(function () {
    'use strict';

    var JEFCOUNTS_CONFIG = {
        endpoint: '//tongji.yes110.cn/api/track.php', 
        siteKey: 'a3861a120bb8e06e',                       
        delay: 800,                                   
        debug: false                                 
    };

    if (!JEFCOUNTS_CONFIG.endpoint) {
        return;
    }

    var detection = {
        interactions: 0,
        start: Date.now(),
        lastUrl: '' 
    };

    function quickDetect() {
        var score = 0;
        if (navigator.webdriver) score += 60;                               
        if (window.callPhantom || window._phantom) score += 60;               
        if (navigator.userAgent.indexOf('HeadlessChrome') > -1) score += 60;   
        if (!navigator.languages || navigator.languages.length === 0) score += 30; 
        if (navigator.plugins.length === 0) score += 20;                       
        if (screen.width === 0 || screen.height === 0) score += 40;            
        return Math.min(score, 100);
    }

    function trackInteraction() {
        detection.interactions++;
        if (detection.interactions > 3) removeListeners();
    }

    function removeListeners() {
        document.removeEventListener('mousemove', trackInteraction);
        document.removeEventListener('click', trackInteraction);
    }

    function setupTracking() {
        document.addEventListener('mousemove', trackInteraction, { passive: true });
        document.addEventListener('click', trackInteraction, { passive: true });
        setTimeout(removeListeners, 3000);
    }

    function buildPayload() {
        var referrer = document.referrer || '';
        try {
            var params = new URLSearchParams(window.location.search);
            var refParam = params.get('ref');
            var utmSource = params.get('utm_source');
            if (refParam && refParam.indexOf('http') === 0) {
                referrer = refParam;
            } else if (utmSource) {
                referrer = 'utm_source=' + utmSource;
            }
        } catch (e) {}

        var data = {
            url: window.location.href,
            site_key: JEFCOUNTS_CONFIG.siteKey,
            ref: referrer
        };

        var score = quickDetect();
        if (detection.interactions === 0 && Date.now() - detection.start > 1000) {
            score += 25;
        }
        if (score > 20 || detection.interactions === 0) {
            data.bot_score = score;
            data.interactions = detection.interactions;
        }
        return data;
    }

    function send(forceBeacon) {
        var url = window.location.href;
        if (url === detection.lastUrl) return; 
        detection.lastUrl = url;

        var data = buildPayload();
        if (JEFCOUNTS_CONFIG.debug) console.log('[JefCounts] track:', data);
        var json = JSON.stringify(data);

        if (forceBeacon || navigator.sendBeacon) {
            var blob = new Blob([json], { type: 'application/json' });
            if (navigator.sendBeacon(JEFCOUNTS_CONFIG.endpoint, blob)) return;
        }
        if (window.fetch) {
            fetch(JEFCOUNTS_CONFIG.endpoint, {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: json,
                keepalive: true
            }).catch(function () {
            });
            return;
        }
        var xhr = new XMLHttpRequest();
        xhr.open('POST', JEFCOUNTS_CONFIG.endpoint, true);
        xhr.setRequestHeader('Content-Type', 'application/json');
        xhr.timeout = 1500;
        xhr.send(json);
    }

    function init() {
        setupTracking();
        setTimeout(send, JEFCOUNTS_CONFIG.delay);
        window.addEventListener('pagehide', function () {
            send(true);
        });
    }

    if (document.readyState === 'complete') {
        init();
    } else {
        window.addEventListener('load', init);
    }

    if (window.history && window.history.pushState) {
        var pushState = history.pushState;
        history.pushState = function () {
            pushState.apply(history, arguments);
            setTimeout(function () { send(); }, 100);
        };
        window.addEventListener('popstate', function () {
            setTimeout(function () { send(); }, 100);
        });
    }
})();