didvan-app/lib/services/notification/awsome/awsome_notification_handler.dart

import 'package:awesome_notifications/awesome_notifications.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/material.dart';

import '../../../models/notification_message.dart';
import 'awsome_notification_controller.dart';

class AwsomeNotificationHandler {
  main() async {
    late ReceivedAction? initialAction;

    AwesomeNotifications().initialize(
        // set the icon to null if you want to use the default app icon
        null,
        [
          NotificationChannel(
              channelKey: 'alerts',
              channelName: 'Alerts',
              channelDescription: 'Notification tests as alerts',
              playSound: true,
              onlyAlertOnce: true,
              groupAlertBehavior: GroupAlertBehavior.Children,
              importance: NotificationImportance.High,
              defaultPrivacy: NotificationPrivacy.Public,
              defaultColor: const Color(0xFF007EA7),
              criticalAlerts: true,
              ledColor: Colors.white)
        ],

        // Channel groups are only visual and are not required
        // channelGroups: [
        //   NotificationChannelGroup(
        //       channelGroupKey: 'basic_channel_group',
        //       channelGroupName: 'Basic group')
        // ],
        debug: true);

    initialAction = await AwesomeNotifications()
        .getInitialNotificationAction(removeFromActionEvents: false);

    AwesomeNotifications().setListeners(
        onActionReceivedMethod: NotificationController.onActionReceivedMethod,
        onNotificationCreatedMethod:
            NotificationController.onNotificationCreatedMethod,
        onNotificationDisplayedMethod:
            NotificationController.onNotificationDisplayedMethod,
        onDismissActionReceivedMethod:
            NotificationController.onDismissActionReceivedMethod);

    AwesomeNotifications().isNotificationAllowed().then((isAllowed) {
      //It would be more appropriate if you can show your own dialog
      //to the user before requesting the notifications permissons.
      if (!isAllowed) {
        AwesomeNotifications().requestPermissionToSendNotifications(
          permissions: [
            NotificationPermission.Alert,
            NotificationPermission.Sound,
            NotificationPermission.Badge,
            NotificationPermission.Vibration,
            NotificationPermission.Light,
            NotificationPermission.FullScreenIntent,
          ],
        );
      }
    });
  }

  show(RemoteMessage message) async {
    NotificationMessage notificationMessage =
        NotificationMessage.fromJson(message.data);

    switch (notificationMessage.type) {
      case "1":
        await showNotificationTypeNews(notificationMessage);
        break;

      case "2":
        await showNotificationTypeMessage(notificationMessage);

        break;

      case "3":
        await showNotificationTypeEmoji(notificationMessage);

        break;
    }
  }

  showNotificationTypeNews(NotificationMessage message) async {
    AwesomeNotifications().createNotification(
      content: NotificationContent(
          id: DateTime.now().millisecondsSinceEpoch ~/ 1000,
          channelKey: 'alerts',
          actionType: ActionType.Default,
          title: "\u200f ${message.title} \u200f",
          body: message.body.toString(),
          notificationLayout: NotificationLayout.BigText,
          largeIcon: message.image.toString(),
          color: const Color(0xFF007EA7)),
    );
  }

  showNotificationTypeMessage(NotificationMessage message) async {
    AwesomeNotifications().createNotification(
        content: NotificationContent(
            id: DateTime.now().millisecondsSinceEpoch ~/ 1000,
            channelKey: 'alerts',
            actionType: ActionType.Default,
            title: message.title.toString(),
            body: message.body.toString(),
            largeIcon: message.image.toString(),
            roundedLargeIcon: true,
            notificationLayout: NotificationLayout.Inbox,
            color: const Color(0xFF007EA7)),
        actionButtons: [
          NotificationActionButton(
              key: 'REPLY',
              label: 'جواب دادن',
              requireInputText: true,
              actionType: ActionType.SilentAction),
          NotificationActionButton(
              key: 'DISMISS',
              label: 'خوانده شده',
              actionType: ActionType.DismissAction,
              isDangerousOption: true)
        ]);
  }

  showNotificationTypeEmoji(NotificationMessage message) async {
    AwesomeNotifications().createNotification(
        content: NotificationContent(
            id: DateTime.now().millisecondsSinceEpoch ~/ 1000,
            channelKey: 'alerts',
            title: 'Emojis are awes'
                'ome too! ${Emojis.animals_lady_beetle}${Emojis.activites_balloon}${Emojis.emotion_red_heart}',
            body:
                'Simple body with a bunch of Emojis! ${Emojis.transport_police_car} ${Emojis.animals_dog} ${Emojis.flag_UnitedStates} ${Emojis.person_baby}',
            largeIcon:
                'https://cdn.britannica.com/72/232772-050-4E3D86CC/mind-blown-emoji-head-exploding-emoticon.jpg',
            notificationLayout: NotificationLayout.BigPicture,
            payload: {
          'title': 'Notification Title',
          'body': 'Notification Body',
          'image': 'path/to/smallImage.png', // Path to small image
          'largeImage': 'path/to/largeImage.png', // Path to large image
        }));
  }
}