ui: update ProductPerformanceProfitability page to enhance table views and tabs management

svc/routes/product_performance.go

@@ -261,6 +261,47 @@ func GetProductPerformanceSalesBreakdownHandler(pg *sql.DB) http.HandlerFunc {
 	}
 }
 
+func GetProductPerformanceGroupedHandler(pg *sql.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json; charset=utf-8")
+		traceID := utils.TraceIDFromRequest(r)
+		ctx, cancel := context.WithTimeout(utils.ContextWithTraceID(r.Context(), traceID), 90*time.Second)
+		defer cancel()
+
+		expanded := map[string]bool{}
+		for _, key := range strings.Split(r.URL.Query().Get("expanded_keys"), ",") {
+			key = strings.TrimSpace(key)
+			if key != "" {
+				expanded[key] = true
+			}
+		}
+
+		rows, err := queries.ListProductPerformanceGrouped(ctx, pg, queries.ProductPerformanceGroupedRequest{
+			Mode:         strings.TrimSpace(r.URL.Query().Get("mode")),
+			GroupLevels:  splitCSVQuery(r.URL.Query().Get("group_levels")),
+			ExpandedKeys: expanded,
+			Limit:        intQuery(r, "limit", 50000),
+		})
+		if err != nil {
+			http.Error(w, "urun performans grup verisi alinamadi: "+err.Error(), http.StatusInternalServerError)
+			return
+		}
+		_ = json.NewEncoder(w).Encode(rows)
+	}
+}
+
+func splitCSVQuery(value string) []string {
+	parts := strings.Split(value, ",")
+	out := make([]string, 0, len(parts))
+	for _, part := range parts {
+		part = strings.TrimSpace(part)
+		if part != "" {
+			out = append(out, part)
+		}
+	}
+	return out
+}
+
 func intQuery(r *http.Request, key string, fallback int) int {
 	raw := strings.TrimSpace(r.URL.Query().Get(key))
 	if raw == "" {