const assert = require("node:assert/strict");
const fs = require("node:fs");
const vm = require("node:vm");

const source = fs.readFileSync("Chaturbate/chaturbate-thumbnails-2x.user.js", "utf8");
let capturedCss = "";
let gmAddStyleCalls = 0;
let menuCommandName = "";
let appendedStyle = null;
let observedTarget = null;
let domContentLoadedHandler = null;
const fakeElement = {
  id: "",
  textContent: "",
  setAttribute() {},
};
const fakeDocument = {
  documentElement: {
    setAttribute() {},
  },
  head: {
    appendChild(node) {
      appendedStyle = node;
    },
  },
  createElement() {
    return fakeElement;
  },
  getElementById() {
    return null;
  },
  addEventListener(type, handler) {
    if (type === "DOMContentLoaded") {
      domContentLoadedHandler = handler;
    }
  },
};

vm.runInNewContext(source, {
  console,
  document: fakeDocument,
  GM_addStyle(css) {
    gmAddStyleCalls += 1;
    capturedCss = css;
    return fakeElement;
  },
  GM_registerMenuCommand(name) {
    menuCommandName = name;
  },
  MutationObserver: class {
    observe(target) {
      observedTarget = target;
    }
  },
});

if (!capturedCss && appendedStyle) {
  capturedCss = appendedStyle.textContent;
}

assert.equal(gmAddStyleCalls, 1, "script should use GM_addStyle for stable Tampermonkey injection");
assert.equal(menuCommandName, "清除 Chaturbate 缩略图探测缓存", "script should expose a Tampermonkey cache-clear menu command");
assert.equal(appendedStyle, null, "script should not manually append a duplicate style when GM_addStyle succeeds");
assert.equal(fakeElement.id, "tm-thumb-scale-style");
assert.equal(observedTarget, fakeDocument.head, "style reinjection observer should watch document.head only");
assert.equal(domContentLoadedHandler, null, "script should not add extra DOMContentLoaded work when head already exists");
assert.match(
  capturedCss,
  /\.FollowedDropdown__rooms\s*(?:,|\{)/,
  "followed dropdown rooms grid should be resized",
);
assert.match(
  capturedCss,
  /\.FollowedDropdown__room-image\s*(?:,|\{)/,
  "followed dropdown preview images should fill enlarged cards",
);
assert.match(
  capturedCss,
  /#roomlist_root\s+ul\.list:has\(li\.roomCard\)/,
  "current homepage room lists should be enlarged",
);
assert.match(
  capturedCss,
  /#roomlist_root\s+ul\.RoomCardGrid/,
  "current homepage RoomCardGrid lists should also be enlarged",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-following-list="1"[\s\S]*--tm-thumb-following-list-min-width/,
  "followed-cams list should use its own detected minimum column width",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-following-list="1"[\s\S]*grid-template-columns:\s*repeat\(auto-fill,\s*minmax\(var\(--tm-thumb-following-list-min-width\),\s*1fr\)\)\s*!important/,
  "followed-cams list should reduce columns responsively using scaled minimum width",
);
assert.match(
  capturedCss,
  /#main\.roomPage\s+ul\.list:has\(li\.roomCard\)\s+\.room_thumbnail_container[\s\S]*width:\s*100%\s*!important[\s\S]*height:\s*auto\s*!important/,
  "room page related rooms thumbnail containers should follow card width and automatic height",
);
assert.match(
  capturedCss,
  /\.BaseRoomContents\s+ul\.list:has\(li\.roomCard\)\s+\.room_thumbnail[\s\S]*width:\s*100%\s*!important[\s\S]*height:\s*auto\s*!important/,
  "base room related thumbnails should follow card width and automatic height",
);
assert.match(
  capturedCss,
  /\.BaseRoomContents\s+ul\.RoomCardGrid[\s\S]*grid-template-columns:\s*repeat\(auto-fill,\s*minmax\(var\(--tm-thumb-related-width\),\s*1fr\)\)\s*!important/,
  "base room RoomCardGrid related rooms should fill the row using detected scaled minimum width",
);
assert.match(
  capturedCss,
  /\.BaseRoomContents\s+ul\.RoomCardGrid\s+\.RoomCardThumbnail[\s\S]*width:\s*100%\s*!important[\s\S]*height:\s*auto\s*!important/,
  "base room RoomCardGrid thumbnails should follow card width and automatic height",
);
assert.match(
  capturedCss,
  /\.BaseRoomContents\s+ul\.RoomCardGrid\s*>\s*li\.RoomCard[\s\S]*height:\s*auto\s*!important[\s\S]*max-height:\s*none\s*!important/,
  "base room RoomCardGrid related cards should use automatic height",
);
assert.match(
  capturedCss,
  /\.BaseRoomContents\s+ul\.RoomCardGrid\s*>\s*li\.RoomCard[\s\S]*width:\s*auto\s*!important[\s\S]*justify-self:\s*stretch\s*!important[\s\S]*max-width:\s*none\s*!important/,
  "base room RoomCardGrid related cards should stretch to fill responsive columns",
);
assert.doesNotMatch(capturedCss, /--tm-thumb-min-root:\s*\d+px;/, "script should not hard-code a root thumbnail fallback width");
assert.doesNotMatch(capturedCss, /--tm-thumb-height-root:\s*\d+px;/, "script should not hard-code a root thumbnail fallback height");
assert.match(
  capturedCss,
  /\.carousel-root\s+\.room-list-carousel\s+ul\.list\s*>\s*li/,
  "discover carousel ul.list items should be enlarged",
);
assert.match(
  capturedCss,
  /#discover_root\s+\.room-list-carousel\s+\.room_thumbnail_container\s+img/,
  "discover carousel thumbnail images should fill enlarged items",
);
assert.match(
  capturedCss,
  /#discover_root\s+\.room-list-carousel\s+\.room_thumbnail_container[\s\S]*height:\s*var\(--tm-thumb-discover-height\)\s*!important/,
  "discover carousel thumbnail containers should use detected scaled height",
);
assert.match(
  capturedCss,
  /height:\s*var\(--tm-thumb-discover-triple-ul\)\s*!important/,
  "discover carousel container heights should use detected original heights",
);
assert.match(
  capturedCss,
  /height:\s*var\(--tm-thumb-discover-double-arrow\)\s*!important/,
  "discover carousel arrow heights should use detected original heights",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-followed-page="1"[\s\S]*\.carousel-root\s+\.single-row\s+ul\.list[\s\S]*height:\s*auto\s*!important[\s\S]*max-height:\s*none\s*!important[\s\S]*overflow:\s*visible\s*!important/,
  "followed-cams recommendations should release carousel list height after scaling",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-followed-page="1"[\s\S]*grid-template-columns:\s*repeat\(auto-fill,\s*minmax\(var\(--tm-thumb-discover-width\),\s*1fr\)\)\s*!important/,
  "followed-cams legacy recommendations should use responsive scaled minimum width",
);
assert.doesNotMatch(
  capturedCss,
  /data-tm-thumb-scale-followed-page="1"[\s\S]*grid-template-columns:\s*repeat\(2,/,
  "followed-cams recommendations should not force a hard-coded two-column layout",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-followed-recommendations="1"[\s\S]*data-tm-thumb-followed-recommendations-list="1"[\s\S]*grid-template-columns:\s*repeat\(auto-fill,\s*minmax\(var\(--tm-thumb-followed-recommendations-width\),\s*1fr\)\)\s*!important[\s\S]*grid-auto-rows:\s*auto\s*!important/,
  "title-detected followed recommendations should use responsive scaled minimum columns and automatic row height",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-followed-recommendations="1"[\s\S]*data-tm-thumb-followed-recommendations-card="1"[\s\S]*width:\s*auto\s*!important[\s\S]*max-width:\s*none\s*!important[\s\S]*height:\s*auto\s*!important[\s\S]*max-height:\s*none\s*!important/,
  "title-detected followed recommendation cards should stretch responsively and grow naturally",
);
assert.match(
  capturedCss,
  /data-tm-thumb-scale-followed-recommendations="1"[\s\S]*data-tm-thumb-followed-recommendations-thumb="1"[\s\S]*height:\s*auto\s*!important/,
  "title-detected followed recommendation thumbnails should keep automatic height",
);
assert.match(
  capturedCss,
  /#discover_root\s+\.room-list-carousel\s+\.room_thumbnail[\s\S]*height:\s*var\(--tm-thumb-discover-height\)\s*!important/,
  "discover carousel images should use detected original height",
);
assert.match(
  capturedCss,
  /#discover_root\s+\.room-list-carousel\s+\.room_thumbnail[\s\S]*width:\s*var\(--tm-thumb-discover-thumb-width\)\s*!important/,
  "discover carousel images should use detected original thumb width",
);
assert.match(
  capturedCss,
  /\.FollowedDropdown__room-image[\s\S]*width:\s*100%\s*!important[\s\S]*height:\s*var\(--tm-thumb-follow-thumb-height\)\s*!important/,
  "follow dropdown images should follow fixed card width and use detected height",
);
assert.match(
  capturedCss,
  /react-tooltip[\s\S]*width:\s*var\(--tm-thumb-tooltip-width\)\s*!important[\s\S]*height:\s*var\(--tm-thumb-tooltip-height\)\s*!important/,
  "tooltip preview should use detected original image width and height",
);
assert.match(
  capturedCss,
  /#discover_root\s+\.room-list-carousel\s+ul\.list\s*>\s*li[\s\S]*height:\s*var\(--tm-thumb-discover-card-height\)\s*!important/,
  "discover carousel cards should use detected original card height",
);
assert.doesNotMatch(source, /withOwnStyleDisabled/, "script should not disable its own style while measuring");
assert.match(source, /detectAndApplySizes/, "script should detect original sizes before applying scaled variables");
assert.match(source, /moduleReady/, "script should lock each module after detecting its original size");
assert.match(source, /CARD_HEIGHT_SCALE/, "script should use a separate scale for card heights");
assert.match(source, /setCardHeightVar/, "script should apply card height scaling separately from thumbnail scaling");
assert.match(source, /setDiscoverStackHeightVars/, "discover carousel stack heights should be derived from scaled card rows");
assert.match(source, /setCardHeightFromThumbVar\("--tm-thumb-discover-card-height"/, "discover card height should scale the thumbnail area and keep metadata height");
assert.match(source, /stackHeight == null\) return true/, "discover should not require every carousel row type to exist before enabling");
assert.match(source, /TAG_TRANSLATIONS/, "script should include a centralized tag translation table");
assert.match(source, /translateTagsPage/, "script should translate the Chaturbate tags page");
assert.doesNotMatch(source, /localStorage\.setItem/, "script should not write detected sizes to localStorage");
assert.match(source, /LEGACY_CACHE_PREFIX/, "script should only keep legacy cache cleanup support");
assert.match(source, /scheduleMeasure\("after-800ms"\)/, "script should delay the first page measurement until original layout can render");
assert.doesNotMatch(
  capturedCss,
  /#desktop-spa-header\s*>\s*div\s*>\s*nav:nth-child/,
  "script should avoid brittle header child-index selectors",
);
assert.doesNotMatch(capturedCss, /\.followedDropdown\b/, "old lowercase followed dropdown selectors should be removed");

const earlySource = source;
let earlyAppendedTarget = null;
let earlyDomContentLoadedHandler = null;
let earlyObservedTarget = null;
const earlyFakeDocument = {
  documentElement: {
    appendChild(node) {
      earlyAppendedTarget = "documentElement";
      this.node = node;
    },
    setAttribute() {},
  },
  head: null,
  createElement() {
    return { id: "", textContent: "", setAttribute() {} };
  },
  getElementById() {
    return null;
  },
  addEventListener(type, handler) {
    if (type === "DOMContentLoaded") {
      earlyDomContentLoadedHandler = handler;
    }
  },
};

vm.runInNewContext(earlySource, {
  console,
  document: earlyFakeDocument,
  GM_addStyle() {
    return { id: "", textContent: "", setAttribute() {} };
  },
  GM_registerMenuCommand() {},
  MutationObserver: class {
    observe(target) {
      earlyObservedTarget = target;
    }
  },
});

assert.equal(earlyAppendedTarget, null, "GM_addStyle should avoid manual documentElement injection before head exists");
assert.equal(typeof earlyDomContentLoadedHandler, "function", "script should reinject after head becomes available");
assert.equal(earlyObservedTarget, null, "script should not observe a missing head");

const tagAnchors = [
  {
    href: "https://zh-hans.chaturbate.com/tag/asian/",
    textContent: "#asian",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tag/bigboobs/",
    textContent: "#bigboobs",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tag/ebony/female/",
    textContent: "#ebony",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tag/not-in-table/",
    textContent: "Not In Table",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tag/new-custom-tag/",
    textContent: "#new-custom-tag",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tag/colombiana/female/",
    textContent: "#colombiana",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tag/untranslated-example/",
    textContent: "#untranslated-example",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
  {
    href: "https://zh-hans.chaturbate.com/tags/female/?page=2",
    textContent: "2",
    dataset: {},
    title: "",
    getAttribute(name) {
      return name === "href" ? this.href : "";
    },
  },
];
const tagFakeDocument = {
  documentElement: {
    setAttribute() {},
  },
  head: {
    appendChild() {},
  },
  body: {},
  createElement() {
    return { id: "", textContent: "", setAttribute() {} };
  },
  getElementById() {
    return null;
  },
  querySelectorAll(selector) {
    return selector.includes("/tag") ? tagAnchors : [];
  },
  addEventListener() {},
};

const runTagsPageTranslationTest = (pathname = "/tags/") => vm.runInNewContext(source, {
  console,
  document: tagFakeDocument,
  location: {
    href: `https://zh-hans.chaturbate.com${pathname}`,
    pathname,
  },
  URL,
  GM_addStyle() {
    return { id: "", textContent: "", setAttribute() {} };
  },
  GM_registerMenuCommand() {},
  MutationObserver: class {
    observe() {}
  },
});

runTagsPageTranslationTest();

assert.equal(tagAnchors[0].textContent, "亚洲", "tags page should translate known tag link text");
assert.equal(tagAnchors[0].dataset.tmTagOriginal, "#asian", "translated tags should keep the original label in dataset");
assert.equal(tagAnchors[0].title, "#asian", "translated tags should expose the original label in title");
assert.equal(tagAnchors[1].textContent, "大胸", "tags page should translate compact multi-word tag slugs");
assert.equal(tagAnchors[2].textContent, "黑人", "gender-scoped tag links should translate by the first slug segment");
assert.equal(tagAnchors[3].textContent, "Not In Table", "unknown tags should remain unchanged");
assert.equal(tagAnchors[4].textContent, "新自定义标签", "untranslated hashtag-style tags should use slug word translation");
assert.equal(tagAnchors[5].textContent, "哥伦比亚女性", "known gendered nationality tags should be translated");
assert.equal(tagAnchors[6].textContent, "#untranslated-example", "untranslated hashtag-style tags should keep the original slug");
assert.equal(tagAnchors[7].textContent, "2", "tags pagination links should not be translated");

tagAnchors.forEach((anchor, index) => {
  anchor.textContent = ["#asian", "#bigboobs", "#ebony", "Not In Table", "#new-custom-tag", "#colombiana", "#untranslated-example", "2"][index];
  anchor.dataset = {};
  anchor.title = "";
});

runTagsPageTranslationTest("/tags/female/");
assert.equal(tagAnchors[0].textContent, "亚洲", "tag category pages under /tags/ should also translate links");
assert.equal(tagAnchors[1].textContent, "大胸", "tag category pages should translate compact slugs too");
assert.equal(tagAnchors[2].textContent, "黑人", "tag category pages should translate /tag/slug/gender/ links");
assert.equal(tagAnchors[5].textContent, "哥伦比亚女性", "tag category pages should translate gendered nationality links");
assert.equal(tagAnchors[6].textContent, "#untranslated-example", "tag category pages should preserve unknown hashtag-style tags");
assert.equal(tagAnchors[7].textContent, "2", "tag category page pagination should keep page numbers");

const followingVars = new Map();
const followingAttrs = new Map();
const followingFakeDocument = {
  documentElement: {
    style: {
      setProperty(name, value) {
        followingVars.set(name, value);
      },
    },
    setAttribute(name, value) {
      followingAttrs.set(name, value);
    },
    removeAttribute(name) {
      followingAttrs.delete(name);
    },
  },
  head: {},
  body: {},
  createElement() {
    return { id: "", textContent: "", setAttribute() {} };
  },
  getElementById() {
    return null;
  },
  querySelectorAll() {
    return [];
  },
  addEventListener() {},
};

vm.runInNewContext(source, {
  console,
  document: followingFakeDocument,
  location: { pathname: "/followed-cams/" },
  localStorage: {
    getItem() {
      return JSON.stringify({
        schema: 15,
        scale: 2,
        cardHeightScale: 1.55,
        modules: {
          home: {
            homeMinWidth: 190,
            homeCard: { width: 174, height: 120 },
            homeThumb: { width: 174, height: 98 },
          },
          followingList: {
            followingListMinWidth: 190,
            followingListCard: { width: 190, height: 120 },
            followingListThumb: { width: 188, height: 106 },
          },
        },
      });
    },
    setItem() {},
    removeItem() {},
  },
  getComputedStyle() {
    return {
      getPropertyValue(name) {
        return followingVars.get(name) || "";
      },
    };
  },
  GM_addStyle() {
    return { id: "", textContent: "", setAttribute() {} };
  },
  GM_registerMenuCommand() {},
  MutationObserver: class {
    observe() {}
  },
});

assert.equal(followingAttrs.get("data-tm-thumb-scale-following-list"), undefined, "followed-cams should not apply legacy cached list module");
assert.equal(followingAttrs.get("data-tm-thumb-scale-home"), undefined, "followed-cams should not apply legacy homepage cache");
assert.equal(followingVars.get("--tm-thumb-following-list-min-width"), undefined);
assert.equal(followingVars.get("--tm-thumb-following-list-card-height"), undefined);
assert.equal(followingVars.get("--tm-thumb-following-list-thumb-width"), undefined);
assert.equal(followingVars.get("--tm-thumb-following-list-thumb-height"), undefined);
assert.equal(followingVars.get("--tm-thumb-home-min-width"), undefined);