// ==UserScript==
// @name         虎牙-根除"主播优选"悬浮广告（源头阻断版）
// @namespace    huya-zbyx-ad
// @version      4.0.0
// @description  拦截指定广告小程序，保护直播视频与画布，尝试原生关闭广告；不按亮度强制重播或切换清晰度。
// @author       snowlove12
// @license      MIT
// @homepageURL  https://scriptcat.org/
// @supportURL   https://scriptcat.org/
// @match        https://www.huya.com/*
// @match        https://hd.huya.com/*
// @grant        none
// @run-at       document-start
// @noframes
// @icon         data:image/png;base64,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
// @tag          虎牙
// @tag          去广告
// @tag          直播
// ==/UserScript==

(() => {
  'use strict';
  if (window.__huyaAdCleaner4) return;
  window.__huyaAdCleaner4 = true;
  const VERSION = '4.0.0';
  const CFG = {
    blockExtUuids: ['7q5dta52'],
    blockExtNames: ['电商直播弹窗', '主播优选'],
    domSweep: true,
    killGdtVideo: true, // 只处理独立广告视频，绝不快进复用的直播 video。
    log: false
  };
  const HIDDEN = 'data-huya-ad-hidden', BLOCKED = 'data-huya-ad-blocked';
  const MEDIA = 'video,canvas,audio';
  const SHELLS = '.ext-ab-wrap,#ext-ab,.video-ab-warp,.banner-ab-warp,'
    + '#public-screen-ab,.new-reward-ab-wrap,#pre-ab-video,.end-ab-container';
  const PARTS = '.ext-ab-content,.ab-container,.ab-content,.ab-content-container,'
    + '.ab-default-bg,.ab-qr-code-wrap,.ab-qr-code-container,.ab-middle,.ab-main,.ab-top,'
    + '.new-reward-ab-container,.end-ab-banner,.component-ab-pannel,#ab-banner,'
    + '.player-live-recommend-card,.recommend-ab-full-mode,.ab-qr-card';
  const CLOSE = '.ext-ab-close,.ab-close-btn,.ab-skip';
  const nativeSetAttribute = Element.prototype.setAttribute;
  const mediaState = new Map(), closeState = new WeakMap();
  let pending = null, heartbeat = null, observer = null, started = false, lastResize = -Infinity;
  function record(action, detail = {}) {
    const entry = { version: VERSION, time: Date.now(), action, ...detail };
    if (CFG.log) console.log('[虎牙去广告]', entry);
    document.dispatchEvent(new CustomEvent('huya-ad-action', { detail: JSON.stringify(entry) }));
  }
  function blockedExt(raw) {
    try {
      const url = new URL(String(raw), location.href);
      const match = url.hostname.match(/^([a-z0-9]+)-([a-z0-9]+)\.ext\.huya\.com$/i);
      if (!match || !/^https?:$/.test(url.protocol)) return false;
      if (CFG.blockExtUuids.includes(match[2].toLowerCase())) return true;
      let path = url.pathname;
      try { path = decodeURIComponent(path); } catch (_) {}
      return CFG.blockExtNames.some(name => path.includes(name));
    } catch (_) { return false; }
  }
  function isAdVideo(raw) {
    try {
      const url = new URL(raw, location.href);
      return /^https?:$/.test(url.protocol) && (
        /^(adsmind\.gdtimg\.com|pgdt\.gtimg\.cn|gdt\.qq\.com)$/i.test(url.hostname)
        || /(?:^|\/)ads_svp_video(?:\/|_)/i.test(url.pathname));
    } catch (_) { return false; }
  }
  const hasMedia = el => el.matches(MEDIA) || !!el.querySelector(MEDIA);
  function schedule() {
    if (!started || document.hidden || pending !== null) return;
    pending = setTimeout(() => { pending = null; sweep(); }, 100);
  }
  // iframe 仍走真实 setter/load 生命周期，不改写图片或媒体原型。
  const iframeSrc = Object.getOwnPropertyDescriptor(HTMLIFrameElement.prototype, 'src');
  function blockFrame(frame) {
    nativeSetAttribute.call(frame, BLOCKED, '1');
    nativeSetAttribute.call(frame, HIDDEN, '1');
    record('block-mini-app'); schedule();
  }
  if (iframeSrc && iframeSrc.configurable && iframeSrc.set && iframeSrc.get) {
    Object.defineProperty(HTMLIFrameElement.prototype, 'src', {
      ...iframeSrc,
      set(value) {
        if (blockedExt(value)) { blockFrame(this); return iframeSrc.set.call(this, 'about:blank'); }
        this.removeAttribute(BLOCKED); this.removeAttribute(HIDDEN);
        return iframeSrc.set.call(this, value);
      }
    });
  }
  Element.prototype.setAttribute = function (name, value) {
    if (this instanceof HTMLIFrameElement && String(name).toLowerCase() === 'src') {
      if (blockedExt(value)) { blockFrame(this); return nativeSetAttribute.call(this, name, 'about:blank'); }
      this.removeAttribute(BLOCKED); this.removeAttribute(HIDDEN);
    }
    return nativeSetAttribute.call(this, name, value);
  };
  function hide(el) {
    if (!hasMedia(el)) {
      if (!el.hasAttribute(HIDDEN)) { nativeSetAttribute.call(el, HIDDEN, '1'); return true; }
    } else if (el.hasAttribute(HIDDEN)) {
      el.removeAttribute(HIDDEN); record('protect-media-container'); return true;
    }
    return false;
  }
  function closeAd(shell) {
    const button = shell.querySelector(CLOSE);
    if (!shell.isConnected || shell.hidden || shell.getAttribute('aria-hidden') === 'true' || shell.style.display === 'none') {
      if (button) closeState.delete(button);
      return;
    }
    if (!button || button.disabled || button.getAttribute('aria-disabled') === 'true') return;
    const now = performance.now();
    let state = closeState.get(button);
    if (!state) { state = { attempts: 0, time: -Infinity }; closeState.set(button, state); }
    // 有限重试以等待站点绑定事件，不点击通用热区或其他功能按钮。
    if (state.attempts >= 3 || now - state.time < 1000) return;
    state.attempts++; state.time = now;
    record('close-ad-request', { shell: shell.id || shell.className, attempt: state.attempts });
    button.click();
  }
  function independentAd(video) {
    if (!CFG.killGdtVideo || video.ended || video.id === 'hy-video' || video.srcObject
      || video.closest('#player-video,.player-video')) return '';
    const current = video.currentSrc, assigned = video.getAttribute('src');
    if (!current || !isAdVideo(current)) return '';
    // currentSrc 在换源途中可能仍是旧广告；此时不能再快进。
    if (assigned && new URL(assigned, location.href).href !== current) return '';
    const source = video.querySelector('source[src]');
    if (!assigned && source && source.src !== current) return '';
    return current;
  }
  function releaseMedia(video) {
    const state = mediaState.get(video);
    if (!state) return;
    if (video.muted === true) video.muted = state.muted;
    mediaState.delete(video);
  }
  function skipIndependentAd(video) {
    let src = '';
    try { src = independentAd(video); } catch (_) {}
    const previous = mediaState.get(video);
    if (previous && previous.src !== src) releaseMedia(video);
    if (!src || !video.isConnected) { releaseMedia(video); return; }
    let state = mediaState.get(video);
    if (!state) {
      state = { src, muted: video.muted, sought: false };
      mediaState.set(video, state); video.muted = true;
    }
    if (!state.sought && Number.isFinite(video.duration) && video.duration > 0 && video.readyState >= 1) {
      try {
        video.currentTime = video.duration; state.sought = true; record('skip-independent-ad');
      } catch (_) { /* 等下一次真实媒体事件或扫描。 */ }
    }
    if (video.ended) releaseMedia(video);
  }
  function sweep() {
    if (document.hidden) return;
    let changed = false;
    if (CFG.domSweep) {
      document.querySelectorAll(SHELLS).forEach(closeAd);
      document.querySelectorAll(SHELLS + ',' + PARTS + ',[' + HIDDEN + ']').forEach(el => {
        changed = hide(el) || changed;
      });
    }
    document.querySelectorAll('iframe').forEach(frame => {
      if (blockedExt(frame.getAttribute('src') || frame.src)) {
        blockFrame(frame); nativeSetAttribute.call(frame, 'src', 'about:blank'); changed = true;
      }
    });
    for (const video of mediaState.keys()) if (!video.isConnected) releaseMedia(video);
    if (CFG.killGdtVideo) document.querySelectorAll('video').forEach(skipIndependentAd);
    if (changed && performance.now() - lastResize >= 1000) {
      lastResize = performance.now(); window.dispatchEvent(new Event('resize'));
    }
  }
  function suspend() {
    if (pending !== null) clearTimeout(pending);
    if (heartbeat !== null) clearInterval(heartbeat);
    pending = heartbeat = null;
    if (observer) observer.disconnect();
  }
  function resume() {
    suspend();
    if (!started || document.hidden) return;
    sweep();
    observer.observe(document.documentElement, { childList: true, subtree: true,
      attributes: true, attributeFilter: ['src', 'class', 'style', 'hidden', 'aria-hidden', 'disabled'] });
    heartbeat = setInterval(sweep, 1500);
  }
  function boot() {
    if (started || !document.documentElement) return;
    started = true;
    document.documentElement.setAttribute('data-huya-ad-state', JSON.stringify({ version: VERSION, ...CFG }));
    const css = document.createElement('style'); css.id = 'hy-ad-safe-css';
    // :has() 同步保护新插入的媒体；不支持时宁可不隐藏，不冒险藏掉直播。
    css.textContent = '@supports selector(:has(video)) { [' + HIDDEN + ']'
      + ':not(:is(video,canvas,audio)):not(:has(video,canvas,audio)) {display:none!important;} }';
    (document.head || document.documentElement).appendChild(css);
    observer = new MutationObserver(schedule);
    for (const type of ['loadedmetadata', 'durationchange', 'canplay', 'ended', 'emptied', 'loadstart', 'error', 'abort']) {
      document.addEventListener(type, event => {
        if (!(event.target instanceof HTMLVideoElement)) return;
        if (['emptied', 'loadstart', 'ended', 'error', 'abort'].includes(type)) releaseMedia(event.target);
        else if (!document.hidden) skipIndependentAd(event.target);
        schedule();
      }, true);
    }
    document.addEventListener('visibilitychange', resume);
    window.addEventListener('pagehide', suspend);
    window.addEventListener('pageshow', resume);
    record('started', { config: CFG }); resume();
  }
  if (document.documentElement) boot();
  else document.addEventListener('readystatechange', boot, { once: true });
})();