Initial commit: Penyerahan final Source code Tugas Akhir

lib/providers/categories_provider.dart

@@ -0,0 +1,76 @@
+import 'package:flutter/material.dart';
+import 'package:initial_folder/models/catagories_model.dart';
+import 'package:initial_folder/models/subcategories_model.dart';
+import 'package:initial_folder/services/categories_service.dart';
+
+enum ResultState { Loading, NoData, HasData, Error }
+
+class CategoriesProvider with ChangeNotifier {
+  final CategoriesService categoriesService;
+  CategoriesProvider({required this.categoriesService}) {
+    getAllCategories();
+  }
+  List<CategoriesModel> _categories = [];
+  Map<String, List<SubCategoryModel>> _subCategoriesMap = {};
+
+  ResultState? _state;
+
+  String _message = '';
+
+  List<String?> get ids {
+    return _categories.map((category) => category.id).toList();
+  }
+
+  List<String?> get nameCategories {
+    return _categories.map((category) => category.nameCategory).toList();
+  }
+
+  List<CategoriesModel> get result => _categories;
+
+  ResultState? get state => _state;
+
+  String get message => _message;
+
+  String _selectedSubcategoryId = '';
+
+  set categories(List<CategoriesModel> categories) {
+    _categories = categories;
+    notifyListeners();
+  }
+
+  Map<String, List<SubCategoryModel>> get subCategoriesMap => _subCategoriesMap;
+
+  String get selectedSubcategoryId => _selectedSubcategoryId;
+
+  set selectedSubcategoryId(String value) {
+    _selectedSubcategoryId = value;
+    notifyListeners();
+  }
+
+  Future<dynamic> getAllCategories() async {
+    try {
+      _state = ResultState.Loading;
+      notifyListeners();
+      List<CategoriesModel> categories =
+          await categoriesService.getAllCategories();
+      if (categories.isEmpty) {
+        _state = ResultState.NoData;
+        notifyListeners();
+        return _message = 'Empty Data';
+      } else {
+        for (var category in categories) {
+          List<SubCategoryModel> subCategories =
+              await categoriesService.getSubCategories(category.id!);
+          category.subCategories = subCategories;
+        }
+        _categories = categories;
+        _state = ResultState.HasData;
+        notifyListeners();
+      }
+    } catch (e) {
+      _state = ResultState.Error;
+      notifyListeners();
+      return _message = 'Error --> $e';
+    }
+  }
+}