---
import { SITE_NAME, NAV_LINKS } from "@/consts.ts";
import ThemeToggle from "./ThemeToggle.astro";

// 获取当前路径
const currentPath = Astro.url.pathname;

// 移除结尾的斜杠以统一路径格式（保留根路径的斜杠）
const normalizedPath =
  currentPath === "/"
    ? "/"
    : currentPath.endsWith("/")
      ? currentPath.slice(0, -1)
      : currentPath;

// 定义导航链接
---

<header
  class="fixed w-full top-0 z-50"
  id="main-header"
>
  <div
    class="absolute inset-0 bg-gray-50/95 dark:bg-dark-bg/95"
    id="header-bg"
  >
  </div>
  <nav class="relative">
    <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
      <div class="flex justify-between h-16">
        <!-- Logo 部分 -->
        <div class="flex items-center">
          <a
            href="/"
            class="text-xl md:text-2xl font-bold tracking-tight bg-gradient-to-r from-primary-600 to-primary-400 bg-clip-text text-transparent hover:from-primary-500 hover:to-primary-300 dark:from-primary-400 dark:to-primary-200 dark:hover:from-primary-300 dark:hover:to-primary-100"
          >
            {SITE_NAME}
          </a>
        </div>

        <!-- 导航链接 -->
        <div class="hidden md:flex md:items-center md:space-x-8">
          <!-- 桌面端搜索框 -->
          <div class="relative">
            <input
              type="text"
              id="desktop-search"
              class="w-48 pl-10 pr-4 py-1.5 rounded-full text-sm text-gray-700 dark:text-gray-200 placeholder-gray-500 dark:placeholder-gray-400 bg-gray-50/80 dark:bg-gray-800/60 border border-gray-200/60 dark:border-gray-700/40 focus:outline-none focus:ring-1 focus:ring-primary-400 dark:focus:ring-primary-500 focus:bg-white dark:focus:bg-gray-800 focus:border-primary-300 dark:focus:border-primary-600"
              placeholder="搜索文章..."
            />
            <div
              class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none"
            >
              <svg
                class="h-4 w-4 text-gray-400 dark:text-gray-500"
                xmlns="http://www.w3.org/2000/svg"
                fill="none"
                viewBox="0 0 24 24"
                stroke="currentColor"
                aria-hidden="true"
              >
                <path
                  stroke-linecap="round"
                  stroke-linejoin="round"
                  stroke-width="2"
                  d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
                ></path>
              </svg>
            </div>

            <!-- 搜索结果容器（默认隐藏） -->
            <div
              id="desktop-search-results"
              class="absolute top-full left-0 right-0 mt-2 max-h-80 overflow-y-auto rounded-lg bg-white/95 dark:bg-gray-800/95 shadow-md border border-gray-200/70 dark:border-gray-700/70 backdrop-blur-sm z-50 hidden"
            >
              <!-- 结果将通过JS动态填充 -->
              <div
                class="p-4 text-center text-gray-500 dark:text-gray-400"
                id="desktop-search-message"
              >
                <p>输入关键词开始搜索</p>
              </div>
              <ul
                class="divide-y divide-gray-200/70 dark:divide-gray-700/70"
                id="desktop-search-list"
              >
              </ul>
            </div>
          </div>

          {
            NAV_LINKS.map((link) => (
              <a
                href={link.href}
                class={`inline-flex items-center px-1 pt-1 text-sm font-medium ${
                  normalizedPath === link.href
                    ? "text-primary-600 dark:text-primary-400 border-b-2 border-primary-600 dark:border-primary-400"
                    : "text-secondary-600 dark:text-secondary-400 hover:text-primary-600 dark:hover:text-primary-400 hover:border-b-2 hover:border-primary-300 dark:hover:border-primary-700"
                }`}
              >
                {link.text}
              </a>
            ))
          }
          <ThemeToggle />
        </div>

        <!-- 移动端菜单按钮 -->
        <div class="flex items-center md:hidden">
          <!-- 移动端搜索按钮 -->
          <button
            type="button"
            id="mobile-search-button"
            class="inline-flex items-center justify-center p-2 rounded-md text-secondary-400 dark:text-secondary-500 hover:text-secondary-500 dark:hover:text-secondary-400 hover:bg-secondary-100 dark:hover:bg-dark-card focus:outline-none focus:ring-2 focus:ring-inset focus:ring-primary-500 mr-2"
            aria-expanded="false"
            aria-label="搜索"
          >
            <span class="sr-only">搜索</span>
            <svg
              class="h-6 w-6"
              fill="none"
              viewBox="0 0 24 24"
              stroke="currentColor"
              aria-hidden="true"
            >
              <path
                stroke-linecap="round"
                stroke-linejoin="round"
                stroke-width="2"
                d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
              ></path>
            </svg>
          </button>

          <button
            type="button"
            class="inline-flex items-center justify-center p-2 rounded-md text-secondary-400 dark:text-secondary-500 hover:text-secondary-500 dark:hover:text-secondary-400 hover:bg-secondary-100 dark:hover:bg-dark-card focus:outline-none focus:ring-2 focus:ring-inset focus:ring-primary-500"
            id="mobile-menu-button"
            aria-expanded="false"
            aria-label="打开菜单"
          >
            <span class="sr-only">打开菜单</span>
            <svg
              class="h-6 w-6 block"
              id="menu-open-icon"
              fill="none"
              viewBox="0 0 24 24"
              stroke="currentColor"
              aria-hidden="true"
            >
              <path
                stroke-linecap="round"
                stroke-linejoin="round"
                stroke-width="2"
                d="M4 6h16M4 12h16M4 18h16"
              ></path>
            </svg>
            <svg
              class="h-6 w-6 hidden"
              id="menu-close-icon"
              fill="none"
              viewBox="0 0 24 24"
              stroke="currentColor"
              aria-hidden="true"
            >
              <path
                stroke-linecap="round"
                stroke-linejoin="round"
                stroke-width="2"
                d="M6 18L18 6M6 6l12 12"
              ></path>
            </svg>
          </button>
        </div>
      </div>
    </div>

    <!-- 移动端搜索面板 -->
    <div
      id="mobile-search-panel"
      class="hidden md:hidden fixed inset-x-0 top-16 p-4 bg-white dark:bg-gray-800 shadow-md z-50 border-t border-gray-200 dark:border-gray-700"
    >
      <div class="relative">
        <input
          type="text"
          id="mobile-search"
          class="w-full pl-10 pr-10 py-2 rounded-full text-sm text-gray-700 dark:text-gray-200 placeholder-gray-500 dark:placeholder-gray-400 bg-gray-50/80 dark:bg-gray-800/60 border border-gray-200/60 dark:border-gray-700/40 focus:outline-none focus:ring-1 focus:ring-primary-400 dark:focus:ring-primary-500 focus:bg-white dark:focus:bg-gray-800 focus:border-primary-300 dark:focus:border-primary-600"
          placeholder="搜索文章..."
        />
        <div
          class="absolute inset-y-0 left-0 pl-3 flex items-center pointer-events-none"
        >
          <svg
            class="h-5 w-5 text-gray-400 dark:text-gray-500"
            xmlns="http://www.w3.org/2000/svg"
            fill="none"
            viewBox="0 0 24 24"
            stroke="currentColor"
            aria-hidden="true"
          >
            <path
              stroke-linecap="round"
              stroke-linejoin="round"
              stroke-width="2"
              d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"
            ></path>
          </svg>
        </div>
        <button
          id="mobile-search-close"
          class="absolute inset-y-0 right-0 pr-3 flex items-center text-gray-400 hover:text-gray-600 dark:hover:text-gray-300"
          aria-label="关闭搜索"
        >
          <svg
            class="h-5 w-5"
            fill="none"
            viewBox="0 0 24 24"
            stroke="currentColor"
            aria-hidden="true"
          >
            <path
              stroke-linecap="round"
              stroke-linejoin="round"
              stroke-width="2"
              d="M6 18L18 6M6 6l12 12"
            ></path>
          </svg>
        </button>
      </div>
      <!-- 移动端搜索结果 -->
      <div
        id="mobile-search-results"
        class="mt-3 max-h-80 overflow-y-auto rounded-lg bg-white/95 dark:bg-gray-800/95 shadow-md border border-gray-200/70 dark:border-gray-700/70 backdrop-blur-sm hidden"
      >
        <!-- 结果将通过JS动态填充 -->
        <div
          class="p-4 text-center text-gray-500 dark:text-gray-400"
          id="mobile-search-message"
        >
          <p>输入关键词开始搜索</p>
        </div>
        <ul
          class="divide-y divide-gray-200/70 dark:divide-gray-700/70"
          id="mobile-search-list"
        >
        </ul>
      </div>
    </div>

    <!-- 移动端菜单 -->
    <div
      class="hidden md:hidden fixed inset-x-0 top-16 z-40"
      id="mobile-menu"
    >
      <div id="mobile-menu-bg" class="bg-white/95 dark:bg-gray-800/95 backdrop-blur-sm shadow-lg border-t border-gray-200 dark:border-gray-700/50 rounded-b-lg">
        <div class="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-2">
          <div class="grid gap-1">
            {
              NAV_LINKS.map((link) => (
                <a
                  href={link.href}
                  class={`flex items-center px-3 py-3 rounded-lg text-base font-medium ${
                    normalizedPath === link.href
                      ? "text-white bg-primary-600 dark:bg-primary-500 shadow-sm"
                      : "text-gray-700 dark:text-gray-200 hover:bg-gray-100 dark:hover:bg-gray-800/70"
                  }`}
                >
                  {link.text}
                </a>
              ))
            }
            <div
              class="mt-2 pt-3 border-t border-gray-200 dark:border-gray-700 flex items-center justify-between cursor-pointer hover:bg-gray-100 dark:hover:bg-gray-800/70 rounded-lg px-3 py-2"
              id="theme-toggle-container"
            >
              <span class="text-sm font-medium text-gray-600 dark:text-gray-300"
                >切换主题</span
              >
              <ThemeToggle />
            </div>
          </div>
        </div>
      </div>
    </div>
  </nav>
</header>

<script>
  function initHeader() {
    const header = document.getElementById("header-bg");
    const scrollThreshold = 50;

    // 获取桌面端导航链接（排除移动端菜单中的链接）
    const navLinks = document.querySelectorAll('.hidden.md\\:flex a[href]');

    // 更新导航高亮状态
    function updateNavHighlight() {
      const currentUrl = window.location.pathname;
      const normalizedPath =
        currentUrl === "/"
          ? "/"
          : currentUrl.endsWith("/")
            ? currentUrl.slice(0, -1)
            : currentUrl;

      // 更新桌面端导航链接
      navLinks.forEach((link) => {
        const href = link.getAttribute("href");
        const isActive = href === normalizedPath;
        
        // 使用 classList.toggle 来切换类
        link.classList.toggle("text-primary-600", isActive);
        link.classList.toggle("dark:text-primary-400", isActive);
        link.classList.toggle("border-b-2", isActive);
        link.classList.toggle("border-primary-600", isActive);
        link.classList.toggle("dark:border-primary-400", isActive);
        
        link.classList.toggle("text-secondary-600", !isActive);
        link.classList.toggle("dark:text-secondary-400", !isActive);
        link.classList.toggle("hover:text-primary-600", !isActive);
        link.classList.toggle("dark:hover:text-primary-400", !isActive);
        link.classList.toggle("hover:border-b-2", !isActive);
        link.classList.toggle("hover:border-primary-300", !isActive);
        link.classList.toggle("dark:hover:border-primary-700", !isActive);
      });

      // 更新移动端导航链接
      const mobileNavLinks = document.querySelectorAll('#mobile-menu a[href]');
      mobileNavLinks.forEach((link) => {
        const href = link.getAttribute("href");
        const isActive = href === normalizedPath;
        
        // 使用 classList.toggle 来切换类
        link.classList.toggle("text-white", isActive);
        link.classList.toggle("bg-primary-600", isActive);
        link.classList.toggle("dark:bg-primary-500", isActive);
        link.classList.toggle("shadow-sm", isActive);
        
        link.classList.toggle("text-gray-700", !isActive);
        link.classList.toggle("dark:text-gray-200", !isActive);
        link.classList.toggle("hover:bg-gray-100", !isActive);
        link.classList.toggle("dark:hover:bg-gray-800/70", !isActive);
      });
    }

    function updateHeaderBackground() {
      if (window.scrollY > scrollThreshold) {
        header?.classList.add("scrolled");
      } else {
        header?.classList.remove("scrolled");
      }
    }

    // 初始检查
    updateHeaderBackground();
    updateNavHighlight();

    // 添加滚动事件监听
    window.addEventListener("scroll", updateHeaderBackground);

    // 监听路由变化
    document.addEventListener('astro:page-load', updateNavHighlight);
    document.addEventListener('astro:after-swap', updateNavHighlight);

    // 移动端菜单逻辑
    const mobileMenuButton = document.getElementById("mobile-menu-button");
    const mobileMenu = document.getElementById("mobile-menu");
    const menuOpenIcon = document.getElementById("menu-open-icon");
    const menuCloseIcon = document.getElementById("menu-close-icon");
    
    // 移动端搜索面板元素
    const mobileSearchButton = document.getElementById("mobile-search-button");
    const mobileSearchPanel = document.getElementById("mobile-search-panel");
    const mobileSearch = document.getElementById("mobile-search");
    const mobileSearchClose = document.getElementById("mobile-search-close");

    // 关闭移动端菜单的函数
    function closeMobileMenu() {
      if (mobileMenuButton && mobileMenu && menuOpenIcon && menuCloseIcon) {
        mobileMenuButton.setAttribute("aria-expanded", "false");
        mobileMenu.classList.add("hidden");
        menuOpenIcon.classList.remove("hidden");
        menuCloseIcon.classList.add("hidden");
      }
    }
    
    // 关闭移动端搜索面板的函数
    function closeMobileSearch() {
      if (mobileSearchPanel) {
        mobileSearchPanel.classList.add("hidden");
      }
    }

    if (mobileMenuButton && mobileMenu && menuOpenIcon && menuCloseIcon) {
      mobileMenuButton.addEventListener("click", () => {
        const expanded =
          mobileMenuButton.getAttribute("aria-expanded") === "true";

        // 切换菜单状态
        mobileMenuButton.setAttribute("aria-expanded", (!expanded).toString());

        if (expanded) {
          // 直接隐藏菜单，不使用过渡效果
          mobileMenu.classList.add("hidden");
        } else {
          // 打开菜单前先关闭搜索面板
          closeMobileSearch();
          
          // 直接显示菜单，不使用过渡效果
          mobileMenu.classList.remove("hidden");
        }

        // 切换图标
        menuOpenIcon.classList.toggle("hidden");
        menuCloseIcon.classList.toggle("hidden");
      });

      // 为移动端导航链接添加点击事件
      const mobileNavLinks = document.querySelectorAll('#mobile-menu a[href]');
      mobileNavLinks.forEach(link => {
        link.addEventListener('click', closeMobileMenu);
      });
    }

    // 移动端搜索按钮
    if (mobileSearchButton && mobileSearchPanel) {
      mobileSearchButton.addEventListener("click", () => {
        // 检查搜索面板是否已经打开
        const isSearchVisible = !mobileSearchPanel.classList.contains("hidden");
        
        if (isSearchVisible) {
          // 如果搜索面板已打开，则关闭它
          closeMobileSearch();
        } else {
          // 打开搜索面板前先关闭菜单
          closeMobileMenu();
          
          // 打开搜索面板
          mobileSearchPanel.classList.remove("hidden");
          if (mobileSearch) mobileSearch.focus();
        }
      });

      if (mobileSearchClose) {
        mobileSearchClose.addEventListener("click", () => {
          closeMobileSearch();
        });
      }
    }
  }

  // 搜索功能逻辑
  function initSearch() {
    // 搜索节流函数
    function debounce<T extends (...args: any[]) => void>(
      func: T,
      wait: number,
    ): (...args: Parameters<T>) => void {
      let timeout: ReturnType<typeof setTimeout> | undefined;
      return function (this: any, ...args: Parameters<T>): void {
        clearTimeout(timeout);
        timeout = setTimeout(() => func.apply(this, args), wait);
      };
    }

    // 获取DOM元素
    const desktopSearch = document.getElementById("desktop-search");
    const desktopResults = document.getElementById("desktop-search-results");
    const desktopList = document.getElementById("desktop-search-list");
    const desktopMessage = document.getElementById("desktop-search-message");

    const mobileSearch = document.getElementById("mobile-search");
    const mobileResults = document.getElementById("mobile-search-results");
    const mobileList = document.getElementById("mobile-search-list");
    const mobileMessage = document.getElementById("mobile-search-message");

    // 文章对象的接口定义
    interface Article {
      id: string;
      title: string;
      date: string | Date;
      summary?: string;
      tags?: string[];
      image?: string;
      content?: string;
    }

    let articles: Article[] = [];
    let isArticlesLoaded = false;

    // 获取文章数据
    async function fetchArticles() {
      if (isArticlesLoaded && articles.length > 0) return;

      try {
        const response = await fetch("/api/search");
        if (!response.ok) {
          throw new Error("获取文章数据失败");
        }
        articles = await response.json();
        isArticlesLoaded = true;
      } catch (error) {
        console.error("获取文章失败:", error);
      }
    }

    // 高亮文本中的匹配部分
    function highlightText(text: string, query: string): string {
      if (!text || !query.trim()) return text;

      // 转义正则表达式中的特殊字符
      const escapedQuery = query.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
      const regex = new RegExp(`(${escapedQuery})`, "gi");

      return text.replace(
        regex,
        '<mark class="bg-yellow-100 dark:bg-yellow-900/30 text-gray-900 dark:text-gray-100 px-0.5 rounded">$1</mark>',
      );
    }

    // 搜索文章
    function searchArticles(
      query: string,
      resultsList: HTMLElement,
      resultsMessage: HTMLElement,
    ) {
      if (!query.trim()) {
        resultsList.innerHTML = "";
        resultsMessage.textContent = "输入关键词开始搜索";
        resultsMessage.style.display = "block";
        return;
      }

      if (articles.length === 0) {
        resultsMessage.textContent = "正在加载数据...";
        resultsMessage.style.display = "block";
        return;
      }

      const lowerQuery = query.toLowerCase();

      // 过滤并排序结果
      const filteredArticles = articles
        .filter((article: Article) => {
          const title = article.title.toLowerCase();
          const tags = article.tags
            ? article.tags.map((tag: string) => tag.toLowerCase())
            : [];
          const summary = article.summary ? article.summary.toLowerCase() : "";
          const content = article.content ? article.content.toLowerCase() : "";

          return (
            title.includes(lowerQuery) ||
            tags.some((tag: string) => tag.includes(lowerQuery)) ||
            summary.includes(lowerQuery) ||
            content.includes(lowerQuery)
          );
        })
        .sort((a: Article, b: Article) => {
          // 标题匹配优先
          const aTitle = a.title.toLowerCase();
          const bTitle = b.title.toLowerCase();

          if (aTitle.includes(lowerQuery) && !bTitle.includes(lowerQuery)) {
            return -1;
          }
          if (!aTitle.includes(lowerQuery) && bTitle.includes(lowerQuery)) {
            return 1;
          }

          // 内容匹配次之
          const aContent = a.content ? a.content.toLowerCase() : "";
          const bContent = b.content ? b.content.toLowerCase() : "";

          if (aContent.includes(lowerQuery) && !bContent.includes(lowerQuery)) {
            return -1;
          }
          if (!aContent.includes(lowerQuery) && bContent.includes(lowerQuery)) {
            return 1;
          }

          // 日期排序
          return new Date(b.date).getTime() - new Date(a.date).getTime();
        })
        .slice(0, 10); // 限制结果数量

      if (filteredArticles.length === 0) {
        resultsList.innerHTML = "";
        resultsMessage.textContent = "没有找到相关内容";
        resultsMessage.style.display = "block";
        return;
      }

      // 显示结果
      resultsMessage.style.display = "none";
      resultsList.innerHTML = filteredArticles
        .map((article: Article) => {
          // 生成匹配的内容片段
          let contentMatch = "";
          if (
            article.content &&
            article.content.toLowerCase().includes(lowerQuery)
          ) {
            // 找到匹配文本在内容中的位置
            const matchIndex = article.content
              .toLowerCase()
              .indexOf(lowerQuery);
            // 计算片段的起始和结束位置
            const startPos = Math.max(0, matchIndex - 50);
            const endPos = Math.min(article.content.length, matchIndex + 100);
            // 提取片段
            let snippet = article.content.substring(startPos, endPos);
            // 如果不是从文章开头开始，添加省略号
            if (startPos > 0) {
              snippet = "..." + snippet;
            }
            // 如果不是到文章结尾，添加省略号
            if (endPos < article.content.length) {
              snippet = snippet + "...";
            }
            // 高亮匹配的文本
            snippet = highlightText(snippet, query);
            contentMatch = `<p class="text-xs text-gray-500 dark:text-gray-400 mt-1 line-clamp-2">${snippet}</p>`;
          }

          // 高亮标题和摘要中的匹配文本
          const highlightedTitle = highlightText(article.title, query);
          const highlightedSummary = article.summary
            ? highlightText(article.summary, query)
            : "";

          return `
                <li>
                    <a href="/articles/${article.id}" class="block px-4 py-3 hover:bg-gray-100 dark:hover:bg-gray-700/70">
                        <h3 class="text-sm font-medium text-gray-800 dark:text-gray-200 truncate">${highlightedTitle}</h3>
                        ${article.summary ? `<p class="text-xs text-gray-500 dark:text-gray-400 mt-1 truncate">${highlightedSummary}</p>` : ""}
                        ${contentMatch}
                        ${
                          article.tags && article.tags.length > 0
                            ? `
                            <div class="flex flex-wrap gap-1 mt-1.5">
                                ${article.tags
                                  .slice(0, 3)
                                  .map(
                                    (tag: string) => `
                                    <span class="inline-block text-xs bg-primary-50/50 dark:bg-primary-900/20 text-primary-600 dark:text-primary-400 py-0.5 px-1.5 rounded-full">#${tag}</span>
                                `,
                                  )
                                  .join("")}
                                ${article.tags.length > 3 ? `<span class="text-xs text-gray-400 dark:text-gray-500">+${article.tags.length - 3}</span>` : ""}
                            </div>
                        `
                            : ""
                        }
                    </a>
                </li>
            `;
        })
        .join("");
    }

    // 节流搜索
    const debouncedDesktopSearch = debounce((value: string) => {
      if (desktopList && desktopMessage) {
        searchArticles(
          value,
          desktopList as HTMLElement,
          desktopMessage as HTMLElement,
        );
      }
    }, 300);

    const debouncedMobileSearch = debounce((value: string) => {
      if (mobileList && mobileMessage) {
        searchArticles(
          value,
          mobileList as HTMLElement,
          mobileMessage as HTMLElement,
        );
      }
    }, 300);

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      desktopSearch.addEventListener("input", (e: Event) => {
        const target = e.target as HTMLInputElement;
        if (target && target.value !== undefined) {
          debouncedDesktopSearch(target.value);
        }
      });

      // 点击外部关闭结果
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          !desktopResults.contains(target)
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      // ESC键关闭结果
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      });
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    // 移动端搜索逻辑
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        mobileResults.classList.remove("hidden");
        const target = e.target as HTMLInputElement;
        if (target && target.value !== undefined) {
          debouncedMobileSearch(target.value);
          if (!isArticlesLoaded) fetchArticles();
        }
      });

      // ESC键关闭搜索面板
      mobileSearch.addEventListener("keydown", (e: KeyboardEvent) => {
        if (e.key === "Escape") {
          const mobileSearchPanel = document.getElementById(
            "mobile-search-panel",
          );
          if (mobileSearchPanel) {
            mobileSearchPanel.classList.add("hidden");
          }
        }
      });
    }
  }

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    initSearch();
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  // 在文档加载时初始化一次
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    document.addEventListener("DOMContentLoaded", setupHeader);
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    setupHeader();
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  // 支持 Astro 视图转换
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  document.addEventListener("astro:page-load", setupHeader);

  // 原事件监听 - 保留以兼容可能的旧版本
  document.addEventListener("astro:swup:page:view", setupHeader);

  // 清理
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    // 移除可能的全局事件监听器
    window.removeEventListener("scroll", () => {});
  });
</script>