feat: payment split

lib/data/datasources/order_remote_datasource.dart

@@ -587,4 +587,39 @@ class OrderRemoteDatasource {
       return const Left('Terjadi kesalahan tak terduga');
     }
   }
+
+  Future<Either<String, PaymentSuccessResponseModel>> createPaymentSplitBill(
+      PaymentSplitBillRequest request) async {
+    final authData = await AuthLocalDataSource().getAuthData();
+    final url = '${Variables.baseUrl}/api/v1/orders/split-bill';
+
+    try {
+      final response = await dio.post(
+        url,
+        data: request.toMap(),
+        options: Options(
+          headers: {
+            'Authorization': 'Bearer ${authData.token}',
+            'Accept': 'application/json',
+            'Content-Type': 'application/json',
+          },
+        ),
+      );
+
+      if (response.statusCode == 200) {
+        return Right(PaymentSuccessResponseModel.fromMap(response.data));
+      } else {
+        return const Left('Gagal membuat pembayaran');
+      }
+    } on DioException catch (e) {
+      final errorMessage =
+          e.response?.data['message'] ?? 'Terjadi kesalahan, coba lagi nanti.';
+      log("💥 Dio error: ${e.message}");
+      log("💥 Dio response: ${e.response?.data}");
+      return Left(errorMessage);
+    } catch (e) {
+      log("💥 Unexpected error: $e");
+      return const Left('Terjadi kesalahan tak terduga');
+    }
+  }
 }

lib/data/models/request/payment_request.dart

@@ -78,3 +78,57 @@ class PaymentOrderItemModel {
         "amount": amount,
       };
 }
+
+class PaymentSplitBillRequest {
+  final String orderId;
+  final String paymentMethodId;
+  final String customerId;
+  final String type; // e.g., "AMOUNT" or "ITEM"
+  final int amount;
+  final List<SplitItem> items;
+
+  PaymentSplitBillRequest({
+    required this.orderId,
+    required this.paymentMethodId,
+    required this.customerId,
+    required this.type,
+    required this.amount,
+    required this.items,
+  });
+
+  Map<String, dynamic> toMap() {
+    Map<String, dynamic> data = {
+      'order_id': orderId,
+      'payment_method_id': paymentMethodId,
+      'customer_id': customerId,
+      'type': type,
+    };
+
+    if (type == "AMOUNT") {
+      data['amount'] = amount;
+    }
+
+    if (type == "ITEM") {
+      data['items'] = items.map((e) => e.toJson()).toList();
+    }
+
+    return data;
+  }
+}
+
+class SplitItem {
+  final String orderItemId;
+  final int quantity;
+
+  SplitItem({
+    required this.orderItemId,
+    required this.quantity,
+  });
+
+  Map<String, dynamic> toJson() {
+    return {
+      'order_item_id': orderItemId,
+      'quantity': quantity,
+    };
+  }
+}