import 'dart:async';
import 'package:get/get.dart';
import 'package:flutter/scheduler.dart';
import 'package:get/get.dart';
import 'package:star_lock/appRouters.dart';
import 'package:star_lock/main/lockDetail/lockDetail/lockDetail_logic.dart';
import 'package:star_lock/main/lockMian/entity/lockListInfo_entity.dart';
import 'package:star_lock/network/api_repository.dart';
import 'package:star_lock/tools/eventBusEventManage.dart';
import 'package:star_lock/tools/push/message_constant.dart';
import 'package:star_lock/tools/storage.dart';
import 'package:star_lock/tools/remote_unlock_overlay.dart';

class RemoteUnlockCoordinator {
  factory RemoteUnlockCoordinator() => _instance;
  RemoteUnlockCoordinator._();
  static final RemoteUnlockCoordinator _instance = RemoteUnlockCoordinator._();

  StreamSubscription? _sub;
  bool _inited = false;

  final List<RemoteUnlockRequestEvent> _pending = <RemoteUnlockRequestEvent>[];
  String? _previousRoute;
  dynamic _previousArgs;
  bool get hasPrevious => _previousRoute != null;

  static void init() {
    _instance._init();
  }

  void _init() {
    if (_inited) return;
    _inited = true;
    _sub = eventBus.on<PushExtraEvent>().listen((PushExtraEvent evt) async {
      final Map<String, dynamic> data = evt.data;
      final int eventNo = int.tryParse(data['eventNo']?.toString() ?? '') ?? -1;
      if (eventNo != MessageConstant.talkPushBigImage) {
        return;
      }
      final int lockId = int.tryParse(
        data['lockId']?.toString() ?? '',
      ) ?? -1;
      final int operateDate = int.tryParse(
        data['operateDate']?.toString() ?? '',
      ) ?? 0;
      final int currentDate = DateTime.now().millisecondsSinceEpoch;
      final int timeoutSeconds = (60 - (currentDate - operateDate) ~/ 1000) < 0
          ? 0
          : (60 - (currentDate - operateDate) ~/ 1000);
      final RemoteUnlockRequestEvent event = RemoteUnlockRequestEvent(
        lockId: lockId,
        timeoutSeconds: timeoutSeconds,
        operateDate: operateDate,
      );
      // 无论当前是否在目标锁详情页，都显示覆盖层以保证体验一致
      if (Get.context == null) {
        _pending.add(event);
        _waitAppReadyAndFlush();
        return;
      }
      await _navigateToLockDetailAndRefire(event);
    });
  }

  void _waitAppReadyAndFlush() {
    Timer.periodic(const Duration(milliseconds: 100), (Timer t) async {
      print('等待app启动中...${Get.context}');
      if (Get.context != null) {
        t.cancel();
        for (final RemoteUnlockRequestEvent e in List<RemoteUnlockRequestEvent>.from(_pending)) {
          await _navigateToLockDetailAndRefire(e);
          print('导航到指定界面成功');
        }
        _pending.clear();
      }
    });
  }

  Future<void> _navigateToLockDetailAndRefire(RemoteUnlockRequestEvent event) async {
    final LockListInfoItemEntity? item = await _findLockItem(event.lockId);
    print('导航item: $item');
    if (item == null) {
      return;
    }
    if(item.hasGateway != 1) {
      return;
    }

    final String? lastHandledStr = await Storage.getString('handledRemoteUnlockOperateDate');
    final int lastHandled = int.tryParse(lastHandledStr ?? '0') ?? 0;
    if (event.timeoutSeconds <= 0) {
      print('远程请求已超时，忽略展示');
      return;
    }
    if (event.operateDate != 0 && event.operateDate == lastHandled) {
      print('重复的远程请求，已处理，忽略展示');
      return;
    }

    _previousRoute = Get.currentRoute;
    _previousArgs = Get.arguments;
    await RemoteUnlockOverlay.show(
      lockId: event.lockId,
      lockAlias: item.lockAlias ?? item.lockName ?? '',
      operateDate: event.operateDate,
      timeoutSeconds: event.timeoutSeconds,
    );

    await Storage.setString('handledRemoteUnlockOperateDate', event.operateDate.toString());
  }

  void restorePreviousRouteIfAny() {
    if (_previousRoute != null) {
      Get.toNamed(_previousRoute!, arguments: _previousArgs);
      _previousRoute = null;
      _previousArgs = null;
    }
  }

  Future<LockListInfoItemEntity?> _findLockItem(int lockId) async {
    final LockListInfoGroupEntity? stored = await Storage.getLockMainListData();
    LockListInfoItemEntity? item;
    if (stored != null) {
      for (final GroupList g in stored.groupList ?? <GroupList>[]) {
        for (final LockListInfoItemEntity l in g.lockList ?? <LockListInfoItemEntity>[]) {
          if ((l.lockId ?? 0) == lockId) {
            item = l;
            break;
          }
        }
        if (item != null) break;
      }
    }
    if (item != null) return item;

    final LockListInfoEntity res = await ApiRepository.to.getStarLockListInfo(pageNo: 1, pageSize: 50, isUnShowLoading: true);
    for (final GroupList g in res.data?.groupList ?? <GroupList>[]) {
      for (final LockListInfoItemEntity l in g.lockList ?? <LockListInfoItemEntity>[]) {
        if ((l.lockId ?? 0) == lockId) {
          return l;
        }
      }
    }
    return null;
  }
}