package services import ( "errors" "github.com/leandro-lugaresi/hub" "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 eventBus *hub.Hub repository repositories.IProjectLabelRepository } func NewProjectLabelService(projectLabelRepository repositories.IProjectLabelRepository) *ProjectLabelService { return &ProjectLabelService{ config: config.Get(), eventBus: config.EventBus(), 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 } // GetByUserGrouped returns lists of project labels, grouped by their project key func (srv *ProjectLabelService) GetByUserGrouped(userId string) (map[string][]*models.ProjectLabel, error) { labelsByProject := make(map[string][]*models.ProjectLabel) userLabels, err := srv.GetByUser(userId) if err != nil { return nil, err } for _, l := range userLabels { if _, ok := labelsByProject[l.ProjectKey]; !ok { labelsByProject[l.ProjectKey] = []*models.ProjectLabel{l} } else { labelsByProject[l.ProjectKey] = append(labelsByProject[l.ProjectKey], l) } } return labelsByProject, nil } // GetByUserGroupedInverted returns lists of project labels, grouped by their label key func (srv *ProjectLabelService) GetByUserGroupedInverted(userId string) (map[string][]*models.ProjectLabel, error) { projectsByLabel := make(map[string][]*models.ProjectLabel) userLabels, err := srv.GetByUser(userId) if err != nil { return nil, err } for _, l := range userLabels { if _, ok := projectsByLabel[l.Label]; !ok { projectsByLabel[l.Label] = []*models.ProjectLabel{l} } else { projectsByLabel[l.Label] = append(projectsByLabel[l.Label], l) } } return projectsByLabel, 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) srv.notifyUpdate(label, false) 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) srv.notifyUpdate(label, true) return err } func (srv *ProjectLabelService) notifyUpdate(label *models.ProjectLabel, isDelete bool) { name := config.EventProjectLabelCreate if isDelete { name = config.EventProjectLabelDelete } srv.eventBus.Publish(hub.Message{ Name: name, Fields: map[string]interface{}{config.FieldPayload: label, config.FieldUserId: label.UserID}, }) }