Initial commit: Penyerahan final Source code Tugas Akhir

lib/providers/detail_invoice_provider.dart

@@ -0,0 +1,44 @@
+import 'package:flutter/material.dart';
+import 'package:initial_folder/models/detail_invoice_model.dart';
+import 'package:initial_folder/services/detail_invoice_service.dart';
+import 'package:provider/provider.dart';
+
+enum ResultState { loading, noData, hasData, error }
+
+class DetailInvoiceProvider extends ChangeNotifier {
+  final DetailInvoiceService _detailInvoiceService = DetailInvoiceService();
+
+  List<DataDetailInvoiceModel>? _detailInvoice;
+  String? _message;
+  String? _thumbnail;
+  ResultState? _state;
+
+  String? get message => _message;
+  String? get thumbnail => _thumbnail;
+  List<DataDetailInvoiceModel>? get detailInvoice => _detailInvoice;
+  ResultState? get state => _state;
+
+  set selectedThumbnail(String? value) {
+    _thumbnail = value;
+    notifyListeners();
+  }
+
+  Future<dynamic> fetchDetailInvoice(String? orderId) async {
+    try {
+      _state = ResultState.loading;
+      notifyListeners();
+      final data = await _detailInvoiceService.detailInvoice(orderId);
+      if (data.isEmpty) {
+        _state = ResultState.noData;
+        _message = 'Invoice Detail is Empty';
+      } else {
+        _state = ResultState.hasData;
+        _detailInvoice = data;
+      }
+    } catch (e) {
+      _state = ResultState.error;
+      _message = 'Error -> $e';
+    }
+    notifyListeners();
+  }
+}