function judgeAgent() {
    let userAgent = navigator.userAgent // 取得浏览器的userAgent字符串
    console.log('userAgent------------>', userAgent)
    let isOpera = userAgent.indexOf('Opera') > -1
        //判断是否Opera浏览器
    if (isOpera) {
        return 'Opera'
    }
    //判断是否Firefox浏览器
    if (userAgent.indexOf('Firefox') > -1) {
        return 'FF'
    }
    //判断是否chorme浏览器
    if (userAgent.indexOf('Chrome') > -1) {
        return 'Chrome'
    }
    //判断是否Safari浏览器
    if (userAgent.indexOf('Safari') > -1) {
        return 'Safari'
    }
    //判断是否IE浏览器
    if (
        userAgent.indexOf('compatible') > -1 &&
        userAgent.indexOf('MSIE') > -1 &&
        !isOpera
    ) {
        return 'IE'
    }
    //判断是否Edge浏览器
    if (userAgent.indexOf('Trident') > -1) {
        return 'Edge'
    }
}

function downloadFile(name, url) {
    const alink = document.createElement('a')
    alink.download = name // 文件名,大部分浏览器兼容,IE10及以下不兼容
    alink.href = url // 创建 url地址
    alink.click() // 自动点击
}

function getPCNum() {
    const agent = navigator.userAgent.toLowerCase()
    if (agent.indexOf('win32') >= 0 || agent.indexOf('wow32') >= 0) {
        return 32
    }
    if (agent.indexOf('win64') >= 0 || agent.indexOf('wow64') >= 0) {
        return 64
    }
}

console.log('------判断浏览器------>', judgeAgent())

var ModelBox = (function() {
    var ModelBox = function(option) {
        this.option = option || {}
        console.log(999, 'init')
        this.init()
    }
    ModelBox.prototype = {
        isShow: false,
        init: function() {
            var _this = this
            _this.isShow = this.option.isShow
            var html =
                '<div class="model-container">' +
                '<h1 class="model-title">title</h1>' +
                '<div class="model-content"></div>' +
                '<div class="controls">' +
                '<a class="confirm">下载</a>' +
                '<a class="cancel">取消</a>' +
                '</div>' +
                '</div>'
            var ModelBoxCon = document.createElement('div')
            ModelBoxCon.setAttribute('class', 'mask-layer')
            ModelBoxCon.innerHTML = html
            ModelBoxCon.querySelector('.model-title').innerHTML =
                _this.option.title
            ModelBoxCon.querySelector('.model-content').innerHTML =
                _this.option.content
            document.getElementsByTagName('html')[0].appendChild(ModelBoxCon)
            if (!_this.isShow) {
                ModelBoxCon.style.display = 'none'
            }
            ModelBoxCon.querySelector('.cancel').onclick =
                ModelBoxCon.querySelector('.confirm').onclick =
                _this.eventsFn.bind('', this, ModelBoxCon)
        },
        show: function() {
            document.querySelector('.mask-layer').style.display = 'block'
            this.isShow = true
        },
        hide: function() {
            document.querySelector('.mask-layer').style.display = 'none'
            this.isShow = false
        },
        eventsFn: function(e, doc, target) {
            var _thisEvent = target.target
            if (_thisEvent.classList.contains('confirm')) {
                e.option.confirmCallBack()
            }
            doc.style.display = 'none'
            e.isShow = false
            return false
        },
    } || {}
    return ModelBox
})()

var opt = new ModelBox({
    title: '当前系统不支持IE内核，建议使用Chrome浏览器或360浏览器极速模式',
    content: '',
    isShow: false,
    confirmCallBack: function() {
        // 获取当前系统的方法
        const agent = getPCNum()
        console.log('agent------------>', agent)
        if (agent == 64) {
            // 64位操作系统
            downloadFile(
                'ChromeStandaloneSetup64.exe',
                '/static/download/ChromeStandaloneSetup64.exe'
            )
        } else {
            // 32位操作系统
            downloadFile(
                'ChromeStandalonesetup32.exe',
                '/static/download/standalonesetup32.exe'
            )
        }
    },
})

// 提示下载谷歌
if (judgeAgent() !== 'Chrome') {
    //alert('哈哈哈不支持')
    opt.show()
}