(() => {
    // 1. Block WebSocket telemetry
    const originalSend = WebSocket.prototype.send;
    WebSocket.prototype.send = function (data) {
        const str = typeof data === 'string' ? data : '';
        if (str.includes('playbackRate') || str.includes('devtools') || str.includes('automation')) {
            console.log("⚠️ Blocked suspicious WebSocket message:", str);
            return;
        }
        return originalSend.apply(this, arguments);
    };

    // 2. Disable MutationObserver
    window.MutationObserver = class {
        constructor() { console.log("⚠️ MutationObserver blocked"); }
        observe() {}
        disconnect() {}
        takeRecords() { return []; }
    };

    // 3. Spoof playbackRate
    const mediaSet = new WeakMap();
    function stealthRatePatch(mediaEl, realRate) {
        if (!mediaEl || mediaSet.has(mediaEl)) return;
        mediaEl.playbackRate = realRate;
        Object.defineProperty(mediaEl, 'playbackRate', {
            get: () => 1,
            set: r => mediaEl.defaultPlaybackRate = r,
            configurable: true
        });
        mediaSet.set(mediaEl, true);
    }

    // 4. Block pause() globally
    const blockPause = (el) => {
        const originalPause = el.pause;
        el.pause = () => {
            if (!el.dataset.allowPause) {
                console.debug("🛑 Blocked pause()");
                return;
            }
            return originalPause.call(el);
        };
    };
    const hookMediaElements = () => {
        document.querySelectorAll('video, audio').forEach(el => {
            if (!el.dataset.pauseHooked) {
                blockPause(el);
                el.dataset.pauseHooked = 'true';
            }
        });
    };
    setInterval(hookMediaElements, 1000);

    // 5. Safe play logic
    function playSafely(mediaEl, speed = 7) {
        if (!mediaEl || mediaEl.readyState < 2 || !mediaEl.paused) return;
        stealthRatePatch(mediaEl, speed);
        mediaEl.dataset.allowPause = 'false';
        mediaEl.play()
            .then(() => setTimeout(() => mediaEl.dataset.allowPause = 'true', 500))
            .catch(err => {
                if (err.name !== 'AbortError') console.warn("⚠️ Play error:", err);
                mediaEl.dataset.allowPause = 'true';
            });
    }

    // 6. Visibility spoofing
    const originalAddEventListener = document.addEventListener;
    document.addEventListener = function (type, listener, options) {
        if (['visibilitychange', 'blur', 'focusout'].includes(type)) return;
        return originalAddEventListener.call(this, type, listener, options);
    };
    document.hasFocus = () => true;
    window.onblur = null;
    window.onfocus = null;
    const forceVisible = () => {
        document.dispatchEvent(new Event('visibilitychange'));
    };

    // 7. Stuck screen buster
    function bustStuckScreens() {
        const keywords = ['next', 'continue', 'got it', 'start', 'okay', 'ok', 'finish', 'done'];
        const candidates = Array.from(document.querySelectorAll('button, a, div'))
            .filter(el => {
                const text = el.innerText?.toLowerCase() || '';
                const aria = el.getAttribute('aria-label')?.toLowerCase() || '';
                const isKeywordMatch = keywords.some(k => text.includes(k) || aria.includes(k));
                const isClickable = el.offsetParent !== null && el.clientHeight > 10 && el.clientWidth > 10;
                return isKeywordMatch && isClickable;
            });

        if (candidates.length > 0) {
            candidates.forEach(btn => {
                try { btn.click(); } catch (e) { console.warn("⚠️ Couldn’t click:", e); }
            });
        }
    }

    // 8. Audio popups
    async function handleAudioPopupsSequentially() {
        const popupButtons = Array.from(document.querySelectorAll('.audioPopUpBtn button'));
        for (const btn of popupButtons) {
            const parent = btn.closest('.audioPopUpBtn');
            const audio = parent?.querySelector('audio');
            if (!audio || !audio.paused || audio.dataset.playedOnce) continue;

            btn.click();
            await new Promise(r => setTimeout(r, 300));

            try {
                audio.playbackRate = 7;
                await audio.play();
                audio.dataset.playedOnce = 'true';
                await new Promise(res => {
                    const timeout = setTimeout(res, 3000);
                    audio.onended = () => {
                        clearTimeout(timeout);
                        res();
                    };
                });
            } catch (e) {
                console.warn("⚠️ Popup audio play error:", e);
            }

            await new Promise(r => setTimeout(r, 300));
        }
    }

    // 9. Click SVG icons one-by-one until Next appears
    async function handleSvgAudioSequence() {
        const icons = Array.from(document.querySelectorAll('svg.sc-dZxRDy:not([data-played])'));

        if (!icons.length) return;

        const shuffled = icons.sort(() => Math.random() - 0.5);

        for (const icon of shuffled) {
            try {
                icon.click();
                icon.dataset.played = 'true';
                console.log("🎯 Clicked icon audio");
            } catch (e) {
                console.warn("⚠️ Failed to click SVG icon:", e);
                continue;
            }

            await new Promise(res => setTimeout(res, 300));

            const audio = document.querySelector('audio:not([data-icon-audio-played])');
            if (audio) {
                try {
                    audio.playbackRate = 7;
                    await audio.play();
                    audio.dataset.iconAudioPlayed = 'true';
                    await new Promise(res => {
                        const timeout = setTimeout(res, 3000);
                        audio.onended = () => {
                            clearTimeout(timeout);
                            res();
                        };
                    });
                } catch (e) {
                    console.warn("⚠️ SVG audio play error:", e);
                }
            } else {
                await new Promise(res => setTimeout(res, 2000));
            }

            const nextBtn = document.querySelector('#nextBtn:not([disabled]), button:has(svg[title="Next"]):not([disabled])');
            if (nextBtn) return;
        }
    }

    // 10. Try multiple-choice answers
    async function tryRandomAnswerUntilNextAppears() {
        const answerButtons = Array.from(document.querySelectorAll('button.sc-WsMwQ:not([disabled])'))
            .filter(btn => btn.offsetParent !== null && btn.clientHeight > 10);

        if (answerButtons.length === 0) return;

        const shuffled = answerButtons.sort(() => Math.random() - 0.5);

        for (const btn of shuffled) {
            try {
                btn.click();
                console.log("🎯 Tried answer:", btn.innerText || btn.textContent);
            } catch (e) {
                continue;
            }

            await new Promise(res => setTimeout(res, 800));

            const nextBtn = document.querySelector('#nextBtn:not([disabled]), button:has(svg[title="Next"]):not([disabled])');
            if (nextBtn) return;
        }
    }

    // 11. Main loop
    async function safeLoop() {
        try {
            await handleAudioPopupsSequentially();
            await handleSvgAudioSequence();
            await tryRandomAnswerUntilNextAppears();

            const video = document.querySelector('video#videoJsBox_html5_api');
            if (video) playSafely(video, 7);

            document.querySelectorAll('audio').forEach(audio => {
                playSafely(audio, 7);
            });

            const audioPlayButton = document.querySelector('button[aria-label="Play the audio"]:has(svg[class*="sc-nxhrv jtjxhD"])');
            if (audioPlayButton) audioPlayButton.click();

            document.querySelector('li[aria-label="Open details"][aria-expanded="false"] div[class*="sc-iNmOIt diMVdc"] > div')?.click();
            document.querySelector('button[class*="sc-hiOjR fGRJN"]')?.click();
            document.querySelector('div[class*="sc-elmJXA jlnpqm"] button[title="Play"]')?.click();
            document.querySelector('#nextBtn')?.click();

            bustStuckScreens();
        } catch (err) {
            console.warn("⚠️ Loop error:", err);
        }

        forceVisible();
        setTimeout(() => safeLoop(), 1000);
    }

    setTimeout(() => safeLoop(), 500);
})();