Added API integration support

lib/constants/colors.dart

@@ -20,4 +20,4 @@ class AppColors {
   }
 
   const AppColors();
-}
+}

lib/main.dart

@@ -1,12 +1,12 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:todo/repositories/sqlite_task_repository.dart';
+import 'package:todo/repositories/api_task_repository.dart';
 import 'package:todo/screens/home_screen.dart';
 
 void main() {
   WidgetsFlutterBinding.ensureInitialized();
   runApp(ChangeNotifierProvider(
-    create: (context) => SQLiteTaskRepository(),
+    create: (context) => APITaskRepository(),
     child: const App(),
   ));
 }

lib/models/task.dart

@@ -1,5 +1,9 @@
+import 'package:json_annotation/json_annotation.dart';
 import 'package:uuid/uuid.dart';
 
+part 'task.g.dart';
+
+@JsonSerializable()
 class Task {
   String id;
   String title;
@@ -19,11 +23,33 @@ class Task {
     this.rewardInSatoshis = 0,
   }) : id = id ?? const Uuid().v4();
 
-  Map<String, dynamic> toMap() {
+  factory Task.fromJson(Map<String, dynamic> json) {
+    return Task(
+      id: json['id']?.toString(), // Convert int to String if necessary
+      title: json['title'] as String,
+      description: json['description'] as String,
+      createdAt: DateTime.parse(json['created_at'] as String),
+      isCompleted: json['is_completed'] as bool,
+      rewardInSatoshis: json['reward_in_satoshis'] ?? 0,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
     return {
       'id': id,
       'title': title,
       'description': description,
+      'created_at': createdAt.toIso8601String(),
+      'is_completed': isCompleted,
+      'reward_in_satoshis': rewardInSatoshis,
+    };
+  }
+
+  Map<String, dynamic> toMap() {
+    return {
+      'id': id.toString(),
+      'title': title,
+      'description': description,
       'createdAt': createdAt.toIso8601String(),
       'completedAt': completedAt?.toIso8601String(),
       'isCompleted': isCompleted,
@@ -33,7 +59,7 @@ class Task {
 
   factory Task.fromMap(Map<String, dynamic> map) {
     return Task(
-      id: map['id'],
+      id: map['id'].toString(),
       title: map['title'],
       description: map['description'],
       createdAt: DateTime.parse(map['createdAt']),

lib/repositories/api_task_repository.dart

@@ -0,0 +1,123 @@
+import 'dart:convert';
+
+import 'package:flutter/cupertino.dart';
+import 'package:http/http.dart' as http;
+
+import '../models/task.dart';
+import 'task_repository.dart';
+
+class APITaskRepository extends ChangeNotifier implements TaskRepository {
+  @override
+  Future<List<Task>> getAllTasks() async {
+    List<Task> tasks = [];
+    try {
+      final response = await http.get(Uri.parse('http://localhost:8080/tasks'),
+          headers: <String, String>{
+            'Content-Type': 'application/json',
+          });
+
+      if (response.statusCode == 200) {
+        Iterable jsonResponse = jsonDecode(response.body);
+        tasks = jsonResponse.map((task) => Task.fromJson(task)).toList();
+      }
+      return tasks;
+    } catch (error) {
+      throw Exception(error);
+    }
+  }
+
+  @override
+  Future<List<Task>> getCompletedTasks() async {
+    List<Task> tasks = [];
+    try {
+      final response = await http.get(
+          Uri.parse('http://localhost:8080/tasks?completed=true'),
+          headers: <String, String>{
+            'Content-Type': 'application/json',
+          });
+
+      if (response.statusCode == 200) {
+        Iterable jsonResponse = jsonDecode(response.body);
+        tasks = jsonResponse.map((task) => Task.fromJson(task)).toList();
+      }
+
+      return tasks;
+    } catch (error) {
+      throw Exception(error);
+    }
+  }
+
+  @override
+  Future<Task?> getTaskById(String id) async {
+    Task? task;
+    try {
+      final response = await http.get(
+          Uri.parse('http://localhost:8080/task/$id'),
+          headers: <String, String>{
+            'Content-Type': 'application/json',
+          });
+
+      if (response.statusCode == 200) {
+        Iterable jsonResponse = jsonDecode(response.body);
+        task = jsonResponse.map((task) => Task.fromJson(task)) as Task;
+      }
+      return task;
+    } catch (error) {
+      throw Exception(error);
+    }
+  }
+
+  @override
+  Future<void> addTask(Task task) async {
+    try {
+      await http.post(Uri.parse('http://localhost:8080/task'),
+          headers: <String, String>{
+            'Content-Type': 'application/json',
+          },
+          body: jsonEncode(<String, dynamic>{
+            'title': task.title,
+            'description': 'test',
+            'created_at': task.createdAt.toUtc().toIso8601String(),
+            'is_completed': task.isCompleted,
+            'reward_in_sats': task.rewardInSatoshis
+          }));
+    } catch (error) {
+      throw Exception(error);
+    }
+    notifyListeners();
+  }
+
+  @override
+  Future<void> updateTask(Task task) async {
+    String taskId = task.id;
+    try {
+      await http.put(Uri.parse('http://localhost:8080/task/$taskId'),
+          headers: <String, String>{
+            'Content-Type': 'application/json',
+          },
+          body: jsonEncode(<String, dynamic>{
+            'title': task.title,
+            'description': task.description,
+            'created_at': task.createdAt.toUtc().toIso8601String(),
+            'is_completed': task.isCompleted,
+            'reward_in_sats': task.rewardInSatoshis
+          }));
+    } catch (error) {
+      throw Exception(error);
+    }
+    notifyListeners();
+  }
+
+  @override
+  Future<void> deleteTask(String id) async {
+    try {
+      await http.delete(Uri.parse('http://localhost:8080/task/$id'),
+          headers: <String, String>{
+            'Content-Type': 'application/json',
+          });
+    } catch (error) {
+      throw Exception(error);
+    }
+    notifyListeners();
+  }
+}

lib/widgets/task_add_widget.dart

@@ -1,9 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:todo/models/task.dart';
-import 'package:todo/repositories/task_repository.dart';
 
-import '../repositories/sqlite_task_repository.dart';
+import '../repositories/api_task_repository.dart';
 
 class AddTask extends StatefulWidget {
   const AddTask({
@@ -15,13 +14,13 @@ class AddTask extends StatefulWidget {
 
 class _AddTaskState extends State<AddTask> {
   final textController = TextEditingController();
-  late SQLiteTaskRepository taskRepository;
+  late APITaskRepository taskRepository;
   late Future<List<Task>> taskListFuture;
 
   @override
   void initState() {
     super.initState();
-    taskRepository = SQLiteTaskRepository();
+    taskRepository = APITaskRepository();
     taskListFuture = taskRepository.getAllTasks();
   }
 
@@ -58,12 +57,12 @@ class _AddTaskState extends State<AddTask> {
                     if (textController.text.isNotEmpty) {
                       Task task = Task(
                         title: textController.text,
-                        description: '',
+                        description: 'test',
                         createdAt: DateTime.now(),
                         isCompleted: false,
                         rewardInSatoshis: 0,
                       );
-                      await Provider.of<SQLiteTaskRepository>(context,
+                      await Provider.of<APITaskRepository>(context,
                               listen: false)
                           .addTask(task);
                       textController.clear();