update bug daashboards

app/Http/Controllers/Api/StatisticsController.php

@@ -106,16 +106,16 @@ public function dashboard()
                 return response()->json(['error' => 'Invalid duration'], 400);
         }
 
-        // SQL date format for grouping
+        // SQL date format for grouping (PostgreSQL TO_CHAR format)
         $dateFormatSQL = match ($format) {
-            'H' => '%H',
-            'd' => '%Y-%m-%d',
-            'M' => '%Y-%m',
-            default => '%Y-%m-%d',
+            'H' => 'HH24',
+            'd' => 'YYYY-MM-DD',
+            'M' => 'YYYY-MM',
+            default => 'YYYY-MM-DD',
         };
 
         // Sales data fetch and map
-        $sales_data = Sale::selectRaw("DATE_FORMAT(created_at, '$dateFormatSQL') as date, SUM(totalAmount) as amount")
+        $sales_data = Sale::selectRaw("TO_CHAR(created_at, '$dateFormatSQL') as date, SUM(\"totalAmount\") as amount")
             ->where('business_id', $business_id)
             ->whereBetween('created_at', [$start, $end])
             ->groupBy('date')
@@ -128,7 +128,7 @@ public function dashboard()
             ->keyBy('date');
 
         // Purchase data fetch and map
-        $purchase_data = Purchase::selectRaw("DATE_FORMAT(created_at, '$dateFormatSQL') as date, SUM(totalAmount) as amount")
+        $purchase_data = Purchase::selectRaw("TO_CHAR(created_at, '$dateFormatSQL') as date, SUM(\"totalAmount\") as amount")
             ->where('business_id', $business_id)
             ->whereBetween('created_at', [$start, $end])
             ->groupBy('date')