'use strict';
const Service = require('egg').Service;
const _ = require("lodash");
class DealSerialportService extends Service {

  //打开串口
  async openSerialport(SerialPortItem, port) {
    if (SerialPortItem.isOpen) {
      await this.closeSerialport(SerialPortItem, port)
    }
    let returnData = {
      haserror: true,
      msg: `${port}串口打开出错`,
    };
    await SerialPortItem.open(function (error) {
      if (error) {
        returnData.haserror = true
        returnData.msg = `${port}端口打开出错：${error}`
      } else {
        returnData.haserror = false
        returnData.msg = `${port}端口打开成功`
      }
      return returnData
    });
    return returnData
  }
  //关闭串口
  async closeSerialport(SerialPortItem, port) {
    if (SerialPortItem.isOpen) {
      await SerialPortItem.close()
    }
    let returnData = {
      haserror: false,
      msg: `${port}串口关闭成功`,
    };
    return returnData
  }
  //向串口发送指令
  async writeSerialport(SerialPortItem, params) {
    let { ctx } = this
    //每次发送数据停留50ms
    await ctx.service.utils.sleep(50);
    let returnData = {
      haserror: false,
      msg: `${params.ripCom}的指令(${JSON.stringify(params.sendRipId)})发送成功`,
    };
    if (SerialPortItem.isOpen) {
      await this.writeData(SerialPortItem, params)
    } else {
      await this.openSerialport(SerialPortItem, params.ripCom)
      await this.writeData(SerialPortItem, params)
    }
    return returnData
  }
  //写数据后读取
  async writeData(SerialPortItem, params) {
    let { ctx } = this
    let dealData1 = ""
    let dealData2 = ""
    if (typeof (params.sendRipId) === "string") {
      dealData1 = await ctx.service.utils.MODBUS_CRC(params.sendRipId, true, "hex");
    } else if (typeof (params.sendRipId) === "object") {
      dealData1 = await ctx.service.utils.MODBUS_CRC(params.sendRipId[0], true, "hex");
      // dealData2 = await ctx.service.utils.MODBUS_CRC(params.sendRipId[1], true, "hex");
    }
    await SerialPortItem.write(Buffer.from(dealData1)); // 发送字符串
    await ctx.service.utils.sleep(50);
    let readResult1 = await SerialPortItem.read(); // 发送字符串
    if (dealData1 && readResult1) {
      if (dealData1.toString("hex").substring(0, 4) === readResult1.toString("hex").substring(0, 4) && dealData1.toString("hex") !== readResult1.toString("hex")) {
        await ctx.service.home.sendData(params, readResult1, params.isDirct);
      }
    }
    if (dealData2) {
      await ctx.service.utils.sleep(50);
      await SerialPortItem.write(Buffer.from(dealData2)); // 发送字符串
      await ctx.service.utils.sleep(50);
      let readResult2 = await SerialPortItem.read(); // 发送字符串
      if (dealData2 && readResult2) {
        if (dealData2.toString("hex").substring(0, 4) === readResult2.toString("hex").substring(0, 4) && dealData2.toString("hex") !== readResult2.toString("hex")) {
          await ctx.service.home.sendData(params, readResult2, params.isDirct);
        }
      }
    }
  }
}

module.exports = DealSerialportService;