New Feature:

- Push notification!

android/app/build.gradle

@@ -30,6 +30,7 @@ android {
     ndkVersion flutter.ndkVersion
 
     compileOptions {
+        coreLibraryDesugaringEnabled true
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
@@ -51,6 +52,7 @@ android {
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
+        multiDexEnabled true
     }
 
     buildTypes {
@@ -68,4 +70,10 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
+
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
 }

android/app/proguard-rules.pro

@@ -0,0 +1,27 @@
+## Gson rules
+# Gson uses generic type information stored in a class file when working with fields. Proguard
+# removes such information by default, so configure it to keep all of it.
+-keepattributes Signature
+
+# For using GSON @Expose annotation
+-keepattributes *Annotation*
+
+# Gson specific classes
+-dontwarn sun.misc.**
+#-keep class com.google.gson.stream.** { *; }
+
+# Prevent proguard from stripping interface information from TypeAdapter, TypeAdapterFactory,
+# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
+-keep class * extends com.google.gson.TypeAdapter
+-keep class * implements com.google.gson.TypeAdapterFactory
+-keep class * implements com.google.gson.JsonSerializer
+-keep class * implements com.google.gson.JsonDeserializer
+
+# Prevent R8 from leaving Data object members always null
+-keepclassmembers,allowobfuscation class * {
+  @com.google.gson.annotations.SerializedName <fields>;
+}
+
+# Retain generic signatures of TypeToken and its subclasses with R8 version 3.0 and higher.
+-keep,allowobfuscation,allowshrinking class com.google.gson.reflect.TypeToken
+-keep,allowobfuscation,allowshrinking class * extends com.google.gson.reflect.TypeToken

android/app/src/main/AndroidManifest.xml

@@ -11,7 +11,9 @@
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"
-            android:windowSoftInputMode="adjustResize">
+            android:windowSoftInputMode="adjustResize"
+            android:showWhenLocked="true"
+            android:turnScreenOn="true">
             <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
                  while the Flutter UI initializes. After that, this theme continues
@@ -30,6 +32,11 @@
         <meta-data
             android:name="flutterEmbedding"
             android:value="2" />
+        <service
+            android:name="com.dexterous.flutterlocalnotifications.ForegroundService"        
+            android:exported="false"
+            android:stopWithTask="false"/>
     </application>
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 </manifest>

android/app/src/main/res/raw/keep.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools"
+    tools:keep="@drawable/*" />

ios/Runner/AppDelegate.swift

@@ -7,7 +7,17 @@ import Flutter
     _ application: UIApplication,
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
+    // This is required to make any communication available in the action isolate.
+    FlutterLocalNotificationsPlugin.setPluginRegistrantCallback { (registry) in
+      GeneratedPluginRegistrant.register(with: registry)
+    }
+
     GeneratedPluginRegistrant.register(with: self)
+
+    if #available(iOS 10.0, *) {
+      UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
+    }
+
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
 }

lib/home/cubit/home_cubit.dart

@@ -1,7 +1,7 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-13 14:02:28
- * @LastEditTime : 2022-10-22 21:08:39
+ * @LastEditTime : 2022-10-23 22:37:55
  * @Description  : 
  */
 
@@ -9,18 +9,22 @@ import 'dart:async';
 
 import 'package:bloc/bloc.dart';
 import 'package:flutter/cupertino.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tcp_client/home/cubit/home_state.dart';
 import 'package:tcp_client/repositories/local_service_repository/local_service_repository.dart';
 import 'package:tcp_client/repositories/tcp_repository/models/tcp_request.dart';
 import 'package:tcp_client/repositories/tcp_repository/models/tcp_response.dart';
 import 'package:tcp_client/repositories/tcp_repository/tcp_repository.dart';
+import 'package:tcp_client/repositories/user_repository/user_repository.dart';
 
 class HomeCubit extends Cubit<HomeState> {
   HomeCubit({
     required this.localServiceRepository,
     required this.tcpRepository,
-    required this.pageController
+    required this.pageController,
+    required this.localNotificationsPlugin,
+    required this.userRepository
   }): super(const HomeState(page: HomePagePosition.message, status: HomePageStatus.initializing)) {
     pageController.addListener(() {
       emit(state.copyWith(page: HomePagePosition.fromValue((pageController.page ?? 0).round())));
@@ -59,7 +63,9 @@ class HomeCubit extends Cubit<HomeState> {
   final LocalServiceRepository localServiceRepository;
   final TCPRepository tcpRepository;
   final PageController pageController;
+  final UserRepository userRepository;
   late final StreamSubscription subscription;
+  final FlutterLocalNotificationsPlugin localNotificationsPlugin;
 
   void switchPage(HomePagePosition newPage) {
     pageController.animateToPage(
@@ -77,6 +83,36 @@ class HomeCubit extends Cubit<HomeState> {
       case TCPResponseType.forwardMessage: {
         response as ForwardMessageResponse;
         await localServiceRepository.storeMessages([response.message]);
+        var curUser = (await SharedPreferences.getInstance()).getInt('userid');
+        if(response.message.senderID != curUser) {
+          //Push notification via flutter local notification
+          const androidNotificationDetails = AndroidNotificationDetails(
+            '0',
+            'New Messages',
+            channelDescription: 'New messages',
+            importance: Importance.max,
+            priority: Priority.max,
+            enableVibration: true,
+            enableLights: true,
+            visibility: NotificationVisibility.private
+          );
+          const iosNotificationDetails = DarwinNotificationDetails();
+          const linuxNotificationDetails = LinuxNotificationDetails();
+          const notificationDetails = NotificationDetails(
+            android: androidNotificationDetails,
+            iOS: iosNotificationDetails,
+            macOS: iosNotificationDetails,
+            linux: linuxNotificationDetails
+          );
+          var userName = userRepository.getUserInfo(userid: response.message.senderID).userName;
+          await localNotificationsPlugin.show(
+            response.message.contentmd5.hashCode,
+            'New Message',
+            '$userName: ${response.message.contentDecoded}',
+            notificationDetails,
+            payload: response.message.contentmd5
+          );
+        }
         break;
       }
       case TCPResponseType.fetchMessage: {

lib/home/home_page.dart

@@ -1,12 +1,13 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-11 11:05:08
- * @LastEditTime : 2022-10-23 12:14:36
+ * @LastEditTime : 2022-10-23 22:37:02
  * @Description  : 
  */
 
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tcp_client/home/cubit/home_cubit.dart';
 import 'package:tcp_client/home/cubit/home_state.dart';
@@ -27,6 +28,7 @@ class HomePage extends StatelessWidget with WindowListener {
     required this.userID,
     required this.localServiceRepository,
     required this.tcpRepository,
+    required this.localNotificationsPlugin,
     super.key
   });
   //TODO: listen to file storage
@@ -34,15 +36,18 @@ class HomePage extends StatelessWidget with WindowListener {
   final int userID;
   final LocalServiceRepository localServiceRepository;
   final TCPRepository tcpRepository;
+  final FlutterLocalNotificationsPlugin localNotificationsPlugin;
 
   static Route<void> route({
     required int userID,
     required LocalServiceRepository localServiceRepository,
-    required TCPRepository tcpRepository
+    required TCPRepository tcpRepository,
+    required FlutterLocalNotificationsPlugin localNotificationsPlugin,
   }) => MaterialPageRoute<void>(builder: (context) => HomePage(
     userID: userID,
     localServiceRepository: localServiceRepository,
     tcpRepository: tcpRepository,
+    localNotificationsPlugin: localNotificationsPlugin,
   ));
 
   @override
@@ -76,7 +81,9 @@ class HomePage extends StatelessWidget with WindowListener {
             create: (context) => HomeCubit(
               localServiceRepository: localServiceRepository,
               tcpRepository: tcpRepository,
-              pageController: PageController()
+              pageController: PageController(),
+              localNotificationsPlugin: localNotificationsPlugin,
+              userRepository: context.read<UserRepository>()
             ),
           )
         ],

lib/home/view/profile_page/profile_page.dart

@@ -1,7 +1,7 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-12 23:36:12
- * @LastEditTime : 2022-10-20 11:45:15
+ * @LastEditTime : 2022-10-23 22:10:44
  * @Description  : 
  */
 
@@ -57,7 +57,8 @@ class MyProfilePage extends StatelessWidget {
             Future.delayed(const Duration(seconds: 1)).then((_) {
               Navigator.of(context).pushAndRemoveUntil(LoginPage.route(
                 localServiceRepository: context.read<LocalServiceRepository>(), 
-                tcpRepository: context.read<TCPRepository>()
+                tcpRepository: context.read<TCPRepository>(),
+                localNotificationsPlugin: context.read<HomeCubit>().localNotificationsPlugin
               ), (route) => false);
             });
           }

lib/login/login_page.dart

@@ -1,12 +1,13 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-12 15:06:30
- * @LastEditTime : 2022-10-23 10:15:11
+ * @LastEditTime : 2022-10-23 22:12:07
  * @Description  : 
  */
 
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:formz/formz.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tcp_client/home/home_page.dart';
@@ -21,19 +22,23 @@ class LoginPage extends StatelessWidget {
   const LoginPage({
     required this.localServiceRepository,
     required this.tcpRepository,
+    required this.localNotificationsPlugin,
     super.key
   });
 
   static Route<void> route({
     required LocalServiceRepository localServiceRepository,
-    required TCPRepository tcpRepository
+    required TCPRepository tcpRepository,
+    required FlutterLocalNotificationsPlugin localNotificationsPlugin,
   }) => MaterialPageRoute<void>(builder: (context) => LoginPage(
     localServiceRepository: localServiceRepository,
-    tcpRepository: tcpRepository
+    tcpRepository: tcpRepository,
+    localNotificationsPlugin: localNotificationsPlugin,
   ));
 
   final LocalServiceRepository localServiceRepository;
   final TCPRepository tcpRepository;
+  final FlutterLocalNotificationsPlugin localNotificationsPlugin;
 
   @override
   Widget build(BuildContext context) {
@@ -64,7 +69,8 @@ class LoginPage extends StatelessWidget {
                 Navigator.of(context).pushReplacement(HomePage.route(
                   userID: userID,
                   localServiceRepository: localServiceRepository,
-                  tcpRepository: tcpRepository
+                  tcpRepository: tcpRepository,
+                  localNotificationsPlugin: localNotificationsPlugin
                 ));
               });
             }
@@ -96,7 +102,11 @@ class LoginPage extends StatelessWidget {
                         const Text('Does not have an account?'),
                         const SizedBox(width: 8,),
                         TextButton(
-                          onPressed: () => Navigator.of(context).push(RegisterPage.route(localServiceRepository: localServiceRepository, tcpRepository: tcpRepository)), 
+                          onPressed: () => Navigator.of(context).push(RegisterPage.route(
+                            localServiceRepository: localServiceRepository, 
+                            tcpRepository: tcpRepository,
+                            localNotificationsPlugin: localNotificationsPlugin
+                          )), 
                           style: ButtonStyle(
                             overlayColor: MaterialStateProperty.all(Colors.transparent),
                             foregroundColor: MaterialStateProperty.all(Colors.blue[800])

lib/main.dart

@@ -1,7 +1,7 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-10 08:04:53
- * @LastEditTime : 2022-10-23 12:18:17
+ * @LastEditTime : 2022-10-23 22:26:44
  * @Description  : 
  */
 import 'package:flutter/gestures.dart';
@@ -13,8 +13,33 @@ import 'package:tcp_client/initialization/cubit/initialization_cubit.dart';
 import 'package:tcp_client/initialization/cubit/initialization_state.dart';
 import 'package:tcp_client/initialization/initialization_page.dart';
 import 'package:tcp_client/login/login_page.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+
+final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = 
+  FlutterLocalNotificationsPlugin();
 
 void main() async {
+  // needed if you intend to initialize in the `main` function
+  WidgetsFlutterBinding.ensureInitialized();
+
+  const AndroidInitializationSettings initializationSettingsAndroid = 
+    AndroidInitializationSettings('@mipmap/ic_launcher');
+  const  DarwinInitializationSettings initializationSettingsDarwin = 
+    DarwinInitializationSettings();
+  const  LinuxInitializationSettings initializationSettingsLinux = 
+    LinuxInitializationSettings(
+      defaultActionName: 'Open notification'
+    );
+  const InitializationSettings initializationSettings = 
+    InitializationSettings(
+      android: initializationSettingsAndroid,
+      iOS: initializationSettingsDarwin,
+      macOS: initializationSettingsDarwin,
+      linux: initializationSettingsLinux
+    );
+  await flutterLocalNotificationsPlugin.initialize(
+    initializationSettings
+  );
   runApp(const MyApp());
 }
 
@@ -29,7 +54,7 @@ class MyAppState extends State<MyApp> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      title: 'Flutter Demo',
+      title: 'LChatClient',
       theme: ThemeData(
         primarySwatch: Colors.blue,
       ),
@@ -49,7 +74,7 @@ class SplashPage extends StatelessWidget {
     return BlocProvider<InitializationCubit>(
       create: (context) {
         return InitializationCubit(
-          serverAddress: '127.0.0.1', 
+          serverAddress: 'chat.linloir.cn', 
           serverPort: 20706
         );
       },
@@ -65,13 +90,15 @@ class SplashPage extends StatelessWidget {
                 Navigator.of(context).pushReplacement(HomePage.route(
                   userID: userID,
                   localServiceRepository: state.localServiceRepository!,
-                  tcpRepository: state.tcpRepository!
+                  tcpRepository: state.tcpRepository!,
+                  localNotificationsPlugin: flutterLocalNotificationsPlugin
                 ));
               }
               else {
                 Navigator.of(context).pushReplacement(LoginPage.route(
                   localServiceRepository: state.localServiceRepository!,
-                  tcpRepository: state.tcpRepository!
+                  tcpRepository: state.tcpRepository!,
+                  localNotificationsPlugin: flutterLocalNotificationsPlugin
                 ));
               }
             });

lib/register/register_page.dart

@@ -1,7 +1,7 @@
 /*
  * @Author       : Linloir
  * @Date         : 2022-10-12 17:36:38
- * @LastEditTime : 2022-10-23 10:15:31
+ * @LastEditTime : 2022-10-23 22:12:12
  * @Description  : 
  */
 /*
@@ -13,6 +13,7 @@
 
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:formz/formz.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:tcp_client/home/home_page.dart';
@@ -26,19 +27,24 @@ class RegisterPage extends StatelessWidget {
   const RegisterPage({
     required this.localServiceRepository,
     required this.tcpRepository,
+    required this.localNotificationsPlugin,
     super.key
   });
 
   static Route<void> route({
     required LocalServiceRepository localServiceRepository,
-    required TCPRepository tcpRepository
+    required TCPRepository tcpRepository,
+    required FlutterLocalNotificationsPlugin localNotificationsPlugin,
   }) => MaterialPageRoute<void>(builder: (context) => RegisterPage(
     localServiceRepository: localServiceRepository,
-    tcpRepository: tcpRepository
+    tcpRepository: tcpRepository,
+    localNotificationsPlugin: localNotificationsPlugin,
+    
   ));
 
   final LocalServiceRepository localServiceRepository;
   final TCPRepository tcpRepository;
+  final FlutterLocalNotificationsPlugin localNotificationsPlugin;
 
   @override
   Widget build(BuildContext context) {
@@ -74,7 +80,8 @@ class RegisterPage extends StatelessWidget {
                 Navigator.of(context).pushAndRemoveUntil(HomePage.route(
                   userID: userID,
                   localServiceRepository: localServiceRepository,
-                  tcpRepository: tcpRepository
+                  tcpRepository: tcpRepository,
+                  localNotificationsPlugin: localNotificationsPlugin
                 ), (route) => false);
               });
             }

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,6 +5,7 @@
 import FlutterMacOS
 import Foundation
 
+import flutter_local_notifications
 import path_provider_macos
 import screen_retriever
 import shared_preferences_macos
@@ -12,6 +13,7 @@ import sqflite
 import window_manager
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  FlutterLocalNotificationsPlugin.register(with: registry.registrar(forPlugin: "FlutterLocalNotificationsPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
   ScreenRetrieverPlugin.register(with: registry.registrar(forPlugin: "ScreenRetrieverPlugin"))
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))

pubspec.lock

@@ -1,6 +1,13 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  args:
+    dependency: transitive
+    description:
+      name: args
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.3.1"
   async:
     dependency: "direct main"
     description:
@@ -71,6 +78,13 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.0.5"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.7.8"
   easy_debounce:
     dependency: "direct main"
     description:
@@ -132,6 +146,27 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.0.1"
+  flutter_local_notifications:
+    dependency: "direct main"
+    description:
+      name: flutter_local_notifications
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "12.0.2"
+  flutter_local_notifications_linux:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_linux
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.0"
+  flutter_local_notifications_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_platform_interface
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "6.0.0"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -284,6 +319,13 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.3"
+  petitparser:
+    dependency: transitive
+    description:
+      name: petitparser
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "5.0.0"
   photo_view:
     dependency: "direct main"
     description:
@@ -485,6 +527,13 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.4.12"
+  timezone:
+    dependency: transitive
+    description:
+      name: timezone
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.9.0"
   typed_data:
     dependency: transitive
     description:
@@ -520,6 +569,13 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.2.0+2"
+  xml:
+    dependency: transitive
+    description:
+      name: xml
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "6.1.0"
 sdks:
   dart: ">=2.18.2 <3.0.0"
   flutter: ">=3.3.0-0"

pubspec.yaml

@@ -17,7 +17,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 2.2.0
+version: 3.0.0
 
 environment:
   sdk: '>=2.18.2 <3.0.0'
@@ -60,6 +60,7 @@ dependencies:
   window_manager: ^0.2.7
   # easy_image_viewer: ^1.1.0
   photo_view: ^0.14.0
+  flutter_local_notifications: ^12.0.2
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.