, Math.min(SHOW_TOP_N, wakapiData.machines.length))
+                        .slice(0, Math.min(showTopN[4], wakapiData.machines.length))
                        .map(p => parseInt(p.total)),
                    backgroundColor: wakapiData.machines.map(p => getRandomColor(p.key))
                }],
                labels: wakapiData.machines
-                    .slice(0, Math.min(SHOW_TOP_N, wakapiData.machines.length))
+                    .slice(0, Math.min(showTopN[4], wakapiData.machines.length))
                    .map(p => p.key)
            },
            options: {
@ -179,13 +194,14 @@ function draw() {

    charts = [projectChart, osChart, editorChart, languageChart, machineChart].filter(c => !!c)

-    charts.forEach(c => c.options.onResize(c.chart))
-    equalizeHeights()
+    if (!subselection) {
+        charts.forEach(c => c.options.onResize(c.chart))
+        equalizeHeights()
+    }
 }

-function setTopLabels() {
-    [...document.getElementsByClassName('top-label')]
-        .forEach(e => e.innerText = `(top ${SHOW_TOP_N})`)
+function parseTopN() {
+    showTopN = topNPickers.map(e => parseInt(e.value))
 }

 function togglePlaceholders(mask) {
@ -203,7 +219,7 @@ function togglePlaceholders(mask) {
 }

 function getPresentDataMask() {
-    return data.map(list => list ? list.reduce((acc, e) => acc + e.total, 0) : 0 > 0)
+    return data.map(list => (list ? list.reduce((acc, e) => acc + e.total, 0) : 0) > 0)
 }

 function getContainer(chart) {
@ -300,7 +316,12 @@ window.addEventListener('click', function (event) {
 })

 window.addEventListener('load', function () {
-    setTopLabels()
+    topNPickers.forEach(e => e.addEventListener('change', () => {
+        parseTopN()
+        draw([parseInt(e.attributes['data-entity'].value)])
+    }))
+
+    parseTopN()
    togglePlaceholders(getPresentDataMask())
    draw()
 })
--- a/static/assets/images/android-chrome-192x192.png
+++ b/static/assets/images/android-chrome-192x192.png
--- a/static/assets/images/android-chrome-512x512.png
+++ b/static/assets/images/android-chrome-512x512.png
--- a/static/assets/images/apple-touch-icon.png
+++ b/static/assets/images/apple-touch-icon.png
--- a/static/assets/images/favicon-16x16.png
+++ b/static/assets/images/favicon-16x16.png
--- a/static/assets/images/favicon-32x32.png
+++ b/static/assets/images/favicon-32x32.png
--- a/static/assets/images/favicon.ico
+++ b/static/assets/images/favicon.ico
--- a/static/assets/images/ghicon.svg
+++ b/static/assets/images/ghicon.svg
@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128"><g fill="#eee"><path fill-rule="evenodd" clip-rule="evenodd" d="M64 5.103c-33.347 0-60.388 27.035-60.388 60.388 0 26.682 17.303 49.317 41.297 57.303 3.017.56 4.125-1.31 4.125-2.905 0-1.44-.056-6.197-.082-11.243-16.8 3.653-20.345-7.125-20.345-7.125-2.747-6.98-6.705-8.836-6.705-8.836-5.48-3.748.413-3.67.413-3.67 6.063.425 9.257 6.223 9.257 6.223 5.386 9.23 14.127 6.562 17.573 5.02.542-3.903 2.107-6.568 3.834-8.076-13.413-1.525-27.514-6.704-27.514-29.843 0-6.593 2.36-11.98 6.223-16.21-.628-1.52-2.695-7.662.584-15.98 0 0 5.07-1.623 16.61 6.19C53.7 35 58.867 34.327 64 34.304c5.13.023 10.3.694 15.127 2.033 11.526-7.813 16.59-6.19 16.59-6.19 3.287 8.317 1.22 14.46.593 15.98 3.872 4.23 6.215 9.617 6.215 16.21 0 23.194-14.127 28.3-27.574 29.796 2.167 1.874 4.097 5.55 4.097 11.183 0 8.08-.07 14.583-.07 16.572 0 1.607 1.088 3.49 4.148 2.897 23.98-7.994 41.263-30.622 41.263-57.294C124.388 32.14 97.35 5.104 64 5.104z"/><path d="M26.484 91.806c-.133.3-.605.39-1.035.185-.44-.196-.685-.605-.543-.906.13-.31.603-.395 1.04-.188.44.197.69.61.537.91zm-.743-.55M28.93 94.535c-.287.267-.85.143-1.232-.28-.396-.42-.47-.983-.177-1.254.298-.266.844-.14 1.24.28.394.426.472.984.17 1.255zm-.575-.618M31.312 98.012c-.37.258-.976.017-1.35-.52-.37-.538-.37-1.183.01-1.44.373-.258.97-.025 1.35.507.368.545.368 1.19-.01 1.452zm0 0M34.573 101.373c-.33.365-1.036.267-1.552-.23-.527-.487-.674-1.18-.343-1.544.336-.366 1.045-.264 1.564.23.527.486.686 1.18.333 1.543zm0 0M39.073 103.324c-.147.473-.825.688-1.51.486-.683-.207-1.13-.76-.99-1.238.14-.477.823-.7 1.512-.485.683.206 1.13.756.988 1.237zm0 0M44.016 103.685c.017.498-.563.91-1.28.92-.723.017-1.308-.387-1.315-.877 0-.503.568-.91 1.29-.924.717-.013 1.306.387 1.306.88zm0 0M48.614 102.903c.086.485-.413.984-1.126 1.117-.7.13-1.35-.172-1.44-.653-.086-.498.422-.997 1.122-1.126.714-.123 1.354.17 1.444.663zm0 0"/></g></svg>
--- a/static/assets/images/screenshot.png
+++ b/static/assets/images/screenshot.png
--- a/static/assets/site.webmanifest
+++ b/static/assets/site.webmanifest
@ -0,0 +1,19 @@
+{
+  "name": "",
+  "short_name": "",
+  "icons": [
+    {
+      "src": "assets/images/android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "assets/images/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "theme_color": "#ffffff",
+  "background_color": "#ffffff",
+  "display": "standalone"
+}
--- a/utils/common_test.go
+++ b/utils/common_test.go
@ -2,10 +2,11 @@ package utils

 import (
 	"errors"
+	"github.com/stretchr/testify/assert"
 	"testing"
 )

-func TestParseUserAgent(t *testing.T) {
+func TestCommon_ParseUserAgent(t *testing.T) {
 	tests := []struct {
 		in        string
 		outOs     string
@ -38,10 +39,11 @@ func TestParseUserAgent(t *testing.T) {
 		},
 	}

-	for i, test := range tests {
-		if os, editor, err := ParseUserAgent(test.in); os != test.outOs || editor != test.outEditor || !checkErr(test.outError, err) {
-			t.Errorf("[%d] Unexpected result of parsing '%s'; got '%v', '%v', '%v'", i, test.in, os, editor, err)
-		}
+	for _, test := range tests {
+		os, editor, err := ParseUserAgent(test.in)
+		assert.True(t, checkErr(err, test.outError))
+		assert.Equal(t, test.outOs, os)
+		assert.Equal(t, test.outEditor, editor)
 	}
 }

--- a/utils/http.go
+++ b/utils/http.go
@ -13,13 +13,3 @@ func RespondJSON(w http.ResponseWriter, status int, object interface{}) {
 		log.Printf("error while writing json response: %v", err)
 	}
 }
-
-func ClearCookie(w http.ResponseWriter, name string, secure bool) {
-	http.SetCookie(w, &http.Cookie{
-		Name:     name,
-		Value:    "",
-		Path:     "/",
-		Secure:   secure,
-		HttpOnly: true,
-	})
-}
--- a/version.txt
+++ b/version.txt
@ -1 +1 @@
-1.15.1
+1.18.1
--- a/views/foot.tpl.html
+++ b/views/foot.tpl.html
@ -1,14 +1,2 @@
-<script src="https://cdnjs.cloudflare.com/ajax/libs/seedrandom/2.4.4/seedrandom.min.js"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.3/Chart.bundle.min.js"></script>
-
-<script>
-    const languageColors = {{ .LanguageColors | json }}
-
-    let wakapiData = {}
-    wakapiData.projects = {{ .Projects | json }}
-    wakapiData.operatingSystems = {{ .OperatingSystems | json }}
-    wakapiData.editors = {{ .Editors | json }}
-    wakapiData.languages = {{ .Languages | json }}
-    wakapiData.machines = {{ .Machines | json }}
-</script>
-<script src="assets/app.js"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/seedrandom/3.0.5/seedrandom.min.js"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.4/Chart.bundle.min.js"></script>
--- a/views/head.tpl.html
+++ b/views/head.tpl.html
@ -2,7 +2,10 @@
    <title>Wakapi – Coding Statistics</title>
    <base href="{{ getBasePath }}/">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
-    <link rel="icon" data-emoji="📊" type="image/png">
+    <link rel="apple-touch-icon" sizes="180x180" href="assets/images/apple-touch-icon.png">
+    <link rel="icon" type="image/png" sizes="32x32" href="assets/images/favicon-32x32.png">
+    <link rel="icon" type="image/png" sizes="16x16" href="assets/images/favicon-16x16.png">
+    <link rel="manifest" href="assets/site.webmanifest">
    <link href="https://fonts.googleapis.com/css?family=Roboto&display=swap" rel="stylesheet">
    <link href="https://unpkg.com/tailwindcss@^1.4.6/dist/tailwind.min.css" rel="stylesheet">
    <link href="assets/app.css" rel="stylesheet">
--- a/views/header.tpl.html
+++ b/views/header.tpl.html
@ -0,0 +1,6 @@
+<header class="flex justify-between mb-10">
+    <a id="logo-container" class="text-2xl font-semibold text-white inline-block" href="">
+        <span>&#x1f4ca;</span>
+        <span>Wakapi</span>
+    </a>
+</header>
--- a/views/imprint.tpl.html
+++ b/views/imprint.tpl.html
@ -4,6 +4,9 @@
 {{ template "head.tpl.html" . }}

 <body class="bg-gray-800 text-gray-700 p-4 pt-10 flex flex-col min-h-screen max-w-screen-xl mx-auto justify-center">
+
+{{ template "header.tpl.html" . }}
+
 <div class="w-full flex justify-center">
    <div class="flex items-center justify-between max-w-4xl flex-grow">
        <div><a href="" class="text-gray-500 text-sm">&larr; Go back</a></div>
--- a/views/index.tpl.html
+++ b/views/index.tpl.html
@ -3,35 +3,62 @@

 {{ template "head.tpl.html" . }}

-<body class="bg-gray-800 text-gray-700 p-4 pt-10 flex flex-col min-h-screen max-w-screen-xl mx-auto justify-center">
-<div class="flex items-center justify-center">
-    <h1 class="font-semibold text-2xl text-white m-0 border-b-4 border-green-700">Login</h1>
-</div>
+<body class="relative bg-gray-800 text-gray-700 p-4 pt-10 flex flex-col min-h-screen max-w-screen-lg mx-auto justify-center">
+
+{{ template "header.tpl.html" . }}

 {{ template "alerts.tpl.html" . }}

+<div class="absolute flex top-0 right-0 mr-8 mt-10 py-2">
+    <div class="mx-1">
+        <a href="login" class="py-1 px-3 h-8 block rounded border border-green-700 text-white text-sm">🔑 &nbsp;Login️</a>
+    </div>
+</div>
+
 <main class="mt-10 flex-grow flex justify-center w-full">
-    <div class="flex-grow max-w-lg mt-12">
-        <form action="login" method="post">
-            <div class="mb-8">
-                <label class="inline-block text-sm mb-1 text-gray-500" for="username">Username</label>
-                <input class="shadow appearance-none bg-gray-800 focus:bg-gray-700 text-gray-300 border-green-700 focus:border-gray-500 border rounded w-full py-1 px-3"
-                       type="text" id="username"
-                       name="username" placeholder="Enter your username" minlength="3" required autofocus>
+    <div class="flex flex-col text-white">
+        <h1 class="text-4xl font-semibold antialiased text-center mb-2">Keep Track of <span class="text-green-700">Your</span> Coding Time 🕓</h1>
+        <p class="text-center text-gray-500 text-xl my-2">Wakapi is an open-source tool that helps you keep track of the time you have spent coding on different projects in different programming languages and more. Ideal for statistics freaks any anyone else.</p>
+
+        <div class="flex justify-center mt-4 mb-8 space-x-2">
+            <a href="login">
+                <button type="button" class="py-1 px-3 rounded bg-green-700 hover:bg-green-800 text-white font-semibold">🚀 Try it!</button>
+            </a>
+            <a href="https://github.com/muety/wakapi#%EF%B8%8F-server-setup" target="_blank" rel="noopener noreferrer">
+                <button type="button" class="py-1 px-3 h-8 rounded border border-green-700 text-white">📡 Host it</button>
+            </a>
+            <a href="https://github.com/muety/wakapi" target="_blank" rel="noopener noreferrer">
+                <button type="button" class="py-1 px-3 h-8 rounded border border-green-700 text-white">
+                    <img alt="GitHub Icon" src="assets/images/ghicon.svg" width="22px">
+                </button>
+            </a>
+        </div>
+
+        <div class="flex justify-center my-8">
+            <img alt="App screenshot" src="assets/images/screenshot.png">
+        </div>
+
+        <div class="flex flex-col items-center mt-10">
+            <h1 class="font-semibold text-xl text-white m-0 border-b-4 border-green-700">Features</h1>
+            <div class="mt-4 text-lg">
+                <ul>
+                    <li>✅ &nbsp; 100 % free and open-source</li>
+                    <li>✅ &nbsp; Built by developers for developers</li>
+                    <li>✅ &nbsp; Fancy statistics and plots</li>
+                    <li>✅ &nbsp; Cool badges for readmes</li>
+                    <li>✅ &nbsp; Intuitive REST API</li>
+                    <li>✅ &nbsp; Compatible with <a href="https://wakatime.com" target="_blank" rel="noopener noreferrer" class="underline">Wakatime</a></li>
+                    <li>✅ &nbsp; <a href="https://prometheus.io" target="_blank" rel="noopener noreferrer" class="underline">Prometheus</a> metrics via <a href="https://github.com/MacroPower/wakatime_exporter" target="_blank" rel="noopener noreferrer" class="underline">exporter</a></li>
+                    <li>✅ &nbsp; Self-hosted</li>
+                </ul>
            </div>
-            <div class="mb-8">
-                <label class="inline-block text-sm mb-1 text-gray-500" for="password">Password</label>
-                <input class="shadow appearance-none bg-gray-800 focus:bg-gray-700 text-gray-300 border-green-700 focus:border-gray-500 border rounded w-full py-1 px-3"
-                       type="password" id="password"
-                       name="password" placeholder="******" minlength="6" required>
-            </div>
-            <div class="flex justify-between">
-                <a href="signup">
-                    <button type="button" class="py-1 px-3 rounded border border-green-700 text-white text-sm">Sign up</button>
-                </a>
-                <button type="submit" class="py-1 px-3 rounded bg-green-700 hover:bg-green-800 text-white text-sm">Log in</button>
-            </div>
-        </form>
+        </div>
+
+        <div class="flex justify-center space-x-2 mt-12">
+            <img alt="License badge" src="https://badges.fw-web.space/github/license/muety/wakapi?color=%232F855A&style=flat-square">
+            <img alt="Go version badge" src="https://badges.fw-web.space/github/go-mod/go-version/muety/wakapi?color=%232F855A&style=flat-square">
+            <img alt="Wakapi coding time badge" src="https://badges.fw-web.space/endpoint?color=%232F855A&style=flat-square&label=wakapi&url=https://wakapi.dev/api/compat/shields/v1/n1try/interval:any/project:wakapi">
+        </div>
    </div>
 </main>

--- a/views/login.tpl.html
+++ b/views/login.tpl.html
@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+
+{{ template "head.tpl.html" . }}
+
+<body class="bg-gray-800 text-gray-700 p-4 pt-10 flex flex-col min-h-screen max-w-screen-lg mx-auto justify-center">
+
+{{ template "header.tpl.html" . }}
+
+<div class="flex items-center justify-center">
+    <h1 class="font-semibold text-xl text-white m-0 border-b-4 border-green-700">Login</h1>
+</div>
+
+{{ template "alerts.tpl.html" . }}
+
+<main class="mt-10 flex-grow flex justify-center w-full">
+    <div class="flex-grow max-w-lg mt-10">
+        <form action="login" method="post">
+            <div class="mb-8">
+                <label class="inline-block text-sm mb-1 text-gray-500" for="username">Username</label>
+                <input class="shadow appearance-none bg-gray-800 focus:bg-gray-700 text-gray-300 border-green-700 focus:border-gray-500 border rounded w-full py-1 px-3"
+                       type="text" id="username"
+                       name="username" placeholder="Enter your username" minlength="3" required autofocus>
+            </div>
+            <div class="mb-8">
+                <label class="inline-block text-sm mb-1 text-gray-500" for="password">Password</label>
+                <input class="shadow appearance-none bg-gray-800 focus:bg-gray-700 text-gray-300 border-green-700 focus:border-gray-500 border rounded w-full py-1 px-3"
+                       type="password" id="password"
+                       name="password" placeholder="******" minlength="6" required>
+            </div>
+            <div class="flex justify-between">
+                <a href="signup">
+                    <button type="button" class="py-1 px-3 rounded border border-green-700 text-white text-sm">Sign up</button>
+                </a>
+                <button type="submit" class="py-1 px-3 rounded bg-green-700 hover:bg-green-800 text-white text-sm">Log in</button>
+            </div>
+        </form>
+    </div>
+</main>
+
+{{ template "footer.tpl.html" . }}
+
+{{ template "foot.tpl.html" . }}
+</body>
+
+</html>
--- a/views/settings.tpl.html
+++ b/views/settings.tpl.html
@ -4,18 +4,21 @@
 {{ template "head.tpl.html" . }}

 <body class="bg-gray-800 text-gray-700 p-4 pt-10 flex flex-col min-h-screen max-w-screen-xl mx-auto justify-center">
+
+{{ template "header.tpl.html" . }}
+
 <div class="w-full flex justify-center">
-    <div class="flex items-center justify-between max-w-4xl flex-grow">
+    <div class="flex items-center justify-between max-w-xl flex-grow">
        <div><a href="" class="text-gray-500 text-sm">&larr; Go back</a></div>
        <div><h1 class="font-semibold text-2xl text-white m-0 border-b-4 border-green-700">Settings</h1></div>
-        <div></div>
+        <div>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</div>
    </div>
 </div>

 {{ template "alerts.tpl.html" . }}

 <main class="mt-4 flex-grow flex justify-center w-full">
-    <div class="flex flex-col flex-grow max-w-lg mt-8">
+    <div class="flex flex-col flex-grow max-w-xl mt-8">
        <div class="w-full my-8 pb-8 border-b border-gray-700">
            <div class="font-semibold text-lg text-white m-0 border-b-2 border-green-700 inline-block">
                Change Password
@ -72,7 +75,7 @@
            </div>
            
            <div class="text-gray-300 text-sm mb-4 mt-6">
-                You can specify custom mapping from file extensions to programming languages (e.g. a <span class="text-xs bg-gray-900 rounded py-1 px-2 font-mono">.jsx</span> file could be mapped to <span class="text-xs bg-gray-900 rounded py-1 px-2 font-mono">React</span>.
+                You can specify custom mapping from file extensions to programming languages (e.g. a <span class="text-xs bg-gray-900 rounded py-1 px-2 font-mono">.jsx</span> file could be mapped to <span class="text-xs bg-gray-900 rounded py-1 px-2 font-mono">React</span>.)
            </div>

            {{ if .LanguageMappings }}
--- a/views/summary.tpl.html
+++ b/views/summary.tpl.html
@ -5,6 +5,8 @@

 <body class="relative bg-gray-800 text-gray-700 p-4 pt-10 flex flex-col min-h-screen max-w-screen-xl mx-auto justify-center">

+{{ template "header.tpl.html" . }}
+
 <div class="hidden flex bg-gray-800 shadow-md z-10 p-2 absolute top-0 right-0 mt-10 mr-8 border border-green-700 rounded popup"
     id="api-key-popup">
    <div class="flex-grow flex flex-col px-2">
@ -64,9 +66,13 @@
    <div class="flex flex-wrap justify-center">
        <div class="w-full lg:w-1/2 p-1">
            <div class="p-4 pb-10 bg-white rounded shadow m-2 flex flex-col" id="project-container" style="height: 300px">
-                <div class="self-center flex">
-                    <span class="font-semibold mr-1">Projects</span>
-                    <span id="project-top-label" class="top-label"></span>
+                <div class="flex justify-between">
+                    <div class="w-1/4 flex-1"></div>
+                    <span class="font-semibold w-1/2 text-center flex-1">Projects</span>
+                    <div class="flex justify-end flex-1 text-xs items-center">
+                        <label for="project-top-picker" class="mr-1">Show:&nbsp;</label>
+                        <input type="number" min="1" id="project-top-picker" data-entity="0" class="w-1/4 top-picker bg-gray-200 rounded-md text-center" value="10">
+                    </div>
                </div>
                <canvas id="chart-projects"></canvas>
                <div class="hidden placeholder-container flex items-center justify-center h-full flex-col">
@ -77,9 +83,13 @@
        </div>
        <div class="w-full lg:w-1/2 p-1">
            <div class="p-4 pb-10 bg-white rounded shadow m-2 flex flex-col" id="os-container" style="height: 300px">
-                <div class="self-center flex">
-                    <span class="font-semibold mr-1">Operating Systems</span>
-                    <span id="os-top-label" class="top-label"></span>
+                <div class="flex justify-between">
+                    <div class="w-1/4 flex-1"></div>
+                    <span class="font-semibold w-1/2 text-center flex-1">Operating Systems</span>
+                    <div class="flex justify-end flex-1 text-xs items-center">
+                        <label for="os-top-picker" class="mr-1">Show:&nbsp;</label>
+                        <input type="number" min="1" id="os-top-picker" data-entity="1" class="w-1/4 top-picker bg-gray-200 rounded-md text-center" value="10">
+                    </div>
                </div>
                <canvas id="chart-os"></canvas>
                <div class="hidden placeholder-container flex items-center justify-center h-full flex-col">
@ -90,9 +100,13 @@
        </div>
        <div class="w-full lg:w-1/2 p-1">
            <div class="p-4 pb-10 bg-white rounded shadow m-2 flex flex-col relative" id="language-container" style="height: 300px">
-                <div class="self-center flex">
-                    <span class="font-semibold mr-1">Languages</span>
-                    <span id="language-top-label" class="top-label"></span>
+                <div class="flex justify-between">
+                    <div class="w-1/4 flex-1"></div>
+                    <span class="font-semibold w-1/2 text-center flex-1">Languages</span>
+                    <div class="flex justify-end flex-1 text-xs items-center">
+                        <label for="language-top-picker" class="mr-1">Show:&nbsp;</label>
+                        <input type="number" min="1" id="language-top-picker" data-entity="3" class="w-1/4 top-picker bg-gray-200 rounded-md text-center" value="10">
+                    </div>
                </div>
                <canvas id="chart-language"></canvas>
                <div class="hidden placeholder-container flex items-center justify-center h-full flex-col">
@ -103,9 +117,13 @@
        </div>
        <div class="w-full lg:w-1/2 p-1">
            <div class="p-4 pb-10 bg-white rounded shadow m-2 flex flex-col" id="editor-container" style="height: 300px">
-                <div class="self-center flex">
-                    <span class="font-semibold mr-1">Editors</span>
-                    <span id="editor-top-label" class="top-label"></span>
+                <div class="flex justify-between">
+                    <div class="w-1/4 flex-1"></div>
+                    <span class="font-semibold w-1/2 text-center flex-1">Editors</span>
+                    <div class="flex justify-end flex-1 text-xs items-center">
+                        <label for="editor-top-picker" class="mr-1">Show:&nbsp;</label>
+                        <input type="number" min="1" id="editor-top-picker" data-entity="2" class="w-1/4 top-picker bg-gray-200 rounded-md text-center" value="10">
+                    </div>
                </div>
                <canvas id="chart-editor"></canvas>
                <div class="hidden placeholder-container flex items-center justify-center h-full flex-col">
@ -116,9 +134,13 @@
        </div>
        <div class="w-full lg:w-1/2 p-1">
            <div class="p-4 pb-10 bg-white rounded shadow m-2 flex flex-col" id="machine-container" style="height: 300px">
-                <div class="self-center flex">
-                    <span class="font-semibold mr-1">Machines</span>
-                    <span id="machine-top-label" class="top-label"></span>
+                <div class="flex justify-between">
+                    <div class="w-1/4 flex-1"></div>
+                    <span class="font-semibold w-1/2 text-center flex-1">Machines</span>
+                    <div class="flex justify-end flex-1 text-xs items-center">
+                        <label for="machine-top-picker" class="mr-1">Show:&nbsp;</label>
+                        <input type="number" min="1" id="machine-top-picker" data-entity="4" class="w-1/4 top-picker bg-gray-200 rounded-md text-center" value="10">
+                    </div>
                </div>
                <canvas id="chart-machine"></canvas>
                <div class="hidden placeholder-container flex items-center justify-center h-full flex-col">
@ -133,6 +155,19 @@
 {{ template "footer.tpl.html" . }}

 {{ template "foot.tpl.html" . }}
+
+<script>
+    const languageColors = {{ .LanguageColors | json }}
+
+    const wakapiData = {}
+    wakapiData.projects = {{ .Projects | json }}
+    wakapiData.operatingSystems = {{ .OperatingSystems | json }}
+    wakapiData.editors = {{ .Editors | json }}
+    wakapiData.languages = {{ .Languages | json }}
+    wakapiData.machines = {{ .Machines | json }}
+</script>
+<script src="assets/app.js"></script>
+
 </body>

 </html>
Author	SHA1	Message	Date
Ferdinand Mütsch	625ca8215e	fix: concurrent access to language mappings (resolve #83 )	2021-01-07 10:52:49 +01:00
Ferdinand Mütsch	9e735eb47e	fix: do not attempt to bind on ipv6 in docker	2021-01-07 10:04:36 +01:00
Ferdinand Mütsch	9766d8e903	feat: ability to choose number of top entities to display (resolve #81 )	2021-01-05 12:41:01 +01:00
Ferdinand Mütsch	39c4777fc8	fix: crash on fail to listen	2021-01-05 11:28:51 +01:00
Ferdinand Mütsch	143c80b7b4	docs: update readme	2021-01-04 11:39:02 +01:00
Ferdinand Mütsch	72e42a9c42	feat: add ipv6 and tls support (resolve #79 )	2020-12-12 22:07:00 +01:00
Ferdinand Mütsch	439a87dec9	docs: advanced setup instructions for client-side reverse proxy	2020-12-11 23:05:49 +01:00
Ferdinand Mütsch	e8067bb13e	fix: crash when running aggregation job on schedule (fix #78 ) chore: move from gocron to its maintained fork	2020-12-11 10:05:17 +01:00
Ferdinand Mütsch	219e969957	Merge branch 'master' of github.com:muety/wakapi into master	2020-12-02 23:16:48 +01:00
Ferdinand Mütsch	e610bb3ee3	fix: html footer rendering chore: update chartjs	2020-12-02 23:16:12 +01:00
Ferdinand Mütsch	889edd7a33	Merge pull request #77 from notarock/master Added missing closing parens in language mapping description	2020-12-01 07:48:04 +01:00
Roch D'Amour	4161623c24	Added missing closing parens	2020-11-30 21:42:29 -05:00
Ferdinand Mütsch	67fe6eea56	chore: even more code smell	2020-11-28 20:57:13 +01:00
Ferdinand Mütsch	095fef4868	chore: minor code smell	2020-11-28 20:50:35 +01:00
Ferdinand Mütsch	a0e64ca955	chore: show badges on front page	2020-11-28 20:44:39 +01:00
Ferdinand Mütsch	903defca99	fix: commit missing files chore: add favicon	2020-11-28 20:31:28 +01:00
Ferdinand Mütsch	16b9aa2282	feat: add front page (resolve #34 )	2020-11-28 20:23:40 +01:00
Ferdinand Mütsch	4a78f66778	chore: set samesite attributes and configurable max age for cookies (resolve #75 ) fix: sort entities by total time descending (resolve #74)	2020-11-21 22:30:56 +01:00
Ferdinand Mütsch	f4328c452f	test: add essential unit tests for core functionality (resolve #6 )	2020-11-14 12:30:45 +01:00
Ferdinand Mütsch	e806e5455e	chore: attempt to exclude test and mock code from analysis	2020-11-08 13:13:48 +01:00
Ferdinand Mütsch	97e1fb27eb	chore: attempt to configure coverage for sonar	2020-11-08 13:07:37 +01:00
Ferdinand Mütsch	ad8168801c	test: add first few unit tests	2020-11-08 12:46:12 +01:00
Ferdinand Mütsch	35cdc7b485	refactor: define interface types for all services and repositories	2020-11-08 10:12:49 +01:00
Ferdinand Mütsch	664714de8f	fix: filters	2020-11-07 18:39:36 +01:00
Ferdinand Mütsch	7befb82814	chore: remove clean up related parameters	2020-11-07 12:34:17 +01:00
Ferdinand Mütsch	2f12d8efde	refactor: simplify summary generation (resolve #68 )	2020-11-07 12:01:35 +01:00
				`@ -0,0 +1 @@`
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 @ -1 +1 @@
 .15.1
 .18.1