feat(dashboard): #192 include treemap of treasure chests

internal/handler/dashboard.go

@@ -29,7 +29,8 @@ func NewDashboard(r *Render, d *service.Dashboard) Dashboard {
 
 func (handler DashboardImpl) Handle(router *http.ServeMux) {
 	router.Handle("GET /dashboard", handler.handleDashboard())
-	router.Handle("GET /dashboard/dataset", handler.handleDashboardDataset())
+	router.Handle("GET /dashboard/main-chart", handler.handleDashboardMainChart())
+	router.Handle("GET /dashboard/treasure-chests", handler.handleDashboardTreasureChests())
 }
 
 func (handler DashboardImpl) handleDashboard() http.HandlerFunc {
@@ -47,7 +48,7 @@ func (handler DashboardImpl) handleDashboard() http.HandlerFunc {
 	}
 }
 
-func (handler DashboardImpl) handleDashboardDataset() http.HandlerFunc {
+func (handler DashboardImpl) handleDashboardMainChart() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		updateSpan(r)
 
@@ -105,3 +106,56 @@ func (handler DashboardImpl) handleDashboardDataset() http.HandlerFunc {
 		}
 	}
 }
+
+func (handler DashboardImpl) handleDashboardTreasureChests() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		updateSpan(r)
+
+		user := middleware.GetUser(r)
+
+		treeList, err := handler.d.TreasureChests(r.Context(), user)
+		if err != nil {
+			handleError(w, r, err)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+
+		data := ""
+		for _, item := range treeList {
+			children := ""
+			for _, child := range item.Children {
+				if child.Value < 0 {
+					children += fmt.Sprintf(`{"name":"%s\n%.2f €","value":%d},`, child.Name, float64(child.Value)/100, -child.Value)
+				} else {
+					children += fmt.Sprintf(`{"name":"%s\n%.2f €","value":%d},`, child.Name, float64(child.Value)/100, child.Value)
+				}
+			}
+			children = children[:len(children)-1]
+			data += fmt.Sprintf(`{"name":"%s","children":[%s]},`, item.Name, children)
+		}
+		data = data[:len(data)-1]
+
+		_, err = fmt.Fprintf(w, `
+			{
+				"aria": {
+					"enabled": true,
+					"decal": {
+						"show": false
+					}
+				},
+				"series": [
+					{
+						"data": [%s],
+						"type": "treemap",
+						"name": "Savings"
+					}
+				]
+			}
+		`, data)
+		if err != nil {
+			slog.InfoContext(r.Context(), "could not write response", "err", err)
+		}
+	}
+}