// * Service for managing local notifications in the app
// * Handles notification permissions, creation, and management

import 'package:flutter_local_notifications/flutter_local_notifications.dart';

// * Notification service class that handles all notification functionality
class NotificationService {
  // Plugin instance for local notifications
  final notifiactionPlugin = FlutterLocalNotificationsPlugin();

  // Initialization status flag
  bool _isInitialized = false;

  // Getter for initialization status
  bool get isInitialized => _isInitialized;

  // * Initialize the notification service
  // * - Requests notification permissions
  // * - Configures Android-specific settings
  // * - Initializes the notification plugin
  Future<void> initNotification() async {
    // Prevent multiple initializations
    if (_isInitialized) return;

    // Request permissions for Android notifications
    await notifiactionPlugin.resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>()!.requestNotificationsPermission();

    // Android-specific initialization settings
    const initSettingsAndroid = AndroidInitializationSettings(
      '@mipmap/ic_launcher',  // App icon for notifications
    );

    // Overall initialization settings
    const initSettings = InitializationSettings(android: initSettingsAndroid);

    // Initialize plugin
    await notifiactionPlugin.initialize(initSettings);
    _isInitialized = true;
  }

  // * Create default notification settings
  // * Configures a notification with:
  // * - Low importance and priority
  // * - Ongoing status
  // * - Specific channel for tracking
  NotificationDetails notificationDetails() {
    return const NotificationDetails(
      android: AndroidNotificationDetails(
        "tracking0",           // Channel ID
        "tracking ongoing",    // Channel name
        importance: Importance.low,
        priority: Priority.low,
        ongoing: true,         // Notification persists
      ),
    );
  }

  // * Show a new notification
  // * @param id The notification ID (default: 0)
  // * @param title The notification title
  Future<void> showNotification({int id = 0, String? title}) async {
    return notifiactionPlugin.show(id, title, "", notificationDetails());
  }

  // * Delete an existing notification
  // * @param id The ID of the notification to delete (default: 0)
  Future<void> deleteNotification({id = 0}) async {
    await notifiactionPlugin.cancel(id);
  }
}