feat: implement project labels (resolve #204)

config/config.go

@@ -197,6 +197,9 @@ func (c *Config) GetMigrationFunc(dbDialect string) models.MigrationFunc {
 			if err := db.AutoMigrate(&models.LanguageMapping{}); err != nil && !c.Db.AutoMigrateFailSilently {
 				return err
 			}
+			if err := db.AutoMigrate(&models.ProjectLabel{}); err != nil && !c.Db.AutoMigrateFailSilently {
+				return err
+			}
 			return nil
 		}
 	}

main.go

@@ -49,6 +49,7 @@ var (
 	heartbeatRepository       repositories.IHeartbeatRepository
 	userRepository            repositories.IUserRepository
 	languageMappingRepository repositories.ILanguageMappingRepository
+	projectLabelRepository    repositories.IProjectLabelRepository
 	summaryRepository         repositories.ISummaryRepository
 	keyValueRepository        repositories.IKeyValueRepository
 )
@@ -58,6 +59,7 @@ var (
 	heartbeatService       services.IHeartbeatService
 	userService            services.IUserService
 	languageMappingService services.ILanguageMappingService
+	projectLabelService    services.IProjectLabelService
 	summaryService         services.ISummaryService
 	aggregationService     services.IAggregationService
 	mailService            services.IMailService
@@ -135,6 +137,7 @@ func main() {
 	heartbeatRepository = repositories.NewHeartbeatRepository(db)
 	userRepository = repositories.NewUserRepository(db)
 	languageMappingRepository = repositories.NewLanguageMappingRepository(db)
+	projectLabelRepository = repositories.NewProjectLabelRepository(db)
 	summaryRepository = repositories.NewSummaryRepository(db)
 	keyValueRepository = repositories.NewKeyValueRepository(db)
 
@@ -142,8 +145,9 @@ func main() {
 	aliasService = services.NewAliasService(aliasRepository)
 	userService = services.NewUserService(userRepository)
 	languageMappingService = services.NewLanguageMappingService(languageMappingRepository)
+	projectLabelService = services.NewProjectLabelService(projectLabelRepository)
 	heartbeatService = services.NewHeartbeatService(heartbeatRepository, languageMappingService)
-	summaryService = services.NewSummaryService(summaryRepository, heartbeatService, aliasService)
+	summaryService = services.NewSummaryService(summaryRepository, heartbeatService, aliasService, projectLabelService)
 	aggregationService = services.NewAggregationService(userService, summaryService, heartbeatService)
 	mailService = mail.NewMailService()
 	keyValueService = services.NewKeyValueService(keyValueRepository)

models/filters.go

@@ -6,6 +6,7 @@ type Filters struct {
 	Language string
 	Editor   string
 	Machine  string
+	Label    string
 }
 
 type FilterElement struct {
@@ -25,6 +26,8 @@ func NewFiltersWith(entity uint8, key string) *Filters {
 		return &Filters{Editor: key}
 	case SummaryMachine:
 		return &Filters{Machine: key}
+	case SummaryLabel:
+		return &Filters{Label: key}
 	}
 	return &Filters{}
 }
@@ -40,6 +43,8 @@ func (f *Filters) One() (bool, uint8, string) {
 		return true, SummaryEditor, f.Editor
 	} else if f.Machine != "" {
 		return true, SummaryMachine, f.Machine
+	} else if f.Machine != "" {
+		return true, SummaryLabel, f.Label
 	}
 	return false, 0, ""
 }

models/project_label.go

@@ -0,0 +1,13 @@
+package models
+
+type ProjectLabel struct {
+	ID         uint   `json:"id" gorm:"primary_key"`
+	User       *User  `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
+	UserID     string `json:"-" gorm:"not null; index:idx_language_mapping_user; index:idx_project_label_user"`
+	ProjectKey string `json:"project"`
+	Label      string `json:"label" gorm:"type:varchar(64)"`
+}
+
+func (l *ProjectLabel) IsValid() bool {
+	return l.ProjectKey != "" && l.Label != ""
+}

models/summary.go

@@ -1,6 +1,7 @@
 package models
 
 import (
+	"errors"
 	"sort"
 	"time"
 )
@@ -12,9 +13,11 @@ const (
 	SummaryEditor   uint8 = 2
 	SummaryOS       uint8 = 3
 	SummaryMachine  uint8 = 4
+	SummaryLabel    uint8 = 5
 )
 
 const UnknownSummaryKey = "unknown"
+const DefaultProjectLabel = "default"
 
 type Summary struct {
 	ID               uint         `json:"-" gorm:"primary_key"`
@@ -27,6 +30,7 @@ type Summary struct {
 	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"`
+	Labels           SummaryItems `json:"labels" gorm:"constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
 }
 
 type SummaryItems []*SummaryItem
@@ -68,6 +72,10 @@ type SummaryParams struct {
 type AliasResolver func(t uint8, k string) string
 
 func SummaryTypes() []uint8 {
+	return []uint8{SummaryProject, SummaryLanguage, SummaryEditor, SummaryOS, SummaryMachine, SummaryLabel}
+}
+
+func NativeSummaryTypes() []uint8 {
 	return []uint8{SummaryProject, SummaryLanguage, SummaryEditor, SummaryOS, SummaryMachine}
 }
 
@@ -77,6 +85,7 @@ func (s *Summary) Sorted() *Summary {
 	sort.Sort(sort.Reverse(s.OperatingSystems))
 	sort.Sort(sort.Reverse(s.Languages))
 	sort.Sort(sort.Reverse(s.Editors))
+	sort.Sort(sort.Reverse(s.Labels))
 	return s
 }
 
@@ -91,6 +100,7 @@ func (s *Summary) MappedItems() map[uint8]*SummaryItems {
 		SummaryEditor:   &s.Editors,
 		SummaryOS:       &s.OperatingSystems,
 		SummaryMachine:  &s.Machines,
+		SummaryLabel:    &s.Labels,
 	}
 }
 
@@ -109,7 +119,7 @@ of time than the other ones.
 To avoid having to modify persisted data retrospectively, i.e. inserting a dummy SummaryItem for the new type,
 such is generated dynamically here, considering the "machine" for all old heartbeats "unknown".
 */
-func (s *Summary) FillUnknown() {
+func (s *Summary) FillMissing() {
 	types := s.Types()
 	typeItems := s.MappedItems()
 	missingTypes := make([]uint8, 0)
@@ -125,14 +135,38 @@ func (s *Summary) FillUnknown() {
 		return
 	}
 
-	timeSum := s.TotalTime()
-
 	// construct dummy item for all missing types
+	presentType, _ := s.findFirstPresentType()
 	for _, t := range missingTypes {
-		*typeItems[t] = append(*typeItems[t], &SummaryItem{
-			Type:  t,
-			Key:   UnknownSummaryKey,
-			Total: timeSum,
+		s.FillBy(presentType, t)
+	}
+}
+
+// inplace!
+func (s *Summary) FillBy(fromType uint8, toType uint8) {
+	typeItems := s.MappedItems()
+	totalWanted := s.TotalTimeBy(fromType) / time.Second
+	totalActual := s.TotalTimeBy(toType) / time.Second
+
+	key := UnknownSummaryKey
+	if toType == SummaryLabel {
+		key = DefaultProjectLabel
+	}
+
+	existingEntryIdx := -1
+	for i, item := range *typeItems[toType] {
+		if item.Key == key {
+			existingEntryIdx = i
+			break
+		}
+	}
+	if existingEntryIdx >= 0 {
+		(*typeItems[toType])[existingEntryIdx].Total = totalWanted - totalActual
+	} else {
+		*typeItems[toType] = append(*typeItems[toType], &SummaryItem{
+			Type:  toType,
+			Key:   key,
+			Total: totalWanted - totalActual,
 		})
 	}
 }
@@ -141,19 +175,26 @@ func (s *Summary) TotalTime() time.Duration {
 	var timeSum time.Duration
 
 	mappedItems := s.MappedItems()
-	// calculate total duration from any of the present sets of items
-	for _, t := range s.Types() {
-		if items := mappedItems[t]; len(*items) > 0 {
-			for _, item := range *items {
+	t, err := s.findFirstPresentType()
+	if err != nil {
+		return 0
+	}
+	for _, item := range *mappedItems[t] {
 		timeSum += item.Total
 	}
-			break
-		}
-	}
 
 	return timeSum * time.Second
 }
 
+func (s *Summary) findFirstPresentType() (uint8, error) {
+	for _, t := range s.Types() {
+		if s.TotalTimeBy(t) > 0 {
+			return t, nil
+		}
+	}
+	return 127, errors.New("no type present")
+}
+
 func (s *Summary) TotalTimeBy(entityType uint8) (timeSum time.Duration) {
 	mappedItems := s.MappedItems()
 	if items := mappedItems[entityType]; len(*items) > 0 {
@@ -231,6 +272,7 @@ func (s *Summary) WithResolvedAliases(resolve AliasResolver) *Summary {
 	s.Languages = processAliases(s.Languages)
 	s.OperatingSystems = processAliases(s.OperatingSystems)
 	s.Machines = processAliases(s.Machines)
+	s.Labels = processAliases(s.Labels)
 
 	return s
 }

models/summary_test.go

@@ -20,7 +20,7 @@ func TestSummary_FillUnknown(t *testing.T) {
 		},
 	}
 
-	sut.FillUnknown()
+	sut.FillMissing()
 
 	itemLists := [][]*SummaryItem{
 		sut.Machines,

models/user.go

@@ -23,6 +23,7 @@ type User struct {
 	ShareProjects    bool       `json:"-" gorm:"default:false; type:bool"`
 	ShareOSs         bool       `json:"-" gorm:"default:false; type:bool; column:share_oss"`
 	ShareMachines    bool       `json:"-" gorm:"default:false; type:bool"`
+	ShareLabels      bool       `json:"-" gorm:"default:false; type:bool"`
 	IsAdmin          bool       `json:"-" gorm:"default:false; type:bool"`
 	HasData          bool       `json:"-" gorm:"default:false; type:bool"`
 	WakatimeApiKey   string     `json:"-"`

repositories/project_label.go

@@ -0,0 +1,60 @@
+package repositories
+
+import (
+	"errors"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"gorm.io/gorm"
+)
+
+type ProjectLabelRepository struct {
+	config *config.Config
+	db     *gorm.DB
+}
+
+func NewProjectLabelRepository(db *gorm.DB) *ProjectLabelRepository {
+	return &ProjectLabelRepository{config: config.Get(), db: db}
+}
+
+func (r *ProjectLabelRepository) GetAll() ([]*models.ProjectLabel, error) {
+	var labels []*models.ProjectLabel
+	if err := r.db.Find(&labels).Error; err != nil {
+		return nil, err
+	}
+	return labels, nil
+}
+
+func (r *ProjectLabelRepository) GetById(id uint) (*models.ProjectLabel, error) {
+	label := &models.ProjectLabel{}
+	if err := r.db.Where(&models.ProjectLabel{ID: id}).First(label).Error; err != nil {
+		return label, err
+	}
+	return label, nil
+}
+
+func (r *ProjectLabelRepository) GetByUser(userId string) ([]*models.ProjectLabel, error) {
+	var labels []*models.ProjectLabel
+	if err := r.db.
+		Where(&models.ProjectLabel{UserID: userId}).
+		Find(&labels).Error; err != nil {
+		return labels, err
+	}
+	return labels, nil
+}
+
+func (r *ProjectLabelRepository) Insert(label *models.ProjectLabel) (*models.ProjectLabel, error) {
+	if !label.IsValid() {
+		return nil, errors.New("invalid label")
+	}
+	result := r.db.Create(label)
+	if err := result.Error; err != nil {
+		return nil, err
+	}
+	return label, nil
+}
+
+func (r *ProjectLabelRepository) Delete(id uint) error {
+	return r.db.
+		Where("id = ?", id).
+		Delete(models.ProjectLabel{}).Error
+}

repositories/repositories.go

@@ -46,6 +46,14 @@ type ILanguageMappingRepository interface {
 	Delete(uint) error
 }
 
+type IProjectLabelRepository interface {
+	GetAll() ([]*models.ProjectLabel, error)
+	GetById(uint) (*models.ProjectLabel, error)
+	GetByUser(string) ([]*models.ProjectLabel, error)
+	Insert(*models.ProjectLabel) (*models.ProjectLabel, error)
+	Delete(uint) error
+}
+
 type ISummaryRepository interface {
 	Insert(*models.Summary) error
 	GetAll() ([]*models.Summary, error)

repositories/summary.go

@@ -23,6 +23,7 @@ func (r *SummaryRepository) GetAll() ([]*models.Summary, error) {
 		Preload("Editors", "type = ?", models.SummaryEditor).
 		Preload("OperatingSystems", "type = ?", models.SummaryOS).
 		Preload("Machines", "type = ?", models.SummaryMachine).
+		Preload("Labels", "type = ?", models.SummaryLabel).
 		Find(&summaries).Error; err != nil {
 		return nil, err
 	}
@@ -48,6 +49,7 @@ func (r *SummaryRepository) GetByUserWithin(user *models.User, from, to time.Tim
 		Preload("Editors", "type = ?", models.SummaryEditor).
 		Preload("OperatingSystems", "type = ?", models.SummaryOS).
 		Preload("Machines", "type = ?", models.SummaryMachine).
+		Preload("Labels", "type = ?", models.SummaryLabel).
 		Find(&summaries).Error; err != nil {
 		return nil, err
 	}

routes/api/metrics.go

@@ -27,6 +27,7 @@ const (
 	DescLanguages        = "Total seconds for each language."
 	DescOperatingSystems = "Total seconds for each operating system."
 	DescMachines         = "Total seconds for each machine."
+	DescLabels           = "Total seconds for each project label."
 
 	DescAdminTotalTime       = "Total seconds (all users, all time)."
 	DescAdminTotalHeartbeats = "Total number of tracked heartbeats (all users, all time)"
@@ -198,6 +199,15 @@ func (h *MetricsHandler) getUserMetrics(user *models.User) (*mm.Metrics, error)
 		})
 	}
 
+	for _, m := range summaryToday.Labels {
+		metrics = append(metrics, &mm.CounterMetric{
+			Name:   MetricsPrefix + "_label_seconds_total",
+			Desc:   DescLabels,
+			Value:  int(summaryToday.TotalTimeByKey(models.SummaryLabel, m.Key).Seconds()),
+			Labels: []mm.Label{{Key: "name", Value: m.Key}},
+		})
+	}
+
 	return &metrics, nil
 }
 

routes/compat/shields/v1/badge.go

@@ -101,6 +101,9 @@ func (h *BadgeHandler) Get(w http.ResponseWriter, r *http.Request) {
 	case "machine":
 		permitEntity = user.ShareMachines
 		filters = models.NewFiltersWith(models.SummaryMachine, filterKey)
+	case "label":
+		permitEntity = user.ShareLabels
+		filters = models.NewFiltersWith(models.SummaryLabel, filterKey)
 	default:
 		permitEntity = true
 		filters = &models.Filters{}

routes/routes.go

@@ -112,6 +112,9 @@ func typeName(t uint8) string {
 	if t == models.SummaryMachine {
 		return "machine"
 	}
+	if t == models.SummaryLabel {
+		return "label"
+	}
 	return "unknown"
 }
 

services/project_label.go

@@ -0,0 +1,73 @@
+package services
+
+import (
+	"errors"
+	"github.com/muety/wakapi/config"
+	"github.com/muety/wakapi/models"
+	"github.com/muety/wakapi/repositories"
+	"github.com/patrickmn/go-cache"
+	"time"
+)
+
+type ProjectLabelService struct {
+	config     *config.Config
+	cache      *cache.Cache
+	repository repositories.IProjectLabelRepository
+}
+
+func NewProjectLabelService(projectLabelRepository repositories.IProjectLabelRepository) *ProjectLabelService {
+	return &ProjectLabelService{
+		config:     config.Get(),
+		repository: projectLabelRepository,
+		cache:      cache.New(24*time.Hour, 24*time.Hour),
+	}
+}
+
+func (srv *ProjectLabelService) GetById(id uint) (*models.ProjectLabel, error) {
+	return srv.repository.GetById(id)
+}
+
+func (srv *ProjectLabelService) GetByUser(userId string) ([]*models.ProjectLabel, error) {
+	if labels, found := srv.cache.Get(userId); found {
+		return labels.([]*models.ProjectLabel), nil
+	}
+
+	labels, err := srv.repository.GetByUser(userId)
+	if err != nil {
+		return nil, err
+	}
+	srv.cache.Set(userId, labels, cache.DefaultExpiration)
+	return labels, nil
+}
+
+func (srv *ProjectLabelService) ResolveByUser(userId string) (map[string]string, error) {
+	labels := make(map[string]string)
+	userLabels, err := srv.GetByUser(userId)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, m := range userLabels {
+		labels[m.ProjectKey] = m.Label
+	}
+	return labels, nil
+}
+
+func (srv *ProjectLabelService) Create(label *models.ProjectLabel) (*models.ProjectLabel, error) {
+	result, err := srv.repository.Insert(label)
+	if err != nil {
+		return nil, err
+	}
+
+	srv.cache.Delete(result.UserID)
+	return result, nil
+}
+
+func (srv *ProjectLabelService) Delete(label *models.ProjectLabel) error {
+	if label.UserID == "" {
+		return errors.New("no user id specified")
+	}
+	err := srv.repository.Delete(label.ID)
+	srv.cache.Delete(label.UserID)
+	return err
+}

services/services.go

@@ -54,6 +54,14 @@ type ILanguageMappingService interface {
 	Delete(mapping *models.LanguageMapping) error
 }
 
+type IProjectLabelService interface {
+	GetById(uint) (*models.ProjectLabel, error)
+	GetByUser(string) ([]*models.ProjectLabel, error)
+	ResolveByUser(string) (map[string]string, error)
+	Create(*models.ProjectLabel) (*models.ProjectLabel, error)
+	Delete(mapping *models.ProjectLabel) error
+}
+
 type IMailService interface {
 	SendPasswordReset(*models.User, string) error
 	SendImportNotification(*models.User, time.Duration, int) error

services/summary.go

@@ -21,17 +21,19 @@ type SummaryService struct {
 	repository          repositories.ISummaryRepository
 	heartbeatService    IHeartbeatService
 	aliasService        IAliasService
+	projectLabelService IProjectLabelService
 }
 
 type SummaryRetriever func(f, t time.Time, u *models.User) (*models.Summary, error)
 
-func NewSummaryService(summaryRepo repositories.ISummaryRepository, heartbeatService IHeartbeatService, aliasService IAliasService) *SummaryService {
+func NewSummaryService(summaryRepo repositories.ISummaryRepository, heartbeatService IHeartbeatService, aliasService IAliasService, projectLabelService IProjectLabelService) *SummaryService {
 	return &SummaryService{
 		config:              config.Get(),
 		cache:               cache.New(24*time.Hour, 24*time.Hour),
 		repository:          summaryRepo,
 		heartbeatService:    heartbeatService,
 		aliasService:        aliasService,
+		projectLabelService: projectLabelService,
 	}
 }
 
@@ -63,6 +65,9 @@ func (srv *SummaryService) Aliased(from, to time.Time, user *models.User, f Summ
 
 	// Post-process summary and cache it
 	summary := s.WithResolvedAliases(resolve)
+	summary.FillBy(models.SummaryProject, models.SummaryLabel) // first fill up labels from projects
+	summary.FillMissing()                                      // then, full up types which are entirely missing
+
 	srv.cache.SetDefault(cacheKey, summary)
 	return summary.Sorted(), nil
 }
@@ -110,7 +115,7 @@ func (srv *SummaryService) Summarize(from, to time.Time, user *models.User) (*mo
 		return nil, err
 	}
 
-	types := models.SummaryTypes()
+	types := models.NativeSummaryTypes()
 
 	typedAggregations := make(chan models.SummaryItemContainer)
 	defer close(typedAggregations)
@@ -156,8 +161,7 @@ func (srv *SummaryService) Summarize(from, to time.Time, user *models.User) (*mo
 		OperatingSystems: osItems,
 		Machines:         machineItems,
 	}
-
-	//summary.FillUnknown()
+	summary = srv.withProjectLabels(summary)
 
 	return summary.Sorted(), nil
 }
@@ -220,6 +224,47 @@ func (srv *SummaryService) aggregateBy(heartbeats []*models.Heartbeat, summaryTy
 	c <- models.SummaryItemContainer{Type: summaryType, Items: items}
 }
 
+func (srv *SummaryService) withProjectLabels(summary *models.Summary) *models.Summary {
+	newEntry := func(key string, total time.Duration) *models.SummaryItem {
+		return &models.SummaryItem{
+			Type:  models.SummaryLabel,
+			Key:   key,
+			Total: total,
+		}
+	}
+
+	allLabels, err := srv.projectLabelService.GetByUser(summary.UserID)
+	if err != nil {
+		logbuch.Error("failed to retrieve project labels for user summary ('%s', '%s', '%s')", summary.UserID, summary.FromTime.String(), summary.ToTime.String())
+		return summary
+	}
+
+	mappedProjects := make(map[string]*models.SummaryItem, len(summary.Projects))
+	for _, p := range summary.Projects {
+		mappedProjects[p.Key] = p
+	}
+
+	var totalLabelTime time.Duration
+	labelMap := make(map[string]*models.SummaryItem, 0)
+	for _, l := range allLabels {
+		if p, ok := mappedProjects[l.ProjectKey]; ok {
+			if _, ok2 := labelMap[l.Label]; !ok2 {
+				labelMap[l.Label] = newEntry(l.Label, 0)
+			}
+			labelMap[l.Label].Total += p.Total
+			totalLabelTime += p.Total
+		}
+	}
+	//labelMap[models.DefaultProjectLabel] = newEntry(models.DefaultProjectLabel, summary.TotalTimeBy(models.SummaryProject) / time.Second-totalLabelTime)
+
+	labels := make([]*models.SummaryItem, 0, len(labelMap))
+	for _, v := range labelMap {
+		labels = append(labels, v)
+	}
+	summary.Labels = labels
+	return summary
+}
+
 func (srv *SummaryService) mergeSummaries(summaries []*models.Summary) (*models.Summary, error) {
 	if len(summaries) < 1 {
 		return nil, errors.New("no summaries given")
@@ -235,6 +280,7 @@ func (srv *SummaryService) mergeSummaries(summaries []*models.Summary) (*models.
 		Editors:          make([]*models.SummaryItem, 0),
 		OperatingSystems: make([]*models.SummaryItem, 0),
 		Machines:         make([]*models.SummaryItem, 0),
+		Labels:           make([]*models.SummaryItem, 0),
 	}
 
 	var processed = map[time.Time]bool{}
@@ -263,6 +309,7 @@ func (srv *SummaryService) mergeSummaries(summaries []*models.Summary) (*models.
 		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.Labels = srv.mergeSummaryItems(finalSummary.Labels, s.Labels)
 
 		processed[hash] = true
 	}

static/assets/app.js

@@ -5,16 +5,18 @@ const osCanvas = document.getElementById('chart-os')
 const editorsCanvas = document.getElementById('chart-editor')
 const languagesCanvas = document.getElementById('chart-language')
 const machinesCanvas = document.getElementById('chart-machine')
+const labelsCanvas = document.getElementById('chart-label')
 
 const projectContainer = document.getElementById('project-container')
 const osContainer = document.getElementById('os-container')
 const editorContainer = document.getElementById('editor-container')
 const languageContainer = document.getElementById('language-container')
 const machineContainer = document.getElementById('machine-container')
+const labelContainer = document.getElementById('label-container')
 
-const containers = [projectContainer, osContainer, editorContainer, languageContainer, machineContainer]
-const canvases = [projectsCanvas, osCanvas, editorsCanvas, languagesCanvas, machinesCanvas]
-const data = [wakapiData.projects, wakapiData.operatingSystems, wakapiData.editors, wakapiData.languages, wakapiData.machines]
+const containers = [projectContainer, osContainer, editorContainer, languageContainer, machineContainer, labelContainer]
+const canvases = [projectsCanvas, osCanvas, editorsCanvas, languagesCanvas, machinesCanvas, labelsCanvas]
+const data = [wakapiData.projects, wakapiData.operatingSystems, wakapiData.editors, wakapiData.languages, wakapiData.machines, wakapiData.labels]
 
 let topNPickers = [...document.getElementsByClassName('top-picker')]
 topNPickers.sort(((a, b) => parseInt(a.attributes['data-entity'].value) - parseInt(b.attributes['data-entity'].value)))
@@ -255,9 +257,42 @@ function draw(subselection) {
         })
         : null
 
+    let labelChart = !labelsCanvas.classList.contains('hidden') && shouldUpdate(5)
+        ? new Chart(labelsCanvas.getContext('2d'), {
+            type: 'pie',
+            data: {
+                datasets: [{
+                    data: wakapiData.labels
+                        .slice(0, Math.min(showTopN[5], wakapiData.labels.length))
+                        .map(p => parseInt(p.total)),
+                    backgroundColor: wakapiData.labels.map(p => {
+                        const c = hexToRgb(getRandomColor(p.key))
+                        return `rgba(${c.r}, ${c.g}, ${c.b}, 0.6)`
+                    }),
+                    hoverBackgroundColor: wakapiData.labels.map(p => {
+                        const c = hexToRgb(getRandomColor(p.key))
+                        return `rgba(${c.r}, ${c.g}, ${c.b}, 0.8)`
+                    }),
+                    borderColor: wakapiData.labels.map(p => {
+                        const c = hexToRgb(getRandomColor(p.key))
+                        return `rgba(${c.r}, ${c.g}, ${c.b}, 1)`
+                    }),
+                }],
+                labels: wakapiData.labels
+                    .slice(0, Math.min(showTopN[5], wakapiData.labels.length))
+                    .map(p => p.key)
+            },
+            options: {
+                tooltips: getTooltipOptions('labels'),
+                maintainAspectRatio: false,
+                onResize: onChartResize
+            }
+        })
+        : null
+
     getTotal(wakapiData.operatingSystems)
 
-    charts = [projectChart, osChart, editorChart, languageChart, machineChart].filter(c => !!c)
+    charts = [projectChart, osChart, editorChart, languageChart, machineChart, labelChart].filter(c => !!c)
 
     if (!subselection) {
         charts.forEach(c => c.options.onResize(c.chart))

utils/collection.go

@@ -0,0 +1,9 @@
+package utils
+
+func GetMapValues(m map[string]interface{}) []interface{} {
+	values := make([]interface{}, 0, len(m))
+	for _, v := range m {
+		values = append(values, v)
+	}
+	return values
+}

views/summary.tpl.html

@@ -170,6 +170,22 @@
                 </div>
             </div>
         </div>
+        <div class="w-full lg:w-1/2 p-1" style="max-width: 100vw;">
+            <div class="p-4 pb-10 bg-gray-900 border border-gray-700 text-gray-300 rounded-md shadow m-2 flex flex-col" id="label-container" style="height: 300px">
+                <div class="flex justify-between">
+                    <div class="w-1/4 flex-1"></div>
+                    <span class="font-semibold w-1/2 text-center flex-1 whitespace-no-wrap">Labels</span>
+                    <div class="flex justify-end flex-1 text-xs items-center">
+                        <label for="label-top-picker" class="mr-1">Show:&nbsp;</label>
+                        <input type="number" min="1" id="label-top-picker" data-entity="5" class="w-1/4 top-picker bg-gray-800 rounded-md text-center" value="10">
+                    </div>
+                </div>
+                <canvas id="chart-label"></canvas>
+                <div class="hidden placeholder-container flex items-center justify-center h-full flex-col">
+                    <span class="text-md font-semibold text-gray-500 mt-4">No data</span>
+                </div>
+            </div>
+        </div>
     </div>
 
     {{ else }}
@@ -228,6 +244,7 @@
     wakapiData.editors = {{ .Editors | json }}
     wakapiData.languages = {{ .Languages | json }}
     wakapiData.machines = {{ .Machines | json }}
+    wakapiData.labels = {{ .Labels | json }}
 
     document.getElementById("to-date-picker").onchange = function () {
         var input = document.getElementById("from-date-picker");