integrate api for the push notification in the rejected applications

android/app/build.gradle

@@ -1,5 +1,8 @@
 plugins {
     id "com.android.application"
+    // START: FlutterFire Configuration
+    id 'com.google.gms.google-services'
+    // END: FlutterFire Configuration
     id "kotlin-android"
     // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
     id "dev.flutter.flutter-gradle-plugin"

android/app/src/main/AndroidManifest.xml

@@ -29,7 +29,17 @@
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
+            <intent-filter>
+                <action android:name="FLUTTER_NOTIFICATION_CLICK" />
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
         </activity>
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_channel_id"
+            android:value="high_importance_channel" />
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@mipmap/ic_launcher"/>
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
         <meta-data

android/settings.gradle

@@ -19,6 +19,9 @@ pluginManagement {
 plugins {
     id "dev.flutter.flutter-plugin-loader" version "1.0.0"
     id "com.android.application" version "7.3.0" apply false
+    // START: FlutterFire Configuration
+    id "com.google.gms.google-services" version "4.3.15" apply false
+    // END: FlutterFire Configuration
     id "org.jetbrains.kotlin.android" version "1.9.10" apply false
 }
 

lib/main.dart

@@ -1,26 +1,97 @@
-import 'package:cheminova/provider/collect_kyc_provider.dart';
+import 'dart:developer';
+import 'dart:io';
 import 'package:cheminova/provider/home_provider.dart';
-import 'package:cheminova/screens/Attendance_success.dart';
-import 'package:cheminova/screens/forgot_password_screen.dart';
-import 'package:cheminova/screens/login_screen.dart';
-import 'package:cheminova/screens/mark_attendence_screen.dart';
-import 'package:cheminova/screens/on_leave_screen.dart';
 import 'package:cheminova/screens/splash_screen.dart';
-import 'package:cheminova/services/snackbar_service.dart';
+import 'package:firebase_core/firebase_core.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
 import 'package:provider/provider.dart';
+import 'firebase_options.dart';
 
-void main() {
-  runApp(MultiProvider(
-      providers: [
-        ChangeNotifierProvider(create: (context) => HomeProvider()),
-      ],
-      child: const MyApp()));
+@pragma('vm:entry-point')
+Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
+  await Firebase.initializeApp();
+  log("Handling a background message: ${message.data["data"]}");
 }
 
-class MyApp extends StatelessWidget {
+AndroidNotificationChannel channel = const AndroidNotificationChannel(
+    'High Importance Channel', 'High Importance Notifications',
+    importance: Importance.high);
+
+late FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
+
+Future<void> main() async {
+  WidgetsFlutterBinding.ensureInitialized();
+
+  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
+
+  if (!kIsWeb) {
+    flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
+
+    FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);
+
+    await FirebaseMessaging.instance.getInitialMessage().then((message) {});
+
+    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
+      RemoteNotification? notification = message.notification;
+      AndroidNotification? android = message.notification?.android;
+      if (notification != null && android != null) {
+        flutterLocalNotificationsPlugin.show(
+            notification.hashCode,
+            notification.title,
+            notification.body,
+            NotificationDetails(
+                android: AndroidNotificationDetails(channel.id, channel.name,
+                    icon: '@mipmap/ic_launcher', importance: Importance.max),
+                iOS: const DarwinNotificationDetails()));
+        const AndroidInitializationSettings initializationSettingsAndroid =
+            AndroidInitializationSettings('@mipmap/ic_launcher');
+        const DarwinInitializationSettings darwinInitializationSettings =
+            DarwinInitializationSettings();
+        var initSettings = const InitializationSettings(
+            android: initializationSettingsAndroid,
+            iOS: darwinInitializationSettings);
+        flutterLocalNotificationsPlugin.initialize(initSettings);
+      }
+    });
+
+    if (Platform.isAndroid) {
+      await flutterLocalNotificationsPlugin
+          .resolvePlatformSpecificImplementation<
+              AndroidFlutterLocalNotificationsPlugin>()
+          ?.requestNotificationsPermission();
+      await flutterLocalNotificationsPlugin
+          .resolvePlatformSpecificImplementation<
+              AndroidFlutterLocalNotificationsPlugin>()
+          ?.createNotificationChannel(channel);
+    }
+    if (Platform.isIOS) {
+      await flutterLocalNotificationsPlugin
+          .resolvePlatformSpecificImplementation<
+              IOSFlutterLocalNotificationsPlugin>()
+          ?.requestPermissions(alert: true, badge: true, sound: true);
+    }
+
+    await FirebaseMessaging.instance
+        .setForegroundNotificationPresentationOptions(
+            alert: true, badge: true, sound: true);
+  }
+
+  runApp(MultiProvider(providers: [
+    ChangeNotifierProvider(create: (context) => HomeProvider()),
+  ], child: const MyApp()));
+}
+
+class MyApp extends StatefulWidget {
   const MyApp({super.key});
 
+  @override
+  State<MyApp> createState() => _MyAppState();
+}
+
+class _MyAppState extends State<MyApp> {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(

lib/notification_services.dart

@@ -0,0 +1,165 @@
+import 'dart:io';
+
+import 'package:firebase_messaging/firebase_messaging.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+
+class NotificationServices {
+  //initialising firebase message plugin
+  FirebaseMessaging messaging = FirebaseMessaging.instance;
+
+  //initialising firebase message plugin
+  final FlutterLocalNotificationsPlugin _flutterLocalNotificationsPlugin =
+      FlutterLocalNotificationsPlugin();
+
+  //function to initialise flutter local notification plugin to show notifications for android when app is active
+  void initLocalNotifications(
+      BuildContext context, RemoteMessage message) async {
+    var androidInitializationSettings =
+        const AndroidInitializationSettings('@mipmap/ic_launcher');
+    var iosInitializationSettings = const DarwinInitializationSettings();
+
+    var initializationSetting = InitializationSettings(
+        android: androidInitializationSettings, iOS: iosInitializationSettings);
+
+    await _flutterLocalNotificationsPlugin.initialize(initializationSetting,
+        onDidReceiveNotificationResponse: (payload) {
+      // handle interaction when app is active for android
+      handleMessage(context, message);
+    });
+  }
+
+  void firebaseInit(BuildContext context) {
+    FirebaseMessaging.onMessage.listen((message) {
+      RemoteNotification? notification = message.notification;
+      AndroidNotification? android = message.notification!.android;
+
+      if (kDebugMode) {
+        print("notifications title:${notification!.title}");
+        print("notifications body:${notification.body}");
+        print('count:${android!.count}');
+        print('data:${message.data.toString()}');
+      }
+
+      if (Platform.isIOS) {
+        forgroundMessage();
+      }
+
+      if (Platform.isAndroid) {
+        initLocalNotifications(context, message);
+        showNotification(message);
+      }
+    });
+  }
+
+  void requestNotificationPermission() async {
+    NotificationSettings settings = await messaging.requestPermission(
+      alert: true,
+      announcement: true,
+      badge: true,
+      carPlay: true,
+      criticalAlert: true,
+      provisional: true,
+      sound: true,
+    );
+
+    if (settings.authorizationStatus == AuthorizationStatus.authorized) {
+      if (kDebugMode) {
+        print('user granted permission');
+      }
+    } else if (settings.authorizationStatus ==
+        AuthorizationStatus.provisional) {
+      if (kDebugMode) {
+        print('user granted provisional permission');
+      }
+    } else {
+      //appsetting.AppSettings.openNotificationSettings();
+      if (kDebugMode) {
+        print('user denied permission');
+      }
+    }
+  }
+
+  // function to show visible notification when app is active
+  Future<void> showNotification(RemoteMessage message) async {
+    AndroidNotificationChannel channel = AndroidNotificationChannel(
+        message.notification!.android!.channelId.toString(),
+        message.notification!.android!.channelId.toString(),
+        importance: Importance.max,
+        showBadge: true,
+        playSound: true,
+        sound: const RawResourceAndroidNotificationSound('jetsons_doorbell'));
+
+    AndroidNotificationDetails androidNotificationDetails =
+        AndroidNotificationDetails(
+            channel.id.toString(), channel.name.toString(),
+            channelDescription: 'your channel description',
+            importance: Importance.high,
+            priority: Priority.high,
+            playSound: true,
+            ticker: 'ticker',
+            sound: channel.sound
+            //     sound: RawResourceAndroidNotificationSound('jetsons_doorbell')
+            //  icon: largeIconPath
+            );
+
+    const DarwinNotificationDetails darwinNotificationDetails =
+        DarwinNotificationDetails(
+            presentAlert: true, presentBadge: true, presentSound: true);
+
+    NotificationDetails notificationDetails = NotificationDetails(
+        android: androidNotificationDetails, iOS: darwinNotificationDetails);
+
+    Future.delayed(Duration.zero, () {
+      _flutterLocalNotificationsPlugin.show(
+        0,
+        message.notification!.title.toString(),
+        message.notification!.body.toString(),
+        notificationDetails,
+      );
+    });
+  }
+
+  //function to get device token on which we will send the notifications
+  Future<String> getDeviceToken() async {
+    String? token = await messaging.getToken();
+    return token!;
+  }
+
+  void isTokenRefresh() async {
+    messaging.onTokenRefresh.listen((event) {
+      event.toString();
+      if (kDebugMode) {
+        print('refresh');
+      }
+    });
+  }
+
+  //handle tap on notification when app is in background or terminated
+  Future<void> setupInteractMessage(BuildContext context) async {
+    // when app is terminated
+    RemoteMessage? initialMessage =
+        await FirebaseMessaging.instance.getInitialMessage();
+
+    if (initialMessage != null) {
+      handleMessage(context, initialMessage);
+    }
+
+    //when app ins background
+    FirebaseMessaging.onMessageOpenedApp.listen((event) {
+      handleMessage(context, event);
+    });
+  }
+
+  void handleMessage(BuildContext context, RemoteMessage message) {}
+
+  Future forgroundMessage() async {
+    await FirebaseMessaging.instance
+        .setForegroundNotificationPresentationOptions(
+      alert: true,
+      badge: true,
+      sound: true,
+    );
+  }
+}

lib/screens/home_screen.dart

@@ -1,3 +1,4 @@
+import 'package:cheminova/notification_services.dart';
 import 'package:cheminova/provider/home_provider.dart';
 import 'package:cheminova/screens/rejected_application_screen.dart';
 import 'package:cheminova/screens/calendar_screen.dart';
@@ -13,6 +14,7 @@ import 'package:cheminova/screens/update_inventory_screen.dart';
 import 'package:cheminova/widgets/common_app_bar.dart';
 import 'package:cheminova/widgets/common_background.dart';
 import 'package:cheminova/widgets/common_drawer.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -24,10 +26,19 @@ class HomePage extends StatefulWidget {
 }
 
 class _HomePageState extends State<HomePage> {
+  NotificationServices notificationServices = NotificationServices();
+
   @override
   void initState() {
     Provider.of<HomeProvider>(context, listen: false).getProfile();
     super.initState();
+    notificationServices.requestNotificationPermission();
+
+    notificationServices. getDeviceToken().then((value) {
+      if (kDebugMode) {
+        print('Device Token: $value');
+      }
+    });
   }
 
   @override

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -6,12 +6,18 @@ import FlutterMacOS
 import Foundation
 
 import file_selector_macos
+import firebase_core
+import firebase_messaging
+import flutter_local_notifications
 import flutter_secure_storage_macos
 import geolocator_apple
 import path_provider_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
+  FLTFirebaseCorePlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseCorePlugin"))
+  FLTFirebaseMessagingPlugin.register(with: registry.registrar(forPlugin: "FLTFirebaseMessagingPlugin"))
+  FlutterLocalNotificationsPlugin.register(with: registry.registrar(forPlugin: "FlutterLocalNotificationsPlugin"))
   FlutterSecureStoragePlugin.register(with: registry.registrar(forPlugin: "FlutterSecureStoragePlugin"))
   GeolocatorPlugin.register(with: registry.registrar(forPlugin: "GeolocatorPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))

pubspec.lock

@@ -9,6 +9,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "67.0.0"
+  _flutterfire_internals:
+    dependency: transitive
+    description:
+      name: _flutterfire_internals
+      sha256: b1595874fbc8f7a50da90f5d8f327bb0bfd6a95dc906c390efe991540c3b54aa
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.40"
   analyzer:
     dependency: transitive
     description:
@@ -209,6 +217,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.2.0"
+  dbus:
+    dependency: transitive
+    description:
+      name: dbus
+      sha256: "365c771ac3b0e58845f39ec6deebc76e3276aa9922b0cc60840712094d9047ac"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.7.10"
   dio:
     dependency: "direct main"
     description:
@@ -281,6 +297,54 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.9.3+2"
+  firebase_core:
+    dependency: "direct main"
+    description:
+      name: firebase_core
+      sha256: "3187f4f8e49968573fd7403011dca67ba95aae419bc0d8131500fae160d94f92"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.3.0"
+  firebase_core_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_core_platform_interface
+      sha256: "3c3a1e92d6f4916c32deea79c4a7587aa0e9dbbe5889c7a16afcf005a485ee02"
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.2.0"
+  firebase_core_web:
+    dependency: transitive
+    description:
+      name: firebase_core_web
+      sha256: e8d1e22de72cb21cdcfc5eed7acddab3e99cd83f3b317f54f7a96c32f25fd11e
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.17.4"
+  firebase_messaging:
+    dependency: "direct main"
+    description:
+      name: firebase_messaging
+      sha256: "1b0a4f9ecbaf9007771bac152afad738ddfacc4b8431a7591c00829480d99553"
+      url: "https://pub.dev"
+    source: hosted
+    version: "15.0.4"
+  firebase_messaging_platform_interface:
+    dependency: transitive
+    description:
+      name: firebase_messaging_platform_interface
+      sha256: c5a6443e66ae064fe186901d740ee7ce648ca2a6fd0484b8c5e963849ac0fc28
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.5.42"
+  firebase_messaging_web:
+    dependency: transitive
+    description:
+      name: firebase_messaging_web
+      sha256: "232ef63b986467ae5b5577a09c2502b26e2e2aebab5b85e6c966a5ca9b038b89"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.8.12"
   fixnum:
     dependency: transitive
     description:
@@ -326,6 +390,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "3.0.2"
+  flutter_local_notifications:
+    dependency: "direct main"
+    description:
+      name: flutter_local_notifications
+      sha256: dd6676d8c2926537eccdf9f72128bbb2a9d0814689527b17f92c248ff192eaf3
+      url: "https://pub.dev"
+    source: hosted
+    version: "17.2.1+2"
+  flutter_local_notifications_linux:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_linux
+      sha256: c49bd06165cad9beeb79090b18cd1eb0296f4bf4b23b84426e37dd7c027fc3af
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.1"
+  flutter_local_notifications_platform_interface:
+    dependency: transitive
+    description:
+      name: flutter_local_notifications_platform_interface
+      sha256: "85f8d07fe708c1bdcf45037f2c0109753b26ae077e9d9e899d55971711a4ea66"
+      url: "https://pub.dev"
+    source: hosted
+    version: "7.2.0"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -1021,6 +1109,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.1.4"
+  timezone:
+    dependency: transitive
+    description:
+      name: timezone
+      sha256: "2236ec079a174ce07434e89fcd3fcda430025eb7692244139a9cf54fdcf1fc7d"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.9.4"
   timing:
     dependency: transitive
     description:

pubspec.yaml

@@ -45,6 +45,9 @@ dependencies:
   geocoding: ^3.0.0
   pretty_dio_logger: ^1.3.1
   csc_picker: ^0.2.7
+  firebase_core: ^3.3.0
+  firebase_messaging: ^15.0.4
+  flutter_local_notifications: ^17.2.1+2
 
 dev_dependencies:
   flutter_test:

windows/flutter/generated_plugin_registrant.cc

@@ -7,6 +7,7 @@
 #include "generated_plugin_registrant.h"
 
 #include <file_selector_windows/file_selector_windows.h>
+#include <firebase_core/firebase_core_plugin_c_api.h>
 #include <flutter_secure_storage_windows/flutter_secure_storage_windows_plugin.h>
 #include <geolocator_windows/geolocator_windows.h>
 #include <permission_handler_windows/permission_handler_windows_plugin.h>
@@ -14,6 +15,8 @@
 void RegisterPlugins(flutter::PluginRegistry* registry) {
   FileSelectorWindowsRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FileSelectorWindows"));
+  FirebaseCorePluginCApiRegisterWithRegistrar(
+      registry->GetRegistrarForPlugin("FirebaseCorePluginCApi"));
   FlutterSecureStorageWindowsPluginRegisterWithRegistrar(
       registry->GetRegistrarForPlugin("FlutterSecureStorageWindowsPlugin"));
   GeolocatorWindowsRegisterWithRegistrar(

windows/flutter/generated_plugins.cmake

@@ -4,6 +4,7 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   file_selector_windows
+  firebase_core
   flutter_secure_storage_windows
   geolocator_windows
   permission_handler_windows