前端:React 19 + Vite 8 + Tailwind 4 博客与管理后台 SPA

- 渲染管线(§8.2):react-markdown + remark-gfm + rehype-sanitize
  (GitHub schema 扩展 hljs class 与 checked)+ rehype-highlight 纯 class
  高亮;链接强制 target=_blank + rel=nofollow noopener noreferrer;
  schema 快照与恶意 Markdown 冒烟测试(vitest 6 用例)
- 编辑器:CodeMirror 6 源码编辑 + 分屏实时预览 + 工具栏 +
  粘贴/拖拽图片上传;slug 首存定稿(冲突 409 就地高亮)、
  摘要留空自动截取、2s 防抖自动保存
- 页面:博客首页(置顶/分页/标签云)、详情(面包屑/上一篇下一篇)、
  标签页、登录、管理列表/回收站/设置/改密、404
- lib:api 客户端(统一包络 + 内存态 CSRF,禁 localStorage)、
  AuthContext(/api/me 重取)、暗色主题(class 切换 + 系统跟随)
- index.html 内嵌 Go template 占位符供服务端 meta 注入;
  vite base 固定 '/'(防深链白屏);/api 代理 127.0.0.1:8080
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import { Link, useParams } from 'react-router'
import { useQuery } from '@tanstack/react-query'
import { AlertTriangle } from 'lucide-react'
import { api } from '../lib/api'
import type { NoteDetail } from '../lib/api'
import { useAuth } from '../lib/auth'
import MarkdownViewer from '../components/MarkdownViewer'
import { formatDate } from '../lib/utils'
export default function Note() {
const { slug = '' } = useParams()
const { authenticated } = useAuth()
const { data: note, isLoading, error } = useQuery({
queryKey: ['note', slug],
queryFn: () => api<NoteDetail>(`/api/notes/${encodeURIComponent(slug)}`),
retry: false,
})
if (isLoading) return <p className="py-12 text-center text-zinc-400">加载中…</p>
if (error || !note) {
return (
<div className="py-12 text-center">
<p className="text-4xl font-bold text-zinc-300 dark:text-zinc-700">404</p>
<p className="mt-2 text-zinc-500">笔记不存在或未公开</p>
<Link to="/" className="mt-4 inline-block text-sm text-blue-600 hover:underline">
← 返回首页
</Link>
</div>
)
}
const privatePreview = note.status === 'private'
return (
<article>
<nav className="mb-4 text-xs text-zinc-400">
<Link to="/" className="hover:text-zinc-600">首页</Link>
<span className="mx-1.5">/</span>
<span>{note.title}</span>
</nav>
{privatePreview && authenticated && (
<div className="mb-6 flex items-center gap-2 rounded-lg border border-amber-300 bg-amber-50 px-4 py-2.5 text-sm text-amber-800 dark:border-amber-800 dark:bg-amber-950 dark:text-amber-300">
<AlertTriangle size={16} />
私有预览:此笔记未公开,仅管理员可见
</div>
)}
<header className="mb-8">
<h1 className="text-3xl font-bold leading-tight">{note.title}</h1>
<div className="mt-2 flex flex-wrap items-center gap-3 text-xs text-zinc-400">
<time>{formatDate(note.created_at)}</time>
{note.tags.map((t) => (
<Link
key={t}
to={`/tags/${encodeURIComponent(t)}`}
className="rounded-full bg-zinc-100 px-2 py-0.5 hover:bg-zinc-200 dark:bg-zinc-800 dark:hover:bg-zinc-700"
>
#{t}
</Link>
))}
</div>
</header>
<MarkdownViewer source={note.content} />
<nav className="mt-12 flex justify-between gap-4 border-t border-zinc-100 pt-6 text-sm dark:border-zinc-900">
{note.prev ? (
<Link
to={`/notes/${encodeURIComponent(note.prev.slug)}`}
className="text-zinc-600 hover:text-blue-600 dark:text-zinc-400"
>
← {note.prev.title}
</Link>
) : (
<span />
)}
{note.next ? (
<Link
to={`/notes/${encodeURIComponent(note.next.slug)}`}
className="text-right text-zinc-600 hover:text-blue-600 dark:text-zinc-400"
>
{note.next.title} →
</Link>
) : (
<span />
)}
</nav>
</article>
)
}