Refactored events to notifications on front-end, added prefutils to read

shared  preferences.

frontend/lib/main.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
+import 'package:frontend/utils/pref_utils.dart';
 import 'package:provider/provider.dart';
 import 'navigation.dart';
 
-void main() {
+void main() async {
+  PrefUtil.init();
   runApp(const MainApp());
 }
 
@@ -17,7 +19,7 @@ final class MainApp extends StatelessWidget {
         title: 'OOTT',
         theme: ThemeData(
           colorScheme: ColorScheme.fromSeed(
-            seedColor: Colors.green,
+            seedColor: Colors.deepOrange,
             brightness: Brightness.dark,
           ),
         ),

frontend/lib/model/notification.dart

@@ -1,6 +1,6 @@
 import 'notification_type.dart';
 
-class Event {
+class Notification {
   int id;
   String title;
   String body;
@@ -8,7 +8,7 @@ class Event {
   NotificationType notificationType;
   DateTime createdOn;
 
-  Event({
+  Notification({
     required this.id,
     required this.title,
     required this.body,
@@ -17,7 +17,7 @@ class Event {
     this.isNew = true,
   });
 
-  Event.fromJson(Map<String, dynamic> json)
+  Notification.fromJson(Map<String, dynamic> json)
     : id = json['id'] as int,
       createdOn = DateTime.parse(json['created_on'] as String),
       notificationType = NotificationType.fromString(

frontend/lib/navigation.dart

@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
-import 'events/events_list.dart';
+import 'notifications/notification_list.dart';
 
 // Routes definitions
 final GoRouter router = GoRouter(
-  initialLocation: '/events',
+  initialLocation: '/notifications',
   routes: [
     ShellRoute(
       builder: (context, state, child) {
@@ -12,9 +12,9 @@ final GoRouter router = GoRouter(
       },
       routes: [
         GoRoute(
-          path: '/events',
-          name: 'events',
-          builder: (context, state) => EventsList(),
+          path: '/notifications',
+          name: 'notifications',
+          builder: (context, state) => NotificationList(),
         ),
         GoRoute(
           path: '/devices',
@@ -65,7 +65,7 @@ class MainShell extends StatelessWidget {
                     NavigationRailDestination(
                       icon: Icon(Icons.notifications_outlined),
                       selectedIcon: Icon(Icons.notifications),
-                      label: Text('Events'),
+                      label: Text('Notifications'),
                     ),
                     NavigationRailDestination(
                       icon: Icon(Icons.devices_other_outlined),
@@ -105,7 +105,7 @@ class MainShell extends StatelessWidget {
 
 int _calculateSelectedIndex(BuildContext context) {
   final location = GoRouterState.of(context).uri.path;
-  if (location.startsWith('/events')) return 0;
+  if (location.startsWith('/notifications')) return 0;
   if (location.startsWith('/devices')) return 1;
   if (location.startsWith('/settings')) return 2;
   if (location.startsWith('/about')) return 3;
@@ -115,7 +115,7 @@ int _calculateSelectedIndex(BuildContext context) {
 void _onDestinationSelected(int index, BuildContext context) {
   switch (index) {
     case 0:
-      context.go('/events');
+      context.go('/notifications');
       break;
     case 1:
       context.go('/devices');

frontend/lib/notifications/notification_list.dart

@@ -1,16 +1,16 @@
 import 'package:flutter/material.dart';
 import '../utils/friendly_date_formatter.dart';
-import '../model/event.dart';
+import '../model/notification.dart' as oott_model;
 import '../utils/oott_api.dart';
 
-class EventsList extends StatefulWidget {
+class NotificationList extends StatefulWidget {
   @override
-  _EventListState createState() => _EventListState();
+  _NotificationListState createState() => _NotificationListState();
 }
 
-class _EventListState extends State<EventsList> {
+class _NotificationListState extends State<NotificationList> {
   bool _isLoading = true;
-  List<Event>? _events;
+  List<oott_model.Notification>? _events;
 
   @override
   void initState() {
@@ -27,7 +27,7 @@ class _EventListState extends State<EventsList> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      appBar: AppBar(title: const Text('Events')),
+      appBar: AppBar(title: const Text('Notifications')),
       body: _isLoading
           ? const Center(child: CircularProgressIndicator())
           : ListView.separated(

frontend/lib/utils/oott_api.dart

@@ -1,28 +1,42 @@
-import 'dart:convert';
 import 'dart:io';
 
 import 'package:dio/dio.dart';
-import 'package:frontend/model/event.dart';
+import 'package:encrypter/encrypter/xor.dart';
+import 'package:frontend/utils/pref_utils.dart';
+import '../model/notification.dart';
 
 class BackendAPI {
-  BackendAPI._singleton();
+  static final BackendAPI _instance = BackendAPI._internal();
 
-  static final BackendAPI instance = BackendAPI._singleton();
+  static BackendAPI get instance => _instance;
 
-  static final String _baseUrl = 'http://localhost:3000/api';
-  static final String _apiKey = 'super_secret';
+  BackendAPI._internal() {
+    // _baseUrl =
+    // PrefUtil.getValue("base_url", "http://localhost:3000/api") as String;
+    // _apiKey = XOR().xorDecode(PrefUtil.getValue("api_key", "") as String);
 
-  final Dio _dio = Dio(
-    BaseOptions(
-      baseUrl: _baseUrl,
-      headers: {
-        HttpHeaders.contentTypeHeader: 'application/json',
-        HttpHeaders.authorizationHeader: 'Bearer $_apiKey',
-      },
-    ),
-  );
+    _baseUrl = "http://localhost:3000/api";
+    _apiKey = "super_secret";
 
-  Future<List<Event>> listNotifications() async {
+    print('Base URL: $_baseUrl');
+    print('API KEY $_apiKey');
+
+    _dio = Dio(
+      BaseOptions(
+        baseUrl: _baseUrl,
+        headers: {
+          HttpHeaders.contentTypeHeader: 'application/json',
+          HttpHeaders.authorizationHeader: 'Bearer $_apiKey',
+        },
+      ),
+    );
+  }
+
+  late String _baseUrl;
+  late String _apiKey;
+  late Dio _dio;
+
+  Future<List<Notification>> listNotifications() async {
     print('About to call /notifications');
 
     Response response;
@@ -33,8 +47,8 @@ class BackendAPI {
     List<dynamic> list = response.data;
     print('List contains ' + list.length.toString() + ' items');
 
-    List<Event> events = List<Event>.from(
-      list.map((item) => Event.fromJson(item)),
+    List<Notification> events = List<Notification>.from(
+      list.map((item) => Notification.fromJson(item)),
     );
 
     print('Parsed ' + events.length.toString() + ' events');

frontend/lib/utils/pref_utils.dart

@@ -0,0 +1,40 @@
+import 'package:shared_preferences/shared_preferences.dart';
+
+class PrefUtil {
+  static late final SharedPreferences preferences;
+  static bool _init = false;
+  static Future init() async {
+    if (_init) return;
+    preferences = await SharedPreferences.getInstance();
+    _init = true;
+    return preferences;
+  }
+
+  static void setValue(String key, Object value) {
+    switch (value.runtimeType) {
+      case String:
+        preferences.setString(key, value as String);
+        break;
+      case bool:
+        preferences.setBool(key, value as bool);
+        break;
+      case int:
+        preferences.setInt(key, value as int);
+        break;
+      default:
+    }
+  }
+
+  static Object getValue(String key, Object defaultValue) {
+    switch (defaultValue.runtimeType) {
+      case String:
+        return preferences.getString(key) ?? "";
+      case bool:
+        return preferences.getBool(key) ?? false;
+      case int:
+        return preferences.getInt(key) ?? 0;
+      default:
+        return defaultValue;
+    }
+  }
+}