import 'dart:async';
import 'dart:ui';

import 'package:call_log/call_log.dart';
import 'package:flustars/flustars.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_background_service/flutter_background_service.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:project_telephony/model/send_number_model.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:telephony/telephony.dart';

import '../../base/DBManager.dart';
import '../user/user_page.dart';

const nId = "my_foreground";
const notificationId = 888;

Future<void> initializeService() async {
  final service = FlutterBackgroundService();
  const AndroidNotificationChannel channel = AndroidNotificationChannel(
    nId, // id
    '我的前台服务', // title
    description: '此通道用于重要通知。', // description
    importance: Importance.low, // importance must be at low or higher level
  );
  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();
  await flutterLocalNotificationsPlugin
      .resolvePlatformSpecificImplementation<
          AndroidFlutterLocalNotificationsPlugin>()
      ?.createNotificationChannel(channel);
  await service.configure(
    iosConfiguration: IosConfiguration(
      // auto start service
      autoStart: true,
      // this will be executed when app is in foreground in separated isolate
      onForeground: onStart,
      // you have to enable background fetch capability on xcode project
      onBackground: onIosBackground,
    ),
    androidConfiguration: AndroidConfiguration(
      // this will be executed when app is in foreground or background in separated isolate
      onStart: onStart,

      // auto start service
      autoStart: true,
      isForegroundMode: true,

      notificationChannelId: nId,
      // this must match with notification channel you created above.
      initialNotificationTitle: 'AWESOME SERVICE',
      initialNotificationContent: 'Initializing',
      foregroundServiceNotificationId: notificationId,
    ),
  );
  // service.startService();
}

bool onIosBackground(ServiceInstance service) {
  WidgetsFlutterBinding.ensureInitialized();
  print('FLUTTER BACKGROUND FETCH');
  return true;
}

// @pragma('vm:entry-point')
void onStart(ServiceInstance service) async {
  DartPluginRegistrant.ensureInitialized();
  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();
  service.on("stopService").listen((event) {
    service.stopSelf();
  });
  //定义
  int flag = 0;
  String? phoneNum = "";
  String callState;
  bool fff=false;

  Timer.periodic(const Duration(seconds: 1), (timer) async {
    //数据储存读取
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    //获取来电状态
    CallState state = await Telephony.instance.callState;
    callState = state.name;
    List<String> noNumberList = prefs.getStringList("specified") ?? [];
    flutterLocalNotificationsPlugin.show(
      notificationId,
      '短信帮手',
      '欢迎使用短信帮手(请勿关闭)',
      // '$callState ${DateTime.now().second}',
      const NotificationDetails(
        android: AndroidNotificationDetails(
          nId,
          '我的前台服务',
          icon: 'ic_bg_service_small',
          ongoing: true,
        ),
      ),
    );

    //发送内容信息
    String content = prefs.getString("refSms") ?? "现在有事,等会回电";
    //发送信息的状态
    int? numberSet = prefs.getInt("numIndex") ?? 1;
    int? dayTimes =prefs.getInt("dayTimes")??0;
    print("号码设置$numberSet 发送内容$content 指定不发送$noNumberList");
    // print(flag);
    if (callState == "IDLE") {
      if (flag != 0) {
        print(dayTimes);
        final Iterable<CallLogEntry> entry = await CallLog.query();
        phoneNum = entry.first.number;
        var phone = SendNumber(
          sendNumber: phoneNum,
          createdAt: DateUtil.formatDate(DateTime.now()),
        );
        var s = await DBManager().find(phoneNum!);
        if (s!.isEmpty) {
          await DBManager().saveData(phone);
          fff=true;
        }else if(DateTime.parse(s.first.createdAt!)
            .add(Duration(days: dayTimes))
            .isBefore(DateTime.now())) {
          await DBManager().update(phone);
          fff=true;
        }
        if(fff){
          switch (numberSet) {
            case 0:
              if (!noNumberList.contains(phoneNum)) {
                print("所有都发+号码设置$numberSet+发送内容$content");
                Telephony.backgroundInstance
                    .sendSms(to: phoneNum!, message: content);
                flag = 0;
              } else {
                print("指定不发送");
                flag = 0;
              }
              break;
            case 1:
              if (flag > 0) {
                // print("来电拒接/未接");
                // print("${phoneNum!}:${ref!}");
                if (!noNumberList.contains(phoneNum)) {
                  print("来电拒接+号码设置$numberSet+发送内容$content");
                  Telephony.backgroundInstance
                      .sendSms(to: phoneNum!, message: content);
                  flag = 0;
                } else {
                  print("指定不发送");
                  flag = 0;
                }
                // print("发送成功");
              } else if (flag == -1) {
                // print("来电接听");
                // print("${phoneNum!}:$content");
                if (!noNumberList.contains(phoneNum)) {
                  print("来电接听+号码设置$numberSet+发送内容$content");
                  Telephony.backgroundInstance
                      .sendSms(to: phoneNum!, message: content);
                  flag = 0;
                } else {
                  print("指定不发送");
                  flag = 0;
                }
              }
              break;
            case 2:
              if (flag == -2) {
                if (entry.first.duration! > 0) {
                  // print("${phoneNum!}:$content");
                  if (!noNumberList.contains(phoneNum)) {
                    print("去电接听+号码设置$numberSet+发送内容$content");
                    Telephony.backgroundInstance
                        .sendSms(to: phoneNum!, message: content);
                  }
                } else {
                  // print("${phoneNum!}:$content");
                  if (!noNumberList.contains(phoneNum)) {
                    print("去电挂断+号码设置$numberSet+发送内容$content");
                    Telephony.backgroundInstance
                        .sendSms(to: phoneNum!, message: content);
                  } else {
                    print("指定不发送");
                    flag = 0;
                  }
                }
              }
              flag = 0;
              break;
          }
          fff=false;
        }
      }
    } else if (callState == "RINGING") {
      flag = 1;
      print("打印");
    } else if (callState == "OFFHOOK") {
      if (flag > 0) flag *= -1;
      if (flag == 0) flag = -2;
      print("打印");
    }
  });
}