nex_docus/frontend/src/pages/Preview/FileSharePage.jsx

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import { useState, useEffect, useRef } from 'react'
import { useNavigate, useParams } from 'react-router-dom'
import { Layout, Modal, Input, Spin, Button, Space } from 'antd'
import { CloseOutlined, LockOutlined, FileTextOutlined, FilePdfOutlined, VerticalAlignTopOutlined, CloudDownloadOutlined } from '@ant-design/icons'
import ReactMarkdown from 'react-markdown'
import remarkGfm from 'remark-gfm'
import rehypeHighlight from 'rehype-highlight'
import rehypeSlug from 'rehype-slug'
import 'highlight.js/styles/github.css'
import GithubSlugger from 'github-slugger'
import Toast from '@/components/Toast/Toast'
import FloatingToc from '@/components/FloatingToc/FloatingToc'
import VirtualPDFViewer from '@/components/PDFViewer/VirtualPDFViewer'
import {
getFileSharePublicInfo,
verifyFileSharePassword,
getFileShareContent,
exportFileSharePDF,
} from '@/api/share'
import './PreviewPage.css'
const { Content } = Layout
function FileSharePage() {
const { shareCode } = useParams()
const navigate = useNavigate()
const contentRef = useRef(null)
const [pdfToolbarTarget, setPdfToolbarTarget] = useState(null)
const [shareInfo, setShareInfo] = useState(null)
const [contentInfo, setContentInfo] = useState(null)
const [loading, setLoading] = useState(true)
const [isMobile, setIsMobile] = useState(false)
const [tocItems, setTocItems] = useState([])
const [passwordModalVisible, setPasswordModalVisible] = useState(false)
const [password, setPassword] = useState('')
useEffect(() => {
loadFileShare()
}, [shareCode])
useEffect(() => {
const checkMobile = () => setIsMobile(window.innerWidth < 768)
checkMobile()
window.addEventListener('resize', checkMobile)
return () => window.removeEventListener('resize', checkMobile)
}, [])
useEffect(() => {
const markdownContent = contentInfo?.type === 'markdown' ? (contentInfo.content || '') : ''
if (!markdownContent) {
setTocItems([])
return
}
const slugger = new GithubSlugger()
const headings = []
markdownContent.split('\n').forEach((line) => {
const match = line.match(/^(#{1,6})\s+(.+)$/)
if (!match) return
const level = match[1].length
const title = match[2].trim()
const key = slugger.slug(title)
headings.push({ key: `#${key}`, href: `#${key}`, title, level })
})
setTocItems(headings)
}, [contentInfo])
const handleClose = () => {
if (window.history.length > 1) {
navigate(-1)
return
}
navigate('/')
}
const loadFileShare = async () => {
setLoading(true)
try {
const infoRes = await getFileSharePublicInfo(shareCode)
setShareInfo(infoRes.data)
if (infoRes.data.has_password) {
setContentInfo(null)
setPasswordModalVisible(true)
setLoading(false)
return
}
const contentRes = await getFileShareContent(shareCode)
setContentInfo(contentRes.data)
} catch (error) {
console.error('Load file share error:', error)
Toast.error('加载失败', '分享链接不存在或已失效')
} finally {
setLoading(false)
}
}
const handleVerifyPassword = async () => {
if (!password.trim()) {
Toast.warning('提示', '请输入访问密码')
return
}
try {
await verifyFileSharePassword(shareCode, password)
const contentRes = await getFileShareContent(shareCode, password)
setContentInfo(contentRes.data)
setPasswordModalVisible(false)
Toast.success('验证成功')
} catch (error) {
Toast.error('访问密码错误')
}
}
const handleExportPDF = () => {
if (!contentInfo || contentInfo.type === 'pdf') return
window.open(exportFileSharePDF(shareCode), '_blank')
}
const scrollContentToTop = () => {
if (contentRef.current) {
contentRef.current.scrollTo({ top: 0, behavior: 'smooth' })
}
}
const isExternalHref = (href) => {
return Boolean(href && (/^[a-z][a-z\d+.-]*:/i.test(href) || href.startsWith('//')))
}
const isInternalFileHref = (href) => {
if (!href) return false
if (href.startsWith('#')) return false
if (isExternalHref(href)) return false
const pathOnly = href.split(/[?#]/)[0]
return pathOnly.endsWith('.md') || pathOnly.toLowerCase().endsWith('.pdf')
}
const handleMarkdownLink = (e, href) => {
if (!isInternalFileHref(href)) return
e.preventDefault()
Toast.error('无法打开内部文件链接', '单文件分享模式不支持跳转到其他内部文件')
}
const markdownComponents = {
a: ({ node, href, children, ...props }) => {
const isExternal = isExternalHref(href)
return (
<a
href={href}
onClick={(e) => handleMarkdownLink(e, href)}
target={isExternal ? '_blank' : undefined}
rel={isExternal ? 'noopener noreferrer' : undefined}
{...props}
>
{children}
</a>
)
},
}
const isHeaderPdf = contentInfo?.type === 'pdf'
const HeaderIcon = isHeaderPdf ? FilePdfOutlined : FileTextOutlined
const headerLabel = contentInfo?.filename || '文件分享'
return (
<div className="preview-page file-share-page">
<div className="file-share-shell">
<Layout className="file-share-content-layout">
<Content className="file-share-content" ref={contentRef}>
<div className="preview-content-header file-share-content-header">
<button
type="button"
className="project-back-button"
onClick={handleClose}
aria-label="关闭文档分享"
>
<CloseOutlined />
</button>
<h3 className="preview-header-title">
<HeaderIcon className="preview-header-icon" style={isHeaderPdf ? { color: '#f5222d' } : undefined} />
<span className="preview-header-text">{headerLabel}</span>
</h3>
{contentInfo?.type === 'markdown' && (
<Space className="preview-header-actions">
<Button
icon={<VerticalAlignTopOutlined />}
onClick={scrollContentToTop}
size="small"
>
回到顶部
</Button>
<Button
icon={<CloudDownloadOutlined />}
onClick={handleExportPDF}
size="small"
>
下载PDF
</Button>
</Space>
)}
{contentInfo?.type === 'pdf' && <div className="preview-header-actions pdf-header-toolbar" ref={setPdfToolbarTarget} />}
</div>
{loading ? (
<div className="preview-loading">
<Spin size="large">
<div style={{ marginTop: 16 }}>加载中...</div>
</Spin>
</div>
) : (
<div className={`preview-content-wrapper ${contentInfo?.type === 'pdf' ? 'pdf-mode' : ''}`}>
{contentInfo?.type === 'pdf' ? (
<VirtualPDFViewer
url={contentInfo.document_url}
filename={contentInfo.filename}
toolbarTarget={pdfToolbarTarget}
/>
) : (
<div className="markdown-body">
<ReactMarkdown
remarkPlugins={[remarkGfm]}
rehypePlugins={[rehypeSlug, rehypeHighlight]}
components={markdownComponents}
>
{contentInfo?.content || ''}
</ReactMarkdown>
</div>
)}
</div>
)}
</Content>
{!isMobile && contentInfo?.type === 'markdown' && (
<FloatingToc
items={tocItems}
getContainer={() => contentRef.current}
/>
)}
</Layout>
</div>
<Modal
title={<div style={{ display: 'flex', alignItems: 'center', gap: 8 }}><LockOutlined /><span>访问验证</span></div>}
open={passwordModalVisible}
onOk={handleVerifyPassword}
onCancel={() => setPasswordModalVisible(false)}
okText="验证"
cancelText="取消"
maskClosable={false}
>
<div style={{ marginTop: 16 }}>
<p>该文件分享需要访问密码请输入密码后继续浏览</p>
<Input.Password
placeholder="请输入访问密码"
value={password}
onChange={(e) => setPassword(e.target.value)}
onPressEnter={handleVerifyPassword}
prefix={<LockOutlined />}
/>
</div>
</Modal>
</div>
)
}
export default FileSharePage