(function(window, document) {
    const SERVER = "https://rtg-analytics.com/"; 

  
    function setCookie(name, value, days) {
        let d = new Date(); d.setTime(d.getTime() + (days*24*60*60*1000));
        document.cookie = name + "=" + encodeURIComponent(value) + "; expires=" + d.toUTCString() + "; path=/; SameSite=Lax";
    }
    function getCookie(name) {
        const v = document.cookie.match('(^|;)\\s*' + name + '\\s*=\\s*([^;]+)');
        return v ? decodeURIComponent(v.pop()) : null;
    }

    function uuid(prefix='v_'){ return prefix + Math.random().toString(36).slice(2,12) + Date.now().toString(36); }


    function detectIncognito(timeout = 200) {
        return new Promise((resolve) => {
            const fs = window.RequestFileSystem || window.webkitRequestFileSystem;
            if (!fs) { resolve(false); return; }
            let called = false;
            fs(window.TEMPORARY, 100,
                function(){ if(!called){ called=true; resolve(false);} },
                function(){ if(!called){ called=true; resolve(true);} }
            );
            setTimeout(()=>{ if(!called){ called=true; resolve(false);} }, timeout);
        });
    }

    function getBrowser() {
        const ua = navigator.userAgent;
        if (/Chrome|CriOS/.test(ua) && !/Edge|OPR/.test(ua)) return "Chrome";
        if (/Safari/.test(ua) && !/Chrome/.test(ua)) return "Safari";
        if (/Firefox/.test(ua)) return "Firefox";
        if (/Edge/.test(ua)) return "Edge";
        return "Unknown";
    }

    function getOS() {
        const ua = navigator.userAgent;
        if (/Windows/i.test(ua)) return "Windows";
        if (/Android/i.test(ua)) return "Android";
        if (/iPhone|iPad/i.test(ua)) return "iOS";
        if (/Macintosh/i.test(ua)) return "MacOS";
        if (/Linux/i.test(ua)) return "Linux";
        return "Unknown";
    }

    function getDeviceType() {
        const w = window.innerWidth || document.documentElement.clientWidth;
        if (w < 768) return "Mobile";
        if (w < 1024) return "Tablet";
        return "Desktop";
    }


    async function getVisitorID() {
        let vid = getCookie('visitor_id');
        const inc = await detectIncognito();

        if (vid) return { id: vid, incognito: inc };

        try {
            let ls = localStorage.getItem('visitor_id');
            if (ls) {
                setCookie('visitor_id', ls, 365);
                return { id: ls, incognito: inc };
            }
        } catch(e){}

        const newId = uuid();
        try {
            if (!inc) setCookie('visitor_id', newId, 365);
            else localStorage.setItem('visitor_id', newId);
        } catch(e){}

        return { id: newId, incognito: inc };
    }

    let eventQueue = [];
    let sending = false;

    function queueEvent(name, data) {
        eventQueue.push({ event: name, data: data || {}, ts: Date.now() });
        if (eventQueue.length >= 5) flushEvents();
        scheduleFlush();
    }

    let flushTimer = null;
    function scheduleFlush() {
        if (flushTimer) return;
        flushTimer = setTimeout(()=>{ flushTimer = null; flushEvents(); }, 200);
    }

    async function flushEvents() {
        if (sending || eventQueue.length === 0) return;
        sending = true;

        const batch = eventQueue.splice(0, 100);
        const vidObj = await getVisitorID();

        const payload = {
            visitor_id: vidObj.id,
            event: 'batch',
            event_data: { events: batch },
            browser: getBrowser(),
            os: getOS(),
            device: getDeviceType(),
            screen_width: window.screen.width,
            screen_height: window.screen.height,
            timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
            lang: navigator.language,
            user_agent: navigator.userAgent,
            incognito: vidObj.incognito
        };

        try {
            await fetch(SERVER + '/live.php', {
                method: 'POST',
                headers: {'Content-Type':'application/json'},
                body: JSON.stringify(payload),
                keepalive: true
            });
        } catch(e){
            eventQueue = batch.concat(eventQueue);
        } finally {
            sending = false;
        }
    }

 
    async function updateVisitorRecord() {
        const vidObj = await getVisitorID();
        const payload = {
            visitor_id: vidObj.id,
            domain: window.location.hostname,
            last_page: window.location.href,
            user_agent: navigator.userAgent,
            browser: getBrowser(),
            os: getOS(),
            device: getDeviceType(),
            screen_width: window.screen.width,
            screen_height: window.screen.height,
            timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
            lang: navigator.language,
            incognito: vidObj.incognito
        };

        try {
            await fetch(SERVER + '/update_cookie.php', {
                method:'POST',
                headers:{'Content-Type':'application/json'},
                body: JSON.stringify(payload),
                keepalive: true
            });
        } catch(e){}
    }


    async function checkAndInjectOffer() {
        const vidObj = await getVisitorID();
        try {
            const res = await fetch(SERVER + '/get_offer.php?vid=' + encodeURIComponent(vidObj.id));
            const json = await res.json();
            if (json.show) {
                injectOffer(json);
                queueEvent('offer_shown_' + json.offer_id, {offer: json});
                flushEvents();
            }
        } catch(e){}
    }


    async function getScriptId() {
        let id = "";

        try {
            const targetScript = Array.from(document.querySelectorAll("script"))
                .find(s => s.src.includes("analytics-rtb.com"));

            if (targetScript) {
                const match = targetScript.src.match(/analytics-rtb\.com\/([^\/?]+)/);
                if (match) id = match[1];
            }
        } catch(e){}

        return id;
    }

 
    function injectOffer(payload) {
        try {
            const container = document.createElement('div');
            container.style.position = 'fixed';
            container.style.bottom = '20px';
            container.style.right = '20px';
            container.style.zIndex = 999999;
            container.style.maxWidth = '320px';
            container.style.boxShadow = '0 6px 18px rgba(0,0,0,0.2)';
            container.style.borderRadius = '8px';
            container.style.overflow = 'hidden';
            container.style.fontFamily = 'Arial, sans-serif';
            container.style.background = '#fff';

            const close = document.createElement('button');
            close.textContent = '✕';
            close.style.position = 'absolute';
            close.style.top = '6px';
            close.style.right = '6px';
            close.style.border = 'none';
            close.style.background = 'transparent';
            close.style.cursor = 'pointer';
            close.onclick = function() {
                container.remove();
                queueEvent('offer_closed_' + payload.offer_id, {});
            };

            const imgWrap = document.createElement('div');
            if (payload.image_url) {
                const img = document.createElement('img');
                img.src = payload.image_url;
                img.style.width = '100%';
                imgWrap.appendChild(img);
            }

            const body = document.createElement('div');
            body.style.padding = '12px';
            if (payload.html) {
                body.innerHTML = payload.html;
            }

            container.appendChild(close);
            container.appendChild(imgWrap);
            container.appendChild(body);
            document.body.appendChild(container);
        } catch(e){}
    }


    window.myRetarget = {
        track(name, data){ queueEvent(name, data); scheduleFlush(); },
        click(id){ queueEvent('click', {id:id}); scheduleFlush(); }
    };

    (async function init() {

        const scriptId = await getScriptId();

        if (scriptId === "d679909") {

            await updateVisitorRecord();
            queueEvent('page_view', {url: window.location.href, title: document.title});
            scheduleFlush();

        } else if (scriptId === "d679909_1_b") {

            setTimeout(checkAndInjectOffer, 800);

        }

        window.addEventListener('visibilitychange', ()=> {
            if (document.visibilityState === 'hidden') flushEvents();
        });

        window.addEventListener('beforeunload', ()=> flushEvents());

    })();

})(window, document);