---
import { getCollection, render } from "astro:content";
import { getSpecialPath } from "@/content.config";
import Layout from "@/components/Layout.astro";
import Breadcrumb from "@/components/Breadcrumb.astro";
import { ARTICLE_EXPIRY_CONFIG } from "@/consts";
import "@/styles/content-styles.css";

// 定义文章类型
interface ArticleEntry {
  id: string;
  data: {
    title: string;
    date: Date;
    tags?: string[];
    summary?: string;
  };
}

// 定义标题类型
interface Heading {
  depth: number;
  slug: string;
  text: string;
}

export async function getStaticPaths() {
  const articles = await getCollection("articles");

  // 为每篇文章生成路由参数
  const paths = [];
  for (const article of articles) {
    // 获取所有可能的路径形式
    const possiblePaths = new Set([
      article.id, // 只保留原始路径
    ]);

    // 如果是多级目录，检查是否需要特殊处理
    if (article.id.includes("/")) {
      const parts = article.id.split("/");
      const fileName = parts[parts.length - 1];
      const dirName = parts[parts.length - 2];

      // 只有当文件名与其父目录名相同时才添加特殊路径
      if (fileName === dirName) {
        possiblePaths.add(getSpecialPath(article.id));
      }
    }

    // 为每个可能的路径生成路由
    for (const path of possiblePaths) {
      paths.push({
        params: { id: path },
        props: {
          article,
          section: article.id.includes("/")
            ? article.id.split("/").slice(0, -1).join("/")
            : "",
          originalId: path !== article.id ? article.id : undefined,
        },
      });
    }
  }

  return paths;
}

// 获取文章内容
const { article, section, originalId } = Astro.props;

// 获取搜索参数
const searchParams = new URLSearchParams(Astro.url.search);

// 如果有原始ID，使用它来渲染内容
const articleToRender = originalId ? { ...article, id: originalId } : article;

// 渲染文章内容
const { Content, headings } = await render(articleToRender);

// 获取面包屑路径段
const pathSegments = section ? section.split("/") : [];

// 获取相关文章
const allArticles = await getCollection("articles");

// 1. 尝试通过标签匹配相关文章
let relatedArticles = allArticles
  .filter((a: ArticleEntry) => {
    const hasCommonTags =
      a.id !== article.id &&
      a.data.tags &&
      article.data.tags &&
      a.data.tags.length > 0 &&
      article.data.tags.length > 0 &&
      a.data.tags.some((tag: string) => article.data.tags?.includes(tag));

    return hasCommonTags;
  })
  .sort((a: ArticleEntry, b: ArticleEntry) => b.data.date.getTime() - a.data.date.getTime())
  .slice(0, 3);

// 跟踪相关文章的匹配方式: "tag", "directory", "latest"
let relatedArticlesMatchType = relatedArticles.length > 0 ? "tag" : "";

// 2. 如果标签匹配没有找到足够的相关文章，尝试根据目录结构匹配
if (relatedArticles.length < 3) {
  // 获取当前文章的目录路径
  const currentPath = article.id.includes("/")
    ? article.id.substring(0, article.id.lastIndexOf("/"))
    : "";

  // 如果有目录路径，查找同目录的其他文章
  if (currentPath) {
    // 收集同目录下的文章，但排除已经通过标签匹配的和当前文章
    const dirRelatedArticles = allArticles
      .filter(
        (a: ArticleEntry) =>
          a.id !== article.id &&
          a.id.startsWith(currentPath + "/") &&
          !relatedArticles.some((r: ArticleEntry) => r.id === a.id),
      )
      .sort((a: ArticleEntry, b: ArticleEntry) => b.data.date.getTime() - a.data.date.getTime())
      .slice(0, 3 - relatedArticles.length);

    if (dirRelatedArticles.length > 0) {
      relatedArticles = [...relatedArticles, ...dirRelatedArticles];
      relatedArticlesMatchType =
        relatedArticles.length > 0 && !relatedArticlesMatchType
          ? "directory"
          : relatedArticlesMatchType;
    }
  }
}

// 3. 如果仍然没有找到足够的相关文章，则选择最新的文章（排除当前文章和已选择的文章）
if (relatedArticles.length < 3) {
  const latestArticles = allArticles
    .filter(
      (a: ArticleEntry) => a.id !== article.id && !relatedArticles.some((r: ArticleEntry) => r.id === a.id),
    )
    .sort((a: ArticleEntry, b: ArticleEntry) => b.data.date.getTime() - a.data.date.getTime())
    .slice(0, 3 - relatedArticles.length);

  if (latestArticles.length > 0) {
    relatedArticles = [...relatedArticles, ...latestArticles];
    relatedArticlesMatchType =
      relatedArticles.length > 0 && !relatedArticlesMatchType
        ? "latest"
        : relatedArticlesMatchType;
  }
}

// 准备文章描述
const description =
  article.data.summary ||
  `${article.data.title} - 发布于 ${article.data.date.toLocaleDateString("zh-CN")}`;

// 处理特殊ID的函数
function getArticleUrl(articleId: string) {
  return `/articles/${getSpecialPath(articleId)}${searchParams.toString() ? `?${searchParams.toString()}` : ""}`;
}

// 预先生成目录结构
function generateTableOfContents(headings: Heading[]) {
  if (!headings || headings.length === 0) {
    return '<p class="text-secondary-500 dark:text-secondary-400 italic">此文章没有目录</p>';
  }
  
  // 查找最低级别的标题（数值最小）
  const minDepth = Math.min(...headings.map(h => h.depth));
  
  let tocHtml = '<ul class="space-y-2">';
  
  headings.forEach((heading) => {
    // 计算相对缩进，以最小深度为基准
    const relativeDepth = heading.depth - minDepth;
    const indent = relativeDepth * 0.75;
    
    // 基于相对深度而非绝对深度决定样式
    const isHigherLevel = relativeDepth <= 1; // 仅最高级和次高级标题使用较重的样式
    
    tocHtml += `<li>
      <a href="#${heading.slug}" 
         class="block hover:text-primary-600 dark:hover:text-primary-400 duration-50 ${
           isHigherLevel
             ? "text-secondary-800 dark:text-secondary-200 font-medium"
             : "text-secondary-600 dark:text-secondary-400"
         }"
         style="padding-left: ${indent}rem;">
        ${heading.text}
      </a>
    </li>`;
  });
  
  tocHtml += '</ul>';
  return tocHtml;
}

// 生成目录HTML
const tableOfContents = generateTableOfContents(headings);
---

<Layout
  title={article.data.title}
  description={description}
  date={article.data.date}
  tags={article.data.tags}
  skipSrTitle={false}
  pageType="article"
>
  <div class="max-w-5xl py-8">
    <!-- 阅读进度条 -->
    <div
      class="fixed top-0 left-0 w-full h-1 bg-transparent z-50"
      id="progress-container"
    >
      <div
        class="h-full w-0 bg-primary-500 transition-width duration-100"
        id="progress-bar"
      >
      </div>
    </div>

    <!-- 文章头部 -->
    <header class="mb-8">
      <!-- 导航区域 -->
      <div
        class="bg-white dark:bg-gray-800 rounded-xl p-4 mb-6 shadow-lg border border-gray-200 dark:border-gray-700 relative z-10"
      >
        <div
          class="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-3"
        >
          <div class="w-full overflow-hidden">
            <Breadcrumb
              pageType="article"
              pathSegments={pathSegments}
              searchParams={searchParams}
              articleTitle={article.data.title}
              path={section}
            />
          </div>
        </div>
      </div>

      <!-- 文章过期提醒 -->
      {
        (() => {
          const publishDate = article.data.date;
          const currentDate = new Date();
          const daysDiff = Math.floor(
            (currentDate.getTime() - publishDate.getTime()) /
              (1000 * 60 * 60 * 24),
          );

          if (
            ARTICLE_EXPIRY_CONFIG.enabled &&
            daysDiff > ARTICLE_EXPIRY_CONFIG.expiryDays
          ) {
            return (
              <div class="bg-yellow-50 border-l-4 border-yellow-400 p-4 mb-4">
                <div class="flex">
                  <div class="flex-shrink-0">
                    <svg
                      class="h-5 w-5 text-yellow-400"
                      viewBox="0 0 20 20"
                      fill="currentColor"
                    >
                      <path
                        fill-rule="evenodd"
                        d="M8.257 3.099c.765-1.36 2.722-1.36 3.486 0l5.58 9.92c.75 1.334-.213 2.98-1.742 2.98H4.42c-1.53 0-2.493-1.646-1.743-2.98l5.58-9.92zM11 13a1 1 0 11-2 0 1 1 0 012 0zm-1-8a1 1 0 00-1 1v3a1 1 0 002 0V6a1 1 0 00-1-1z"
                        clip-rule="evenodd"
                      />
                    </svg>
                  </div>
                  <div class="ml-3">
                    <p class="text-sm text-yellow-700">
                      {ARTICLE_EXPIRY_CONFIG.warningMessage}
                    </p>
                  </div>
                </div>
              </div>
            );
          }
          return null;
        })()
      }

      <h1 class="text-3xl font-bold mb-4 text-gray-900 dark:text-gray-100">
        {article.data.title}
      </h1>

      <div
        class="flex flex-wrap items-center gap-4 text-sm text-secondary-600 dark:text-secondary-400 mb-4"
      >
        <time
          datetime={article.data.date.toISOString()}
          class="flex items-center"
        >
          <svg
            xmlns="http://www.w3.org/2000/svg"
            class="h-4 w-4 mr-1"
            fill="none"
            viewBox="0 0 24 24"
            stroke="currentColor"
          >
            <path
              stroke-linecap="round"
              stroke-linejoin="round"
              stroke-width="2"
              d="M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z"
            ></path>
          </svg>
          {article.data.date.toLocaleDateString("zh-CN")}
        </time>

        {
          section && (
            <span class="flex items-center">
              <svg
                xmlns="http://www.w3.org/2000/svg"
                class="h-4 w-4 mr-1 shrink-0"
                fill="none"
                viewBox="0 0 24 24"
                stroke="currentColor"
              >
                <path
                  stroke-linecap="round"
                  stroke-linejoin="round"
                  stroke-width="2"
                  d="M3 7v10a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-6l-2-2H5a2 2 0 00-2 2z"
                />
              </svg>
              <a
                href={`/articles/${section}/`}
                class="hover:text-indigo-600 break-all"
              >
                {section}
              </a>
            </span>
          )
        }
      </div>

      {
        article.data.tags && article.data.tags.length > 0 && (
          <div class="flex flex-wrap gap-2 mb-6">
            {article.data.tags.map((tag: string) => (
              <a
                href={`/articles?tags=${tag}`}
                class="text-xs bg-primary-50 dark:bg-primary-900/30 text-primary-600 dark:text-primary-400 py-1 px-2 rounded hover:bg-primary-100 dark:hover:bg-primary-800/30"
                data-astro-prefetch="hover"
              >
                #{tag}
              </a>
            ))}
          </div>
        )
      }
    </header>

    <!-- 文章内容 -->
    <article
      class="prose prose-lg dark:prose-invert prose-primary prose-table:rounded-lg prose-table:border-separate prose-table:border-2 prose-thead:bg-primary-50 dark:prose-thead:bg-gray-800 prose-ul:list-disc prose-ol:list-decimal prose-li:my-1 prose-blockquote:border-l-4 prose-blockquote:border-primary-500 prose-blockquote:bg-gray-100 prose-blockquote:dark:bg-gray-800 prose-a:text-primary-600 prose-a:dark:text-primary-400 prose-a:no-underline prose-a:border-b prose-a:border-primary-300 prose-a:hover:border-primary-600 max-w-none mb-12"
    >
      <Content />
    </article>
    
    <!-- 目录 -->
    <section
      class="hidden 2xl:block fixed right-[calc(50%-44rem)] top-20 w-64 z-30"
      id="toc-panel"
    >
      <div
        class="bg-white dark:bg-gray-800 rounded-xl border border-gray-200 dark:border-gray-700 flex flex-col backdrop-blur-sm bg-opacity-95 dark:bg-opacity-95"
      >
        <div
          class="border-b border-secondary-100 dark:border-gray-700 p-4 pb-3 sticky top-0 bg-white dark:bg-gray-800 bg-opacity-95 dark:bg-opacity-95 backdrop-filter backdrop-blur-sm z-10 rounded-t-xl"
        >
          <h3 class="font-bold text-primary-700 dark:text-primary-400 flex items-center gap-2">
            <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
              <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h7" />
            </svg>
            文章目录
          </h3>
        </div>
        <div
          id="toc-content"
          class="text-sm p-4 pt-2 overflow-y-auto max-h-[calc(100vh-8rem-42px)] scrollbar-thin scrollbar-thumb-primary-200 dark:scrollbar-thumb-primary-800 scrollbar-track-transparent"
          set:html={tableOfContents}
        >
          <!-- 目录内容在服务端生成 -->
        </div>
      </div>
    </section>

    <!-- 相关文章 -->
    {
      relatedArticles.length > 0 && (
        <aside class="mt-12 pt-8 border-t border-secondary-200 dark:border-gray-700">
          <h2 class="text-2xl font-bold mb-6 text-primary-900 dark:text-primary-100">
            {relatedArticlesMatchType === "tag"
              ? "相关文章"
              : relatedArticlesMatchType === "directory"
                ? "同类文章"
                : "推荐阅读"}
          </h2>
          <div class="grid grid-cols-1 md:grid-cols-3 gap-6">
            {relatedArticles.map((relatedArticle: ArticleEntry) => (
              <a
                href={getArticleUrl(relatedArticle.id)}
                class="article-card"
                data-astro-prefetch="viewport"
              >
                <div class="article-card-content">
                  <div class="article-card-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" class="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 20H5a2 2 0 01-2-2V6a2 2 0 012-2h10a2 2 0 012 2v1m2 13a2 2 0 01-2-2V7m2 13a2 2 0 002-2V9a2 2 0 00-2-2h-2m-4-3H9M7 16h6M7 8h6v4H7V8z"></path>
                    </svg>
                  </div>
                  <div class="article-card-body">
                    <h3 class="article-card-title">
                      {relatedArticle.data.title}
                    </h3>
                    <p class="article-card-date">
                      {relatedArticle.data.date.toLocaleDateString("zh-CN")}
                    </p>
                    {relatedArticle.data.summary && (
                      <p class="article-card-summary">
                        {relatedArticle.data.summary}
                      </p>
                    )}
                    <div class="article-card-footer">
                      <time datetime={relatedArticle.data.date.toISOString()} class="article-card-date">
                        {relatedArticle.data.date.toLocaleDateString("zh-CN", {
                          year: 'numeric',
                          month: 'long',
                          day: 'numeric'
                        })}
                      </time>
                      <span class="article-card-read-more">阅读全文</span>
                    </div>
                  </div>
                </div>
              </a>
            ))}
          </div>
        </aside>
      )
    }

    <!-- 返回顶部按钮 -->
    <button
      id="back-to-top"
      class="fixed bottom-8 right-8 w-12 h-12 rounded-full bg-primary-500 dark:bg-primary-600 text-white shadow-md flex items-center justify-center opacity-0 invisible translate-y-5 hover:bg-primary-600 dark:hover:bg-primary-700"
    >
      <svg
        xmlns="http://www.w3.org/2000/svg"
        class="h-6 w-6"
        fill="none"
        viewBox="0 0 24 24"
        stroke="currentColor"
      >
        <path
          stroke-linecap="round"
          stroke-linejoin="round"
          stroke-width="2"
          d="M5 10l7-7m0 0l7 7m-7-7v18"
        ></path>
      </svg>
    </button>
  </div>
</Layout>

<!-- 文章页面脚本 -->
<script is:inline>
  // 文章页面交互脚本
  (function () {
    // 存储事件监听器，便于统一清理
    const listeners = [];

    // 添加事件监听器并记录，方便后续统一清理
    function addListener(element, eventType, handler, options) {
      if (!element) return null;

      element.addEventListener(eventType, handler, options);
      listeners.push({ element, eventType, handler, options });
      return handler;
    }

    // 清理函数，移除所有事件监听器
    function cleanup() {
      listeners.forEach(({ element, eventType, handler, options }) => {
        try {
          element.removeEventListener(eventType, handler, options);
        } catch (err) {
          // 忽略错误
        }
      });

      listeners.length = 0;
    }

    // 1. 应用高亮代码
    function applyCodeHighlighting() {
      const codeElements = document.querySelectorAll('code[data-highlighted]');
      
      codeElements.forEach(codeElement => {
        const highlightedCode = codeElement.getAttribute('data-highlighted');
        if (highlightedCode) {
          codeElement.innerHTML = highlightedCode;
          codeElement.removeAttribute('data-highlighted');
        }
      });
    }
    
    // 2. 加载Mermaid SVG内容
    function loadMermaidSvg() {
      const mermaidContainers = document.querySelectorAll('.mermaid-figure [data-mermaid-src], .mermaid-svg-container[data-mermaid-src]');
      
      mermaidContainers.forEach(container => {
        const svgSrc = container.getAttribute('data-mermaid-src');
        if (svgSrc) {
          fetch(svgSrc)
            .then(response => {
              if (!response.ok) {
                throw new Error('SVG加载失败: ' + response.status);
              }
              return response.text();
            })
            .then(svgContent => {
              // 直接插入SVG内容，而不是作为图像
              container.innerHTML = svgContent;
              
              // 确保SVG元素正确应用样式
              const svgElement = container.querySelector('svg');
              if (svgElement) {
                // 设置高度为auto以允许CSS控制
                svgElement.setAttribute('height', 'auto');
                
                // 确保viewBox属性存在并正确设置
                if (!svgElement.hasAttribute('viewBox') || 
                    !svgElement.getAttribute('viewBox')?.match(/^\d+\s+\d+\s+\d+\s+\d+$/)) {
                  // 如果没有有效的viewBox，尝试从宽高创建一个
                  const width = svgElement.getAttribute('width');
                  const height = svgElement.getAttribute('height');
                  if (width && height && !isNaN(parseFloat(width)) && !isNaN(parseFloat(height))) {
                    svgElement.setAttribute('viewBox', `0 0 ${parseFloat(width)} ${parseFloat(height)}`);
                  } else {
                    // 使用默认viewBox
                    svgElement.setAttribute('viewBox', '0 0 100 100');
                  }
                }
                
                // 确保具有mermaid-svg类
                svgElement.classList.add('mermaid-svg');
              }
              
              // 移除data属性避免重复加载
              container.removeAttribute('data-mermaid-src');
            })
            .catch(error => {
              console.error('加载SVG失败:', error);
              container.innerHTML = '<div class="mermaid-error-message">图表加载失败</div>';
            });
        }
      });
    }
    
    // 3. 处理代码复制功能
    function setupCodeCopy() {
      const handleCopyClick = (e) => {
        const target = e.target;
        const copyButton = target.closest('[data-copy]');
        if (!copyButton) return;
        
        const container = copyButton.closest('.code-block-container');
        if (!container) return;
        
        const codeElement = container.querySelector('pre code');
        if (!codeElement) return;
        
        const code = codeElement.textContent || '';
        
        navigator.clipboard.writeText(code)
          .then(() => {
            const originalText = copyButton.textContent || '';
            copyButton.textContent = '已复制!';
            copyButton.disabled = true;
            
            setTimeout(() => {
              copyButton.textContent = originalText;
              copyButton.disabled = false;
            }, 2000);
          })
          .catch(err => {
            console.error('复制失败:', err);
            alert('复制失败，请手动复制');
          });
      };
      
      addListener(document, 'click', handleCopyClick);
    }

    // 4. 设置阅读进度条
    function setupProgressBar() {
      const progressBar = document.getElementById("progress-bar");
      const backToTopButton = document.getElementById("back-to-top");

      if (!progressBar) return;

      function updateReadingProgress() {
        const scrollTop = window.scrollY || document.documentElement.scrollTop;
        const scrollHeight = document.documentElement.scrollHeight - document.documentElement.clientHeight;
        const progress = (scrollTop / scrollHeight) * 100;

        progressBar.style.width = `${progress}%`;

        if (backToTopButton) {
          if (scrollTop > 300) {
            backToTopButton.classList.add(
              "opacity-100",
              "visible",
              "translate-y-0"
            );
            backToTopButton.classList.remove(
              "opacity-0",
              "invisible",
              "translate-y-5"
            );
          } else {
            backToTopButton.classList.add(
              "opacity-0",
              "invisible",
              "translate-y-5"
            );
            backToTopButton.classList.remove(
              "opacity-100",
              "visible",
              "translate-y-0"
            );
          }
        }
      }

      addListener(window, "scroll", updateReadingProgress);

      if (backToTopButton) {
        addListener(backToTopButton, "click", () => {
          window.scrollTo({
            top: 0,
            behavior: "smooth",
          });
        });
      }

      updateReadingProgress();
    }

    // 5. 管理目录交互
    function setupTableOfContents() {
      const tocContent = document.getElementById("toc-content");
      const tocPanel = document.querySelector("#toc-panel");

      if (!tocPanel || !tocContent) return;

      // 检查窗口大小调整目录面板显示
      function checkTocVisibility() {
        if (window.innerWidth < 1536) {
          tocPanel.classList.add("hidden");
          tocPanel.classList.remove("2xl:block");
        } else {
          tocPanel.classList.remove("hidden");
          tocPanel.classList.add("2xl:block");
        }
      }

      addListener(window, "resize", checkTocVisibility);
      checkTocVisibility();

      // 处理目录链接点击跳转
      const tocLinks = tocContent.querySelectorAll("a");
      tocLinks.forEach(link => {
        addListener(link, "click", (e) => {
          e.preventDefault();
          const targetId = link.getAttribute("href")?.substring(1);
          if (!targetId) return;

          const targetElement = document.getElementById(targetId);
          if (targetElement) {
            const offset = 100;
            const targetPosition = targetElement.getBoundingClientRect().top + window.scrollY - offset;

            window.scrollTo({
              top: targetPosition,
              behavior: "smooth",
            });

            targetElement.classList.add("bg-primary-50", "dark:bg-primary-900/20");
            setTimeout(() => {
              targetElement.classList.remove("bg-primary-50", "dark:bg-primary-900/20");
            }, 2000);
          }
        });
      });

      // 监听滚动以更新当前活动的目录项
      const article = document.querySelector("article");
      if (!article) return;

      let ticking = false;

      function updateActiveHeading() {
        const headings = Array.from(article.querySelectorAll("h1, h2, h3, h4, h5, h6"));
        const tocLinks = Array.from(tocContent.querySelectorAll("a"));

        // 清除所有活动状态
        tocLinks.forEach((link) => {
          link.classList.remove("text-primary-600", "dark:text-primary-400", "font-medium");
        });

        // 找出当前可见的标题
        const scrollPosition = window.scrollY + 150;
        let currentHeading = null;

        for (const heading of headings) {
          const headingTop = heading.getBoundingClientRect().top + window.scrollY;
          if (headingTop <= scrollPosition) {
            currentHeading = heading;
          } else {
            break;
          }
        }

        // 高亮当前标题对应的目录项
        if (currentHeading) {
          const id = currentHeading.getAttribute('id');
          if (id) {
            const activeLink = tocLinks.find(
              (link) => link.getAttribute("href") === `#${id}`
            );
            if (activeLink) {
              // 高亮当前目录项
              activeLink.classList.add("text-primary-600", "dark:text-primary-400", "font-medium");
              
              // 可选: 确保当前激活的目录项在可视区域内
              const tocContainer = tocContent.querySelector('ul');
              if (tocContainer) {
                const linkOffsetTop = activeLink.offsetTop;
                const containerScrollTop = tocContainer.scrollTop;
                const containerHeight = tocContainer.clientHeight;
                
                // 如果当前项不在视口内，滚动目录
                if (linkOffsetTop < containerScrollTop || 
                    linkOffsetTop > containerScrollTop + containerHeight) {
                  tocContainer.scrollTop = linkOffsetTop - containerHeight / 2;
                }
              }
            }
          }
        }
      }

      addListener(window, "scroll", () => {
        if (!ticking) {
          window.requestAnimationFrame(() => {
            updateActiveHeading();
            ticking = false;
          });
          ticking = true;
        }
      });

      updateActiveHeading();
    }

    // 初始化所有功能
    function init() {
      if (!document.querySelector("article")) return;
      
      // 应用代码高亮
      applyCodeHighlighting();
      
      // 加载Mermaid SVG图表
      loadMermaidSvg();
      
      // 设置代码复制功能
      setupCodeCopy();
      
      // 设置阅读进度条
      setupProgressBar();
      
      // 设置目录交互
      setupTableOfContents();
    }

    // 注册清理函数
    function registerCleanup() {
      // 使用 once: true 确保事件只触发一次
      document.addEventListener("astro:before-preparation", cleanup, { once: true });
      document.addEventListener("astro:before-swap", cleanup, { once: true });
      document.addEventListener("swup:willReplaceContent", cleanup, { once: true });
      window.addEventListener("beforeunload", cleanup, { once: true });
    }

    // 处理页面跳转事件
    function setupPageTransitionEvents() {
      // 页面转换后事件
      const pageTransitionEvents = [
        { name: "astro:after-swap", delay: 10 },
        { name: "astro:page-load", delay: 10 },
        { name: "swup:contentReplaced", delay: 10 },
      ];

      // 设置每个页面转换事件
      pageTransitionEvents.forEach(({ name, delay }) => {
        document.addEventListener(name, () => {
          cleanup(); // 立即清理

          // 延迟初始化，确保DOM完全更新
          setTimeout(() => {
            cleanup(); // 再次清理，确保没有遗漏
            init();
          }, delay);
        });
      });
    }

    // 页面加载后初始化
    if (document.readyState === "loading") {
      document.addEventListener("DOMContentLoaded", () => {
        init();
        registerCleanup();
        setupPageTransitionEvents();
      }, { once: true });
    } else {
      init();
      registerCleanup();
      setupPageTransitionEvents();
    }
  })();
</script>
