import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'dart:typed_data';

import 'package:crypto/crypto.dart';
import 'package:date_format/date_format.dart';
import 'package:file_picker/file_picker.dart';
import 'package:flutter_blue_plus/flutter_blue_plus.dart';
import 'package:get/get.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:star_lock/blue/io_protocol/io_getPrivateKey.dart';
import 'package:star_lock/blue/io_protocol/io_getPublicKey.dart';
import 'package:star_lock/blue/io_protocol/io_otaUpgrade.dart';
import 'package:star_lock/blue/io_protocol/io_processOtaUpgrade.dart';
import 'package:star_lock/blue/io_type.dart';
import 'package:star_lock/main/lockDetail/lockSet/lockTime/getServerDatetime_entity.dart';
import 'package:star_lock/mine/addLock/nearbyLock/nearbyLock_page.dart';
import 'package:star_lock/tools/baseGetXController.dart';
import 'package:star_lock/widget/permission/permission_dialog.dart';

import '../../../appRouters.dart';
import '../../../app_settings/app_settings.dart';
import '../../../blue/blue_manage.dart';
import '../../../blue/io_protocol/io_getStarLockStatusInfo.dart';
import '../../../blue/io_reply.dart';
import '../../../blue/io_tool/io_tool.dart';
import '../../../blue/io_tool/manager_event_bus.dart';
import '../../../blue/sender_manage.dart';
import '../../../network/api_repository.dart';
import '../../../tools/storage.dart';
import 'nearbyLock_state.dart';

class NearbyLockLogic extends BaseGetXController {
  final NearbyLockState state = NearbyLockState();

  int otaCount = 0;
  int otaIndex = 0;
  Uint8List? otaBin;
  int startSecond = 0;
  Map? headJson;

  String? deviceName;
  StreamSubscription<Reply>? _replySubscription;

  // 点击连接设备
  void connect(String deviceName) {
    showTitleEasyLoading('${'获取锁信息'.tr} 1/3');
    showBlueConnetctToastTimer(action: () {
      dismissEasyLoading();
    });
    BlueManage().blueSendData(deviceName,
        (BluetoothConnectionState state) async {
      // AppLog.log('点击要添加的设备了');
      if (state == BluetoothConnectionState.connected) {
        // AppLog.log('开始获取公钥');
        IoSenderManage.getPublicKey(lockId: deviceName);
      } else if (state == BluetoothConnectionState.disconnected) {
        dismissEasyLoading();
      }
    }, isAddEquipment: true);
  }

  void _initReplySubscription() {
    _replySubscription =
        EventBusManager().eventBus!.on<Reply>().listen((Reply reply) {
      if (reply is GetPublicKeyReply) {
        _replyGetPublicKey(reply);
      }

      if (reply is GetPrivateKeyReply) {
        _replyGetPrivateKeyKey(reply);
      }

      // 获取锁状态信息
      if (reply is GetStarLockStatuInfoReply && state.ifCurrentScreen.value) {
        _replyGetStarLockStatusInfo(reply);
      }

      if (reply is OTAUpgradeReply) {
        if (reply.status == 0x00) {
          //验证通过，开始发送数据包
          dismissEasyLoading();
          startOTAData();
          processOtaUpgrade();
        } else if (reply.status == 0x06) {
          blueOTAUpgrade(headJson!, reply.token);
        }
      } else if (reply is ProcessOtaUpgradeReply && reply.status == 0x00) {
        otaIndex++;
        processOtaUpgrade();
      } else if (reply is ConfirmationOTAUpgradeReply && reply.status == 0x00) {
        showToast('固件升级完成'.tr);
        closeOTADAta();
      }
    });
  }

  Future<void> _replyGetPublicKey(Reply reply) async {
    // 获取公钥
    switch (reply.status) {
      case 0x00:
        //成功
        // AppLog.log('获取公钥成功');
        // 储存公钥
        final List<int> publicKey = reply.data.sublist(3);
        final List<String> saveStrList = changeIntListToStringList(publicKey);
        Storage.setStringList(saveBluePublicKey, saveStrList);

        // 获取私钥
        // AppLog.log('开始获取私钥');
        showTitleEasyLoading('${'获取锁信息'.tr} 2/3');
        IoSenderManage.getPrivateKey(
            lockId: BlueManage().connectDeviceName,
            keyID: '1',
            authUserID: await Storage.getUid(),
            nowTime: state.serverTime,
            publicKeyData: publicKey,
            needAuthor: 1);
        break;
      default:
        AppLog.log('获取公钥失败');
        break;
    }
  }

  Future<void> _replyGetPrivateKeyKey(Reply reply) async {
    switch (reply.status) {
      case 0x00:
        // AppLog.log('获取私钥成功');
        //成功
        reply.data.removeAt(0);

        // 私钥
        final List<int> privateKey = reply.data.sublist(0, 16);
        final List<String> savePrivateKeyList =
            changeIntListToStringList(privateKey);
        Storage.setStringList(saveBluePrivateKey, savePrivateKeyList);

        // signKey
        final List<int> signKey = reply.data.sublist(16, 32);
        final List<String> saveSignKeyList = changeIntListToStringList(signKey);
        Storage.setStringList(saveBlueSignKey, saveSignKeyList);

        // 时间戳
        final List<int> timestamp = reply.data.sublist(32, 36);
        state.timestampValue = (0xff & timestamp[0]) << 24 |
            (0xff & timestamp[1]) << 16 |
            (0xff & timestamp[2]) << 8 |
            (0xFF & timestamp[3]);
        showTitleEasyLoading('${'获取锁信息'.tr} 3/3');
        _getStarLockStatus();
        break;
      default:
        break;
    }
  }

  // 获取星锁状态
  Future<void> _replyGetStarLockStatusInfo(Reply reply) async {
    final int status = reply.data[2];
    switch (status) {
      case 0x00:
        //成功
        // AppLog.log('获取锁状态成功');
        // 厂商名称
        int index = 3;
        final List<int> vendor = reply.data.sublist(index, index + 20);
        final String vendorStr = utf8String(vendor);
        state.lockInfo['vendor'] = vendorStr;
        // state.lockInfo["vendor"] = "XL";
        index = index + 20;
        // AppLog.log('厂商名称 vendorStr:$vendorStr');

        // 锁设备类型
        final int product = reply.data[index];
        state.lockInfo['product'] = product;
        index = index + 1;
        // AppLog.log('锁设备类型 product:$product');

        // 产品名称
        final List<int> model = reply.data.sublist(index, index + 20);
        final String modelStr = utf8String(model);
        state.lockInfo['model'] = modelStr;
        // state.lockInfo["model"] = "JL-BLE-01";
        index = index + 20;
        // AppLog.log('产品名称 mmodelStr:$modelStr');

        // 软件版本
        final List<int> fwVersion = reply.data.sublist(index, index + 20);
        final String fwVersionStr = utf8String(fwVersion);
        state.lockInfo['fwVersion'] = fwVersionStr;
        index = index + 20;
        // AppLog.log('软件版本 fwVersionStr:$fwVersionStr');

        // 硬件版本
        final List<int> hwVersion = reply.data.sublist(index, index + 20);
        final String hwVersionStr = utf8String(hwVersion);
        state.lockInfo['hwVersion'] = hwVersionStr;
        index = index + 20;
        // AppLog.log('硬件版本 hwVersionStr:$hwVersionStr');

        // 厂商序列号
        final List<int> serialNum0 = reply.data.sublist(index, index + 16);
        final String serialNum0Str = utf8String(serialNum0);
        state.lockInfo['serialNum0'] = serialNum0Str;
        // state.lockInfo["serialNum0"] = "${DateTime.now().millisecondsSinceEpoch ~/ 10}";
        index = index + 16;
        AppLog.log('厂商序列号 serialNum0Str:$serialNum0Str');

        // 成品商序列号
        final List<int> serialNum1 = reply.data.sublist(index, index + 16);
        final String serialNum1Str = utf8String(serialNum1);
        state.lockInfo['serialNum1'] = serialNum1Str;
        index = index + 16;
        // AppLog.log('成品商序列号 serialNum1Str:$serialNum1Str');

        // 蓝牙名称
        final List<int> btDeviceName = reply.data.sublist(index, index + 16);
        final String btDeviceNameStr = utf8String(btDeviceName);
        state.lockInfo['btDeviceName'] = btDeviceNameStr;
        index = index + 16;
        // AppLog.log('蓝牙名称 btDeviceNameStr:$btDeviceNameStr');

        // 电池剩余电量
        final int battRemCap = reply.data[index];
        state.lockInfo['electricQuantity'] = battRemCap;
        index = index + 1;
        // AppLog.log('电池剩余电量 battRemCap:$battRemCap');

        // 备用电池剩余电量
        final int battRemCapStandby = reply.data[index];
        state.lockInfo['electricQuantityStandby'] = battRemCapStandby;
        index = index + 1;
        // AppLog.log('电池剩余电量 battRemCap:$battRemCap');

        // 重置次数
        final List<int> restoreCounter = reply.data.sublist(index, index + 2);
        state.lockInfo['restoreCount'] =
            restoreCounter[0] * 256 + restoreCounter[1];
        index = index + 2;
        // AppLog.log('重置次数 restoreCounter:${restoreCounter[0] * 256 + restoreCounter[1]}');

        // 重置时间
        final List<int> restoreDate = reply.data.sublist(index, index + 4);
        final int restoreDateValue = (0xff & restoreDate[0]) << 24 |
            (0xff & restoreDate[1]) << 16 |
            (0xff & restoreDate[2]) << 8 |
            (0xFF & restoreDate[3]);
        // String restoreDateStr = DateTool().dateToYMDHNSString(restoreDateValue.toString());
        state.lockInfo['restoreDate'] = restoreDateValue * 1000;
        index = index + 4;
        // AppLog.log('重置时间 restoreDateValue:$restoreDateValue');

        // 主控芯片型号
        final List<int> icPartNo = reply.data.sublist(index, index + 10);
        final String icPartNoStr = utf8String(icPartNo);
        state.lockInfo['icPartNo'] = icPartNoStr;
        index = index + 10;
        // AppLog.log('主控芯片型号 icPartNoStr:$icPartNoStr');

        // 有效时间
        final List<int> indate = reply.data.sublist(index, index + 4);
        final int indateValue = (0xff & indate[0]) << 24 |
            (0xff & indate[1]) << 16 |
            (0xff & indate[2]) << 8 |
            (0xFF & indate[3]);
        // String indateStr = DateTool().dateToYMDHNSString("$indateValue");
        state.lockInfo['indate'] = indateValue * 1000;
        index = index + 4;
        // AppLog.log('有效时间 indateValue:$indateValue');

        // mac地址
        final List<int> macAddress = reply.data.sublist(index, index + 20);
        final String macAddressStr = utf8String(macAddress);
        state.lockInfo['mac'] = macAddressStr;
        index = index + 20;
        // AppLog.log('mac地址 macAddressStr:$macAddressStr');

        //时区偏移
        state.lockInfo['timezoneOffset'] =
            DateTime.now().timeZoneOffset.inSeconds;

        // 锁特征值字符串长度
        final int featureValueLength = reply.data[index];
        index = index + 1;
        AppLog.log('锁特征值字符串长度 featureValueLength:$featureValueLength');

        // 锁特征值说明(本机能支持的功能)
        // 获取到锁给的字符数组
        final int featureNetxLength = index + featureValueLength;
        if (reply.data.length < featureNetxLength) {
          showToast('锁数据异常，请重试'.tr);
          return;
        }
        final List<int> featureValue =
            reply.data.sublist(index, index + featureValueLength);
        final String featureValueStr = asciiString(featureValue);
        state.featureValue = featureValueStr;
        // List allFeatureValueTwoList = charListChangeIntList(featureValue);
        // AppLog.log("featureValueLength:$featureValueLength featureValue:$featureValue  \n featureValueStr:$featureValueStr");
        index = index + featureValueLength;
        AppLog.log('锁特征值字符串 featureValueStr:$featureValueStr');

        // 使能特征值字符串长度
        final int featureEnValLength = reply.data[index];
        index = index + 1;
        AppLog.log('使能特征值字符串长度 featureEnValLength:$featureEnValLength');

        // 使能锁特征值说明(本机启用的功能)
        final int featureEnNextLength = index + featureEnValLength;
        if (reply.data.length < featureEnNextLength) {
          showToast('锁数据异常，请重试'.tr);
          return;
        }
        final List<int> featureEnVal =
            reply.data.sublist(index, index + featureEnValLength);
        final String featureEnValStr = asciiString(featureEnVal);
        state.featureSettingValue = featureEnValStr;
        // List allFeatureEnValTwoList = charListChangeIntList(featureEnVal);
        // AppLog.log("featureEnValLength:$featureEnValLength featureEnVal:$featureEnVal \n featureEnValStr:$featureEnValStr");
        index = index + featureEnValLength;
        AppLog.log('使能锁特征值说明 featureEnValStr:$featureEnValStr');

        // 支持的带参数特征值的总条目数
        // var featureParaTotal = reply.data[index];

        final List<int> featureParaTotalList = reply.data.sublist(index);
        state.featureSettingParams = featureParaTotalList;
        AppLog.log('featureParaTotalList:$featureParaTotalList');

        Get.toNamed(Routers.lockAddressGaoDePage, arguments: <String, Object>{
          'pwdTimestamp': state.timestampValue * 1000,
          'lockInfo': state.lockInfo,
          'featureValue': state.featureValue,
          'featureSettingValue': state.featureSettingValue,
          'featureSettingParams': state.featureSettingParams,
        });

        break;
      case 0x06:
        //无权限
        final List<String>? privateKey =
            await Storage.getStringList(saveBluePrivateKey);
        final List<int> getPrivateKeyList =
            changeStringListToIntList(privateKey!);
        IoSenderManage.senderGetStarLockStatuInfo(
          lockID: BlueManage().connectDeviceName,
          userID: await Storage.getUid(),
          utcTimeStamp: state.serverTime,
          unixTimeStamp: getLocalTime(),
          isBeforeAddUser: true,
          privateKey: getPrivateKeyList,
        );
        break;
      default:
        //失败
        break;
    }
  }

  // 获取锁状态
  Future<void> _getStarLockStatus() async {
    // 进来之后首先连接
    // BlueManage().bludSendData(BlueManage().connectDeviceName, (BluetoothConnectionState state) async {
    //   if (state == BluetoothConnectionState.connected) {
    //     dismissEasyLoading();

    // AppLog.log('开始获取锁状态');
    final List<String>? privateKey =
        await Storage.getStringList(saveBluePrivateKey);
    final List<int> getPrivateKeyList = changeStringListToIntList(privateKey!);

    final String getUTCDate = formatDate(
        DateTime.fromMillisecondsSinceEpoch(state.serverTime * 1000),
        <String>[yyyy, '-', mm, '-', dd, ' ', HH, ':', nn, ':', ss]);
    final String getLocalDate = formatDate(
        DateTime.fromMillisecondsSinceEpoch(getLocalTime() * 1000),
        <String>[yyyy, '-', mm, '-', dd, ' ', HH, ':', nn, ':', ss]);

    // AppLog.log('state.serverTime:${state.serverTime} getUTCDate:$getUTCDate '
    //     'getLocalTime:${getLocalTime()} getLocalDate:$getLocalDate '
    //     '差值:${getLocalTime() - state.serverTime}');
    IoSenderManage.senderGetStarLockStatuInfo(
      lockID: BlueManage().connectDeviceName,
      userID: await Storage.getUid(),
      utcTimeStamp: state.serverTime,
      unixTimeStamp: getLocalTime(),
      isBeforeAddUser: true,
      privateKey: getPrivateKeyList,
    );
  }

  void startScanBlueList() {
    BlueManage().startScan(2000, DeviceType.blue, (List<ScanResult> list) {
      state.devices.clear();
      for (int i = 0; i < list.length; i++) {
        final ScanResult device = list[i];
        if ((device.advertisementData.serviceUuids.isNotEmpty
                    ? device.advertisementData.serviceUuids[0]
                    : '')
                .toString()[31] !=
            '1') {
          state.devices.add(list[i]);
        }
      }
    });
  }

  void stopScanBlueList() {
    BlueManage().disconnect();
    BlueManage().stopScan();
  }

  // 点击连接设备,升级 ota 固件
  void oTAUpgrade(String deviceName) {
    showTitleEasyLoading('连接设备中...'.tr);
    this.deviceName = deviceName;
    BlueManage().blueSendData(deviceName,
        (BluetoothConnectionState state) async {
      // AppLog.log('连接设备');
      if (state == BluetoothConnectionState.connected) {
        // AppLog.log('连接成功');
        dismissEasyLoading();
        otaUpdate();
      } else if (state == BluetoothConnectionState.disconnected) {
        // AppLog.log('连接失败');
        dismissEasyLoading();
      }
    }, isAddEquipment: true);
  }

  //手动升级
  Future<void> otaUpdate() async {
    final bool status = await PermissionDialog.requestStorage();
    if (status != true) {
      return;
    }
    final FilePickerResult? result = await FilePicker.platform.pickFiles();
    if (result == null || result.files.single.path is! String) {
      return;
    }
    final File file = File(result.files.single.path!);
    final Uint8List data = await file.readAsBytes();
    headJson = await getHeadFile(data);
    if (headJson is! Map) {
      return;
    }
    otaBin = await checkFile(data, headJson!);
    if (otaBin == null) {
      return;
    }
    final String md5Str = md5.convert(otaBin!).toString();
    headJson!['fwMd5'] = md5Str;
    blueOTAUpgrade(headJson!, <int>[0, 0, 0, 0]);
  }

  //蓝牙操作 ota 升级
  void blueOTAUpgrade(Map data, List<int> token) {
    if (deviceName == null) {
      AppLog.log('blueOTAUpgrade:设备名字为 null');
      return;
    }
    BlueManage().blueSendData(deviceName!,
        (BluetoothConnectionState deviceConnectionState) async {
      if (deviceConnectionState == BluetoothConnectionState.connected) {
        final String uid = await Storage.getUid() ?? '';
        BlueManage().writeCharacteristicWithResponse(OTAUpgradeCommand(
          lockID: deviceName,
          userID: uid,
          keyID: deviceName,
          platform: int.tryParse(data['platform']) ?? 0,
          product: int.tryParse(data['product']) ?? 0,
          hwVersion: data['hwVersion'],
          fwVersion: data['fwVersion'],
          fwSize: data['fwSize'],
          fwMD5: data['fwMd5'],
          needAuthor: 1,
          token: token,
          encrypt: false,
        ).packageData());
      } else if (deviceConnectionState ==
          BluetoothConnectionState.disconnected) {}
    }, isAddEquipment: true);
  }

  //循环传输升级固件包
  Future<void> processOtaUpgrade() async {
    if (!state.otaUpdateIng.value) {
      return;
    }
    final int length = otaBin?.length ?? 0;
    if (otaCount == 0) {
      //首次
      final int difference = length % 240;
      otaCount = length ~/ 240 + (difference > 0 ? 1 : 0);
      startSecond = DateTime.now().millisecondsSinceEpoch;
    }
    if (otaCount <= otaIndex) {
      final int now = DateTime.now().millisecondsSinceEpoch;
      // final String msg = '传输完成 时间：${now - startSecond}秒 otaCount:$otaCount otaIndex:$otaIndex ';
      closeOTADAta();
      AppLog.log(
          '传输完成 时间：${now - startSecond}秒 otaCount:$otaCount otaIndex:$otaIndex ');
      // showToast(msg);
      return;
    }
    final int star = otaIndex * 240;
    int end = (otaIndex + 1) * 240;
    if (end > length) {
      end = length;
    }
    final int size = end - star;
    final List<int> data = otaBin!.sublist(star, end);
    state.otaProgress.value = otaIndex / otaCount;
    await BlueManage().writeCharacteristicWithResponse(
        ProcessOtaUpgradeCommand(index: otaIndex, size: size, data: data)
            .packageData());
  }

  //开始 ota升级
  void startOTAData() {
    state.otaUpdateIng.value = true;
    state.oTAProgressDialog = true;
    Get.dialog(
            OTAProgressDialog(
              logic: this,
            ),
            barrierDismissible: false)
        .then((dynamic value) => state.oTAProgressDialog = false);
  }

  //清楚 ata 安装文件
  void closeOTADAta() {
    if (state.oTAProgressDialog) {
      Get.back();
    }
    state.otaUpdateIng.value = false;
    state.otaProgress.value = 0;
    otaIndex = 0;
    otaCount = 0;
    startSecond = 0;
    otaBin = null;
  }

  // 拦截返回事件
  void getBack() {
    if (state.otaUpdateIng.value) {
      closeOTADAta();
    } else {
      Get.back();
    }
  }

// 检查文件头
  Future<Map?> getHeadFile(Uint8List data) async {
    if (data.length <= 16) {
      showToast('错误固件，请选择正确的文件'.tr);
      return null;
    }
    // 检查文件头
    String header;
    try {
      header = utf8.decode(data.sublist(0, 12));
    } catch (e) {
      showToast('非SYD固件，请选择正确的文件'.tr);
      return null;
    }
    if (header != 'SYD-BIN-DATA') {
      showToast('非SYD固件，请选择正确的文件'.tr);
      return null;
    }
    // 解析元数据长度
    Uint8List metaLenList;
    int metaLen;
    try {
      metaLenList = data.sublist(12, 16);
      metaLen = ByteData.sublistView(metaLenList).getUint32(0);
    } catch (e) {
      showToast('文件校验失败 0x01'.tr);
      return null;
    }
    if (metaLen < 2 || metaLen > 10240) {
      showToast('文件校验失败 0x01'.tr);
      return null;
    }
    // 读取和解析元数据
    Uint8List metaStrList;
    String metaStr;
    try {
      metaStrList = data.sublist(16, 16 + metaLen);
      metaStr = utf8.decode(metaStrList);
    } catch (e) {
      showToast('解析元数据失败，请选择正确的文件'.tr);
      return null;
    }
    AppLog.log(metaStr);
    final meta = jsonDecode(metaStr);
    if (meta is! Map) {
      showToast('解析元数据失败，请选择正确的文件'.tr);
      return null;
    }
    return meta..['metaLen'] = metaLen;
  }

  //检测升级文件并读取 bin
  Future<Uint8List?> checkFile(Uint8List data, Map meta) async {
    final num binOffset = 16 + (meta['metaLen'] ?? 0);
    // 获取固件数据部分
    final Uint8List bin = data.sublist(binOffset.toInt(), data.length);
    //md5 校验有问题，暂时不解析
    final String md5Str = md5.convert(bin).toString().toUpperCase();
    // AppLog.log('---> $md5Str ${meta['fwMd5']}');
    if (md5Str != meta['fwMd5']) {
      showToast('文件校验失败 0x02'.tr);
      return null;
    }
    if (bin.length != meta['fwSize']) {
      showToast('文件校验失败 0x03'.tr);
      return null;
    }
    return bin;
  }

  // 从服务器获取锁的时间 开锁时传入
  Future<void> getServerDatetime() async {
    final GetServerDatetimeEntity entity =
        await ApiRepository.to.getServerDatetimeData(isUnShowLoading: false);
    if (entity.errorCode!.codeIsSuccessful) {
      state.serverTime = entity.data!.date! ~/ 1000;

      if (state.otaState.value) {
        oTAUpgrade(state.selectLockName.value);
      } else {
        connect(state.selectLockName.value);
      }
    }
  }

  int getLocalTime() {
    final DateTime now = DateTime.now();
    final Duration timeZoneOffset = now.timeZoneOffset;
    AppLog.log('timeZoneOffset.inSeconds:$timeZoneOffset.inSeconds');
    return state.serverTime + timeZoneOffset.inSeconds;
  }

  @override
  void onReady() {
    super.onReady();
    getNearByLimits();
  }

  @override
  void onInit() {
    super.onInit();
  }

  @override
  void onClose() {
    super.onClose();
    _replySubscription?.cancel();
  }

  Future<void> getNearByLimits() async {
    if (!Platform.isIOS) {
      // bool bluetoothRequest = false;
      // try {
      //   bluetoothRequest = await PermissionDialog.requestBluetooth();
      //   AppLog.log('bluetoothRequest:$bluetoothRequest');
      //   if (!bluetoothRequest) {
      //     return;
      //   }
      // } catch (e) {
      //   AppLog.log('bluetoothRequest:$e');
      // }
      final bool bluetoothRequest = await PermissionDialog.requestBluetooth();
      final bool locationRequest =
          await PermissionDialog.request(Permission.location);
      AppLog.log('locationRequest:$locationRequest');
      if (!bluetoothRequest || !locationRequest) {
        return;
      }
    }
    _initReplySubscription();
    state.ifCurrentScreen.value = true;
    startScanBlueList();
  }
}