import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:open_filex/open_filex.dart';

import 'android_download_helper.dart';

class EcardDownloadNotificationService {
  EcardDownloadNotificationService._();

  static final FlutterLocalNotificationsPlugin _plugin =
      FlutterLocalNotificationsPlugin();
  static bool _initialized = false;

  static Future<void> ensureInitialized() async {
    if (_initialized || kIsWeb) return;

    const androidSettings =
        AndroidInitializationSettings('@mipmap/ic_launcher');
    const iosSettings = DarwinInitializationSettings();
    const settings = InitializationSettings(
      android: androidSettings,
      iOS: iosSettings,
    );

    await _plugin.initialize(
      settings,
      onDidReceiveNotificationResponse: (NotificationResponse response) async {
        final filePath = response.payload;
        if (filePath == null || filePath.isEmpty) return;
        if (Platform.isAndroid) {
          await openAndroidDownloadedFile(filePath);
          return;
        }
        await OpenFilex.open(filePath);
      },
    );

    await _plugin
        .resolvePlatformSpecificImplementation<
            AndroidFlutterLocalNotificationsPlugin>()
        ?.requestNotificationsPermission();
    await _plugin
        .resolvePlatformSpecificImplementation<
            IOSFlutterLocalNotificationsPlugin>()
        ?.requestPermissions(alert: true, badge: true, sound: true);

    _initialized = true;
  }

  static Future<void> showDownloadCompleted({
    required String filePath,
    required String fileName,
  }) async {
    if (kIsWeb) return;
    await ensureInitialized();

    const androidDetails = AndroidNotificationDetails(
      'ecard_downloads_channel',
      'E-Card Downloads',
      channelDescription: 'Notifications for completed eCard downloads',
      importance: Importance.max,
      priority: Priority.high,
      styleInformation: DefaultStyleInformation(true, true),
    );
    const iosDetails = DarwinNotificationDetails();

    await _plugin.show(
      DateTime.now().millisecondsSinceEpoch ~/ 1000,
      'eCard downloaded',
      'Tap to open $fileName',
      const NotificationDetails(
        android: androidDetails,
        iOS: iosDetails,
      ),
      payload: filePath,
    );
  }
}