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686 lines (583 loc) · 19.5 KB
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/**
* 全站搜索功能
* 支持 URL 搜索、文章搜索、Wiki 搜索
*/
(function () {
'use strict';
// 搜索数据
let searchData = {
urls: [],
articles: [],
wiki: [],
};
// 搜索配置
const config = {
minQueryLength: 2,
maxResults: 10,
debounceDelay: 300,
};
// DOM 元素
let searchOverlay = null;
let searchInput = null;
let searchResults = null;
let searchSpinner = null;
let isSearchOpen = false;
// 初始化搜索
function init() {
if (document.querySelector('.search-overlay')) {
return; // 已经初始化过
}
createSearchOverlay();
loadSearchData();
bindEvents();
}
// 创建搜索覆盖层
function createSearchOverlay() {
const overlay = document.createElement('div');
overlay.className = 'search-overlay';
overlay.innerHTML = `
<div class="search-container">
<div class="search-header">
<input type="text" class="search-input" placeholder="搜索网站内容..." autocomplete="off">
<button class="search-close" aria-label="关闭搜索">×</button>
</div>
<div class="search-spinner">
<div class="spinner"></div>
</div>
<div class="search-results">
<div class="search-empty">
<i class="fas fa-search"></i>
<p>输入关键词开始搜索</p>
</div>
</div>
<div class="search-footer">
<span class="search-shortcut">按 ESC 关闭</span>
<span class="search-hint">↑↓ 选择结果</span>
</div>
</div>
`;
document.body.appendChild(overlay);
searchOverlay = overlay;
searchInput = overlay.querySelector('.search-input');
searchResults = overlay.querySelector('.search-results');
searchSpinner = overlay.querySelector('.search-spinner');
// 添加样式
addSearchStyles();
}
// 添加搜索样式
function addSearchStyles() {
if (document.querySelector('#search-styles')) {
return;
}
const style = document.createElement('style');
style.id = 'search-styles';
style.textContent = `
.search-overlay {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
background: rgba(0, 0, 0, 0.8);
z-index: 10000;
display: none;
align-items: flex-start;
justify-content: center;
padding-top: 10vh;
animation: fadeIn 0.2s ease;
}
@keyframes fadeIn {
from { opacity: 0; }
to { opacity: 1; }
}
.search-overlay.active {
display: flex;
}
.search-container {
width: 90%;
max-width: 700px;
background: white;
border-radius: 12px;
box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
overflow: hidden;
animation: slideDown 0.3s ease;
}
@keyframes slideDown {
from {
transform: translateY(-50px);
opacity: 0;
}
to {
transform: translateY(0);
opacity: 1;
}
}
.search-header {
display: flex;
align-items: center;
padding: 20px;
border-bottom: 1px solid #e5e7eb;
gap: 12px;
}
.search-input {
flex: 1;
padding: 12px 16px;
font-size: 16px;
border: 2px solid #e5e7eb;
border-radius: 8px;
outline: none;
transition: border-color 0.2s;
}
.search-input:focus {
border-color: #3b82f6;
}
.search-close {
width: 40px;
height: 40px;
border: none;
background: #f3f4f6;
border-radius: 8px;
font-size: 24px;
cursor: pointer;
color: #6b7280;
transition: all 0.2s;
}
.search-close:hover {
background: #e5e7eb;
color: #1f2937;
}
.search-spinner {
display: none;
padding: 40px;
text-align: center;
}
.search-spinner.active {
display: block;
}
.spinner {
width: 40px;
height: 40px;
border: 4px solid #e5e7eb;
border-top-color: #3b82f6;
border-radius: 50%;
animation: spin 0.8s linear infinite;
margin: 0 auto;
}
@keyframes spin {
to { transform: rotate(360deg); }
}
.search-results {
max-height: 400px;
overflow-y: auto;
padding: 0;
}
.search-empty {
text-align: center;
padding: 40px 20px;
color: #9ca3af;
}
.search-empty i {
font-size: 48px;
margin-bottom: 12px;
opacity: 0.5;
}
.search-item {
padding: 16px 20px;
border-bottom: 1px solid #f3f4f6;
cursor: pointer;
transition: background 0.2s;
text-decoration: none;
color: inherit;
display: block;
}
.search-item:hover,
.search-item.active {
background: #f9fafb;
}
.search-item-title {
font-weight: 600;
color: #1f2937;
margin-bottom: 4px;
}
.search-item-url {
color: #6b7280;
font-size: 13px;
margin-bottom: 4px;
}
.search-item-desc {
color: #9ca3af;
font-size: 14px;
}
.search-item-highlight {
background: #fef3c7;
padding: 0 2px;
border-radius: 2px;
}
.search-category {
padding: 12px 20px;
font-weight: 600;
color: #6b7280;
font-size: 12px;
text-transform: uppercase;
letter-spacing: 0.5px;
background: #f9fafb;
}
.search-footer {
display: flex;
justify-content: space-between;
align-items: center;
padding: 12px 20px;
background: #f9fafb;
border-top: 1px solid #e5e7eb;
font-size: 13px;
color: #6b7280;
}
.dark-mode .search-overlay {
background: rgba(0, 0, 0, 0.9);
}
.dark-mode .search-container {
background: #1f2937;
box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}
.dark-mode .search-header {
border-bottom-color: #374151;
}
.dark-mode .search-input {
background: #374151;
border-color: #4b5563;
color: #f9fafb;
}
.dark-mode .search-input:focus {
border-color: #3b82f6;
}
.dark-mode .search-close {
background: #374151;
color: #9ca3af;
}
.dark-mode .search-close:hover {
background: #4b5563;
color: #f9fafb;
}
.dark-mode .search-item {
border-bottom-color: #374151;
}
.dark-mode .search-item:hover,
.dark-mode .search-item.active {
background: #374151;
}
.dark-mode .search-item-title {
color: #f9fafb;
}
.dark-mode .search-item-url {
color: #9ca3af;
}
.dark-mode .search-item-desc {
color: #6b7280;
}
.dark-mode .search-item-highlight {
background: #92400e;
}
.dark-mode .search-category {
background: #374151;
color: #9ca3af;
}
.dark-mode .search-footer {
background: #374151;
border-top-color: #4b5563;
}
/* 移动端适配 */
@media (max-width: 768px) {
.search-container {
width: 95%;
margin-top: 10vh;
}
.search-input {
font-size: 14px;
}
.search-results {
max-height: 50vh;
}
}
`;
document.head.appendChild(style);
}
// 加载搜索数据
function loadSearchData() {
// 加载导航数据
fetch('/data/nav.json')
.then((response) => response.json())
.then((data) => {
data.categories.forEach((category) => {
category.links.forEach((link) => {
searchData.urls.push({
title: link.name,
url: link.url,
category: category.name,
type: 'url',
});
});
});
})
.catch((error) => {
console.error('加载导航数据失败:', error);
});
// 加载文章数据（这里可以扩展为实际的文章搜索）
const articles = document.querySelectorAll('.post-card');
articles.forEach((article) => {
const title = article.querySelector('.post-title')?.textContent || '';
const url = article.getAttribute('href') || '';
const desc = article.querySelector('.post-excerpt')?.textContent || '';
if (title && url) {
searchData.articles.push({
title: title,
url: url,
description: desc,
type: 'article',
});
}
});
}
// 绑定事件
function bindEvents() {
// 键盘快捷键
document.addEventListener('keydown', handleKeydown);
// 搜索输入
if (searchInput) {
searchInput.addEventListener('input', debounce(handleSearch, config.debounceDelay));
searchInput.addEventListener('keydown', handleSearchKeydown);
}
// 关闭按钮
const closeBtn = searchOverlay?.querySelector('.search-close');
if (closeBtn) {
closeBtn.addEventListener('click', closeSearch);
}
// 点击覆盖层关闭
searchOverlay?.addEventListener('click', (e) => {
if (e.target === searchOverlay) {
closeSearch();
}
});
}
// 处理键盘事件
function handleKeydown(e) {
// Cmd/Ctrl + K 打开搜索
if ((e.metaKey || e.ctrlKey) && e.key === 'k') {
e.preventDefault();
toggleSearch();
}
// ESC 关闭搜索
if (e.key === 'Escape' && isSearchOpen) {
closeSearch();
}
}
// 处理搜索输入
function handleSearchKeydown(e) {
const items = searchResults?.querySelectorAll('.search-item');
if (!items.length) return;
const activeItem = searchResults.querySelector('.search-item.active');
const currentIndex = Array.from(items).indexOf(activeItem);
// 向下箭头
if (e.key === 'ArrowDown') {
e.preventDefault();
const nextIndex = currentIndex < items.length - 1 ? currentIndex + 1 : 0;
setActiveItem(items[nextIndex]);
}
// 向上箭头
if (e.key === 'ArrowUp') {
e.preventDefault();
const prevIndex = currentIndex > 0 ? currentIndex - 1 : items.length - 1;
setActiveItem(items[prevIndex]);
}
// Enter 选择结果
if (e.key === 'Enter' && activeItem) {
e.preventDefault();
activeItem.click();
}
}
// 设置激活项
function setActiveItem(item) {
searchResults.querySelectorAll('.search-item').forEach((i) => {
i.classList.remove('active');
});
item.classList.add('active');
item.scrollIntoView({ block: 'nearest' });
}
// 执行搜索
function handleSearch() {
const query = searchInput.value.trim();
if (!query || query.length < config.minQueryLength) {
showEmptyState();
return;
}
showSpinner();
// 模拟搜索延迟
setTimeout(() => {
const results = performSearch(query);
displayResults(results);
hideSpinner();
}, 300);
}
// 执行搜索
function performSearch(query) {
const results = [];
const lowerQuery = query.toLowerCase();
// 搜索 URL
const urlResults = searchData.urls
.filter(
(item) =>
item.title.toLowerCase().includes(lowerQuery) ||
item.category.toLowerCase().includes(lowerQuery)
)
.slice(0, config.maxResults);
if (urlResults.length > 0) {
results.push({
category: '网址导航',
items: urlResults,
});
}
// 搜索文章
const articleResults = searchData.articles
.filter(
(item) =>
item.title.toLowerCase().includes(lowerQuery) ||
(item.description && item.description.toLowerCase().includes(lowerQuery))
)
.slice(0, config.maxResults);
if (articleResults.length > 0) {
results.push({
category: '文章',
items: articleResults,
});
}
return results;
}
// 显示搜索结果
function displayResults(results) {
if (!results.length) {
searchResults.innerHTML = `
<div class="search-empty">
<i class="fas fa-search-minus"></i>
<p>未找到匹配 "${escapeHtml(searchInput.value)}" 的结果</p>
</div>
`;
return;
}
let html = '';
results.forEach((category) => {
html += `<div class="search-category">${category.category}</div>`;
category.items.forEach((item) => {
const highlightedTitle = highlightText(item.title, searchInput.value);
const highlightedDesc = item.description
? highlightText(item.description, searchInput.value)
: '';
html += `
<a href="${escapeHtml(item.url)}" class="search-item" target="${item.type === 'url' ? '_blank' : '_self'}">
<div class="search-item-title">${highlightedTitle}</div>
${item.type === 'url' ? `<div class="search-item-url">${escapeHtml(item.category)}</div>` : ''}
${highlightedDesc ? `<div class="search-item-desc">${highlightedDesc}</div>` : ''}
</a>
`;
});
});
searchResults.innerHTML = html;
}
// 高亮搜索词
function highlightText(text, query) {
if (!query) return escapeHtml(text);
const regex = new RegExp(`(${escapeRegExp(query)})`, 'gi');
return escapeHtml(text).replace(regex, '<span class="search-item-highlight">$1</span>');
}
// 转义正则表达式
function escapeRegExp(string) {
return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
}
// 显示空状态
function showEmptyState() {
searchResults.innerHTML = `
<div class="search-empty">
<i class="fas fa-search"></i>
<p>输入关键词开始搜索</p>
<p style="font-size: 13px; margin-top: 8px;">至少输入 ${config.minQueryLength} 个字符</p>
</div>
`;
}
// 显示/隐藏加载动画
function showSpinner() {
if (searchSpinner) {
searchSpinner.classList.add('active');
}
}
function hideSpinner() {
if (searchSpinner) {
searchSpinner.classList.remove('active');
}
}
// 打开搜索
function openSearch() {
if (searchOverlay) {
searchOverlay.classList.add('active');
isSearchOpen = true;
if (searchInput) {
setTimeout(() => searchInput.focus(), 100);
}
document.body.style.overflow = 'hidden';
}
}
// 关闭搜索
function closeSearch() {
if (searchOverlay) {
searchOverlay.classList.remove('active');
isSearchOpen = false;
if (searchInput) {
searchInput.value = '';
showEmptyState();
}
document.body.style.overflow = '';
}
}
// 切换搜索
function toggleSearch() {
if (isSearchOpen) {
closeSearch();
} else {
openSearch();
}
}
// 防抖函数
function debounce(func, wait) {
let timeout;
return function executedFunction(...args) {
const later = () => {
clearTimeout(timeout);
func(...args);
};
clearTimeout(timeout);
timeout = setTimeout(later, wait);
};
}
// HTML 转义
function escapeHtml(text) {
if (typeof text !== 'string') {
return '';
}
return text
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/"/g, '"')
.replace(/'/g, ''');
}
// 暴露全局方法
window.SiteSearch = {
init: init,
open: openSearch,
close: closeSearch,
toggle: toggleSearch,
};
// 自动初始化
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', init);
} else {
init();
}
})();