import 'dart:async';
import 'dart:developer';
import 'dart:io';
import 'package:eatvio_app/core/app_config.dart';
import 'package:eatvio_app/core/app_initializer.dart';
import 'package:eatvio_app/core/utils/toasts.dart';
import 'package:flutter/services.dart';
import 'package:device_info_plus/device_info_plus.dart';
import 'package:dio/dio.dart';
import 'package:eatvio_app/core/locator_service.dart';
import 'package:eatvio_app/core/token_storage.dart';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter/services.dart' show MethodChannel, PlatformException;
import 'package:eatvio_app/core/error_reporting/error_reporter.dart';
import 'package:flutter_callkit_incoming/flutter_callkit_incoming.dart';

class FirebaseApi {
  final ErrorReporter _errorReporter;
  final _firebaseMessaging = FirebaseMessaging.instance;

  FirebaseApi({required ErrorReporter errorReporter}) : _errorReporter = errorReporter;

  Future<String?> getToken() async {
    String? token;

    if (await _isHuaweiDevice()) {
      token = await _getHuaweiPushTokenNative().timeout(
        const Duration(seconds: 5),
        onTimeout: () => null,
      );
    } else {
      if ((sl<AppConfig>().buildType == AppBuildType.prod)) {
        try {
          await _firebaseMessaging.requestPermission().timeout(
            const Duration(seconds: 5),
          );
        } catch (e) {
          // Разрешение не критично, продолжаем
          log('Failed to request Firebase messaging permission: $e');
        }
      }
      token = await _firebaseMessaging.getToken().timeout(
        const Duration(seconds: 5),
        onTimeout: () => null,
      );
    }
    return token;
  }

  Future<void> registerAnonymousPushToken() async {
    try {
      final deviceInfo = DeviceInfoPlugin();
      await sl<Dio>().post(
        '/api/anonymous_token',
        data: {
          'platform': Platform.isIOS ? 'ios' : (await _isHuaweiDevice()) ? 'huawei' : 'android',
          'hw_id': Platform.isIOS ? (await deviceInfo.iosInfo).identifierForVendor : (await deviceInfo.androidInfo).id,
          'token': await getToken(),
        },
      ).timeout(
        const Duration(seconds: 10),
        onTimeout: () {
          throw TimeoutException('registerAnonymousPushToken timeout');
        },
      );
    } catch (e, st) {
      log(e.toString(), stackTrace: st);
      await _errorReporter.report(e, st, origin: 'FirebaseApi');
      // Не пробрасываем ошибку дальше, так как это не критичная операция
    }
  }

  Future<void> registerPushToken() async {
    if (await TokenStorage.haveTokenInStorage()) {
      try {
        final deviceInfo = DeviceInfoPlugin();
        final isHuawei = Platform.isAndroid ? await _isHuaweiDevice() : false;
        await sl<Dio>().post(
          '/api/profile/notification/token/register',
          data: {
            'platform': Platform.isIOS ? 'ios' : (isHuawei ? 'huawei' : 'android'),
            'hw_id': Platform.isIOS ? (await deviceInfo.iosInfo).identifierForVendor : (await deviceInfo.androidInfo).id,
            'token': await getToken(),
          },
        ).timeout(
          const Duration(seconds: 10),
          onTimeout: () {
            throw TimeoutException('registerPushToken timeout');
          },
        );
        if (Platform.isIOS) {
          await _registerIosVoipPushToken();
        }
      } catch (e, st) {
        log(e.toString(), stackTrace: st);
        await _errorReporter.report(e, st, origin: 'FirebaseApi');
        // Не пробрасываем ошибку дальше, так как это не критичная операция
      }
    }
  }


  Future<void> unregisterPushTokens() async {
    if (!await TokenStorage.haveTokenInStorage()) return;
    try {
      await unregisterPushToken();
    } catch (_) {}
    if (Platform.isIOS) {
      try {
        await _unregisterIosVoipPushToken();
      } catch (_) {}
    }
  }

  Future<void> unregisterPushToken() async {
    if (!await TokenStorage.haveTokenInStorage()) return;
    try {
      final isHuawei = Platform.isAndroid ? await _isHuaweiDevice() : false;
      final platform = Platform.isIOS ? 'ios' : (isHuawei ? 'huawei' : 'android');
      final token = (await getToken()) ?? '';
      await sl<Dio>().post(
        '/api/profile/notification/token/unregister',
        data: {
          'platform': platform,
          'token': token,
        },
      ).timeout(
        const Duration(seconds: 10),
        onTimeout: () {
          throw TimeoutException('unregisterPushToken timeout');
        },
      );
    } catch (e, st) {
      log(e.toString(), stackTrace: st);
      await _errorReporter.report(e, st, origin: 'FirebaseApi');
    }
  }

  Future<void> _registerIosVoipPushToken() async {
    try {
      final token = (await FlutterCallkitIncoming.getDevicePushTokenVoIP())?.trim();
      if (token == null || token.isEmpty) return;

      final deviceInfo = DeviceInfoPlugin();
      await sl<Dio>().post(
        '/api/profile/notification/token/voip/register',
        data: {
          'platform': 'ios',
          'hw_id': (await deviceInfo.iosInfo).identifierForVendor,
          'token': token,
        },
      ).timeout(
        const Duration(seconds: 10),
        onTimeout: () {
          throw TimeoutException('registerPushToken voip timeout');
        },
      );
    } catch (e, st) {
      log(e.toString(), stackTrace: st);
      await _errorReporter.report(e, st, origin: 'FirebaseApi');
    }
  }

  Future<void> _unregisterIosVoipPushToken() async {
    try {
      final token = (await FlutterCallkitIncoming.getDevicePushTokenVoIP())?.trim() ?? '';
      await sl<Dio>().post(
        '/api/profile/notification/token/voip/unregister',
        data: {
          'token': token,
        },
      ).timeout(
        const Duration(seconds: 10),
        onTimeout: () {
          throw TimeoutException('unregisterPushToken voip timeout');
        },
      );
    } catch (e, st) {
      log(e.toString(), stackTrace: st);
      await _errorReporter.report(e, st, origin: 'FirebaseApi');
    }
  }

  Future<bool> _isHuaweiDevice() async {
    if (!Platform.isAndroid) return false;
    try {
      final info = await DeviceInfoPlugin().androidInfo;
      final brand = info.brand.toLowerCase();
      final manufacturer = info.manufacturer.toLowerCase();
      return brand.contains('huawei') || brand.contains('honor') || manufacturer.contains('huawei') || manufacturer.contains('honor');
    } catch (_) {
      return false;
    }
  }

  Future<String?> _getHuaweiPushTokenNative() async {
    try {
      const channel = MethodChannel('com.eatvioapp/hms_push');
      final String? token = await channel.invokeMethod<String>('getHuaweiToken');
      return token;
    } on PlatformException catch (e, st) {
      showErrorToast('$e $st');
      log(e.toString(), stackTrace: st);
      await _errorReporter.report(e, st, origin: 'FirebaseApi');
      return null;
    } catch (e, st) {
      showErrorToast('$e $st');
      log(e.toString(), stackTrace: st);
      await _errorReporter.report(e, st, origin: 'FirebaseApi');
      return null;
    }
  }
}