// ==UserScript==
// @name         Chaturbate 缩略图放大 2 倍
// @namespace    https://chaturbate.com/
// @version      0.1.1
// @description  将房间列表缩略图按宽高 2 倍放大
// @match        https://chaturbate.com/*
// @match        https://*.chaturbate.com/*
// @run-at       document-start
// @grant        none
// ==/UserScript==

(function () {
  "use strict";

  // ========== 配置项 ==========
  // 放大倍数（宽度和高度都会按此倍数放大）
  const SCALE = 1.5;
  
  // 调试开关（true: 输出调试信息，false: 静默运行）
  const DEBUG = false;
  // ===========================

  // ========== 内部常量 ==========
  const SCALED_ATTR = "data-tm-scaled";
  const BASE_W_ATTR = "data-tm-base-w";
  const BASE_H_ATTR = "data-tm-base-h";
  // ===========================

  // 提前注入 CSS，避免闪烁
  const injectCSS = () => {
    const style = document.createElement("style");
    style.id = "tm-thumb-scale-style";
    const css = `
      img.room_thumbnail:not([${SCALED_ATTR}="1"]) {
        opacity: 0;
        transition: opacity 0.1s;
      }
      img.room_thumbnail[${SCALED_ATTR}="1"] {
        opacity: 1;
      }
      ul.list,
      ul.list.endless_page_template {
        display: flex !important;
        flex-wrap: wrap !important;
        gap: 0 !important;
      }
    `;
    
    style.textContent = css;
    const inject = () => {
      if (!document.getElementById("tm-thumb-scale-style")) {
        (document.head || document.documentElement).appendChild(style);
      }
    };
    if (document.head) {
      inject();
    } else {
      document.addEventListener("DOMContentLoaded", inject);
    }
  };
  injectCSS();

  const relaxKnownOuter = () => {
    // 确保列表容器能容纳更大的卡片
    document.querySelectorAll("ul.list, ul.list.endless_page_template").forEach((el) => {
      el.style.width = "100%";
      el.style.maxWidth = "none";
      el.style.boxSizing = "border-box";
      el.style.overflow = "visible";
    });
  };

  const scale = () => {
    if (DEBUG) console.log("[tm] running on", location.href);
    relaxKnownOuter();
    const items = document.querySelectorAll("a.room_thumbnail_container");
    if (DEBUG) console.log("[tm] containers:", items.length);
    items.forEach((container) => {
      const img = container.querySelector("img.room_thumbnail");
      if (DEBUG && !img) console.log("[tm] no img in container", container);
      if (!img) return;

      const attrW = parseFloat(img.getAttribute("width"));
      const attrH = parseFloat(img.getAttribute("height"));
      const baseW = parseFloat(img.getAttribute(BASE_W_ATTR)) || attrW;
      const baseH = parseFloat(img.getAttribute(BASE_H_ATTR)) || attrH;
      if (!baseW || !baseH) return;

      if (!img.getAttribute(BASE_W_ATTR) || !img.getAttribute(BASE_H_ATTR)) {
        img.setAttribute(BASE_W_ATTR, String(baseW));
        img.setAttribute(BASE_H_ATTR, String(baseH));
      }

      const scaledW = baseW * SCALE;
      const scaledH = baseH * SCALE;
      if (DEBUG) console.log("[tm] img size:", baseW, baseH, img);

      img.setAttribute("width", String(scaledW));
      img.setAttribute("height", String(scaledH));
      img.setAttribute(SCALED_ATTR, "1");
      img.style.width = `${scaledW}px`;
      img.style.height = `${scaledH}px`;
      img.style.maxWidth = "none";
      img.style.maxHeight = "none";
      img.style.display = "block";
      img.style.opacity = "1";

      container.style.width = `${scaledW}px`;
      container.style.height = `${scaledH}px`;
      container.style.minWidth = `${scaledW}px`;
      container.style.maxWidth = `${scaledW}px`;
      container.style.minHeight = `${scaledH}px`;
      container.style.overflow = "visible";
      container.style.display = "block";
      container.style.boxSizing = "border-box";
      container.style.flexShrink = "0";

      const card = container.closest("li.roomCard");
      if (card) {
        card.style.width = `${scaledW}px`;
        card.style.minWidth = `${scaledW}px`;
        card.style.maxWidth = `${scaledW}px`;
        card.style.minHeight = `${scaledH}px`;
        card.style.height = "auto";
        card.style.overflow = "visible";
        card.style.flexShrink = "0";
        card.style.flexGrow = "0";
        card.style.flexBasis = `${scaledW}px`;
        card.style.boxSizing = "border-box";
      }
    });
  };

  const init = () => {
    if (DEBUG) {
      const thumbs = document.querySelectorAll("img.room_thumbnail");
      console.log("[tm] thumbnails:", thumbs.length, Array.from(thumbs));
    }
    scale();
  };

  // 立即执行（如果 DOM 已就绪）
  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", init);
  } else {
    init();
  }

  // 延迟重试，处理动态加载
  window.setTimeout(scale, 100);
  window.setTimeout(scale, 300);
  window.setTimeout(scale, 600);
  window.setTimeout(scale, 1000);
  window.setTimeout(scale, 2000);

  // MutationObserver 监听动态添加的内容
  const observer = new MutationObserver((mutations) => {
    for (const mutation of mutations) {
      for (const node of mutation.addedNodes) {
        if (node.nodeType === 1 && (
          node.matches?.("a.room_thumbnail_container, li.roomCard") ||
          node.querySelector?.("a.room_thumbnail_container")
        )) {
          if (DEBUG) console.log("[tm] new content detected, scaling...");
          scale();
          return;
        }
      }
    }
  });

  // 开始观察
  const startObserving = () => {
    const target = document.body || document.documentElement;
    if (target) {
      observer.observe(target, { childList: true, subtree: true });
      if (DEBUG) console.log("[tm] MutationObserver started");
    }
  };
  if (document.body) {
    startObserving();
  } else {
    document.addEventListener("DOMContentLoaded", startObserving);
  }
})();