if (typeof Object.assign != 'function') {
    // Must be writable: true, enumerable: false, configurable: true
    Object.defineProperty(Object, "assign", {
        value: function assign(target, varArgs) { // .length of function is 2
            'use strict';
            if (target == null) { // TypeError if undefined or null
            throw new TypeError('Cannot convert undefined or null to object');
            }
    
            var to = Object(target);
    
            for (var index = 1; index < arguments.length; index++) {
                var nextSource = arguments[index];
        
                if (nextSource != null) { // Skip over if undefined or null
                    for (var nextKey in nextSource) {
                    // Avoid bugs when hasOwnProperty is shadowed
                    if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                        to[nextKey] = nextSource[nextKey];
                    }
                    }
                }
            }
            return to;
        },
        writable: true,
        configurable: true
    });
}

var BASE64_MAPPING = [
    'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
    'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
    'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
    'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
    'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
    'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
    'w', 'x', 'y', 'z', '0', '1', '2', '3',
    '4', '5', '6', '7', '8', '9', '+', '/'
];
  
/**
 * ascii convert to binary
 */
var _toBinary = function(ascii) {
    var binary = new Array();
    while (ascii > 0) {
        var b = ascii % 2;
        ascii = Math.floor(ascii / 2);
        binary.push(b);
    }
    /*
    var len = binary.length;
    if(6-len > 0){
      for(var i = 6-len ; i > 0 ; --i){
        binary.push(0);
      }
    }*/
    binary.reverse();
    return binary;
};
  
/**
 * binary convert to decimal
 */
var _toDecimal = function(binary) {
    var dec = 0;
    var p = 0;
    for (var i = binary.length - 1; i >= 0; --i) {
        var b = binary[i];
        if (b == 1) {
            dec += Math.pow(2, p);
        }
        ++p;
    }
    return dec;
};
  
/**
 * unicode convert to utf-8
 */
var _toUTF8Binary = function(c, binaryArray) {
    var mustLen = (8 - (c + 1)) + ((c - 1) * 6);
    var fatLen = binaryArray.length;
    var diff = mustLen - fatLen;
    while (--diff >= 0) {
        binaryArray.unshift(0);
    }
    var binary = [];
    var _c = c;
    while (--_c >= 0) {
        binary.push(1);
    }
    binary.push(0);
    var i = 0,
        len = 8 - (c + 1);
    for (; i < len; ++i) {
        binary.push(binaryArray[i]);
    }
  
    for (var j = 0; j < c - 1; ++j) {
        binary.push(1);
        binary.push(0);
        var sum = 6;
        while (--sum >= 0) {
            binary.push(binaryArray[i++]);
        }
    }
    return binary;
};

/**
 * BASE64 Encode
 */
var encoder = function(str) {
    var base64_Index = [];
    var binaryArray = [];
    for (var i = 0, len = str.length; i < len; ++i) {
        var unicode = str.charCodeAt(i);
        var _tmpBinary = _toBinary(unicode);
        if (unicode < 0x80) {
            var _tmpdiff = 8 - _tmpBinary.length;
            while (--_tmpdiff >= 0) {
            _tmpBinary.unshift(0);
            }
            binaryArray = binaryArray.concat(_tmpBinary);
        } else if (unicode >= 0x80 && unicode <= 0x7FF) {
            binaryArray = binaryArray.concat(_toUTF8Binary(2, _tmpBinary));
        } else if (unicode >= 0x800 && unicode <= 0xFFFF) { //UTF-8 3byte
            binaryArray = binaryArray.concat(_toUTF8Binary(3, _tmpBinary));
        } else if (unicode >= 0x10000 && unicode <= 0x1FFFFF) { //UTF-8 4byte
            binaryArray = binaryArray.concat(_toUTF8Binary(4, _tmpBinary));
        } else if (unicode >= 0x200000 && unicode <= 0x3FFFFFF) { //UTF-8 5byte
            binaryArray = binaryArray.concat(_toUTF8Binary(5, _tmpBinary));
        } else if (unicode >= 4000000 && unicode <= 0x7FFFFFFF) { //UTF-8 6byte
            binaryArray = binaryArray.concat(_toUTF8Binary(6, _tmpBinary));
        }
    }
  
    var extra_Zero_Count = 0;
    for (var i = 0, len = binaryArray.length; i < len; i += 6) {
        var diff = (i + 6) - len;
        if (diff == 2) {
            extra_Zero_Count = 2;
        } else if (diff == 4) {
            extra_Zero_Count = 4;
        }
        var _tmpExtra_Zero_Count = extra_Zero_Count;
        while (--_tmpExtra_Zero_Count >= 0) {
            binaryArray.push(0);
        }
        base64_Index.push(_toDecimal(binaryArray.slice(i, i + 6)));
    }
  
    var base64 = '';
    for (var i = 0, len = base64_Index.length; i < len; ++i) {
        base64 += BASE64_MAPPING[base64_Index[i]];
    }
  
    for (var i = 0, len = extra_Zero_Count / 2; i < len; ++i) {
        base64 += '=';
    }
    return base64;
};
  
function urlsafe_b64encode(input) {
    return encoder(input).replace(/\+/g, '-').replace(/\//g, '_');
}

function browser() {
    var UA = window.navigator.userAgent;

    var isAndroid = /Android/i.test(UA);
    var isiOS = /iPhone|iPad|iPod/i.test(UA);
    var isMeetyouWebview = /MeetYouClient/i.test(UA);
    var isWechat = /MicroMessenger\/(\d+)\.(\d+)\.?(\d+)?/i.test(UA);
    var isQQ =  isiOS ? /QQ|Qzone/i.test(UA) && !/MQQBrowser/i.test(UA) : /MQQBrowser/i.test(UA) && /QQ/i.test(UA.split('MQQBrowser'));
    var isZhihu = /zhihu/i.test(UA);
    var isWeibo = /weibo/i.test(UA);
    var isAliApp = /AliApp/i.test(UA);

    var isWebview = isQQ || isZhihu || isWeibo || isAliApp;
    var isOtherWebview = isZhihu || isWeibo || isAliApp;

    var iOSMatch = UA.match(/OS (\d+)_(\d+)_?(\d+)?/i);
    var iOSVersion = iOSMatch ? parseInt(iOSMatch[1], 10) : 0;

    return {
        isiOS: isiOS,
        iOSVersion: iOSVersion,
        isAndroid: isAndroid,
        isMeetyouWebview: isMeetyouWebview,
        isWechat: isWechat,
        isQQ: isQQ,
        isZhihu: isZhihu,
        isWeibo: isWeibo,
        isWebview: isWebview,
        isOtherWebview: isOtherWebview
    };
};

var template = '<div class="mui-share-guide">' +
    '<div class="share-guide">' +
        '<div class="share-img-wrap"><img src="./images/guide.png" alt="" class="icon"></div>' +
        '<div class="share-content">' +
            '<span class="item">1. 点击右上角...</span>' +
            '<span class="item">2. 选择用浏览器/Safari打开</span>' +
        '</div>' +
    '</div>' +
'</div>';

var shareTip = {
    show: function () {
        if(!this.hasShareGuide()){
            document.body.insertAdjacentHTML('beforeend', template);
        }
        this.addEvent();

        this.doShow();
    },
    doShow: function(){
        var wrapperEl = document.querySelector('.mui-share-guide');
        wrapperEl.style.display = 'block';
    },
    hide: function(){
        var wrapperEl = document.querySelector('.mui-share-guide');
        wrapperEl.style.display = 'none';
    },
    hasShareGuide: function () {
        var el = document.querySelector('.mui-share-guide');
        return el ? true : false;
    },
    addEvent: function () {
        var wrapperEl = document.querySelector('.mui-share-guide');
        wrapperEl.addEventListener('click', function (e) {
            shareTip.hide();
            e.stopPropagation();
        })
    }
};

var Awaken = function (opt) {
    this.defaultOpts = {
        selectorEvent: 'click',
        customTrigger: false,
        download: '',
        link: 'https://bbj.meiyou.com/docouments/download.html',
        path: 'web'
    };

    this.props = {
        itunesStoreDownloadURL: 'https://itunes.apple.com/cn/app/id1459838978?mt=8',
        androidApkDownloadURL: 'https://estatic.seeyouyima.com/bbj/Baby.apk',
        tencentMarketURL: 'https://a.app.qq.com/o/simple.jsp?pkgname=com.meiyou.seeyoubaby',
        scheme: 'meetyou.linggan.seeyoubaby://',
        schemeInApp: 'meiyou://',
        universalLinkBase: 'meetyou.linggan.seeyoubaby://'
    };
    var newConfig = Object.assign({}, this.defaultOpts, opt);

    this.opts = newConfig;

    this.init();
}

Awaken.prototype.init = function () {
    var _this = this;
    var triggerElement = document.querySelector(this.opts.selector);

    if (triggerElement && !this.opts.customTrigger) {
        triggerElement.addEventListener(_this.opts.selectorEvent, function () {

            if(_this.opts.beforeOpenHook && isFunction(_this.opts.beforeOpenHook)){
                _this.opts.beforeOpenHook();
            }

            _this.handleOpen();
        });
    }
}

Awaken.prototype.gotoDownloadLink = function (duration){
    var isBlur = false;
    var target = this.props.tencentMarketURL;

    if (browser().isiOS) {
        target = this.props.itunesStoreDownloadURL;
    }
    if (this.opts.download) {
        target = this.opts.download;
    }

    window.onblur = function () {
        isBlur = true;
    };

    var hiddenProperty = 'hidden' in document ? 'hidden' : 'webkitHidden' in document ? 'webkitHidden' : '';
    var visibilityChangeEvent = hiddenProperty.replace(/hidden/i, 'visibilitychange');

    document.addEventListener(visibilityChangeEvent, function () {
        if(document[hiddenProperty]){
            isBlur = true;
        }
    });

    setTimeout(function () {
        if(!isBlur){
            window.location.href = target;
        }
    }, duration)
}

Awaken.prototype.createSchemeLink = function (link){
    var path = this.opts.path;
    var params = this.opts.params;
    var scheme = this.props.scheme;
    var schemeLink = scheme + path;

    if (link) {
        schemeLink += '?params=' + urlsafe_b64encode(JSON.stringify({url: link}));
    } else if (params) {
        schemeLink += '?params=' + urlsafe_b64encode(JSON.stringify(params));
    }

    return schemeLink;
}

Awaken.prototype.tryOpenByScheme = function (link){
    var timeout = 1000;
    var called = false;
    var callTimeout;
    var iframe = document.createElement('iframe');
    iframe.style.display = 'none';
    iframe.onload = iframe.onerror = callback;
    iframe.src = link;

    callTimeout = window.setTimeout(callback, timeout);
    document.getElementsByTagName('body')[0].appendChild(iframe);
    function callback() {
        if (called) {
            return;
        }
        iframe.onload = iframe.onerror = undefined;
        iframe.parentNode.removeChild(iframe);
        if (callTimeout) {
            window.clearTimeout(callTimeout);
            callTimeout = null;
        }

        called = true;
    }
}

Awaken.prototype.isNeedOpenInBrowser = function (){
    return browser().isiOS && browser().iOSVersion < 9
        || browser().isOtherWebview && browser().isiOS
        || browser().isWeibo && browser().isAndroid
}

Awaken.prototype.handleOpen = function (){
    if (browser().isMeetyouWebview && browser().isAndroid) {
        window.location.href = this.props.androidApkDownloadURL;
        return;
    }

    if (this.isNeedOpenInBrowser()) {
        shareTip.show();
        return;
    }

    var link = this.opts.link
    var weblink = this.opts.weblink;
    var download = this.opts.download;

    var schemeLink = this.createSchemeLink(link);

    if (browser().iOSVersion >= 9 && browser().isOtherWebview) {
        var universalLink = this.props.universalLinkBase + '?link=' + encodeURIComponent(link) + (weblink ? '&weblink=' + encodeURIComponent(weblink) : '');

        if (download) {
            universalLink += '&download=' + encodeURIComponent(download);
        }

        window.location.href = universalLink;
    } else if (browser().isAndroid && browser().isWechat) {
        window.location.href = this.props.tencentMarketURL + '&android_schema=' + encodeURIComponent(schemeLink);
    } else {
        var duration = 1500;
        if (schemeLink) {
            if (browser().isiOS) {
                duration = 200;
            } else {
                this.tryOpenByScheme(schemeLink);
            }
        }

        this.gotoDownloadLink(duration);
    }
}

function isFunction(functionToCheck) {
    return functionToCheck && {}.toString.call(functionToCheck) === '[object Function]';
}

window.onload = function () {
    new Awaken({selector: '.awaken-button'});

    var btn = document.querySelector('.awaken-button');
    btn.addEventListener('click', function () {
        if (window._czc) {
            _czc.push(['_trackEvent', '下载落地页', '立即下载']);
        }
    })
}