// 批量升级封装类
import 'package:easydevice/easydevice.dart';
import 'package:ef/ef.dart';
import 'package:flutter/material.dart';
import 'package:vbvs_app/common/util/BluetoothFirmwareUpdater.dart';
import 'package:vbvs_app/component/tool/NewTopSlideNotification.dart';
import 'package:vbvs_app/pages/mh_page/device/model/BlueToothDataModel.dart';
import 'package:vbvs_app/pages/mh_page/device/upgrade/device_upgrade_controller.dart';

class BatchUpgradeManager {
  static final BatchUpgradeManager _instance = BatchUpgradeManager._internal();
  factory BatchUpgradeManager() => _instance;
  BatchUpgradeManager._internal();

  final MultiDeviceFirmwareUpdater _updater = MultiDeviceFirmwareUpdater();
  final MHTDeviceUpgradeController _upgradeController = Get.find();
  
  bool _isBatchUpgrading = false;
  final List<BlueToothDataModel> _batchDevices = [];

  // 开始批量升级
  Future<void> startBatchUpgrade(List<BlueToothDataModel> devices) async {
    if (_isBatchUpgrading) {
      throw Exception("批量升级正在进行中".tr);
    }

    _isBatchUpgrading = true;
    _batchDevices.clear();
    _upgradeController.clearUpgradingList();

    // 验证设备并添加到升级列表
    for (var device in devices) {
      if (device.selected == true) {
        _batchDevices.add(device);
        _upgradeController.addToUpgradingList(device);
      }
    }

    if (_batchDevices.isEmpty) {
      _isBatchUpgrading = false;
      throw Exception("没有选择要升级的设备".tr);
    }

    // 开始批量升级
    try {
      await _startBatchUpgradeInternal();
    } catch (e) {
      _isBatchUpgrading = false;
      rethrow;
    }
  }

  // 内部批量升级实现
  Future<void> _startBatchUpgradeInternal() async {
    final List<Future> upgradeFutures = [];

    for (var device in _batchDevices) {
      final future = _startSingleDeviceUpgrade(device);
      upgradeFutures.add(future);
    }

    // 等待所有升级完成
    try {
      await Future.wait(upgradeFutures, eagerError: false);
    } finally {
      _isBatchUpgrading = false;
      _showBatchUpgradeCompleteNotification();
    }
  }

  // 单个设备升级
  Future<void> _startSingleDeviceUpgrade(BlueToothDataModel device) async {
    try {
      // 创建 THapp 实例
      final thapp = THapp(device: device.scanResult.device);
      
      // 获取固件URL - 需要您提供实现
      final firmwareUrl = await _getFirmwareUrl();
      if (firmwareUrl == null) {
        throw Exception("固件URL为空".tr);
      }

      // 使用现有的升级器进行升级
      await _updater.startUpgrade(
        thapp: thapp,
        mac: device.mac,
        firmwareUrl: firmwareUrl,
      );

      // 升级成功，从列表中移除
      _upgradeController.removeFromUpgradingList(device.mac);

    } catch (e) {
      // 升级失败，也从列表中移除（或者您可以保留失败设备用于重试）
      _upgradeController.removeFromUpgradingList(device.mac);
      rethrow;
    }
  }

  // 获取固件URL - 需要您根据实际情况实现
  Future<String?> _getFirmwareUrl() async {
    // 这里可以从配置、用户选择或其他地方获取固件URL
    // 例如：return _upgradeController.selectedFirmwareUrl;
    return null;
  }

  // 取消批量升级
  void cancelBatchUpgrade() {
    for (var device in _batchDevices) {
      if (_updater.isDeviceUpgrading(device.mac)) {
        _updater.cancelUpgrade(device.mac);
      }
      _upgradeController.removeFromUpgradingList(device.mac);
    }
    
    _isBatchUpgrading = false;
    _batchDevices.clear();
    
    NewTopSlideNotification.show(
      text: "批量升级已取消".tr,
      textColor: Colors.orange,
    );
  }

  // 显示批量升级完成通知
  void _showBatchUpgradeCompleteNotification() {
    final allStatus = _updater.getAllUpgradeStatus();
    final completedCount = allStatus.values.where((status) => 
        status['status'] == 'completed').length;
    final failedCount = allStatus.values.where((status) => 
        status['status'] == 'failed').length;

    String message;
    if (failedCount == 0) {
      message = "批量升级完成，所有 ${_batchDevices.length} 个设备升级成功".tr;
    } else {
      message = "批量升级完成，$completedCount 个成功，$failedCount 个失败".tr;
    }

    NewTopSlideNotification.show(
      text: message,
      textColor: failedCount == 0 ? Colors.green : Colors.orange,
    );
  }

  // 检查是否正在批量升级
  bool get isBatchUpgrading => _isBatchUpgrading;

  // 获取批量升级统计
  Map<String, int> getBatchUpgradeStatistics() {
    final allStatus = _updater.getAllUpgradeStatus();
    
    return {
      'total': _batchDevices.length,
      'completed': allStatus.values.where((status) => 
          status['status'] == 'completed').length,
      'failed': allStatus.values.where((status) => 
          status['status'] == 'failed').length,
      'upgrading': allStatus.values.where((status) => 
          status['status'] == 'upgrading' || status['status'] == 'downloading').length,
      'waiting': allStatus.values.where((status) => 
          status['status'] == 'waiting').length,
    };
  }
}