import 'dart:async';
import 'dart:io';

import 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
import 'package:yx_app_upgrade_flutter/app_upgrade_simple.dart';
import 'package:yx_app_upgrade_flutter/models/app_upgrade_version.dart';

/// App 升级服务
class UpgradeAuxiliaryUtils {
  /// 设备类型 1:安卓, 2:IOS
  late final int? deviceType;

  /// 是否已经点击稍后更新按钮
  bool _updateLater = false;

  /// 版本检查是否已完成
  bool completed = false;

  /// 上次检查的版本信息
  AppUpgradeVersion? _lastVersion;

  UpgradeAuxiliaryUtils._() {
    if (Platform.isAndroid) {
      deviceType = 1;
    } else if (Platform.isIOS) {
      deviceType = 2;
    } else {
      deviceType = null;
    }
  }

  Timer? _updateLaterTimer;

  static final UpgradeAuxiliaryUtils _instance = UpgradeAuxiliaryUtils._();

  /// 获取 UpgradeService 单例
  static UpgradeAuxiliaryUtils get instance => _instance;

  /// 启动版本检查
  /// reUpdateLater   是否恢复重新更新
  /// resetTimeMinute 重置时间 默认30分钟
  Future<void> initiateVersionCheck(
    BuildContext context, {
    required Future<AppUpgradeVersion?> Function(int upType) future,
    UpgradeConfig? config,
    bool reUpdateLater = true,
    int resetTimeMinute = 30,
    bool? showNoUpdateToast,
    bool? autoInstall,
    VoidCallback? onComplete,
    VoidCallback? onUpdateLater,
  }) async {
    if (deviceType == null || completed) return;
    completed = true;
    await AppUpgradeSimple.instance.checkUpdate(
      context: context,
      future: () async {
        final result = await future(deviceType!);

        // 如果用户选择了"稍后更新"，且版本未发生变化，则跳过本次检查
        if (_updateLater &&
            _lastVersion != null &&
            result != null &&
            result.versionName == _lastVersion!.versionName &&
            result.versionBuildNumber == _lastVersion!.versionBuildNumber) {
          return null;
        }

        return _lastVersion = result;
      },
      showNoUpdateToast: showNoUpdateToast,
      autoInstall: autoInstall,
      onComplete: () {
        // 版本检查完成
        debugPrint("更新插件执行完成....:");
        completed = false;
        onComplete?.call();
      },
      onUpdateLater: () {
        _updateLater = true;

        /// 30分钟 后重置，可以重新弹出
        if (reUpdateLater) {
          _updateLaterTimer?.cancel();
          _updateLaterTimer = Timer(Duration(seconds: 60 * resetTimeMinute), () {
            _updateLater = false;
          });
        }
        onUpdateLater?.call();
      },
      config: config ?? (kDebugMode ? UpgradeConfig.development : UpgradeConfig.production),
    );
  }
}