import { MessageBox } from 'element-ui'
//==本JS是加载Lodop插件及CLodop服务的综合示例，可直接使用，建议看懂后融进自己页面程序==
var CreatedOKLodopObject, CLodopIsLocal, CLodopJsState

//==判断是否需要CLodop(那些不支持插件的浏览器):==
function needCLodop() {
  try {
    var ua = navigator.userAgent
    if (ua.match(/Windows\sPhone/i)) {
      return true
    }
    if (ua.match(/iPhone|iPod|iPad/i)) {
      return true
    }
    if (ua.match(/Android/i)) {
      return true
    }
    if (ua.match(/Edge\D?\d+/i)) {
      return true
    }

    var verTrident = ua.match(/Trident\D?\d+/i)
    var verIE = ua.match(/MSIE\D?\d+/i)
    var verOPR = ua.match(/OPR\D?\d+/i)
    var verFF = ua.match(/Firefox\D?\d+/i)
    var x64 = ua.match(/x64/i)
    if ((!verTrident) && (!verIE) && (x64)) {
      return true
    } else if (verFF) {
      verFF = verFF[0].match(/\d+/)
      if ((verFF[0] >= 41) || (x64)) {
        return true
      }
    } else if (verOPR) {
      verOPR = verOPR[0].match(/\d+/)
      if (verOPR[0] >= 32) {
        return true
      }
    } else if ((!verTrident) && (!verIE)) {
      var verChrome = ua.match(/Chrome\D?\d+/i)
      if (verChrome) {
        verChrome = verChrome[0].match(/\d+/)
        if (verChrome[0] >= 41) {
          return true
        }
      }
    }
    return false
  } catch (err) {
    return true
  }
}

//==引用CLodop的主JS,用双端口8000和18000(以防其中一个被占):==
if (needCLodop()) {
  var head = document.head || document.getElementsByTagName('head')[0] || document.documentElement

  var JS1 = document.createElement('script')
  JS1.src = 'http://localhost:8000/CLodopfuncs.js?priority=1'
  head.insertBefore(JS1, head.firstChild)

  var JS2 = document.createElement('script')
  JS2.src = 'http://localhost:18000/CLodopfuncs.js?priority=0'
  head.insertBefore(JS2, head.firstChild)

  CLodopIsLocal = !!((JS1.src + JS2.src).match(/\/\/localho|\/\/127.0.0./i))

  if (JS1.attachEvent) {
    CLodopJsState = 'loading'
    var onChange = function() {
      if (window.event.srcElement.readyState == 'loaded') {
        CLodopJsState = 'complete'
      }
    }
    JS1.attachEvent('onreadystatechange', onChange)
    JS2.attachEvent('onreadystatechange', onChange)
  }
}
// /
//==获取LODOP对象主过程,判断是否安装、需否升级:==
function getLodop(oOBJECT, oEMBED) {
  let exeUrl = 'http://www.lodop.net/download.html'
  var strHtmInstall = '<br><font color=\'#FF00FF\'>打印控件未安装!点击这里<a href=' + exeUrl + ' target=\'_blank\'>下载</a>,安装后请刷新页面或重新进入。</font>'
  var strHtmUpdate = '<br><font color=\'#FF00FF\'>打印控件需要升级!点击这里<a href=' + exeUrl + ' target=\'_blank\'>下载</a>,升级后请重新进入。</font>'
  var strHtm64_Install = '<br><font color=\'#FF00FF\'>打印控件未安装!点击这里<a href=' + exeUrl + ' target=\'_blank\'>下载</a>,安装后请刷新页面或重新进入。</font>'
  var strHtm64_Update = '<br><font color=\'#FF00FF\'>打印控件需要升级!点击这里<a href=' + exeUrl + ' target=\'_blank\'>下载</a>,升级后请重新进入。</font>'
  var strHtmFireFox = '<br><font color=\'#FF00FF\'>（注意：如曾安装过Lodop旧版附件npActiveXPLugin,请在【工具】->【附加组件】->【扩展】中先卸它）</font>'
  var strHtmChrome = '<br><font color=\'#FF00FF\'>(如果此前正常，仅因浏览器升级或重安装而出问题，需重新执行以上安装）</font>'
  var strCLodopInstall_1 = '<br><font color=\'#FF00FF\'>Web打印服务CLodop未安装启动，点击这里<a href=' + exeUrl + ' target=\'_blank\'>下载</a>,'
  var strCLodopInstall_2 = '<br>（若此前已安装过，可<a href=\'CLodop.protocol:setup\' target=\'_self\'>点这里直接再次启动</a>）'
  var strCLodopInstall_3 = '，成功后请刷新本页面。</font>'
  var strCLodopUpdate = '<br><font color=\'#FF00FF\'>Web打印服务CLodop需升级!点击这里<a href=' + exeUrl + ' target=\'_blank\'>下载</a>,,升级后请刷新页面。</font>'
  var LODOP
  try {
    var ua = navigator.userAgent
    var isIE = !!(ua.match(/MSIE/i)) || !!(ua.match(/Trident/i))
    if (needCLodop()) {
      try {
        LODOP = window.getCLodop()
      } catch (err) {
        ''
      }
      if (!LODOP && (document.readyState !== 'complete' || (isIE && CLodopJsState == 'loading'))) {
        alert('网页还没下载完毕，请稍等一下再操作.')
        return
      }
      if (!LODOP) {
        MessageBox.alert(strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : '') + strCLodopInstall_3, '提示', {
          dangerouslyUseHTMLString: true
        })
        //document.body.innerHTML = strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : '') + strCLodopInstall_3 + document.body.innerHTML
        return
      } else {
        if (window.CLODOP.CVERSION < '3.0.9.3') {

          MessageBox.alert(strCLodopUpdate, '提示', { dangerouslyUseHTMLString: true })
          //document.body.innerHTML = strCLodopUpdate + document.body.innerHTML
        }
        if (oEMBED && oEMBED.parentNode) {
          oEMBED.parentNode.removeChild(oEMBED)
        }
        if (oOBJECT && oOBJECT.parentNode) {
          oOBJECT.parentNode.removeChild(oOBJECT)
        }
      }
    } else {
      var is64IE = isIE && !!(ua.match(/x64/i))
      //==如果页面有Lodop就直接使用,否则新建:==
      if (oOBJECT || oEMBED) {
        if (isIE) {
          LODOP = oOBJECT
        } else {
          LODOP = oEMBED
        }
      } else if (!CreatedOKLodopObject) {
        LODOP = document.createElement('object')
        LODOP.setAttribute('width', 0)
        LODOP.setAttribute('height', 0)
        LODOP.setAttribute('style', 'position:absolute;left:0px;top:-100px;width:0px;height:0px;')
        if (isIE) {
          LODOP.setAttribute('classid', 'clsid:2105C259-1E0C-4534-8141-A753534CB4CA')
        } else {
          LODOP.setAttribute('type', 'application/x-print-lodop')
        }
        document.documentElement.appendChild(LODOP)
        CreatedOKLodopObject = LODOP
      } else {
        LODOP = CreatedOKLodopObject
      }
      //==Lodop插件未安装时提示下载地址:==
      if ((!LODOP) || (!LODOP.VERSION)) {
        if (ua.indexOf('Chrome') >= 0) {
          MessageBox.alert(strHtmChrome, '提示', { dangerouslyUseHTMLString: true })
        }
        //document.body.innerHTML = strHtmChrome + document.body.innerHTML
        if (ua.indexOf('Firefox') >= 0) {
          MessageBox.alert((is64IE ? strHtm64_Install : strHtmInstall) + strHtmFireFox, '提示', { dangerouslyUseHTMLString: true })
        }
        // 	document.body.innerHTML = strHtmFireFox + document.body.innerHTML
        // document.body.innerHTML = (is64IE ? strHtm64_Install : strHtmInstall) + document.body.innerHTML
        return LODOP
      }
    }
    if (LODOP.VERSION < '6.2.2.6') {
      if (!needCLodop()) {
        MessageBox.alert((is64IE ? strHtm64_Update : strHtmUpdate), '提示', { dangerouslyUseHTMLString: true })
      }
      //document.body.innerHTML = (is64IE ? strHtm64_Update : strHtmUpdate) + document.body.innerHTML
    }
    //===如下空白位置适合调用统一功能(如注册语句、语言选择等):==

    //=======================================================
    return LODOP
  } catch (err) {
    alert('getLodop出错:' + err)
  }
}

export default getLodop
