progress on home page

lib/screens/home/home_controller.dart

@@ -0,0 +1,75 @@
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:logger/logger.dart';
+import 'package:freezed_annotation/freezed_annotation.dart';
+import 'package:qpay/http/http.dart';
+
+part 'home_controller.freezed.dart';
+part 'home_controller.g.dart';
+
+class HomeScreenModel {
+  List<dynamic> transactions = [];
+  List<Category> categories = [];
+  dynamic account = {};
+  dynamic profile = {};
+  bool isLoading = false;
+  bool isLoggedIn = false;
+  String? errorMessage;
+}
+
+@freezed
+abstract class Category with _$Category {
+  const factory Category({
+    required String name,
+    required String description,
+    required String? image,
+    required String label,
+  }) = _Category;
+
+  factory Category.fromJson(Map<String, dynamic> json) =>
+      _$CategoryFromJson(json);
+}
+
+var logger = Logger(printer: PrettyPrinter());
+
+class HomeController extends ChangeNotifier {
+  
+  final HomeScreenModel model = HomeScreenModel();
+  final Http http = Http();
+
+  Future<void> getCategories() async {
+    // activate skeletonizer
+    model.categories = getFakeCategoryData();
+    // Simulate fetching categories
+    try {
+      model.isLoading = true;
+      List<dynamic> response = await http.get('/categories');
+      model.categories = response.map((e) => Category.fromJson(e)).toList();
+    } on DioException catch (e) {
+      logger.e(e);
+      model.errorMessage = e.type.name;
+      model.categories = [];
+    }
+
+    model.isLoading = false;
+    notifyListeners();
+  }
+
+  // required by skeletonizer
+  List<Category> getFakeCategoryData() {
+    return [
+      Category(
+        name: 'Electricity',
+        description: 'Pay your electricity bills easily',
+        image: 'assets/images/electricity.png',
+        label: 'Electricity',
+      ),
+      Category(
+        name: 'Internet',
+        description: 'Pay your internet bills easily',
+        image: 'assets/images/internet.png',
+        label: 'Internet',
+      ),
+    ];
+  }
+}