Flutter Push Notification Setup

dependencies:
  flutter:
    sdk: flutter
  
  # social.plus SDK
  amity_sdk: ^6.x.x
  
  # Firebase dependencies
  firebase_core: ^2.24.2
  firebase_messaging: ^14.7.10
  
  # Optional: For local notifications
  flutter_local_notifications: ^16.3.2
  
  # Optional: For permission handling
  permission_handler: ^11.1.0

import 'package:flutter/material.dart';
import 'package:firebase_core/firebase_core.dart';
import 'firebase_options.dart'; // Generated by FlutterFire CLI

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  
  // Initialize Firebase
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  
  runApp(MyApp());
}

// android/build.gradle
buildscript {
  dependencies {
    classpath 'com.google.gms:google-services:4.3.15'
  }
}

// android/app/build.gradle
apply plugin: 'com.google.gms.google-services'

android {
  compileSdkVersion 34
  
  defaultConfig {
    minSdkVersion 21
    targetSdkVersion 34
  }
}

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    
    <!-- Push notification permissions -->
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
    
    <application
        android:label="Your App"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher">
        
        <!-- Your activities -->
        
    </application>
</manifest>

<!-- ios/Runner/Info.plist -->
<dict>
    <!-- Existing keys -->
    
    <key>UIBackgroundModes</key>
    <array>
        <string>background-fetch</string>
        <string>remote-notification</string>
    </array>
    
    <key>FirebaseAppDelegateProxyEnabled</key>
    <false/>
</dict>

// ios/Runner/AppDelegate.swift
import UIKit
import Flutter
import Firebase
import UserNotifications

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    FirebaseApp.configure()
    
    if #available(iOS 10.0, *) {
      UNUserNotificationCenter.current().delegate = self as UNUserNotificationCenterDelegate
    }
    
    GeneratedPluginRegistrant.register(with: self)
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
  
  override func userNotificationCenter(_ center: UNUserNotificationCenter,
                                       willPresent notification: UNNotification,
                                       withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
    let userInfo = notification.request.content.userInfo
    let title = notification.request.content.title
    let body = notification.request.content.body
    
    completionHandler([.banner, .badge, .sound])
  }
  
  // Handle notification tap when app is in background or terminated
  override func userNotificationCenter(_ center: UNUserNotificationCenter,
                                       didReceive response: UNNotificationResponse,
                                       withCompletionHandler completionHandler: @escaping () -> Void) {
    let userInfo = response.notification.request.content.userInfo
    let title = response.notification.request.content.title
    let body = response.notification.request.content.body
    
    completionHandler()
  }
}

import 'dart:io';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:amity_sdk/amity_sdk.dart';

Future<void> registerPushNotification({
  String? fcmToken,
  Function(bool success, String? error)? callback,
}) async {
  try {
    final messaging = FirebaseMessaging.instance;
    
    // Request notification permissions (iOS)
    if (Platform.isIOS) {
      NotificationSettings settings = await messaging.requestPermission(
        alert: true,
        badge: true,
        sound: true,
      );
      
      if (settings.authorizationStatus != AuthorizationStatus.authorized) {
        if (callback != null) {
          callback(false, "Notification permission denied");
        }
        return;
      }
    }

    // Get device token
    String? token;
    if (Platform.isIOS) {
      // For iOS, try to get APNs token first
      token = await messaging.getAPNSToken();
      // Fall back to FCM token if APNs token is not available
      if (token == null) {
        token = await messaging.getToken();
      }
    } else {
      // For Android, get FCM token
      token = await messaging.getToken();
    }

    // Use provided FCM token or fallback to retrieved token
    final deviceToken = fcmToken ?? token;

    if (deviceToken == null) {
      if (callback != null) {
        callback(
          false,
          "Failed to get device token. Please ensure push notifications are enabled in device settings and APNs is configured in Firebase Console.",
        );
      }
      return;
    }

    // Register device token with Amity SDK
    await AmityCoreClient.registerDeviceNotification(deviceToken)
        .then((value) {
      if (callback != null) {
        callback(true, null);
      }
    }).onError((error, stackTrace) {
      if (callback != null) {
        callback(false, "Failed to register push notification: $error");
      }
    });
  } catch (e) {
    if (callback != null) {
      callback(false, e.toString());
    }
  }
}

// After user login to Amity
await AmityCoreClient.login(userId: 'user123')
    .then((value) async {
  print('✅ Logged in successfully');
  
  // Register for push notifications after successful login
  await registerPushNotification(
    callback: (success, error) {
      if (success) {
        print('✅ Push notifications registered successfully');
      } else {
        print('❌ Failed to register push notifications: $error');
      }
    },
  );
}).onError((error, stackTrace) {
  print('❌ Login failed: $error');
});