import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:hive/hive.dart';
import 'package:timezone/timezone.dart' as tz;

import '../models/task.dart';
import 'common.dart';

// 初始化通知
Future<void> initNotify() async {
  final notify = FlutterLocalNotificationsPlugin();
  await notify.initialize(
    const InitializationSettings(
      windows: WindowsInitializationSettings(
        appName: 'TaskHub',
        appUserModelId: 'com.cxx.task',
        guid: 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
        iconPath: 'assets/icons/app_icon.ico',
      ),
    ),
  );
}

Future<void> showNotify(String title, String body) async {
  final notify = FlutterLocalNotificationsPlugin();
  final id = DateTime.now().millisecondsSinceEpoch.remainder(10000);

  await notify.show(
    id,
    title,
    body,
    const NotificationDetails(windows: WindowsNotificationDetails()),
  );
}

// 发送通知
Future<void> scheduleNotification(
  int id,
  String title,
  String body,
  DateTime scheduleTime,
) async {
  final notify = FlutterLocalNotificationsPlugin();

  final local = tz.getLocation('Asia/Shanghai');
  final tzTime = tz.TZDateTime.from(scheduleTime, local);

  await notify.zonedSchedule(
    id,
    title,
    body,
    tzTime,
    const NotificationDetails(windows: WindowsNotificationDetails()),
    androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
  );
}

// 取消通知
Future<void> cancelAllSchedule() async {
  final notify = FlutterLocalNotificationsPlugin();

  await notify.cancelAll();
}

void checkScheduleTime() {
  final taskBox = Hive.box<Task>('taskBox');
  final now = DateTime.now();

  cancelAllSchedule();
  for (var task in taskBox.values) {
    if (task.scheduleTime != null &&
        !task.isCompleted &&
        isSameDate(task.scheduleTime!, DateTime.now()) &&
        task.scheduleTime!.isAfter(now)) {
      scheduleNotification(
        task.id,
        task.title,
        task.desc ?? '',
        task.scheduleTime!,
      );
    }
  }
}