feat: add total count at order page

lib/infrastructure/order/datasource/remote_data_provider.dart

@@ -43,9 +43,9 @@ class OrderRemoteDataProvider {
         params['search'] = search;
       }
 
-      // if (outletId != null) {
-      //   params['outlet_id'] = outletId;
-      // }
+      if (outletId != null) {
+        params['outlet_id'] = outletId;
+      }
 
       final response = await _apiClient.get(
         ApiPath.order,
@@ -67,4 +67,47 @@ class OrderRemoteDataProvider {
       return DC.error(OrderFailure.serverError(e));
     }
   }
+
+  /// Backend belum punya endpoint ringkasan order, jadi jumlahnya diambil
+  /// dari `total_count` list order (limit 1 supaya payload kecil).
+  Future<DC<OrderFailure, int>> fetchTotalCount({
+    String? status,
+    String? outletId,
+    required DateTime dateFrom,
+    required DateTime dateTo,
+  }) async {
+    try {
+      Map<String, dynamic> params = {
+        'page': 1,
+        'limit': 1,
+        'date_from': dateFrom.toServerDate,
+        'date_to': dateTo.toServerDate,
+      };
+
+      if (status != null && status.isNotEmpty) {
+        params['status'] = status;
+      }
+
+      if (outletId != null) {
+        params['outlet_id'] = outletId;
+      }
+
+      final response = await _apiClient.get(
+        ApiPath.order,
+        params: params,
+        headers: getAuthorizationHeader(),
+      );
+
+      if (response.data['data'] == null) {
+        return DC.error(OrderFailure.empty());
+      }
+
+      final total = response.data['data']['total_count'] as num? ?? 0;
+
+      return DC.data(total.toInt());
+    } on ApiFailure catch (e, s) {
+      log('fetchOrderTotalCountError', name: _logName, error: e, stackTrace: s);
+      return DC.error(OrderFailure.serverError(e));
+    }
+  }
 }