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South Plus Media Preview

在南+列表页标题下方预览楼主图片和第三方媒体,支持 Gofile 图片/视频封面与弹窗播放。

ही स्क्रिप्ट इंस्टॉल करण्यासाठी तुम्हाला Tampermonkey, Greasemonkey किंवा Violentmonkey यासारखे एक्स्टेंशन इंस्टॉल करावे लागेल.

You will need to install an extension such as Tampermonkey to install this script.

ही स्क्रिप्ट इंस्टॉल करण्यासाठी तुम्हाला Tampermonkey किंवा Violentmonkey यासारखे एक्स्टेंशन इंस्टॉल करावे लागेल..

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

ही स्क्रिप्ट इंस्टॉल करण्यासाठी तुम्हाला Tampermonkey यासारखे एक्स्टेंशन इंस्टॉल करावे लागेल..

ही स्क्रिप्ट इंस्टॉल करण्यासाठी तुम्हाला एक युझर स्क्रिप्ट व्यवस्थापक एक्स्टेंशन इंस्टॉल करावे लागेल.

(माझ्याकडे आधीच युझर स्क्रिप्ट व्यवस्थापक आहे, मला इंस्टॉल करू द्या!)

ही स्टाईल इंस्टॉल करण्यासाठी तुम्हाला Stylus सारखे एक्स्टेंशन इंस्टॉल करावे लागेल.

ही स्टाईल इंस्टॉल करण्यासाठी तुम्हाला Stylus सारखे एक्स्टेंशन इंस्टॉल करावे लागेल.

ही स्टाईल इंस्टॉल करण्यासाठी तुम्हाला Stylus सारखे एक्स्टेंशन इंस्टॉल करावे लागेल.

ही स्टाईल इंस्टॉल करण्यासाठी तुम्हाला एक युझर स्टाईल व्यवस्थापक इंस्टॉल करावे लागेल.

ही स्टाईल इंस्टॉल करण्यासाठी तुम्हाला एक युझर स्टाईल व्यवस्थापक इंस्टॉल करावे लागेल.

ही स्टाईल इंस्टॉल करण्यासाठी तुम्हाला एक युझर स्टाईल व्यवस्थापक इंस्टॉल करावे लागेल.

(माझ्याकडे आधीच युझर स्टाईल व्यवस्थापक आहे, मला इंस्टॉल करू द्या!)

// ==UserScript==
// @name         South Plus Media Preview
// @namespace    https://bbs.level-plus.net/
// @version      1.0.0
// @license MIT
// @description  在南+列表页标题下方预览楼主图片和第三方媒体,支持 Gofile 图片/视频封面与弹窗播放。
// @author       Codex
// @match        *://*.east-plus.net/*
// @match        *://east-plus.net/*
// @match        *://*.south-plus.net/*
// @match        *://south-plus.net/*
// @match        *://*.south-plus.org/*
// @match        *://south-plus.org/*
// @match        *://*.white-plus.net/*
// @match        *://white-plus.net/*
// @match        *://*.north-plus.net/*
// @match        *://north-plus.net/*
// @match        *://*.level-plus.net/*
// @match        *://level-plus.net/*
// @match        *://*.soul-plus.net/*
// @match        *://soul-plus.net/*
// @match        *://*.snow-plus.net/*
// @match        *://snow-plus.net/*
// @match        *://*.spring-plus.net/*
// @match        *://spring-plus.net/*
// @match        *://*.summer-plus.net/*
// @match        *://summer-plus.net/*
// @match        *://*.blue-plus.net/*
// @match        *://blue-plus.net/*
// @match        *://*.imoutolove.me/*
// @match        *://imoutolove.me/*
// @run-at       document-idle
// @grant        GM_xmlhttpRequest
// @connect      gofile.io
// @connect      api.gofile.io
// @connect      *.gofile.io
// @connect      ibb.co
// @connect      imgbox.com
// @connect      imagebam.com
// @connect      imagevenue.com
// @connect      postimg.cc
// @connect      pixhost.to
// @connect      imgur.com
// @connect      lensdump.com
// ==/UserScript==

(function () {
  "use strict";

  const CONFIG = {
    maxThreads: 0,
    maxImagesPerThread: 24,
    maxHostPageResolves: 6,
    autoBuyFreeContent: true,
    maxFreeBuyActions: 2,
    concurrency: 5,
    requestTimeoutMs: 15000,
    requestDelayMs: 120,
    cacheTtlMs: 12 * 60 * 60 * 1000,
    scanDebounceMs: 300,
    debug: false,
    slotClass: "spv-slot",
    stripClass: "spv-strip",
    badgeClass: "spv-badge",
  };

  const IMAGE_HOST_RE = /(catbox\.moe|gofile\.io|imgbox\.com|imgur\.com|i\.imgur\.com|postimg|postimages|pixhost|ibb\.co|imgbb|imagebam|imagevenue|freeimage|imgpile|lensdump|iili\.io|jpg\d?\.|pixeldrain|telegra\.ph|discord(?:app)?\.com\/attachments|pbs\.twimg\.com|sinaimg|weibo|imoutolove|blue-plus|level-plus)/i;
  const HOST_PAGE_RE = /(gofile\.io\/d\/|ibb\.co|imgbox\.com|imagebam\.com|imagevenue\.com|postimg\.cc|pixhost\.to|imgur\.com\/(?!a\/)|lensdump\.com\/i\/)/i;
  const IMAGE_EXT_RE = /\.(?:jpg|jpeg|png|webp|gif|bmp)(?:[?#].*)?$/i;
  const VIDEO_EXT_RE = /\.(?:mp4|webm|mov|m4v)(?:[?#].*)?$/i;
  const ATTACHMENT_RE = /\/(?:attachment|upload)\//i;
  const EMOJI_RE = /\/(?:smile|smallface|kaoani|post\/smile|faces?|emot|emotion)\//i;
  const EMOJI_FILE_RE = /\/(?:face\d+|fly_\d+)\.(?:gif|jpg|jpeg|png|webp)$/i;
  const AVATAR_RE = /\/(?:avatar|face)\//i;
  const BUY_RE = /(?:buytopic|此帖售价|愿意购买|我买|我付钱|免费购买|隐藏内容|出售内容)/i;
  const FREE_BUY_RE = /(?:免费购买|售价[^\d]{0,12}0\s*(?:SP|sp|币)?|0\s*(?:SP|sp)币?|free)/i;
  const PAID_BUY_RE = /(?:售价[^\d]{0,12}[1-9]\d*\s*(?:SP|sp|币)?|[1-9]\d*\s*(?:SP|sp)币?)/i;

  const state = {
    seenTids: new Set(),
    seenNodes: new WeakSet(),
    queue: [],
    active: 0,
    found: 0,
    done: 0,
    scanTimer: 0,
    wheelStrip: null,
    wheelDelta: 0,
    wheelFrame: 0,
  };

  const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
  const debugLog = (...args) => {
    if (CONFIG.debug) console.log("[SouthPreview]", ...args);
  };
  const debugWarn = (...args) => {
    if (CONFIG.debug) console.warn("[SouthPreview]", ...args);
  };

  init();

  function init() {
    injectStyle();
    cleanup();
    bindWheelScroll();
    scanAndEnqueue();
    observeChanges();
  }

  function bindWheelScroll() {
    document.addEventListener("wheel", handleWheel, { passive: false });
  }

  function handleWheel(event) {
    const strip = event.target.closest && event.target.closest(`.${CONFIG.stripClass}`);
    if (!strip || strip.scrollWidth <= strip.clientWidth) return;

    const delta = Math.abs(event.deltaX) > Math.abs(event.deltaY) ? event.deltaX : event.deltaY;
    if (!delta) return;

    state.wheelStrip = strip;
    state.wheelDelta += delta;
    if (!state.wheelFrame) {
      state.wheelFrame = requestAnimationFrame(flushWheel);
    }

    event.preventDefault();
    event.stopPropagation();
  }

  function flushWheel() {
    const strip = state.wheelStrip;
    const delta = state.wheelDelta;
    state.wheelStrip = null;
    state.wheelDelta = 0;
    state.wheelFrame = 0;

    if (!strip || !delta) return;
    strip.scrollLeft += delta;
    updateStripFade(strip);
  }

  function updateStripFade(strip) {
    if (!strip) return;
    const maxLeft = Math.max(0, strip.scrollWidth - strip.clientWidth - 1);
    strip.classList.toggle("spv-can-scroll-right", strip.scrollLeft < maxLeft);
  }

  function cleanup() {
    document
      .querySelectorAll(`.${CONFIG.slotClass}, .spv-panel, .spv-lightbox, .lp-preview-slot, .lp-preview-panel, .lp-preview-lightbox`)
      .forEach((node) => node.remove());
    document
      .querySelectorAll(".lp-preview-strip, .lp-preview-badge, .lp-preview-status")
      .forEach((node) => node.remove());
  }

  function observeChanges() {
    const observer = new MutationObserver(scheduleScan);
    observer.observe(document.body, { childList: true, subtree: true });
    window.addEventListener("popstate", scheduleScan);
    window.addEventListener("hashchange", scheduleScan);
    setInterval(scheduleScan, 3000);
  }

  function scheduleScan() {
    clearTimeout(state.scanTimer);
    state.scanTimer = setTimeout(scanAndEnqueue, CONFIG.scanDebounceMs);
  }

  function scanAndEnqueue() {
    for (const item of collectThreadItems()) enqueueItem(item);
    pumpQueue();
  }

  function collectThreadItems() {
    const items = [];

    for (const link of collectTitleLinks()) {
      if (state.seenNodes.has(link)) continue;

      const tid = getTid(link.href || link.getAttribute("href"));
      if (!tid) continue;
      if (CONFIG.maxThreads > 0 && state.found >= CONFIG.maxThreads) continue;

      const text = (link.textContent || "").trim();
      const row = link.closest("tr");
      const cell = findTitleCell(link);
      if (!text || !row || !cell) continue;

      state.seenNodes.add(link);

      const item = {
        tid,
        url: new URL(link.getAttribute("href"), location.href).href,
        link,
        row,
        cell,
        slot: ensureSlot(link, cell, tid),
      };

      if (state.seenTids.has(tid)) {
        const cached = readCache(tid);
        if (cached) renderResult(item, cached);
        continue;
      }

      state.seenTids.add(tid);
      items.push(item);
    }

    return items;
  }

  function collectTitleLinks() {
    const links = [];
    for (const row of document.querySelectorAll("tr")) {
      const rowLinks = Array.from(row.querySelectorAll('a[href*="read.php?tid-"]'));
      const titleLink = chooseTitleLink(row, rowLinks);
      if (titleLink) links.push(titleLink);
    }
    return links;
  }

  function chooseTitleLink(row, links) {
    let best = null;
    let bestScore = -Infinity;

    for (const link of links) {
      const score = scoreTitleLink(row, link);
      if (score > bestScore) {
        best = link;
        bestScore = score;
      }
    }

    return bestScore > 0 ? best : null;
  }

  function scoreTitleLink(row, link) {
    const text = (link.textContent || "").trim();
    const href = link.getAttribute("href") || "";
    const cell = link.closest("td");
    if (!text || text.length < 2) return -1000;
    if (state.seenNodes.has(link)) return -1000;
    if (/[?&]page=|#\d+$|pid-/i.test(href)) return -50;

    const cells = Array.from(row.children).filter((node) => node.tagName === "TD" || node.tagName === "TH");
    const cellIndex = cells.indexOf(cell);
    let score = Math.min(text.length, 80);
    if (cell && cell.querySelector("h3")) score += 60;
    if (link.closest("h3")) score += 80;
    if (cell && /subject|title|tal|f14|thread/i.test(cell.className || "")) score += 30;
    if (cellIndex >= 0 && cellIndex <= 2) score += 40;
    if (cellIndex >= 3) score -= 70;
    return score;
  }

  function findTitleCell(link) {
    return link.closest("td") || link.parentElement;
  }

  function ensureSlot(link, cell, tid) {
    let slot = cell.querySelector(`.${CONFIG.slotClass}[data-spv-tid="${tid}"]`);
    if (slot) return slot;

    slot = document.createElement("div");
    slot.className = CONFIG.slotClass;
    slot.dataset.spvTid = tid;

    const titleBlock = findTitleBlock(link, cell);
    titleBlock.insertAdjacentElement("afterend", slot);
    return slot;
  }

  function findTitleBlock(link, cell) {
    let node = link;
    while (node.parentElement && node.parentElement !== cell) node = node.parentElement;
    return node || link;
  }

  function getTid(url) {
    const match = String(url || "").match(/read\.php\?tid-(\d+)/i);
    return match ? match[1] : "";
  }

  function enqueueItem(item) {
    state.found += 1;
    state.queue.push(item);
  }

  function pumpQueue() {
    while (state.active < CONFIG.concurrency && state.queue.length) {
      const item = state.queue.shift();
      state.active += 1;
      processItem(item);
    }
  }

  async function processItem(item) {
    try {
      await sleep(CONFIG.requestDelayMs);
      await hydrateThread(item);
    } finally {
      state.active -= 1;
      state.done += 1;
      pumpQueue();
    }
  }

  async function hydrateThread(item) {
    const cached = readCache(item.tid);
    if (cached) {
      renderResult(item, cached);
      return;
    }

    try {
      const response = await fetchWithTimeout(item.url);
      if (!response.ok) throw new Error(`HTTP ${response.status}`);
      const html = await response.text();
      let doc = new DOMParser().parseFromString(html, "text/html");
      doc = await expandFreeBuyContent(doc, item.url);
      const result = await parseThreadDetail(doc, item.url, item.tid);
      writeCache(item.tid, result);
      renderResult(item, result);
    } catch (error) {
      debugWarn("Thread read failed", item.url, error);
    }
  }

  async function fetchWithTimeout(url, options = {}) {
    const controller = new AbortController();
    const timer = setTimeout(() => controller.abort(), CONFIG.requestTimeoutMs);
    try {
      return await fetch(url, {
        credentials: "include",
        cache: (options.method || "GET").toUpperCase() === "GET" ? "force-cache" : "no-store",
        ...options,
        signal: controller.signal,
      });
    } catch (error) {
      if (error && error.name === "AbortError") throw new Error("请求超时");
      throw error;
    } finally {
      clearTimeout(timer);
    }
  }

  async function expandFreeBuyContent(doc, pageUrl) {
    if (!CONFIG.autoBuyFreeContent) return doc;

    const actions = findFreeBuyActions(doc, pageUrl).slice(0, CONFIG.maxFreeBuyActions);
    if (!actions.length) return doc;

    let changed = false;
    for (const actionUrl of actions) {
      try {
        await sleep(CONFIG.requestDelayMs);
        const response = await fetchWithTimeout(actionUrl);
        if (response.ok) changed = true;
      } catch (error) {
        debugWarn("Free buy failed", actionUrl, error);
      }
    }

    if (!changed) return doc;

    try {
      await sleep(CONFIG.requestDelayMs);
      const response = await fetchWithTimeout(pageUrl);
      if (!response.ok) return doc;
      const html = await response.text();
      return new DOMParser().parseFromString(html, "text/html");
    } catch (error) {
      return doc;
    }
  }

  function findFreeBuyActions(doc, pageUrl) {
    const actions = [];

    for (const node of doc.querySelectorAll("input, button, a")) {
      const text = [
        node.getAttribute("value"),
        node.getAttribute("title"),
        node.getAttribute("onclick"),
        node.getAttribute("href"),
        node.textContent,
        node.parentElement ? node.parentElement.textContent : "",
      ].join(" ");

      if (!/buytopic/i.test(text)) continue;
      if (PAID_BUY_RE.test(text) && !FREE_BUY_RE.test(text)) continue;
      if (!FREE_BUY_RE.test(text) && !/免费|0\s*(?:SP|sp|币)?/i.test(text)) continue;

      const href = extractBuyActionUrl(node, text, pageUrl);
      if (href) actions.push(href);
    }

    return actions.filter(unique());
  }

  function extractBuyActionUrl(node, text, pageUrl) {
    const direct = node.getAttribute("href");
    if (direct && /buytopic/i.test(direct)) return new URL(direct, pageUrl).href;

    const onclick = node.getAttribute("onclick") || text || "";
    const quoted = onclick.match(/(?:location\.href|window\.location)\s*=\s*['"]([^'"]*buytopic[^'"]*)['"]/i);
    if (quoted) return new URL(quoted[1], pageUrl).href;

    const loose = onclick.match(/((?:job|read)\.php\?[^'"\s<>]*buytopic[^'"\s<>]*)/i);
    if (loose) return new URL(loose[1], pageUrl).href;

    return "";
  }

  async function parseThreadDetail(doc, threadUrl, tid) {
    const urls = new Set();
    const author = detectAuthor(doc);
    const docs = [{ doc, url: threadUrl }];

    let scanned = 0;
    for (const page of docs) {
      for (const post of collectAuthorPosts(page.doc, author)) {
        scanned += 1;
        collectMediaUrls(urls, post.content, page.url);
        if (urls.size >= CONFIG.maxImagesPerThread) break;
      }
      if (urls.size >= CONFIG.maxImagesPerThread) break;
    }

    if (!scanned) {
      const firstPost = doc.querySelector("#read_tpc") || doc.querySelector(".tpc_content");
      if (firstPost) collectMediaUrls(urls, firstPost, threadUrl);
    }

    const normalized = normalizeUrlList(urls);
    const images = normalized.filter((url) => !isHostPageUrl(url)).slice(0, CONFIG.maxImagesPerThread);
    const hostPages = normalized.filter((url) => isHostPageUrl(url)).slice(0, CONFIG.maxHostPageResolves);

    return {
      images,
      hostPages,
      media: [],
      note: "",
    };
  }

  function collectMediaUrls(urls, root, baseUrl) {
    if (!root) return;

    for (const img of root.querySelectorAll("img")) {
      addUrl(urls, getImageAttr(img), baseUrl);
      addUrlsFromText(urls, img.getAttribute("onclick") || "", baseUrl);
      addUrlsFromText(urls, img.outerHTML || "", baseUrl);
    }

    for (const node of root.querySelectorAll("[style]")) {
      addUrlsFromText(urls, node.getAttribute("style") || "", baseUrl);
    }

    for (const anchor of root.querySelectorAll("a[href]")) {
      const href = anchor.getAttribute("href") || "";
      if (!href || /^javascript:/i.test(href)) continue;
      const absolute = toAbsoluteUrl(href, baseUrl);
      if (absolute && isMediaCandidate(absolute)) urls.add(absolute);
      addUrlsFromText(urls, anchor.textContent || "", baseUrl);
      addUrlsFromText(urls, anchor.getAttribute("title") || "", baseUrl);
    }

    addUrlsFromText(urls, root.textContent || "", baseUrl);
  }

  function getImageAttr(img) {
    return (
      img.getAttribute("src") ||
      img.getAttribute("data-src") ||
      img.getAttribute("data-original") ||
      img.getAttribute("data-url") ||
      img.getAttribute("data-file") ||
      img.getAttribute("ess-data") ||
      img.getAttribute("zoomfile") ||
      img.getAttribute("file") ||
      ""
    );
  }

  function addUrl(set, raw, baseUrl) {
    const absolute = toAbsoluteUrl(raw, baseUrl);
    if (absolute) set.add(absolute);
  }

  function addUrlsFromText(set, text, baseUrl) {
    const source = String(text || "");
    const urlRe = /(?:https?:)?\/\/[^\s<>"'()]+|(?:attachment|upload)\/[^\s<>"'()]+/gi;
    let match;

    while ((match = urlRe.exec(source))) {
      const raw = htmlDecode(match[0]).replace(/[),,。.\]]+$/g, "");
      const absolute = toAbsoluteUrl(raw, baseUrl);
      if (absolute && isMediaCandidate(absolute)) set.add(absolute);
    }
  }

  function normalizeUrlList(urls) {
    return [...urls]
      .map(normalizeUrl)
      .filter(Boolean)
      .filter((url) => isMediaCandidate(url))
      .filter((url) => !isBlockedMedia(url))
      .filter(unique())
      .slice(0, CONFIG.maxImagesPerThread);
  }

  function toAbsoluteUrl(raw, baseUrl) {
    if (!raw) return "";
    try {
      const cleaned = htmlDecode(String(raw)).trim();
      if (!cleaned || /^data:/i.test(cleaned)) return "";
      if (/^\/\//.test(cleaned)) return `${location.protocol}${cleaned}`;
      return new URL(cleaned, baseUrl).href;
    } catch (error) {
      return "";
    }
  }

  function normalizeUrl(url) {
    try {
      const parsed = new URL(url, location.href);
      parsed.hash = "";
      return parsed.href;
    } catch (error) {
      return "";
    }
  }

  function htmlDecode(value) {
    const textarea = document.createElement("textarea");
    textarea.innerHTML = String(value || "");
    return textarea.value;
  }

  function isMediaCandidate(url) {
    return IMAGE_EXT_RE.test(url) || ATTACHMENT_RE.test(url) || IMAGE_HOST_RE.test(url);
  }

  function isHostPageUrl(url) {
    return HOST_PAGE_RE.test(url) && !IMAGE_EXT_RE.test(url);
  }

  function isBlockedMedia(url) {
    return EMOJI_RE.test(url) || EMOJI_FILE_RE.test(url) || AVATAR_RE.test(url);
  }

  function detectAuthor(doc) {
    const firstContent = doc.querySelector("#read_tpc") || doc.querySelector(".tpc_content");
    if (!firstContent) return null;
    const post = findPostContainer(firstContent);
    return post ? extractAuthor(post) : null;
  }

  function collectAuthorPosts(doc, author) {
    const contents = Array.from(doc.querySelectorAll("#read_tpc, .tpc_content"));
    const posts = [];
    const seen = new Set();

    for (const content of contents) {
      if (!author && content.id !== "read_tpc") continue;
      const post = findPostContainer(content);
      if (!post || seen.has(post)) continue;
      seen.add(post);
      if (!author || sameAuthor(extractAuthor(post), author)) posts.push({ post, content });
    }

    return posts;
  }

  function findPostContainer(content) {
    const doc = content.ownerDocument || document;
    let node = content;
    while (node && node !== doc.body) {
      if (node.tagName === "TR") return node;
      node = node.parentElement;
    }
    return content.closest("tr") || content.parentElement;
  }

  function extractAuthor(post) {
    const profile = post.querySelector("a[href^='u.php'], a[href*='/u.php']");
    const href = profile ? profile.getAttribute("href") || "" : "";
    const uidMatch = href.match(/uid[-=](\d+)/i) || href.match(/\/u\.php\?(\d+)/i);
    const uid = uidMatch ? uidMatch[1] : "";
    const name = profile ? (profile.textContent || "").trim() : "";
    return uid || name ? { uid, name } : null;
  }

  function sameAuthor(a, b) {
    if (!a || !b) return false;
    if (a.uid && b.uid) return a.uid === b.uid;
    if (a.name && b.name) return a.name === b.name;
    return false;
  }

  async function resolveHostPageMediaList(url) {
    try {
      await sleep(CONFIG.requestDelayMs);

      if (/gofile\.io\/d\//i.test(url)) {
        const media = await resolveGofileMediaList(url);
        if (media.length) return media;
      }

      const html = await requestText(url);
      const doc = new DOMParser().parseFromString(html, "text/html");
      const direct =
        getMeta(doc, "meta[property='og:image']") ||
        getMeta(doc, "meta[name='og:image']") ||
        getMeta(doc, "meta[name='twitter:image']") ||
        getMeta(doc, "meta[property='twitter:image']") ||
        findFirstImageInText(html, url);

      const absolute = toAbsoluteUrl(direct, url);
      return absolute && isMediaCandidate(absolute) && !isBlockedMedia(absolute)
        ? [{ type: "image", url: absolute, source: url }]
        : [];
    } catch (error) {
      debugWarn("Host resolve failed", url, error);
      return [];
    }
  }

  async function resolveGofileMediaList(url) {
    const idMatch = String(url).match(/gofile\.io\/d\/([a-z0-9-]+)/i);
    if (!idMatch) return [];

    const contentId = idMatch[1];
    try {
      const token = await getGofileGuestToken();
      const wt = await generateGofileWT(token);
      const params = new URLSearchParams({
        contentFilter: "",
        page: "1",
        pageSize: "1000",
        sortField: "createTime",
        sortDirection: "-1",
      });

      const text = await requestTextWithHeaders(`https://api.gofile.io/contents/${contentId}?${params}`, {
        Authorization: `Bearer ${token}`,
        "X-Website-Token": wt,
        "X-BL": navigator.language || "",
      });

      const data = JSON.parse(text);
      const root = data && data.data ? data.data : null;
      const files = flattenGofileChildren(root && root.children ? root.children : root);
      const media = files.map(gofileFileToMedia).filter(Boolean).slice(0, CONFIG.maxImagesPerThread);
      debugLog("Gofile media", contentId, media);
      return media;
    } catch (error) {
      debugWarn("Gofile resolve failed", contentId, error);
      return [];
    }
  }

  function flattenGofileChildren(children) {
    if (!children) return [];
    const values = Array.isArray(children) ? children : Object.values(children);
    const files = [];

    for (const child of values) {
      if (!child) continue;
      if (child.children) files.push(...flattenGofileChildren(child.children));
      else files.push(child);
    }

    return files;
  }

  function gofileFileToMedia(file) {
    if (!file) return null;

    const mime = file.mimetype || file.mimeType || file.contentType || "";
    const name = file.name || "";
    const fileUrl = file.directLink || file.link || file.downloadPage || buildGofileDownloadUrl(file);
    const poster = file.thumbnail || file.preview || "";

    if (/video\//i.test(mime) || VIDEO_EXT_RE.test(name) || VIDEO_EXT_RE.test(fileUrl)) {
      if (!fileUrl) return null;
      return {
        type: "video",
        url: poster || fileUrl,
        poster,
        videoUrl: fileUrl,
        source: fileUrl,
        name,
      };
    }

    if (/image\//i.test(mime) || IMAGE_EXT_RE.test(name) || IMAGE_EXT_RE.test(fileUrl) || IMAGE_EXT_RE.test(poster)) {
      return {
        type: "image",
        url: poster || fileUrl,
        source: fileUrl || poster,
        name,
      };
    }

    return null;
  }

  function buildGofileDownloadUrl(file) {
    const id = file.id || file.code;
    const name = file.name || "";
    if (!id || !name) return "";

    return `https://gofile.io/download/web/${encodeURIComponent(id)}/${encodeURIComponent(name)}`;
  }

  function findFirstImageInText(text, baseUrl) {
    const urlRe = /(?:https?:)?\/\/[^\s<>"'()]+|(?:\/|\.\/)?(?:attachment|upload)\/[^\s<>"'()]+/gi;
    let match;

    while ((match = urlRe.exec(String(text || "")))) {
      const absolute = toAbsoluteUrl(match[0].replace(/[),,。.\]]+$/g, ""), baseUrl);
      if (absolute && isMediaCandidate(absolute) && !isHostPageUrl(absolute) && !isBlockedMedia(absolute)) {
        return absolute;
      }
    }

    return "";
  }

  async function getGofileGuestToken() {
    const raw = localStorage.getItem("spv:gofile-token");
    try {
      const cached = raw ? JSON.parse(raw) : null;
      if (cached && cached.token && Date.now() - cached.time < 24 * 60 * 60 * 1000) return cached.token;
    } catch (error) {
      debugWarn("Invalid Gofile token cache", error);
    }

    const text = await requestTextWithHeaders("https://api.gofile.io/accounts", {}, "POST");
    const data = JSON.parse(text);
    const token = data && data.data ? data.data.token : "";
    if (!token) throw new Error("Gofile token missing");
    localStorage.setItem("spv:gofile-token", JSON.stringify({ token, time: Date.now() }));
    return token;
  }

  async function generateGofileWT(token) {
    const lang = navigator.language || "";
    const bucket = Math.floor(Date.now() / 1000 / 14400).toString();
    const input = `${navigator.userAgent}::${lang}::${token}::${bucket}::9844d94d963d30`;
    const bytes = new TextEncoder().encode(input);
    const digest = await crypto.subtle.digest("SHA-256", bytes);
    return Array.from(new Uint8Array(digest))
      .map((byte) => byte.toString(16).padStart(2, "0"))
      .join("");
  }

  async function getGofileVideoBlobUrl(url, onProgress) {
    const token = await getGofileGuestToken();
    const blob = await requestBlobWithHeaders(url, {
      Cookie: `accountToken=${token}`,
      Authorization: `Bearer ${token}`,
      Referer: "https://gofile.io/",
    }, "GET", onProgress);
    return URL.createObjectURL(blob);
  }

  function requestText(url) {
    return requestTextWithHeaders(url);
  }

  function requestTextWithHeaders(url, headers = {}, method = "GET") {
    const absolute = new URL(url, location.href);
    if (absolute.origin === location.origin) {
      return fetchWithTimeout(url, { method, headers }).then((response) => {
        if (!response.ok) throw new Error(`HTTP ${response.status}`);
        return response.text();
      });
    }

    if (typeof GM_xmlhttpRequest !== "function") {
      return fetchWithTimeout(url, { method, headers }).then((response) => {
        if (!response.ok) throw new Error(`HTTP ${response.status}`);
        return response.text();
      });
    }

    return new Promise((resolve, reject) => {
      const timer = setTimeout(() => reject(new Error("请求超时")), CONFIG.requestTimeoutMs);
      GM_xmlhttpRequest({
        method,
        url,
        headers,
        timeout: CONFIG.requestTimeoutMs,
        onload(response) {
          clearTimeout(timer);
          if (response.status >= 200 && response.status < 300) resolve(response.responseText || "");
          else reject(new Error(`HTTP ${response.status}`));
        },
        onerror(error) {
          clearTimeout(timer);
          reject(error);
        },
        ontimeout() {
          clearTimeout(timer);
          reject(new Error("请求超时"));
        },
      });
    });
  }

  function requestBlobWithHeaders(url, headers = {}, method = "GET", onProgress = null) {
    if (typeof GM_xmlhttpRequest !== "function") {
      throw new Error("GM_xmlhttpRequest unavailable");
    }

    return new Promise((resolve, reject) => {
      const timer = setTimeout(() => reject(new Error("请求超时")), CONFIG.requestTimeoutMs * 8);
      GM_xmlhttpRequest({
        method,
        url,
        headers,
        responseType: "blob",
        timeout: CONFIG.requestTimeoutMs * 8,
        onload(response) {
          clearTimeout(timer);
          const headerText = response.responseHeaders || "";
          if (response.status < 200 || response.status >= 300 || !response.response) {
            reject(new Error(`HTTP ${response.status}`));
            return;
          }
          if (/content-type:\s*text\/html/i.test(headerText)) {
            reject(new Error("Gofile returned HTML instead of video"));
            return;
          }
          resolve(response.response);
        },
        onprogress(event) {
          if (typeof onProgress === "function" && event.lengthComputable) {
            onProgress(event.loaded, event.total);
          }
        },
        onerror(error) {
          clearTimeout(timer);
          reject(error);
        },
        ontimeout() {
          clearTimeout(timer);
          reject(new Error("请求超时"));
        },
      });

    });
  }

  function getMeta(doc, selector) {
    const node = doc.querySelector(selector);
    return node ? node.getAttribute("content") || "" : "";
  }

  function renderResult(item, result) {
    removeExisting(item);

    const hasImages = result.images && result.images.length;
    const hasMedia = result.media && result.media.length;
    const hasHostPages = result.hostPages && result.hostPages.length;

    if (hasHostPages) renderBadge(item, result.hostPages);

    if (hasImages || hasMedia || hasHostPages) {
      const strip = document.createElement("div");
      strip.className = CONFIG.stripClass;
      strip.dataset.spvTid = item.tid;
      strip.addEventListener("scroll", () => updateStripFade(strip), { passive: true });
      if (!hasImages && !hasMedia) strip.classList.add("spv-strip-empty");

      for (const url of result.images || []) appendMedia(strip, { type: "image", url, source: url });
      for (const media of result.media || []) appendMedia(strip, media);

      item.slot.appendChild(strip);
      updateStripFade(strip);

      if (hasHostPages) {
        resolveHostPagesInBackground(strip, result.hostPages);
      }
    }

  }

  function renderBadge(item, hostPages) {
    const badge = document.createElement("a");
    badge.className = CONFIG.badgeClass;
    badge.dataset.spvTid = item.tid;
    badge.href = hostPages[0];
    badge.target = "_blank";
    badge.rel = "noreferrer";
    badge.textContent = `第三方媒体 ${hostPages.length}`;
    item.slot.appendChild(badge);
  }

  function appendMedia(strip, media) {
    if (!media || !media.url) return;

    const link = document.createElement("a");
    link.href = media.source || media.videoUrl || media.url;
    link.target = "_blank";
    link.rel = "noreferrer";
    link.className = media.type === "video" ? "spv-media spv-video" : "spv-media";
    if (media.name) link.title = media.name;
    link.addEventListener("click", (event) => {
      if (event.button || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) return;
      event.preventDefault();
      openLightbox(media);
    });

    if (media.type === "video") {
      if (media.poster) {
        const img = document.createElement("img");
        img.src = media.poster;
        img.loading = "lazy";
        img.referrerPolicy = "no-referrer";
        img.addEventListener("error", () => {
          img.remove();
          appendVideoPlaceholder(link, media);
        });
        link.appendChild(img);
      } else {
        appendVideoPlaceholder(link, media);
      }

      const play = document.createElement("span");
      play.className = "spv-play";
      play.textContent = "▶";
      link.appendChild(play);

      const tag = document.createElement("span");
      tag.className = "spv-kind";
      tag.textContent = "MP4";
      link.appendChild(tag);
    } else {
      const img = document.createElement("img");
      img.src = media.url;
      img.loading = "lazy";
      img.referrerPolicy = "no-referrer";
      img.addEventListener("error", () => {
        link.remove();
        if (!strip.children.length) strip.remove();
        updateStripFade(strip);
      });
      link.appendChild(img);
    }

    strip.appendChild(link);
    strip.classList.remove("spv-strip-empty");
    updateStripFade(strip);
  }

  function appendVideoPlaceholder(link, media) {
    if (link.querySelector(".spv-video-placeholder")) return;

    const placeholder = document.createElement("span");
    placeholder.className = "spv-video-placeholder";
    placeholder.textContent = media.name ? getFileExt(media.name).toUpperCase() || "VIDEO" : "VIDEO";
    link.insertBefore(placeholder, link.firstChild);
  }

  function getFileExt(name) {
    const match = String(name || "").match(/\.([a-z0-9]{2,5})(?:[?#].*)?$/i);
    return match ? match[1] : "";
  }

  async function resolveHostPagesInBackground(strip, hostPages) {
    let added = 0;

    for (const pageUrl of hostPages.slice(0, CONFIG.maxHostPageResolves)) {
      if (!document.contains(strip)) return;
      const mediaList = await resolveHostPageMediaList(pageUrl);

      for (const media of mediaList) {
        if (!media || !media.url) continue;
        if (hasMedia(strip, media.poster || media.url)) continue;
        appendMedia(strip, media);
        added += 1;
        if (strip.children.length >= CONFIG.maxImagesPerThread) break;
      }

      if (strip.children.length >= CONFIG.maxImagesPerThread) break;
    }

    if (!added && !strip.children.length) strip.remove();
    else updateStripFade(strip);
  }

  function hasMedia(strip, url) {
    return Array.from(strip.querySelectorAll("img")).some((img) => img.src === url);
  }

  function openLightbox(media) {
    closeLightbox();

    const overlay = document.createElement("div");
    overlay.className = "spv-lightbox";
    overlay.addEventListener("click", (event) => {
      if (event.target === overlay) closeLightbox();
    });

    const body = document.createElement("div");
    body.className = "spv-lightbox-body";

    const close = document.createElement("button");
    close.type = "button";
    close.className = "spv-close";
    close.textContent = "×";
    close.addEventListener("click", closeLightbox);

    const footer = document.createElement("div");
    footer.className = "spv-lightbox-footer";
    const open = document.createElement("a");
    open.href = media.source || media.videoUrl || media.url;
    open.target = "_blank";
    open.rel = "noreferrer";
    open.textContent = media.type === "video" ? "打开视频" : "打开原图";
    footer.appendChild(open);

    if (media.type === "video") {
      renderLightboxVideo(body, media);
    } else {
      const img = document.createElement("img");
      img.src = media.source || media.url;
      img.referrerPolicy = "no-referrer";
      body.appendChild(img);
    }

    overlay.appendChild(body);
    overlay.appendChild(close);
    overlay.appendChild(footer);
    document.body.appendChild(overlay);
    document.documentElement.classList.add("spv-lightbox-open");
    document.addEventListener("keydown", handleLightboxKey);
  }

  function renderLightboxVideo(body, media) {
    const video = document.createElement("video");
    video.controls = true;
    video.autoplay = true;
    video.muted = true;
    video.playsInline = true;
    video.preload = "auto";
    video.referrerPolicy = "no-referrer";
    if (media.poster) video.poster = media.poster;

    const status = document.createElement("div");
    status.className = "spv-lightbox-status";

    body.appendChild(video);
    body.appendChild(status);

    const videoUrl = media.videoUrl || media.source || media.url;
    if (isGofileDownloadUrl(videoUrl)) {
      status.textContent = "正在加载视频...";
      loadGofileVideoBlob(video, videoUrl, status);
    } else {
      video.src = videoUrl;
      video.play().catch((error) => debugWarn("video play rejected", error));
    }
  }

  function isGofileDownloadUrl(url) {
    return /(?:^|\/\/)[^/]*gofile\.io\/download\/web\//i.test(url || "");
  }

  async function loadGofileVideoBlob(video, videoUrl, status) {
    try {
      const blobUrl = await getGofileVideoBlobUrl(videoUrl, (loaded, total) => {
        if (!document.contains(video)) return;
        const percent = total ? Math.floor((loaded / total) * 100) : 0;
        status.textContent = `正在加载视频... ${percent}%`;
      });
      if (!document.contains(video)) {
        URL.revokeObjectURL(blobUrl);
        return;
      }
      video.dataset.spvBlobUrl = blobUrl;
      video.src = blobUrl;
      status.textContent = "";
      await video.play();
    } catch (error) {
      status.textContent = `视频加载失败: ${error.message || error}`;
      debugWarn("Gofile video blob failed", error);
    }
  }

  function closeLightbox() {
    const overlay = document.querySelector(".spv-lightbox");
    if (overlay) {
      for (const video of overlay.querySelectorAll("video[data-spv-blob-url]")) {
        URL.revokeObjectURL(video.dataset.spvBlobUrl);
      }
      overlay.remove();
    }
    document.documentElement.classList.remove("spv-lightbox-open");
    document.removeEventListener("keydown", handleLightboxKey);
  }

  function handleLightboxKey(event) {
    if (event.key === "Escape") closeLightbox();
  }

  function removeExisting(item) {
    item.slot
      .querySelectorAll(`.${CONFIG.stripClass}[data-spv-tid="${item.tid}"], .${CONFIG.badgeClass}[data-spv-tid="${item.tid}"]`)
      .forEach((node) => node.remove());
  }

  function readCache(tid) {
    try {
      const raw = localStorage.getItem(cacheKey(tid));
      if (!raw) return null;
      const parsed = JSON.parse(raw);
      if (!parsed || Date.now() - parsed.time > CONFIG.cacheTtlMs) {
        localStorage.removeItem(cacheKey(tid));
        return null;
      }
      return parsed.value;
    } catch (error) {
      return null;
    }
  }

  function writeCache(tid, value) {
    try {
      localStorage.setItem(cacheKey(tid), JSON.stringify({ time: Date.now(), value }));
    } catch (error) {
      debugWarn("cache write failed", error);
    }
  }

  function cacheKey(tid) {
    return `spv:thread-media:v4:${tid}`;
  }

  function unique() {
    const seen = new Set();
    return (value) => {
      if (seen.has(value)) return false;
      seen.add(value);
      return true;
    };
  }

  function injectStyle() {
    const style = document.createElement("style");
    style.textContent = `
      .${CONFIG.slotClass}:empty {
        display: none;
      }

      .${CONFIG.slotClass} {
        clear: both;
        display: block;
        width: 0;
        min-width: 100%;
        max-width: 100%;
        overflow: hidden;
      }

      .${CONFIG.stripClass} {
        display: block;
        width: calc(100vw - 420px);
        min-width: 180px;
        max-width: 100%;
        margin: 6px 0 2px;
        padding: 3px 1px 4px;
        overflow-x: auto;
        overflow-y: hidden;
        white-space: nowrap;
        scrollbar-width: none;
        box-sizing: border-box;
        overscroll-behavior-inline: contain;
      }

      .${CONFIG.stripClass}.spv-can-scroll-right {
        -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 34px), transparent);
        mask-image: linear-gradient(to right, #000 calc(100% - 34px), transparent);
      }

      .${CONFIG.stripClass}.spv-strip-empty {
        display: none;
      }

      .${CONFIG.stripClass}::-webkit-scrollbar {
        display: none;
      }

      .spv-media {
        position: relative;
        display: inline-block;
        width: 92px;
        height: 68px;
        margin-right: 6px;
        border: 1px solid rgba(0, 0, 0, 0.12);
        border-radius: 5px;
        background: #f4f5f7;
        box-sizing: border-box;
        vertical-align: top;
        overflow: hidden;
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
        transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
      }

      .spv-media:hover {
        border-color: rgba(28, 105, 190, 0.48);
        box-shadow: 0 3px 8px rgba(0, 0, 0, 0.16);
        transform: translateY(-1px);
      }

      .spv-media img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
      }

      .spv-video-placeholder {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, #252a31, #111418);
        color: rgba(255, 255, 255, 0.78);
        font-size: 12px;
        font-weight: 600;
        letter-spacing: 0;
      }

      .spv-play {
        position: absolute;
        left: 50%;
        top: 50%;
        width: 26px;
        height: 26px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.74);
        background: rgba(0, 0, 0, 0.55);
        color: #fff;
        font-size: 12px;
        line-height: 26px;
        text-align: center;
        transform: translate(-50%, -50%);
        pointer-events: none;
        box-shadow: 0 1px 5px rgba(0, 0, 0, 0.35);
      }

      .spv-kind {
        position: absolute;
        right: 3px;
        bottom: 3px;
        padding: 0 4px;
        border-radius: 3px;
        background: rgba(0, 0, 0, 0.66);
        color: #fff;
        font-size: 10px;
        line-height: 15px;
        pointer-events: none;
      }

      .${CONFIG.badgeClass} {
        display: inline-block;
        margin: 5px 0 1px;
        padding: 2px 7px;
        border: 1px solid rgba(0, 0, 0, 0.14);
        border-radius: 4px;
        background: linear-gradient(#fff, #f3f5f7);
        color: #58606a;
        font-size: 12px;
        line-height: 1.6;
        text-decoration: none;
        vertical-align: top;
        box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
      }

      .${CONFIG.badgeClass}:hover {
        color: #2f5f9d;
        border-color: rgba(47, 95, 157, 0.38);
        background: #fff;
      }

      .spv-lightbox {
        position: fixed;
        inset: 0;
        z-index: 100000;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 38px 44px;
        background: rgba(0, 0, 0, 0.72);
        box-sizing: border-box;
      }

      html.spv-lightbox-open,
      html.spv-lightbox-open body {
        overflow: hidden !important;
      }

      .spv-lightbox-body {
        position: relative;
        max-width: min(86vw, 1180px);
        max-height: min(82vh, 820px);
        border-radius: 7px;
        overflow: hidden;
        background: #111;
        box-shadow: 0 18px 52px rgba(0, 0, 0, 0.42);
      }

      .spv-lightbox-body img,
      .spv-lightbox-body video {
        display: block;
        max-width: min(86vw, 1180px);
        max-height: min(82vh, 820px);
        width: auto;
        height: auto;
        object-fit: contain;
      }

      .spv-lightbox-status {
        position: absolute;
        left: 50%;
        top: 50%;
        max-width: 70%;
        padding: 7px 10px;
        border-radius: 4px;
        background: rgba(0, 0, 0, 0.58);
        color: #fff;
        font-size: 13px;
        line-height: 1.5;
        text-align: center;
        transform: translate(-50%, -50%);
        pointer-events: none;
      }

      .spv-lightbox-status:empty {
        display: none;
      }

      .spv-close {
        position: fixed;
        right: 22px;
        top: 18px;
        width: 34px;
        height: 34px;
        border: 0;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.14);
        color: #fff;
        font-size: 24px;
        line-height: 32px;
        cursor: pointer;
      }

      .spv-close:hover {
        background: rgba(255, 255, 255, 0.24);
      }

      .spv-lightbox-footer {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 18px;
        text-align: center;
        pointer-events: none;
      }

      .spv-lightbox-footer a {
        display: inline-block;
        padding: 5px 10px;
        border-radius: 4px;
        background: rgba(255, 255, 255, 0.16);
        color: #fff;
        font-size: 12px;
        line-height: 1.5;
        text-decoration: none;
        pointer-events: auto;
      }

      .spv-lightbox-footer a:hover {
        background: rgba(255, 255, 255, 0.26);
      }

    `;
    document.head.appendChild(style);
  }
})();