/* eslint-disable no-loop-func */
import Base64 from 'crypto-js/enc-base64';
import Utf8 from 'crypto-js/enc-utf8';
import sha256 from 'crypto-js/sha256';

var port = '';
var devInfoUrl = '';
var devcap = '';
var deviceInfoXml = '';

export function discoverDevice() {
  var scan_port = 11100;
  var scan_port_start = 11100;
  var scan_port_end = 11120;
  // Note check if the device is still connected to earlier discovered port.
  /*var discoveredPort = window.localStorage.getItem('rd_device_port');
  if(discoveredPort){
    scan_port_start = discoveredPort;
    scan_port_end = discoveredPort;
  }*/

  for (scan_port = scan_port_start; scan_port <= scan_port_end; scan_port++) {
    getJSON_rdser(scan_port, function (err, data, prt) {
      if (err !== null && err !== 0 && err !== 12029) {
        alert('Something went wrong: ' + err);
      } else {
        if (
          String(data) !== '' &&
          !String(data).includes('NOTREADY') &&
          String(data).includes('READY')
        ) {
          var parser = new DOMParser();
          var xmlDoc = parser.parseFromString(String(data), 'text/xml');
          var cells = xmlDoc.getElementsByTagName('Interface');
          for (var i = 0; i < cells.length; i++) {
            var id = cells[i].getAttribute('id');
            if (id === 'CAPTURE') devcap = cells[i].getAttribute('path');
            else if (id === 'DEVICEINFO') devInfoUrl = cells[i].getAttribute('path');
          }
          port = prt;
          window.localStorage.setItem('rd_device_port', port);
          window.localStorage.setItem('rd_device_url', devInfoUrl);
          getJSON_info();
        }
      }
    });
  }

  function getJSON_rdser(prt, callback) {
    var url = 'https://localhost:' + prt;
    var xhr;
    var ua = window.navigator.userAgent;
    var msie = ua.indexOf('MSIE ');

    if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\\:11\./)) {
      // IE browser
      xhr = new window.ActiveXObject('Microsoft.XMLHTTP'); // check
    } else {
      // other browser
      xhr = new XMLHttpRequest();
    }
    xhr.open('RDSERVICE', url, true);
    xhr.onreadystatechange = function () {
      if (xhr.readyState === 4) {
        var status = xhr.status;
        if (status === 200) {
          callback(null, xhr.responseText, prt);
        }
      }
    };

    xhr.send();
  }

  var getJSON_info = function () {
    var xhr;
    var ua = window.navigator.userAgent;
    var msie = ua.indexOf('MSIE ');
    var devicePort = window.localStorage.getItem('rd_device_port');
    var deviceUrl = window.localStorage.getItem('rd_device_url');
    var url = 'https://localhost:' + devicePort + deviceUrl;
    if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv\\:11\./)) {
      // IE browser
      xhr = new window.ActiveXObject('Microsoft.XMLHTTP');
    } else {
      // other browser
      xhr = new XMLHttpRequest();
    }
    xhr.open('DEVICEINFO', url, true);
    xhr.onreadystatechange = function () {
      if (xhr.readyState === 4) {
        var status = xhr.status;
        if (status === 200) {
    
          deviceInfoXml = xhr.response;
        } else {
          // msgElement.setAttribute('color', 'error');
          // msgElement.value.innerHTML =
          //   'Error while connecting to RD device. Please ensure that device is connected.';
          // document.getElementById('discoverDevice').style.display = 'block';
        }
      }
    };

    xhr.send();
  };
  return deviceInfoXml;
}

export let getJSONCapture = function (dev) {
  var deviceType = 'F';
  var devicePort = window.localStorage.getItem('rd_device_port');

  dev = deviceInfoXml;
  if (
    dev.includes('EPI1000') ||
    dev.includes('IRITECH') ||
    dev.includes('MIS100V2') ||
    dev.includes('MFS100')
  ) {
    deviceType = 'I';
  } else {
    deviceType = 'F';
  }
  if (dev.includes('MFS100')) {
    deviceType = 'F';
  }

  var ra = deviceType;
  var rc = 'Y';
  var lr = 'Y';
  var de = 'N';
  var pfr = 'N';
  var text = '2.5' + ra + rc + lr + de + pfr;
  var wadh = Base64.stringify(sha256(text)); //Convert to SHA-256; and then to base64

  var url = 'https://localhost:' + devicePort + devcap;
//very important variable 
  var InputXml =
    '<PidOptions ver="1.0">' +
    '<Opts env="P" fCount="1" fType="2" format="0" pidVer="2.0"  wadh="' +
    wadh +
    '" posh="UNKNOWN" timeout="10000"/>' +
    '</PidOptions>';

  var xhr;
  var ua = window.navigator.userAgent;
  var msie = ua.indexOf('MSIE ');

  if (msie > 0 || !!navigator.userAgent.match(/Trident.*rv:11\./)) {
    // If Internet Explorer, return version number
    // IE browser
    xhr = new window.ActiveXObject('Microsoft.XMLHTTP');
  } else {
    // other browser
    xhr = new XMLHttpRequest();
  }

  xhr.open('CAPTURE', url, false);
  xhr.send(InputXml);
  if (xhr.status === 200) {
    return Base64.stringify(Utf8.parse(xhr.responseText));
  } else {
    return 'error';
  }
};