Add: support delete tag and its references

pkg/api/api.go

@@ -99,6 +99,7 @@ func NewAPI(config Config) (*API, error) {
 	apiMux.HandleFunc("/put_tag_on_file", api.HandlePutTagOnFile)
 	apiMux.HandleFunc("/get_tags_on_file", api.HandleGetTagsOnFile)
 	apiMux.HandleFunc("/delete_tag_on_file", api.HandleDeleteTagOnFile)
+	apiMux.HandleFunc("/delete_tag", api.HandleDeleteTag)
 	// folder
 	apiMux.HandleFunc("/update_foldername", api.HandleUpdateFoldername)
 	// review

pkg/api/handle_tag.go

@@ -125,3 +125,34 @@ func (api *API) HandleUpdateTag(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 }
+
+type DeleteTagRequest struct {
+	ID int64 `json:"id"`
+}
+
+func (api *API) HandleDeleteTag(w http.ResponseWriter, r *http.Request) {
+	// check if user is admin
+	err := api.CheckAdmin(w, r)
+	if err != nil {
+		api.HandleError(w, r, err)
+		return
+	}
+
+	req := &DeleteTagRequest{}
+	err = json.NewDecoder(r.Body).Decode(req)
+	if err != nil {
+		api.HandleError(w, r, err)
+		return
+	}
+
+	err = api.Db.DeleteTag(req.ID)
+	if err != nil {
+		api.HandleError(w, r, err)
+		return
+	}
+
+	log.Println("Successfully deleted tag and its references", req.ID)
+
+	api.HandleOK(w, r)
+}
+