const gbk = require('./gbk.js');
const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : '0' + n
}


const hexStringToBuff = str => { //str='中国：WXHSH'
  //const buffer = new ArrayBuffer((sumStrLength(str)) * 4)
  const buffer = new ArrayBuffer((sumStrLength(str)) + 1);
  const dataView = new DataView(buffer)
  var data = str.toString();
  var p = 0; //ArrayBuffer 偏移量
  for (var i = 0; i < data.length; i++) {
    if (isCN(data[i])) { //是中文
      //调用GBK 转码
			// console.log(29,data[i])
      var t = gbk.encode(data[i]);
      for (var j = 0; j < 2; j++) {
        //var code = t[j * 2] + t[j * 2 + 1];
        var code = t[j * 3 + 1] + t[j * 3 + 2];
        var temp = parseInt(code, 16)
        //var temp = strToHexCharCode(code);
        dataView.setUint8(p++, temp)
      }
    } else {
      var temp = data.charCodeAt(i);
      dataView.setUint8(p++, temp)
    }
  }
  return buffer;
}

function toUnicode(s) {
  var str = "";
  for (var i = 0; i < s.length; i++) {
    str += "\\u" + s.charCodeAt(i).toString(16) + "\t";
  }
  return str;
}

function strToHexCharCode(str) {
  if (str === "")
    return "";
  var hexCharCode = [];
  hexCharCode.push("0x");
  for (var i = 0; i < str.length; i++) {
    hexCharCode.push((str.charCodeAt(i)).toString(16));
  }
  return hexCharCode.join("");
}

function sumStrLength(str) {
  var length = 0;
  var data = str.toString();
  for (var i = 0; i < data.length; i++) {
    if (isCN(data[i])) { //是中文
      length += 2;
    } else {
      length += 1;
    }
  }
  return length;
}

function isCN(str) {
	let characterA =/^[\u4e00-\u9fa5]+$/
	let characterB = /^[\uFF01]|[\uFF0C-\uFF0E]|[\uFF1A-\uFF1B]|[\uFF1F]|[\uFF08-\uFF09]|[\u3001-\u3002]|[\u3010-\u3011]|[\u201C-\u201D]|[\u2013-\u2014]|[\u2018-\u2019]|[\u2026]|[\u3008-\u300F]|[\u3014-\u3015]+$/
  if (characterA.test(str) || characterB.test(str)) {
    return true;
  } else {
    return false;
  }
}

//汉字转码
function hexStringToArrayBuffer(str) {
  const buffer = new ArrayBuffer((str.length / 2) + 1)
  const dataView = new DataView(buffer)
  for (var i = 0; i < str.length / 2; i++) {
    var temp = parseInt(str[i * 2] + str[i * 2 + 1], 16)
    dataView.setUint8(i, temp)
  }
  dataView.setUint8((str.length / 2), 0x0a)
  return buffer;
}

//返回八位数组
function subString(str) {
  var arr = [];
  if (str.length > 8) { //大于8
    for (var i = 0;
      (i * 8) < str.length; i++) {
      var temp = str.substring(i * 8, 8 * i + 8);
      arr.push(temp)
    }
    return arr;
  } else {
    return str
  }
}

//不带有汉字
function hexStringToArrayBufferstr(str) {
  let val = ""
  for (let i = 0; i < str.length; i++) {
    if (val === '') {
      val = str.charCodeAt(i).toString(16)
    } else {
      val += ',' + str.charCodeAt(i).toString(16)
    }
  }
  val += "," + "0x0a";
  console.log(val)
  // 将16进制转化为ArrayBuffer
  return new Uint8Array(val.match(/[\da-f]{2}/gi).map(function(h) {
    return parseInt(h, 16)
  })).buffer
}

//换行符号
function send0X0A() {
  const buffer = new ArrayBuffer(1)
  const dataView = new DataView(buffer)
  dataView.setUint8(0, 0x0a)
  return buffer;
}

function sendDirective(arr) {
  const buffer = new ArrayBuffer(arr.length)
  const dataView = new DataView(buffer)
  for (let i in arr) {
    dataView.setUint8(i, arr[i])
  }
  return buffer;
}

function replaceStr(str) {
  str = str.toString();
  // console.log(147, str)
  if (str) {
    let len = getBytesLength(str);
    let minLen = 4;
    if (len < minLen) {
      let nstr='';
      for (let i = 0; i < minLen-len; i++) {
        nstr = nstr + ' ';
      }
      str = nstr + str;
    } else {
      str = str;
    }
  } else {
    str = ''
  }
  console.log(163, str);
  return str
}

//计算打印的位置
function printTwoData(leftText, rightText) {
  let sb = '';
  let maxLen = 32;
  let leftTextLength = getBytesLength(leftText);
  let rightTextLength = getBytesLength(rightText);
  let spaceLen = maxLen - leftTextLength - rightTextLength;
  sb = sb + leftText;
  for (let i = 0; i < spaceLen; i++) {
    sb = sb + ' ';
  }
  sb = sb + rightText + '\n';
  return sb.toString();
}

function printThreeData(leftText, centerText, rightText) {
  let sb = '';
  let maxLen = 32;
  
  leftText = replaceStr(leftText);
  centerText = replaceStr(centerText);
  rightText = replaceStr(rightText);
  
  let leftTextLength = getBytesLength(leftText);
  let centerTextLength = getBytesLength(centerText);
  let rightTextLength = getBytesLength(rightText);
  let spaceLeft = maxLen/2 - leftTextLength - centerTextLength/2;
  let spaceRight = maxLen/2 - centerTextLength/2 - rightTextLength;
   
  console.log(168, leftTextLength, centerTextLength, rightTextLength, spaceLeft,spaceRight);
  sb = sb + leftText;
  for (let i = 0; i < spaceLeft; i++) {
    sb = sb + ' ';
  }
  sb = sb + centerText;
  for (let i = 0; i < spaceRight; i++) {
    sb = sb + ' ';
  }
  sb = sb + rightText + '\n';
  console.log('printThreeData', sb);
  return sb.toString();
}

function getBytesLength(val) {
  var str = new String(val);
  var bytesCount = 0;
  for (var i = 0, n = str.length; i < n; i++) {
    var c = str.charCodeAt(i);
    if ((c >= 0x0001 && c <= 0x007e) || (0xff60 <= c && c <= 0xff9f)) {
      bytesCount += 1;
    } else {
      bytesCount += 2;
    }
  }
  return bytesCount;
}

module.exports = {
  hexStringToArrayBuffer: hexStringToArrayBuffer,
  hexStringToBuff: hexStringToBuff,
  sendDirective: sendDirective,
  printTwoData: printTwoData,
  printThreeData: printThreeData
}