import 'dart:async';
import 'dart:collection';
import 'dart:convert';
import 'dart:core';
import 'dart:io';
import 'dart:math';
import 'dart:typed_data';

import 'package:broadcast/broadcast.dart';
import 'package:buffer/buffer.dart';
import 'package:device_info/device_info.dart';
import 'package:flutter/material.dart';
import 'package:flutter_reactive_ble/flutter_reactive_ble.dart';
import 'package:get_it/get_it.dart';
import 'package:package_info/package_info.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:sport/application.dart';
import 'package:sport/bean/hardware.dart';
import 'package:sport/db/bluetooth_db.dart';
import 'package:sport/db/step_db.dart';
import 'package:sport/pages/my/dfu_update_page.dart';
import 'package:sport/services/Converter.dart';
import 'package:sport/services/api/inject_api.dart';
import 'package:sport/services/api/rest_client.dart';
import 'package:sport/utils/toast.dart';
import 'package:sport/utils/version.dart';
import 'package:sport/widgets/dialog/alert_dialog.dart';

const BLE_CODE_0 = 0x00;
const BLE_CODE_1 = 0x01;

class BLE {
  BLE._();

  static const BLE_Client_T_MOTION = 0x04;
  static const BLE_Client_T_UPDATE = 0xA1;
  static const BLE_Client_T_GAMEMODE = 0xA2;
  static const BLE_Client_T_CONNET_R = 0xA3;
  static const BLE_Client_T_SHOCK = 0xA4;
  static const BLE_Client_T_REALTIMESTEP = 0xA5;
  static const BLE_Client_T_DFU = 0xA6;
  static const BLE_Client_T_CHARGE = 0xA7;
  static const BLE_Client_T_LIGHTING = 0xAC;
  static const BLE_Client_T_ERR = 0xAD;
}

class BLE_UPDATE {
  BLE_UPDATE._();

  static const BASIC = 0x00;
  static const DATA = 0x01;
  static const STEP = 0x02;
  static const STEP_DELETE = 0x03;
}

const BLE_UUID = "6e400001-b5a3-f393-e0a9-e50e24dcca9e";

class Bluetooth with ChangeNotifier, InjectApi {
  static final String PREF_KEY = "SHOES";

  factory Bluetooth() => _getInstance();

  static Bluetooth? _instance;

  // 获取对象
  static Bluetooth _getInstance() {
    if (_instance == null) {
      // 使用私有的构造方法来创建对象
      _instance = Bluetooth._internal();
    }
    return _instance!;
  }

  Bluetooth._internal() {
    //初始化(设置一些默认的)...
  }

  final List<StreamSubscription<dynamic>> _streamSubscriptions = <StreamSubscription<dynamic>>[];

  void addSubscription(StreamSubscription<dynamic> streamSubscription) {
    _streamSubscriptions.add(streamSubscription);
  }

  void disposeSubscription() {
    for (StreamSubscription<dynamic> subscription in _streamSubscriptions) {
      subscription.cancel();
    }
    _streamSubscriptions.clear();
    characteristicNotify?.cancel();
  }

  // ignore: close_sinks
  final StreamController<bool> _queryController = StreamController.broadcast();

  Stream<bool> get queryStream => _queryController.stream;

  // ignore: close_sinks
  final StreamController<bool> _stateController = StreamController.broadcast();

  Stream<bool> get stateStream => _stateController.stream;

  // ignore: close_sinks
  final StreamController<Uint8List> _dataController = StreamController.broadcast();

  Stream<Uint8List> get dataStream => _dataController.stream;

  // ignore: close_sinks
  final StreamController<int> _connectRightController = StreamController.broadcast();

  Stream<int> get connectRightStream => _connectRightController.stream;

  final ValueNotifier<DiscoveredDevice?> deviceNotifier = ValueNotifier(null);
  final ValueNotifier<Map> infoNotifier = ValueNotifier<Map>({});
  final ValueNotifier<String> versionNotifier = ValueNotifier<String>("");
  final ValueNotifier<Map> dataNotifier = ValueNotifier<Map>({});
  final ValueNotifier<int> electricityNotifier = ValueNotifier<int>(0);
  final ValueNotifier<int> stepNotifier = ValueNotifier<int>(0);
  final ValueNotifier<int> stepTotalNotifier = ValueNotifier<int>(0);
  final ValueNotifier<int> stepTotalTestNotifier = ValueNotifier<int>(0);
  final ValueNotifier<int> actionNotifier = ValueNotifier<int>(0);
  final ValueNotifier<List<int>> byteNotifier = ValueNotifier<List<int>>([]);
  final ValueNotifier<int> vibrateNotifier = ValueNotifier<int>(400);
  final ValueNotifier<int> stepRealtimeNotifier = ValueNotifier<int>(-1);
  final ValueNotifier<bool> stepRealtimePageNotifier = ValueNotifier<bool>(false);
  final ValueNotifier<Hardware?> verNotifier = ValueNotifier(null);
  final ValueNotifier<Map<int, int>> stateNotifier = ValueNotifier({1: 0, 0: 0});
  final ValueNotifier<bool> h5gameRNotifier = ValueNotifier<bool>(false);
  final ValueNotifier<bool> deviceWriteNotifier = ValueNotifier<bool>(false);
  final ValueNotifier<bool> deviceReadNotifier = ValueNotifier<bool>(false);
  final ValueNotifier<bool> deviceReadNotifyNotifier = ValueNotifier<bool>(false);
  final ValueNotifier<int> rssiNotifier = ValueNotifier<int>(0);
  final ValueNotifier<Map<String, int>> timeUseNotifier = ValueNotifier<Map<String, int>>({});

  DiscoveredDevice? _connectingDevice, _connectedDevice;
  bool _listen = false;
  bool _online = false;
  bool _uploadLoged = false;
  String? _deviceId;

  PartInfo? _partInfo;
  Completer<bool>? _completerStep;
  Completer<bool>? _completerStepDel;
  Completer<bool>? _completerSetupDeviceVer;
  StreamSubscription? scanStreamSubscription;

  QualifiedCharacteristic? characteristicWrite;
  StreamSubscription? characteristicNotify;

  late FlutterReactiveBle flutterReactiveBle;

  Timer? stepRealTimeTimer;
  Timer? gameModeTimer;
  Timer? timerConnected;
  Timer? rssiTimer;
  Timer? disconnectTimer;
  int disconnectTimes = 0;
  DateTime? startTime;
  List<int> timeUse = [];
  int testDfu = 0;
  int _isRightError = 0;

  bool get isConnected => _online;

  bool get isNotReady => isDebugShoe ? false : !(_online == true && electricityNotifier.value > 0);

  bool get isRightError => _isRightError != 1;

  late BuildContext _context;
  bool _showChargeDialog = false;
  DateTime? electricityTime;

  resetData() {
    stepNotifier.value = 0;
    stepTotalNotifier.value = 0;
    actionNotifier.value = 0;
  }

  DiscoveredDevice? get device => _connectedDevice;

  set device(DiscoveredDevice? device) {
    _connectedDevice = device;
    notifyListeners();
  }

  bool _dfu = false;

  set dfu(bool dfu) {
    _dfu = dfu;
  }

  Future<String> _saveDevice(DiscoveredDevice device) async {
    var id = device.id.toString();
    var prefs = await SharedPreferences.getInstance();
    prefs.setString(PREF_KEY, id);
    return id;
  }

  clearDevice({bool deleteStep = false}) async {
    var prefs = await SharedPreferences.getInstance();
    prefs.remove(PREF_KEY);

    if (deleteStep == true) {
      var db = StepDB();
      db.deleteAll();
    }
    startTime = null;
    await disconnectDevice("清空设备");
    this.device = _connectedDevice = null;
  }

  Future<String?> getHistoryDevice() async {
    var prefs = await SharedPreferences.getInstance();
    return prefs.getString(PREF_KEY);
  }

  init(BuildContext context) async {
    this._context = context;
    this._listen = true;

    if (Platform.isAndroid) {
      DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
      AndroidDeviceInfo info = await deviceInfo.androidInfo;

      if (info.version.sdkInt < 31) {
        if (await Permission.locationWhenInUse.status.isGranted != true) return;
      } else {
        Map<Permission, PermissionStatus> statuses = await [
          Permission.bluetoothScan,
          Permission.bluetoothConnect,
        ].request();
        if (statuses.isNotEmpty == true && statuses.values.any((element) => element.isGranted) != true) {
          return;
        }
      }
    }

    flutterReactiveBle = FlutterReactiveBle();
    flutterReactiveBle.statusStream.listen((state) {
      print("bluetooth -- instance state $state");
      if (state == BleStatus.ready) {
        connectDevice();
      } else if (state == BleStatus.unknown) {
      } else if (state == BleStatus.poweredOff) {
        disconnectDevice("蓝牙状态不可用");
        ToastUtil.show("蓝牙服务已关闭");
      } else {}
    });
    flutterReactiveBle.connectedDeviceStream.listen((event) {
      print("bluetooth -- state $event!");
      if (event.connectionState == DeviceConnectionState.connected) {
        if (_deviceId == event.deviceId) {
          final deviceId = _deviceId!;
          notifyConnectTime("C");
          discoverServices(flutterReactiveBle, deviceId).then((value) {
            notifyConnectTime("D$value");

            if (value == 2) {
              setupGameMode(h5gameRNotifier.value);

              queryDeviceRight();

              timerConnected = Timer(Duration(seconds: 30), () {
                if (isRightError) clearDevice();
              });
            } else {}
          });
        }
      } else if (event.connectionState == DeviceConnectionState.disconnected) {
        if (event.failure?.code == ConnectionError.failedToConnect) {
          disconnectDevice("${event.failure?.message}");
          if (event.failure?.message?.contains("133") == true) {
            Future.microtask(() {
              connectDevice(id: event.deviceId);
            });
          }
        }
      }
    });

    versionNotifier.addListener(() {
      if (versionNotifier.value.isNotEmpty) {
        checkUpdate();
      }
    });
    connectRightStream.listen((event) {
      print("bluetooth -- connect right ${_connectingDevice?.name}  ${event}!");
      if (event == 1 && _isRightError != event) {
        notifyConnectTime("R");
        timerConnected?.cancel();
        dataNotifier.value = {};
        infoNotifier.value = {};
        verNotifier.value = null;

        if (_connectingDevice != null) {
          _saveDevice(_connectingDevice!);
          _connected(_connectingDevice!);

          _query();
        }
      }
      _isRightError = event;
    });
  }

  Future listen(BuildContext context, {bool init = false}) async {
    this._context = context;
    this._listen = true;
    print("bluetooth -- listen");
    Broadcast.broadcast("SHOE.SDK.BLUE_DISCONNECT");

    var prefs = await SharedPreferences.getInstance();
    if (!prefs.containsKey("token")) {
      return;
    }

    disconnectTimer?.cancel();
    disconnectTimes = 0;

    if (_dfu == true) return;
    if (!isConnected) {
      connectDevice();
    }
  }

  void runTimer() {
    addSubscription(Stream.periodic(Duration(seconds: 60)).listen((event) async {
      if (device == null) return;
      if (!_online) return;
      await queryDeviceData();
      await queryDeviceStep();
    }));
  }

  Future background(BuildContext context) async {
    this._listen = false;
    if (_showChargeDialog == true) {
      Navigator.maybePop(context);
    }
    disconnectTimer?.cancel();
    disconnectTimer = Timer.periodic(Duration(seconds: 5), (t) {
      disconnectTimes++;
      if (disconnectTimes >= 20) {
        disconnectDevice("后台时断开连接");
        t.cancel();
      }
    });
  }

  Future disposeBluetooth(BuildContext context) async {
    if (_dfu == true) return;
    // // 实时计步中不主动断开
    if (stepRealtimePageNotifier.value == true) return;

    gameModeTimer?.cancel();

    this._listen = false;
    if (_showChargeDialog == true) {
      Navigator.maybePop(context);
    }

    // if (Platform.isIOS) {
    await disconnectDevice("app退后台");
    // }
  }

  resetNotifierData() {
    dataNotifier.value = {};
    infoNotifier.value = {};
    verNotifier.value = null;
    electricityNotifier.value = -1;
    _connectRightController.add(0);
    stateNotifier.value = {0: 0, 1: 0};

    deviceWriteNotifier.value = false;
    deviceReadNotifier.value = false;
    deviceReadNotifyNotifier.value = false;

    _online = false;
    _stateController.add(false);
  }

  Future disconnectDevice(String msg) async {
    print("bluetooth -- disconnect $msg $device");
    _deviceId = null;
    disposeSubscription();

    deviceNotifier.value = null;
    timerConnected?.cancel();

    resetNotifierData();

    disconnectTimes = 0;
    _uploadLoged = false;
    device = _connectedDevice = _connectingDevice = null;
    errQueue.clear();
  }

  Future connectDevice({DiscoveredDevice? device, String? id, bool again = false}) async {
    await disconnectDevice("主动连接");

    if (again != true) {
      timeUse = [];
      timeUseNotifier.value = {};
    }

    if (device != null) {
      startTime = null;
      BluetoothDB().insert(device);
    }
    notifyConnectTime("F");

    String? deviceId = id;

    if (device == null) {
      if (deviceId == null) {
        deviceId = await getHistoryDevice();
      }
      print("bluetooth -- connect from $deviceId $device");
      if (deviceId == null || deviceId.isEmpty) {
        return null;
      }
      try {
        device = await discoverDevice(deviceId: deviceId);
      } catch (e) {
        print(e);
        return;
      }
    }

    if (device == null) return;

    _deviceId = deviceId = device.id;
    print("bluetooth -- connect $deviceId!");
    notifyConnectTime("S");

    addSubscription(flutterReactiveBle
        .connectToDevice(
      id: deviceId,
      connectionTimeout: const Duration(seconds: 8),
    )
        .listen((update) {
      _connectingDevice = device!;
      // print("bluetooth -- connect state $deviceId $update!");
    }, onError: (Object e) {
      print("bluetooth -- connect error $deviceId $e!");
      _connectingDevice = null;
    }));
  }

  Future<DiscoveredDevice?> discoverDevice({String? deviceId, String? deviceName}) async {
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out: 00001800-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out:   00002a00-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out:   00002a01-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out:   00002a04-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out:   00002aa6-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out: 00001801-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out: 6e400001-b5a3-f393-e0a9-e50e24dcca9e
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out:   6e400002-b5a3-f393-e0a9-e50e24dcca9e
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test D/BluetoothController: discovered characteristic write android.bluetooth.BluetoothGatt@28bbf97 android.bluetooth.BluetoothGattCharacteristic@81cd69e
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test I/System.out:   6e400003-b5a3-f393-e0a9-e50e24dcca9e
    // 2022-04-26 11:10:53.285 17454-17479/com.ouj.sdk.test D/BluetoothGatt: setCharacteristicNotification() - uuid: 6e400003-b5a3-f393-e0a9-e50e24dcca9e enable: true
    // 2022-04-26 11:10:53.286 17454-17479/com.ouj.sdk.test D/BluetoothController: discovered characteristic notify android.bluetooth.BluetoothGatt@28bbf97 android.bluetooth.BluetoothGattCharacteristic@9dfb57f
    // 2022-04-26 11:10:53.286 17454-17479/com.ouj.sdk.test I/System.out: 0000fe59-0000-1000-8000-00805f9b34fb
    // 2022-04-26 11:10:53.286 17454-17479/com.ouj.sdk.test I/System.out:   8ec90003-f315-4f60-9fb8-838830daea50

    scanStreamSubscription?.cancel();

    final completer = Completer<DiscoveredDevice?>();

    Timer timeout = Timer(Duration(seconds: 20), () {
      completer.completeError("timeout");
    });

    scanStreamSubscription = flutterReactiveBle.scanForDevices(withServices: [Uuid.parse(BLE_UUID)]).listen((event) {
      print('bluetooth -- scan device : ${event.id} ${event.name}');
      if (event.id == deviceId || event.name == deviceName || (deviceName != null && event.name.contains(deviceName))) {
        if (completer.isCompleted != true) completer.complete(event);
      }
    });
    var device;
    try {
      device = await completer.future.catchError((error, stackTrace) => throw error);
      timeout.cancel();
    } catch (e) {
      print("bluetooth -- shoe right fail $e");
      print(e);
    } finally {
      scanStreamSubscription?.cancel();
    }

    print('bluetooth -- found: ${device?.id} ${device?.name}');
    return device;
  }

  Future<int> discoverServices(FlutterReactiveBle flutterReactiveBle, String deviceId) async {
    int result = 0;
    characteristicNotify?.cancel();

    for (var i = 0; i < 3; i++) {
      bool findWrite = false;
      bool findRead = false;
      try {
        var services = await flutterReactiveBle.discoverServices(deviceId);
        for (DiscoveredService service in services) {
          for (var characteristic in service.characteristics) {
            if (characteristic.isWritableWithoutResponse) {
              characteristicWrite = QualifiedCharacteristic(serviceId: service.serviceId, characteristicId: characteristic.characteristicId, deviceId: deviceId);
              findWrite = true;
              deviceWriteNotifier.value = true;
            }
            if (characteristic.isNotifiable) {
              deviceReadNotifier.value = true;
              findRead = true;
              final qualifiedCharacteristic = QualifiedCharacteristic(serviceId: service.serviceId, characteristicId: characteristic.characteristicId, deviceId: deviceId);
              characteristicNotify = flutterReactiveBle.subscribeToCharacteristic(qualifiedCharacteristic).listen((event) {
                deviceReadNotifyNotifier.value = true;

                if (this._listen == true) {
                  byteNotifier.value = event;
                  parse(event);
                }
              });
            }
          }
        }
      } catch (e) {
        print(e);
        print("bluetooth -- service error $e");
        characteristicNotify?.cancel();
      }
      if (findWrite && findRead) {
        print("bluetooth -- service write: $findWrite, read: $findRead");
        result = 2;
        break;
      } else {
        await Future.delayed(Duration(seconds: 2));
      }
    }

    return result;
  }

  _query() async {
    queryDeviceInfo();
    queryDeviceRight();
    queryDeviceStep();
    queryDeviceCharge();
    queryDeviceData();
  }

  _connected(DiscoveredDevice newDevice) async {
    _stateController.add(true);
    _online = true;
    deviceNotifier.value = newDevice;
    this.device = newDevice;

    if (isDebugShoe) {
      ToastUtil.show("${newDevice.name} 已连接");
    }

    if ((startTime?.difference(DateTime.now()).inHours ?? 1) > 0) {
      notifyConnected();
      startTime = DateTime.now();
    }

    runTimer();

    flutterReactiveBle.connectedDeviceStream.toList().then((value) {
      value.forEach((element) {
        if (element.deviceId != newDevice.id) flutterReactiveBle.clearGattCache(element.deviceId);
      });
    });
  }

  notifyConnectTime(String tag) {
    int now = DateTime.now().millisecondsSinceEpoch;
    Map<String, int> result = timeUseNotifier.value;
    // print("111111111111111111 ${now} ${timeUse}");
    result[tag] = now - (timeUse.isNotEmpty ? timeUse.last : now);
    timeUseNotifier.value = result;
    timeUse.add(now);
  }

  notifyConnected() {
    this.vibrate(200);
    this.lighting(10000);
  }

  checkUpdate() async {
    var info = infoNotifier.value;
    print("bluetooth -- checkUpdate ${info}");
    if (info.isEmpty == true) return;

    String softwareVer = info['softwareVer'];
    String hardwareVer = info['hardwareVer'];
    List<String> device = info['device'];

    PackageInfo packageInfo = await PackageInfo.fromPlatform();
    String appVer = packageInfo.version;

    Hardware? updateInfo = (await GetIt.I<RestClient>().checkHardwareUpdate(hardwareVer, appVer)).data;
    if (updateInfo != null) {
      // PackageInfo packageInfo = await PackageInfo.fromPlatform();
      // if (updateInfo.min_app_ver?.isNotEmpty == true && versionCompare(packageInfo.version, updateInfo.min_app_ver ?? "0") < 0) {
      //   debugPrint("bluetooth -- dfu update app ver ${packageInfo.version} min ${updateInfo.min_app_ver}");
      //   return;
      // }
      // if (updateInfo.max_app_ver?.isNotEmpty == true && versionCompare(packageInfo.version, updateInfo.max_app_ver ?? "0") > 0) {
      //   debugPrint("bluetooth -- dfu update app ver ${packageInfo.version} max ${updateInfo.max_app_ver}");
      //   return;
      // }
      //
      // if (updateInfo.min_hardware_ver?.isNotEmpty == true && versionCompare(hardwareVer, updateInfo.min_hardware_ver ?? "0") < 0) {
      //   debugPrint("bluetooth -- dfu update hardware ver ${hardwareVer} min ${updateInfo.min_hardware_ver}");
      //   return;
      // }
      //
      // if (updateInfo.max_hardware_ver?.isNotEmpty == true && versionCompare(hardwareVer, updateInfo.max_hardware_ver ?? "0") > 0) {
      //   debugPrint("bluetooth -- dfu update hardware ver ${hardwareVer} max ${updateInfo.max_hardware_ver}");
      //   return;
      // }

      updateInfo.devices = [];
      updateInfo.localVer = softwareVer;
      print("bluetooth -- dfu versionCompare ${versionCompare(softwareVer, updateInfo.ver ?? "0.0")}");
      bool cancelable = this.testDfu >= 5
          ? true
          : Platform.isAndroid
              ? !inProduction
              : false;
      if (cancelable == false) {
        if (versionCompare(softwareVer, updateInfo.ver ?? "0.0") >= 0) {
          return;
        }
      }
      for (var i = device.length - 1; i >= 0; i--) {
        updateInfo.devices!.add(device[i]);
      }
      verNotifier.value = updateInfo;

      if (isDebugShoe) {
        var context = _context;
        var value = updateInfo;
        var closeable = 0;
        var result = await showDialog(
          context: context,
          barrierDismissible: false,
          builder: (context) => CustomAlertDialog(
              title: '发现新的鞋子固件',
              child: WillPopScope(
                onWillPop: () async {
                  return false;
                },
                child: GestureDetector(
                  behavior: HitTestBehavior.opaque,
                  onTap: () {
                    closeable++;
                    if (closeable >= 5) {
                      Navigator.of(context).pop(false);
                    }
                  },
                  child: Container(
                      width: double.infinity,
                      padding: const EdgeInsets.symmetric(horizontal: 24.0),
                      child: Text(
                        "${value.name}\n${value.localVer} -> ${value.ver}\n${value.msg}",
                        style: TextStyle(fontSize: 14, color: Color(0xff333333), height: 1.8),
                      )),
                ),
              ),
              textOk: '立即升级',
              cancelable: cancelable,
              ok: () => Navigator.of(context).pop(true)),
        );

        if (result != true) return;
        result = await showDialog(
            context: context,
            barrierDismissible: false,
            builder: (context) => SimpleDialog(
                  children: <Widget>[
                    DfuUpdatePage(
                      hardware: value,
                    )
                  ],
                ));
      }
    }
  }

  void parse(List<int> event) {
    if (event.isEmpty == true) return;
    if (!_listen) return;
    ByteDataReader reader = ByteDataReader();
    reader.add(event);

    int flagAA = reader.readUint8();
    // int flagBB = reader.readUint8();
    // int flagCC = reader.readUint8();

    int len = reader.readUint8();
    int len1 = 0xFF - reader.readUint8();

    // int index = reader.readUint8();
    int cmd = reader.readUint8();

    // print("                         change --> ${flagAA} ${len} ${~len} ${cmd}");
    // print("                         change --> ${len} ${~len} ${len1}");
    // print("                         change --> ${index} ${cmd}");

    if (!(flagAA == 0xAA)) return;
    if (len != len1) return;

    Uint8List byteArray = reader.read(event.length - 5);

    int ver = 0;
    for (int i = 0; i < event.length - 1; i++) {
      ver += event[i];
    }

    if (ver.toUnsigned(8) != event[event.length - 1]) return;

    parseCmd(cmd, byteArray);
  }

  void parseCmd(int cmd, Uint8List byteArray) {
    // if (isDebugShoe) print("                        cmd $cmd data --> $byteArray");

    switch (cmd) {
      case 0x01:
        _parseAction(byteArray);
        break;
      case BLE.BLE_Client_T_MOTION:
        disconnectTimes = 0;
        _dataController.add(byteArray);
        break;
      case 0xA0:
        break;
      case BLE.BLE_Client_T_UPDATE:
        _parseQuery(byteArray);
        break;
      case BLE.BLE_Client_T_CONNET_R:
        _connectRightController.add(byteArray.first);
        break;
      case BLE.BLE_Client_T_REALTIMESTEP:
        _parseStepRealtime(byteArray);
        break;
      case BLE.BLE_Client_T_DFU:
        if (_completerSetupDeviceVer?.isCompleted != true) _completerSetupDeviceVer?.complete(true);
        break;
      case BLE.BLE_Client_T_CHARGE: //充电
        _parseCharge(byteArray);
        break;
      case BLE.BLE_Client_T_ERR: //异常
        _parseErr(byteArray);
        break;
      case BLE.BLE_Client_T_GAMEMODE:
        break;
    }
  }

  void _parseAction(Uint8List byteArray) {
    ByteDataReader reader = ByteDataReader();
    reader.add(byteArray);
    int action = reader.readUint8();
    int t = reader.readUint16();
    print("action: $action ");
    actionNotifier.value = action;
  }

  void _parseQuery(Uint8List byteArray) {
    ByteDataReader reader = ByteDataReader();
    reader.add(byteArray);
    int cmd = reader.readUint8();
    switch (cmd) {
      case BLE_UPDATE.BASIC: // 设备基本信息
        Map<String, dynamic> info = {};
        List<int> name = [];
        for (var i = 0; i < 64; i++) {
          name.add(reader.readUint8());
        }
        info['name'] = String.fromCharCodes(name).replaceAll("\u0000", "");
        List<int> softwareVer = [];
        List<int> hardwareVer = [];
        List<String> device = [];

        for (var i = 0; i < 2; i++) {
          List<String> macList = [];
          for (var j = 0; j < 6; j++) {
            macList.add(reader.readUint8().toRadixString(16).padLeft(2, "0"));
          }
          var mac = macList.join(":").toUpperCase();
          print("mac $i = $mac");

          for (var k = 0; k < 4; k++) {
            hardwareVer.add(reader.readUint8());
          }
          softwareVer.add(reader.readUint8());

          device.add(mac);
        }
        print("bluetooth dfu info $hardwareVer $softwareVer");

        if (hardwareVer.length != 8 || softwareVer.length != 2) return;

        String leftHardware = hardwareVer.sublist(1, 4).join(".");
        String rightHardware = hardwareVer.sublist(4 + 1, hardwareVer.length).join(".");
        int compareHardware = versionCompare(leftHardware, rightHardware);
        String minHardwareVersion = compareHardware < 0 ? leftHardware : rightHardware;
        print("bluetooth hardwareVer  $leftHardware $rightHardware $compareHardware $minHardwareVersion");

        String leftSoftware = hardwareVer.sublist(1, 3).join(".") + ".${softwareVer[0]}";
        String rightSoftware = hardwareVer.sublist(4 + 1, 4 + 1 + 2).join(".") + ".${softwareVer[0]}";
        int compareSoftware = versionCompare(leftSoftware, rightSoftware);
        String minSoftwareVersion = compareSoftware < 0 ? leftSoftware : rightSoftware;
        print("bluetooth softwareVer  $leftSoftware $rightSoftware $compareSoftware $minSoftwareVersion");

        shoeVersion = "$minHardwareVersion";

        info['softwareVer'] = minSoftwareVersion;
        info['hardwareVer'] = minHardwareVersion;
        info['mac'] = device.length > 1 ? device.first : "";
        info['device'] = device;

        infoNotifier.value = info;
        if (versionNotifier.value != minSoftwareVersion) versionNotifier.value = minSoftwareVersion;

        _uploadErr();
        if (_uploadLoged != true) {
          _uploadLog();
        }

        break;
      case BLE_UPDATE.DATA: // 设备数据(左鞋,右鞋)
        Map<String, dynamic> info = {};
        for (var i = 0; i < 2; i++) {
          info['${i}_electricity'] = reader.readUint8();
          info['${i}_temperature'] = reader.readUint8();
          info['${i}_pressure'] = reader.readUint(4);
          reader.readUint(4);
        }
        if (reader.remainingLength >= 4) {
          info['0_adc'] = reader.readUint16();
          info['1_adc'] = reader.readUint16();
        }
        // [170, 187, 204, 23, 232, 0, 161, 1, 50, 0, 33, 0, 0, 156, 41, 51, 0, 34, 0, 0, 150, 19, 232]
        dataNotifier.value = info;
        int electricity = min(info['0_electricity'] ?? 0, info['1_electricity'] ?? 0);
        electricityNotifier.value = electricity;

        if (electricity < 10) {
          if (electricityTime == null || (electricityTime?.difference(DateTime.now()).inMinutes.abs() ?? 0) >= 60) {
            if (_showChargeDialog != true) {
              ToastUtil.show("鞋子电量不足，请及时充电！");
              electricityTime = DateTime.now();
            }
          }
        }

        if (isDebugShoe) {
          _testElectricity(info);
        }
        break;
      case BLE_UPDATE.STEP: // 查询步数
        print("bluetooth -- step part ${_partInfo?.ready}");
        if (_partInfo == null) return;
        if (_partInfo?.ready == true) return;
        if (isDebugShoe) {
          _testStep(byteArray.toList().join(","));
        }

        int start = reader.readUint64();
        int serialCount = reader.readUint16();
        int serial = reader.readUint16();
        // if(serialCount == 0){
        //   _completerStep?.complete(false);
        //   return;
        // }
        List<int> data = [];
        while (reader.remainingLength > 0) {
          data.add(reader.readUint32());
        }

        if (serial == 0 && data.isNotEmpty) {
          stepTotalNotifier.value = data.last;
        }

        _partInfo!.start = start;
        _partInfo!.serialCount = serialCount + 1;
        _partInfo!.data[serial] = data;
        print("bluetooth -- step start $start read ($serial,$serialCount) --> $data");

        if (_partInfo!.data.length == _partInfo!.serialCount) {
          _partInfo!.ready = true;

          var partResult = _partInfo!;
          Future.microtask(() async {
            await partResult.prepare();
            print("bluetooth -- step end ... ");
            await _saveInfo(partResult);
          });
          if (_completerStep?.isCompleted != true) _completerStep?.complete(true);
        }

        break;
      case BLE_UPDATE.STEP_DELETE: // 步数回调
        if (_completerStepDel != null) _completerStepDel!.complete(true);
        break;
    }
  }

  void _parseStepRealtime(Uint8List byteArray) {
    ByteDataReader reader = ByteDataReader();
    reader.add(byteArray);
    int cmd = reader.readUint8();
    if (cmd == 0) {
    } else if (cmd == 1) {
      int left = 0;
      int right = 0;
      if (reader.remainingLength > 4) {
        left = reader.readUint32();
        right = reader.readUint32();
      } else {
        left = reader.readUint16();
        right = reader.readUint16();
      }
      int step = left + right;
      // print("left: ${left}, right: ${ right} = ${step}");
      stepRealtimeNotifier.value = step;
      // 已经不是在实时计步页面，但还收到数据，关了！
      if (stepRealtimePageNotifier.value == false) {
        write(BLE.BLE_Client_T_REALTIMESTEP, Uint8List.fromList([BLE_CODE_0]));
      }
    }
  }

  void _parseCharge(Uint8List byteArray) async {
    ByteDataReader reader = ByteDataReader();
    reader.add(byteArray);
    int cmd = reader.readUint8();
    int state = reader.readUint8();
    Map<int, int> _state = Map.from(stateNotifier.value);
    _state.update(cmd, (value) => state);
    stateNotifier.value = _state;
    // print("111111111111111111111111 $_state");
    if (_state[0]! <= 1 && _state[1]! <= 1) {
      if (_showChargeDialog == true) {
        Navigator.maybePop(_context);
      }
      return;
    }
    if (_state[0] == 3 && _state[1] == 3) {
      queryDeviceData();
    }

    final String _name = "dialog_charge";
    if (_showChargeDialog == true) return;
    _showChargeDialog = true;
    showDialog(
            context: _context,
            barrierColor: Colors.transparent,
            builder: (context) => GestureDetector(
                  behavior: HitTestBehavior.opaque,
                  onTap: () {
                    Navigator.maybePop(context);
                  },
                  child: Scaffold(
                    backgroundColor: Colors.transparent,
                    body: Center(
                      child: Container(
                          constraints: BoxConstraints(maxWidth: 180.0),
                          decoration: BoxDecoration(
                            borderRadius: BorderRadius.all(Radius.circular(10.0)),
                            color: Colors.black.withOpacity(.75),
                          ),
                          child: Column(
                            mainAxisSize: MainAxisSize.min,
                            children: [
                              Align(
                                child: GestureDetector(
                                  child: Padding(
                                    padding: const EdgeInsets.all(10.0),
                                    child: Image.asset(
                                      "lib/assets/img/btn_close_white.png",
                                      width: 18,
                                    ),
                                  ),
                                  onTap: () {
                                    Navigator.maybePop(context);
                                  },
                                  behavior: HitTestBehavior.opaque,
                                ),
                                alignment: Alignment.topRight,
                              ),
                              Padding(
                                padding: const EdgeInsets.fromLTRB(20.0, 5, 20.0, 16.0),
                                child: ValueListenableBuilder<Map<int, int>>(
                                    valueListenable: stateNotifier,
                                    builder: (context, val, __) {
                                      int totalState = (val[0]! + val[1]!) ~/ 2;
                                      List<int> keys = val.keys.toList();
                                      keys.sort();
                                      return Column(
                                        children: [
                                          Center(
                                            child: Row(
                                              children: keys.map((key) {
                                                int state = val[key]!;
                                                String label = key == 0 ? "left" : "right";
                                                return Padding(
                                                  padding: EdgeInsets.symmetric(horizontal: 10),
                                                  child: Image.asset(
                                                    state == 3
                                                        ? "lib/assets/img/pop_icon_${label}full.png"
                                                        : state == 2
                                                            ? "lib/assets/img/pop_icon_${label}charge.png"
                                                            : "lib/assets/img/pop_icon_${label}fault.png",
                                                  ),
                                                );
                                              }).toList(),
                                              mainAxisSize: MainAxisSize.min,
                                            ),
                                          ),
                                          const SizedBox(
                                            height: 15,
                                          ),
                                          ValueListenableBuilder(
                                            valueListenable: electricityNotifier,
                                            builder: (BuildContext context, int value, Widget? child) {
                                              int _power = max(0, (val[0]! > 1 && val[1]! > 1) ? value : 0);
                                              return Column(
                                                children: [
                                                  Text(
                                                    (_power > 1) ? "$_power%" : "",
                                                    style: TextStyle(fontSize: 8.0, color: Colors.white),
                                                  ),
                                                  const SizedBox(
                                                    height: 7,
                                                  ),
                                                  ClipRRect(
                                                    child: SizedBox(
                                                      height: 2,
                                                      child: LinearProgressIndicator(
                                                        backgroundColor: Color(0xff656565),
                                                        valueColor: AlwaysStoppedAnimation(Color(0xff00DC42)),
                                                        value: _power / 100,
                                                      ),
                                                    ),
                                                    borderRadius: BorderRadius.circular(5),
                                                  )
                                                ],
                                              );
                                            },
                                          ),
                                          const SizedBox(
                                            height: 11,
                                          ),
                                          Text(
                                            (val[0] == 3 && val[1] == 3)
                                                ? "智能鞋充电已完成"
                                                : (val[0]! > 1 && val[1]! > 1)
                                                    ? "智能鞋充电中..."
                                                    : (val[0]! <= 1 && val[1]! <= 1)
                                                        ? "智能鞋连接异常"
                                                        : val[0]! <= 1
                                                            ? "左鞋充电连接异常"
                                                            : val[1]! <= 1
                                                                ? "右鞋充电连接异常"
                                                                : "连接异常",
                                            style: TextStyle(fontSize: 12.0, color: Colors.white),
                                          ),
                                        ],
                                      );
                                    }),
                              ),
                            ],
                          )),
                    ),
                  ),
                ),
            routeSettings: RouteSettings(name: _name))
        .then((value) => _showChargeDialog = false);
    await Future.delayed(Duration(seconds: 5));
    if (_showChargeDialog == true) {
      Map<int, int> val = stateNotifier.value;
      print("_parseCharge $val");
      if (val[0]! > 1 && val[1]! > 1) {
        Navigator.maybePop(_context);
      }
    }
  }

  Queue<Map<String, String>> errQueue = Queue();

  /**
   * 错误处理
   */
  void _parseErr(Uint8List byteArray) async {
    ByteDataReader r = ByteDataReader();
    r.add(byteArray);
    int leftOrRight = r.readUint8();
    int code = r.readUint8();
    List<int> msgData = r.read(r.remainingLength);
    String msg = String.fromCharCodes(msgData);
    print("bluetooth - _parseErr $leftOrRight $code $msg");
    var err = {"code": "$code", "msg": "${leftOrRight == 0 ? "左鞋" : "右鞋"}：$msg"};
    if (errQueue.where((element) => element["code"] == "$code").isEmpty) errQueue.addLast(err);
    if (isDebugShoe) {
      await _testErrLog();
    }
    _uploadErr();
  }

  void _uploadErr() async {
    if (infoNotifier.value.isEmpty) return;
    if (errQueue.isEmpty) return;
    var info = infoNotifier.value;
    PackageInfo packageInfo = await PackageInfo.fromPlatform();

    String mac = "${info['mac']}";
    String firmware = "${info['softwareVer']}";
    String hardware = "${info['hardwareVer']}";
    String app_ver = "${packageInfo.version}";

    while (errQueue.isNotEmpty) {
      var first = errQueue.removeFirst();
      var err_code = first['code'] as String;
      var err_msg = first['msg'] as String;

      var resp = await api.logHardwareErr(mac, firmware, hardware, app_ver, err_code, err_msg, "");
      if (resp.code != 0) {
        errQueue.addLast(first);
        await Future.delayed(Duration(seconds: 5));
      }
    }
  }

  Future _saveInfo(PartInfo? partInfo) async {
    if (partInfo == null) return;
    print("bluetooth -- step save $partInfo ${partInfo.items.length}");
    if (partInfo.items.isEmpty == true) return;

    List<PartItem> _items = [];
    for (var item in partInfo.items) {
      if (item.step == 0 && item.distance == 0) continue;
      _items.add(item);
      print("bluetooth -- step save ${item.time} ${item.step}");
    }
    await StepDB().insertAll(_items);
    _queryController.add(true);
  }

  Future<int> _uploadInfo(int startTime) async {
    var list = await StepDB().find(startTime);
    print("bluetooth -- step upload $startTime $list");
    if (list.isEmpty) return 0;

    List<List<int>> data = [];
    int step = 0;
    for (var item in list) {
      data.add([item['st'], item['di'], (item['time'] as int) ~/ 1000]);
      step += Converter.toInt(item['st']);
    }
    if (step > 5) {
      var resp = await api.addDaily(data: json.encode(data));
      if (resp.code == 0) {
        // await StepDB().delete(last);
        return 0;
      }
    }
    return -1;

    // Directory appDocDir = await getApplicationDocumentsDirectory();
    // String appDocPath = appDocDir.path;
    // Directory saveDir = Directory("$appDocPath/step");
    // var files = saveDir.listSync();
    // for(var file in files){
    //   var f= new File(file.path);
    //   var content = f.readAsStringSync();
    //   await api.addDaily(data: content);
    //   file.delete();
    // }
  }

// 查询 设备基本信息
  Future queryDeviceCharge() async {
    await write(BLE.BLE_Client_T_CHARGE, Uint8List(0));
  }

// 查询 设备右鞋
  Future queryDeviceRight() async {
    await write(BLE.BLE_Client_T_CONNET_R, Uint8List.fromList([]));
  }

// 查询 设备基本信息
  Future queryDeviceInfo() async {
    await write(BLE.BLE_Client_T_UPDATE, Uint8List.fromList([BLE_CODE_0]));
  }

// 查询 设备数据
  Future queryDeviceData() async {
    await write(BLE.BLE_Client_T_UPDATE, Uint8List.fromList([BLE_CODE_1]));
  }

// 查询 查询步数
  Future queryDeviceStep({bool test = false}) async {
    if (!isConnected) return;
    // await Future.delayed(Duration(seconds: 3));
    // _queryController.add(true);
    if (test != true) if (stepTotalTestNotifier.value == 1) return;
    if (_partInfo != null) {
      print("bluetooth -- step _partInfo.now ${_partInfo!.now.difference(DateTime.now()).inSeconds}");
      if ((_partInfo!.now.difference(DateTime.now()).inSeconds) > -60) {
        return;
      }
    }

    print("bluetooth -- step init");
    _partInfo = PartInfo(0, 0);
    if (test == true) stepTotalNotifier.value = -1;
    // await write(0xA1, createTime(0x02));
    await write(BLE.BLE_Client_T_UPDATE, Uint8List.fromList([BLE_UPDATE.STEP, BLE_CODE_0, BLE_CODE_0]));

    if (_completerStep != null && _completerStep?.isCompleted != true) _completerStep?.complete(false);
    if (_completerStepDel != null && _completerStepDel?.isCompleted != true) _completerStepDel?.complete(false);

    _completerStep = Completer();
    _completerStepDel = Completer();

    var timer = Timer.periodic(Duration(seconds: 1), (timer) {
      if (_partInfo == null) return;
      Iterable<int> keys = _partInfo!.data.keys;
      if (keys.isEmpty) return;
      for (var i = 1; i < _partInfo!.serialCount; i++) {
        if (!keys.contains(i)) {
          print("bluetooth -- step request package $i");
          // 请求缺包
          ByteDataWriter writer = ByteDataWriter();
          writer.writeUint8(BLE_UPDATE.STEP);
          writer.writeUint16(i);
          write(BLE.BLE_Client_T_UPDATE, writer.toBytes());
        }
      }
    });
    Timer timeout = Timer(Duration(seconds: 20), () {
      if (_completerStep?.isCompleted != true) _completerStep?.complete(false);
    });
    var result = await _completerStep!.future;
    timeout.cancel();
    timer.cancel();
    int stepTotal = 0;
    if (result == true) {
      await _saveInfo(_partInfo);
      int code = await _uploadInfo(_partInfo!.start);

      if (isDebugShoe) {
        var now = DateTime.now();
        _partInfo?.items.forEach((element) {
          var info = {"t": element.time, "s": element.step, "total": element.absolute};
          _testStep("${now.hour},${now.minute},${now.second},${info['t']},${info['s']},${info['total']}");
        });
      }
      if (test == true) {
        if (_partInfo?.items.isNotEmpty == true) {
          stepTotal = _partInfo?.items.map((e) => e.step).reduce((value, element) => value + element) ?? 0;
        } else {
          stepTotal = 0;
        }
      }

      if (code == 0) {
        var timer = Timer.periodic(Duration(milliseconds: 1000), (timer) {
          write(BLE.BLE_Client_T_UPDATE, createTime(BLE_UPDATE.STEP_DELETE));
        });
        Timer timeout = Timer(Duration(seconds: 60), () {
          if (_completerStepDel?.isCompleted != true) _completerStepDel?.complete(false);
        });
        await _completerStepDel!.future;
        timer.cancel();
        timeout.cancel();
      }
      _completerStepDel = null;
    }
    _partInfo = null;
    print("bluetooth -- step reset");
    stepNotifier.value = stepTotal;
  }

// 固件升级
  Future<bool> setupDeviceVer(int type) async {
    _completerSetupDeviceVer = Completer();
    try {
      write(BLE.BLE_Client_T_DFU, Uint8List.fromList([type]));
    } catch (e) {
      print(e);
    }
    Timer timeout = Timer(Duration(seconds: 10), () {
      if (_completerSetupDeviceVer?.isCompleted != true) _completerSetupDeviceVer?.complete(false);
    });
    var result = (await _completerSetupDeviceVer?.future) ?? false;
    timeout.cancel();
    return result;
  }

// 游戏模式
  Future setupGameMode(bool mode) async {
    if (mode == false && h5gameRNotifier.value == true) {
      return;
    }
    gameModeTimer?.cancel();
    if (mode) {
      gameModeTimer = Timer.periodic(Duration(seconds: 60), (timer) {
        if (this._listen == true) write(BLE.BLE_Client_T_GAMEMODE, Uint8List.fromList([BLE_CODE_1]));
      });
    }
    await write(BLE.BLE_Client_T_GAMEMODE, mode ? Uint8List.fromList([BLE_CODE_1]) : Uint8List.fromList([BLE_CODE_0]));
  }

  Future setupGameMode4h5(bool mode) async {
    h5gameRNotifier.value = mode;
    setupGameMode(mode);
  }

  Future setupDataDebug(bool mode) async {
    await write(BLE.BLE_Client_T_GAMEMODE, mode ? Uint8List.fromList([BLE_CODE_1 + 1]) : Uint8List.fromList([BLE_CODE_0]));
    //
    // device?.rssi.listen((event) {
    //   rssiNotifier.value = event;
    // });
    //
    // rssiTimer?.cancel();
    // if (mode == true) {
    //   rssiTimer = Timer.periodic(Duration(seconds: 1), (timer) {
    //     device?.requestRssi();
    //   });
    // }
  }

  Future vibrate(int vibrate, {int leftOrRight = 0}) async {
    int duration = min(1000, max(100, vibrate));
    ByteDataWriter writer = ByteDataWriter();
    writer.writeUint16(duration);
    writer.writeUint8(leftOrRight);
    await write(BLE.BLE_Client_T_SHOCK, writer.toBytes());
  }

  Future lighting(int time) async {
    int duration = min(10000, max(100, time));
    ByteDataWriter writer = ByteDataWriter();
    writer.writeUint16(duration);
    await write(BLE.BLE_Client_T_LIGHTING, writer.toBytes());
  }

  Future stepRealTime(bool mode) async {
    stepRealtimeNotifier.value = -1;
    stepRealtimePageNotifier.value = mode;
    await write(BLE.BLE_Client_T_REALTIMESTEP, mode ? Uint8List.fromList([BLE_CODE_1]) : Uint8List.fromList([BLE_CODE_0]));

    stepRealTimeTimer?.cancel();
    if (mode == true) {
      stepRealTimeTimer = Timer.periodic(Duration(seconds: 10), (timer) {
        write(BLE.BLE_Client_T_REALTIMESTEP, Uint8List.fromList([BLE_CODE_1]));
      });
    }
  }

  Uint8List createTime(int cmd) {
    DateTime now = DateTime.now();
    DateTime offset = DateTime(now.year, now.month, now.day, now.hour);
    print("create now .. $now - $offset ($offset.millisecondsSinceEpoch)");
    ByteDataWriter writer = ByteDataWriter();
    writer.writeUint8(cmd);
    writer.writeUint64(offset.millisecondsSinceEpoch);
    writer.writeUint8(max(0, min(60, now.minute - offset.minute)));
    return writer.toBytes();
  }

  Future write(int cmd, Uint8List data) async {
    if (characteristicWrite == null) return;

    int length = data.length + 5;
    ByteDataWriter writer = ByteDataWriter();
    writer.writeUint8(0xAA);
    // writer.writeUint8(0xBB);
    // writer.writeUint8(0xCC);
    writer.writeUint8(length);
    writer.writeUint8(0xFF - length);
    // writer.writeUint8(0x00);
    writer.writeUint8(cmd);
    if (data.isNotEmpty) writer.write(data);
    int ver = writer.toBytes().reduce((value, element) => value + element);
    writer.writeUint8(ver);
    Uint8List out = writer.toBytes();
    print("out $out");
    // print("out ${out.map((e) => e.toRadixString(16)).join(",")}");
    for (var i = 0; i < 10; i++) {
      try {
        await flutterReactiveBle.writeCharacteristicWithoutResponse(characteristicWrite!, value: out);
        break;
      } catch (e) {
        print(e);
        await Future.delayed(Duration(milliseconds: 100));
      }
    }
  }

  Future writeUintList(Uint8List data) async {
    if (characteristicWrite == null) return;

    int length = data.length + 4;
    ByteDataWriter writer = ByteDataWriter();
    writer.writeUint8(0xAA);
    // writer.writeUint8(0xBB);
    // writer.writeUint8(0xCC);
    writer.writeUint8(length);
    writer.writeUint8(0xFF - length);
    // writer.writeUint8(0x00);
    if (data.isNotEmpty) writer.write(data);
    int ver = writer.toBytes().reduce((value, element) => value + element);
    writer.writeUint8(ver);
    Uint8List out = writer.toBytes();
    print("out $out");
    for (var i = 0; i < 10; i++) {
      try {
        await flutterReactiveBle.writeCharacteristicWithoutResponse(characteristicWrite!, value: out);
        break;
      } catch (e) {
        print(e);
        await Future.delayed(Duration(milliseconds: 10));
      }
    }
  }

  _uploadLog() async {
    DiscoveredDevice? device = this.device;

    if (device == null) return;
    var info = infoNotifier.value;
    if (info.isEmpty == true) return;

    final api = GetIt.I<RestClient>();

    PackageInfo packageInfo = await PackageInfo.fromPlatform();

    DeviceInfoPlugin deviceInfo = DeviceInfoPlugin();
    String os_name = Platform.operatingSystem;
    String os_ver = Platform.operatingSystemVersion;
    String phone_brand = "";
    String phone_model = "";

    if (Platform.isAndroid) {
      AndroidDeviceInfo androidDeviceInfo = await deviceInfo.androidInfo;
      phone_brand = androidDeviceInfo.brand;
      phone_model = androidDeviceInfo.model;
    } else if (Platform.isIOS) {
      IosDeviceInfo iosDeviceInfo = await deviceInfo.iosInfo;
      phone_brand = iosDeviceInfo.name;
      phone_model = iosDeviceInfo.model;
    }
    api.onConnBt("${info['mac']}", "${info['softwareVer']}", "${info['hardwareVer']}", "${packageInfo.version}", os_name, os_ver, "${locale?.languageCode}", phone_brand, phone_model).then((value) => _uploadLoged = true);
  }

  _testErrLog() async {
    Directory? dir = Platform.isAndroid ? await getExternalStorageDirectory() : await getTemporaryDirectory();
    if (dir != null) {
      var now = DateTime.now();
      File file = File("${dir.path}/shoe/err_${now.year}_${now.month}_${now.day}.csv");
      print("log file: $file $errQueue");
      if (!file.parent.existsSync()) {
        file.parent.createSync();
      }
      errQueue.forEach((element) {
        file.writeAsStringSync("$element\n", mode: FileMode.append, flush: true);
      });
    }
  }

  void _testElectricity(Map<String, dynamic> info) async {
    Directory? dir = Platform.isAndroid ? await getExternalStorageDirectory() : await getTemporaryDirectory();
    if (dir != null) {
      var now = DateTime.now();
      File file = File("${dir.path}/shoe/electricity_${now.year}_${now.month}_${now.day}.csv");
      print("log file: $file");
      if (!file.parent.existsSync()) {
        file.parent.createSync();
      }
      file.writeAsStringSync("${now.hour},${now.minute},${now.second},${info['0_electricity']},${info['1_electricity']},${info['0_adc']},${info['1_adc']}\n", mode: FileMode.append, flush: true);
    }
  }

  void _testStep(String line) async {
    Directory? dir = Platform.isAndroid ? await getExternalStorageDirectory() : await getTemporaryDirectory();
    if (dir != null) {
      var now = DateTime.now();
      File file = File("${dir.path}/shoe/step_${now.year}_${now.month}_${now.day}.csv");
      print("log file: $file");
      if (!file.parent.existsSync()) {
        file.parent.createSync();
      }
      file.writeAsStringSync("$line\n", mode: FileMode.append, flush: true);
    }
  }
}

class PartItem {
  int step;
  int distance;
  int absolute;
  int time;

  PartItem(this.step, this.absolute, this.distance, this.time);

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['step'] = this.step;
    data['absolute'] = this.absolute;
    data['distance'] = this.distance;
    data['time'] = this.time;
    return data;
  }
}

class PartInfo {
  int start;
  int serial = 0;
  int serialCount;
  List<PartItem> items = [];
  late DateTime now;
  late DateTime maxTime;
  late Map<int, List<int>> data;
  bool ready = false;

  PartInfo(this.start, this.serialCount) {
    now = DateTime.now();
    maxTime = DateTime(now.year, now.month, now.day, now.hour);
    data = {};
  }

  final int offset = 60 * 60 * 1000;

  prepare() async {
    print("bluetooth -- step prepare ... ");
    if (data.isEmpty) return;
    if (start == 0) return;

    var current = data[0] ?? [];
    if (current.isEmpty) return;
    int currentStep = current.first;
    print("bluetooth -- step current ... $currentStep");

    var db = StepDB();
    var history = await db.findHistory(start);
    print("bluetooth -- step history ... $start $history");

    int startStep = 0;

    var p = PartItem(0, currentStep, 0, start - offset);

    if (history.isNotEmpty == true) {
      startStep = history.first['st'];
      if (startStep > currentStep) {
        await db.deleteAll();
        print("bluetooth -- history ... clear");
        startStep = currentStep;
        await db.insert(p);
        print("bluetooth -- step add history ... ${p.toJson()}");
      }
    } else {
      startStep = currentStep;
      await db.insert(p);
      print("bluetooth -- step add history ... ${p.toJson()}");
    }

    data[data.length] = current;

    for (var i = 1; i < data.length; i++) {
      var list = data[i] ?? [];
      for (int e in list) {
        int time = start + items.length * offset;
        int step = max(0, e - startStep);
        print("bluetooth -- step add $time $e s:$startStep step:$step");
        items.add(PartItem(step, e, 0, min(time, maxTime.millisecondsSinceEpoch)));
        startStep = e;
      }
    }
  }
}