const Manager = require('./manager');

class BleUtil {
  static _instance = new BleUtil();

  static getInstance() {
    return BleUtil._instance;
  }

  constructor() {
    var that = this;
    that.manager = new Manager();
  }

  ///获取比较的数据
  getCompareList() {
    var that = this;
    return that.manager.getCompareList();
  }

  getDissmissDevice() {
    var that = this;
    return that.manager.getDissmissDevice();
  }

  getCallBackConnect() {
    var that = this;
    return that.manager.getCallBackConnect();
  }

  ///初始化蓝牙适配器
  initBluetoothAdapter() {
    var that = this;
    that.manager.initBlueAdapter();
  }

  ///获取蓝牙设备 connect:true，去连接，false,去对比
  listenBlueDevices() {
    var that = this;
    that.manager.listenBlueDevices();
  }

  ///搜索蓝牙设备
  startScan(connectWillDevice, boolean, callBackConnect) {
    var that = this;
    that.manager.startScan(
      connectWillDevice,
      boolean,
      callBackConnect,
    );
  }

  ///停止搜索蓝牙设备
  async stopScan() {
    var that = this;
    await that.manager.stopScan();
  }

  ///开始连接设备
  async startConnect(device, onChanged) {
    var that = this;
    await that.stopScan();
    // await that.disconnect(device);

    var res = await that.manager.startConnect(device);
    if (!res) {
      onChanged(false, device);
      return;
    }

    const strings = require('./../../utils/strings');
    var services = await that.manager.getNotifyServices(device);
    if (strings.isEmpty(services)) {
      console.log("gadsfasdfadfaf===bbb==");
      onChanged(false);
      return;
    }

    that.manager.getCharacteristics(device, services, 0, false, false, false,
      async function (notifyServiceId, notifyCharaterId) {
          var isTrue = that.manager.monitorCharacteristicValueChange(device, notifyServiceId, notifyCharaterId);
          if (!isTrue) {
            onChanged(false);
            return;
          }

          console.log("gadsfasdfadfaf===ddd==" + JSON.stringify(isTrue));
          ///解决连接之后会有一段时间显示离线，先添加进去就不会了
          // var has = false;
          // var compareList = that.manager.getCompareList();
          // for (var j = 0; j < compareList.length; j++) {
          //   if (compareList[j].deviceId == device.deviceId) {
          //     has = true;
          //     break;
          //   }
          // }
          // if (!has) {
          //   compareList.unshift(device);
          //   that.manager.setCompareList(compareList);
          // }
          onChanged(true);

          const hex_util = require('./../../utils/hex_util');
          const bt_parse = require('./../../devices/bluetooth/bt_parse');
          that.manager.onBLECharacteristicValueChange(function (value) {
            var receiveText = hex_util.buf2string(value);
            console.log("gadsfasdfadfaf===eeee==" + receiveText);
            console.log('接收到数据文字：' + receiveText);

            var buffer = new DataView(value);
            var result = []
            for (let i = 0; i < buffer.byteLength; i++) {
              result.push(buffer.getUint8(i))
            }
            bt_parse.parseTLV(result);
          });
        },
        function () {
          onChanged(false);
          return;
        });
  }

  ///发送数据
  async sendData(device, wifiName, pwd) {
    var that = this;
    console.log("gadsfasdfadfaf===222==" + wifiName + "===" + pwd);
    var text = that.sendWiFiInfo(wifiName, pwd);
    console.log("gadsfasdfadfaf===444==" + text);
    var isTrue = await that.manager.sendData(device, text);
    console.log("gadsfasdfadfaf===333==" + isTrue);
    ///发送数据成功
    if (isTrue) {

    }
  }

  sendWiFiInfo(wifiName, pwd) {
    const hex_util = require('../hex_util');
    let result = [];

    // 字母*6 +
    let wifiList = hex_util.string2ListInt(wifiName);

    // 数字*3 +
    let pwdList = hex_util.string2ListInt(pwd);

    // 16进制
    result.push(0x22);
    result.push(parseInt(hex_util.int2Hex(wifiList.length + pwdList.length + 6), 16));

    // 账号
    result.push(0x33);
    result.push(parseInt(hex_util.int2Hex(wifiList.length), 16));

    let p = result[3] + 4;
    let j = 0;
    for (let i = 4; i < p; i++) {
      result.splice(i, 0, wifiList[j++]);
    }

    // 密码
    result.splice(p, 0, 0x44);
    result.splice(++p, 0, parseInt(hex_util.int2Hex(pwdList.length), 16));
    p++;
    j = 0;
    for (let i = p; i < p + pwdList.length; i++) {
      result.splice(i, 0, pwdList[j++]);
    }
    ///[34, 22, 51, 5, 109, 117, 122, 101, 110, 68, 11, 109, 117, 122, 101, 110, 111, 102, 102, 105, 99, 101]
    console.log("发送wifi账号密码：", result.toString());
    return result.toString();
  }

  ///断开设备连接
  async disconnect(device) {
    var that = this;
    await that.manager.disconnect(device);
  }
}
module.exports = {
  BleUtil
}