//= =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):==
export 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
  }
}

//= =加载引用CLodop的主JS,用双端口8000和18000(以防其中一个被占):==
export function loadCLodop () {
  // eslint-disable-next-line eqeqeq
  if (CLodopJsState == 'loading' || CLodopJsState == 'complete') return
  CLodopJsState = 'loading'
  var head = document.head || document.getElementsByTagName('head')[0] || document.documentElement
  var JS1 = document.createElement('script')
  var JS2 = document.createElement('script')
  JS1.src = 'http://localhost:8000/CLodopfuncs.js?priority=1'
  JS2.src = 'http://localhost:18000/CLodopfuncs.js'
  JS1.onload = JS2.onload = function () { CLodopJsState = 'complete' }
  JS1.onerror = JS2.onerror = function (evt) { CLodopJsState = 'complete' }
  head.insertBefore(JS1, head.firstChild)
  head.insertBefore(JS2, head.firstChild)
  CLodopIsLocal = !!((JS1.src + JS2.src).match(/\/\/localho|\/\/127.0.0./i))
}

if (needCLodop()) { loadCLodop() }// 加载

//= =获取LODOP对象主过程,判断是否安装、需否升级:==
export function getLodop (oOBJECT, oEMBED) {
  var strHtmInstall = "<br><font color='#2d8cf0'>打印控件未安装!点击这里<a href='install_lodop32.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>"
  var strHtmUpdate = "<br><font color='#2d8cf0'>打印控件需要升级!点击这里<a href='install_lodop32.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>"
  var strHtm64_Install = "<br><font color='#2d8cf0'>打印控件未安装!点击这里<a href='install_lodop64.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>"
  var strHtm64_Update = "<br><font color='#2d8cf0'>打印控件需要升级!点击这里<a href='install_lodop64.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>"
  var strHtmFireFox = "<br><br><font color='#2d8cf0'>（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><br><font color='#2d8cf0'>(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='#2d8cf0'>Web打印服务CLodop未安装启动，点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>下载执行安装</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='#2d8cf0'>Web打印服务CLodop需升级!点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>执行升级</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 = getCLodop()
      } catch (err) {}
      if (!LODOP && CLodopJsState !== 'complete') {
        // eslint-disable-next-line eqeqeq
        if (CLodopJsState == 'loading') alert('网页还没加载完毕，请稍等一下再操作.'); else alert('没有加载CLodop的主js，请先调用loadCLodop过程.')
        return
      }
      if (!LODOP) {
        lodopHTMLData = strCLodopInstall_1 + (CLodopIsLocal ? strCLodopInstall_2 : '') + strCLodopInstall_3
        flagLodop = !flagLodop
        return
      } else {
        if (CLODOP.CVERSION < '4.1.0.4') {
          lodopHTMLData = strCLodopUpdate
          flagLodop = !flagLodop
        }
        if (oEMBED && oEMBED.parentNode) { oEMBED.parentNode.removeChild(oEMBED) } // 清理旧版无效元素
        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) {
          lodopHTMLData = strHtmChrome
          flagLodop = !flagLodop
        }
        if (ua.indexOf('Firefox') >= 0) {
          lodopHTMLData = strHtmFireFox
          flagLodop = !flagLodop
        }
        lodopHTMLData = (is64IE ? strHtm64_Install : strHtmInstall)
        flagLodop = !flagLodop
        return LODOP
      }
    }
    if (LODOP.VERSION < '6.2.2.6') {
      if (!needCLodop()) {
        lodopHTMLData = (is64IE ? strHtm64_Update : strHtmUpdate)
        flagLodop = !flagLodop
      }
    }
    // ===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)
  }
}
