Fix product performance grouped JSON build

svc/routes/production_product_costing.go

@@ -330,6 +330,32 @@ func GetProductionHasCostHistoryHandler(w http.ResponseWriter, r *http.Request)
 	_ = json.NewEncoder(w).Encode(list)
 }
 
+// GET /api/pricing/production-product-costing/firm-cost-history
+func GetProductionFirmCostHistoryHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	uretimDB := db.GetUretimDB()
+	if uretimDB == nil {
+		http.Error(w, "URETIM veritabani baglantisi aktif degil", http.StatusServiceUnavailable)
+		return
+	}
+
+	nFirmaID, _ := strconv.Atoi(strings.TrimSpace(r.URL.Query().Get("n_firma_id")))
+	excludeOnMLNo, _ := strconv.Atoi(strings.TrimSpace(r.URL.Query().Get("exclude_onml_no")))
+	limit := parsePositiveIntOrDefault(r.URL.Query().Get("limit"), 100)
+	if nFirmaID <= 0 {
+		http.Error(w, "n_firma_id zorunlu ve pozitif sayi olmali", http.StatusBadRequest)
+		return
+	}
+
+	rows, err := queries.GetProductionFirmCostHistory(r.Context(), uretimDB, nFirmaID, excludeOnMLNo, limit)
+	if err != nil {
+		log.Printf("[ProductionFirmCostHistory] query error: %v", err)
+		http.Error(w, "Veritabani hatasi", http.StatusInternalServerError)
+		return
+	}
+	_ = json.NewEncoder(w).Encode(rows)
+}
+
 // GET /api/pricing/production-product-costing/has-cost-detail-groups
 func GetProductionHasCostDetailGroupsHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=utf-8")