import 'dart:developer';

import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:hub/app_state.dart';
import 'package:hub/backend/api_requests/api_calls.dart';
import 'package:hub/shared/utils/log_util.dart';

import 'notification_service.dart';

Future<void> handleMessage(RemoteMessage message) async {
  NotificationService.show(
      title: message.notification!.title!,
      body: message.notification!.body!,
      payload: Map<String, String>.from(message.data));
}

class FirebaseMessagingService {
  // Singleton instance
  static final FirebaseMessagingService _instance =
      FirebaseMessagingService._internal();

  // Factory constructor
  factory FirebaseMessagingService() => _instance;

  // Private constructor
  FirebaseMessagingService._internal();

  final _firebaseMessaging = FirebaseMessaging.instance;

  Future<void> initNotifications() async {
    await _firebaseMessaging.requestPermission();

    _refreshToken();

    _firebaseMessaging.setAutoInitEnabled(false);
    _firebaseMessaging.pluginConstants;

    FirebaseMessaging.onBackgroundMessage(handleMessage);

    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
      handleMessage(message);
    });

    FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
      log('A Message was opened: $message');
    });

    FirebaseMessaging.instance
        .getInitialMessage()
        .then((RemoteMessage? message) {
      if (message != null) {
        log('A Message was opened: $message');
      }
    });
  }

  Future<void> updateDeviceToken() async {
    try {
      final String? deviceToken = await _firebaseMessaging.getToken();

      if (deviceToken != null) {
        AppState().token = deviceToken;

        final ApiCallResponse? response = await PhpGroup.updToken.call(
            token: AppState().token,
            devid: AppState().devUUID,
            useruuid: AppState().userUUID);

        if (PhpGroup.updToken.error((response?.jsonBody ?? '')) == false) {
          log('Token Atualizado com Sucesso!');
        } else {
          log('Falha ao Atualizar Token: ${response?.jsonBody}');
        }
      } else {
        log('Falha ao Pegar Token do Firebase');
      }
    } catch (e, s) {
      LogUtil.requestAPIFailed("updToken.php", "", "Atualizar Token", e, s);
    }
  }

  void _refreshToken() {
    _firebaseMessaging.onTokenRefresh.listen((token) => updateDeviceToken);
  }
}