Expose fixed version navigation and author-only withdrawal controls

apps/waterfall-wiki/src/pages/documents/[id].tsx

@@ -1,6 +1,6 @@
 import type { GetServerSideProps } from 'next';
 import type { Guidance } from '@/content/guides/catalog';
 import styles from '@/styles/documents.module.css';
-type Props={doc:Guidance;links:(Guidance['links'][number]&{resolved:boolean})[]};
-export default function Read({doc,links}:Props){return <main className={styles.page}><nav><a href="/documents">用户文档</a> · <a href="/write">编辑 / 发布</a></nav><h1>{doc.title}</h1><p>{doc.kind} · {doc.id} · 固定版本 {doc.revision}</p><p>{doc.summary}</p><h2>适用条件</h2><p>{doc.applies}</p><p className={styles.body}>{doc.body}</p><ol>{doc.steps.map((s,i)=><li key={i}>{s}</li>)}</ol><h2>条件链接</h2>{links.map((l,i)=><article key={i}><p>条件：{l.when} · {l.relation}</p>{l.resolved?<a href={(l.target.startsWith('user-')?'/documents/':'/guide/')+l.target+'?revision='+l.revision}>{l.label} · v{l.revision}</a>:<p>{l.label}：精确版本缺失，请跳过</p>}</article>)}<h2>检查项</h2><ul>{doc.checks.map((s,i)=><li key={i}>{s}</li>)}</ul><a href={'/api/documents/'+doc.id+'?revision='+doc.revision+'&format=xml'}>读取规范 XML</a><p><button onClick={async()=>{if(!confirm('撤下后仍保留固定历史版本，确定撤下？'))return;const r=await fetch('/api/documents/'+doc.id,{method:'DELETE'});alert(r.ok?'已撤下，历史版本仍可访问':(await r.json()).error);}}>作者撤下文档</button></p></main>;}
-export const getServerSideProps:GetServerSideProps<Props>=async({params,query,res})=>{res.setHeader('Cache-Control','no-store');const revision=query.revision;if(revision!==undefined&&(typeof revision!=='string'||! /^[1-9][0-9]{0,9}$/.test(revision)||Number(revision)>2147483647))return {notFound:true};const {resolveDocument}=await import('@/lib/guidance-store');const doc=await resolveDocument(String(params?.id),revision===undefined?undefined:Number(revision));if(!doc)return {notFound:true};const links=await Promise.all(doc.links.map(async l=>({...l,resolved:!!await resolveDocument(l.target,l.revision)})));return {props:{doc,links}};};
+type Props={canEdit:boolean;versions:number[];doc:Guidance;links:(Guidance['links'][number]&{resolved:boolean})[]};
+export default function Read({doc,links,canEdit,versions}:Props){return <main className={styles.page}><nav><a href="/documents">用户文档</a> · <a href="/write">{canEdit?'编辑我的文档':'发布文档'}</a></nav><h1>{doc.title}</h1><p>{doc.kind} · {doc.id} · 固定版本 {doc.revision}</p><p>版本：{versions.map(v=><a key={v} href={'/documents/'+doc.id+'?revision='+v}> v{v} </a>)}</p><p>{doc.summary}</p><h2>适用条件</h2><p>{doc.applies}</p><p className={styles.body}>{doc.body}</p><ol>{doc.steps.map((s,i)=><li key={i}>{s}</li>)}</ol><h2>条件链接</h2>{links.map((l,i)=><article key={i}><p>条件：{l.when} · {l.relation}</p>{l.resolved?<a href={(l.target.startsWith('user-')?'/documents/':'/guide/')+l.target+'?revision='+l.revision}>{l.label} · v{l.revision}</a>:<p>{l.label}：精确版本缺失，请跳过</p>}</article>)}<h2>检查项</h2><ul>{doc.checks.map((s,i)=><li key={i}>{s}</li>)}</ul><a href={'/api/documents/'+doc.id+'?revision='+doc.revision+'&format=xml'}>读取规范 XML</a>{canEdit&&<p><button onClick={async()=>{if(!confirm('撤下后仍保留固定历史版本，确定撤下？'))return;const r=await fetch('/api/documents/'+doc.id,{method:'DELETE'});alert(r.ok?'已撤下，历史版本仍可访问':(await r.json()).error);}}>作者撤下文档</button></p>}</main>;}
+export const getServerSideProps:GetServerSideProps<Props>=async({params,query,res,req})=>{res.setHeader('Cache-Control','no-store');const revision=query.revision;if(revision!==undefined&&(typeof revision!=='string'||! /^[1-9][0-9]{0,9}$/.test(revision)||Number(revision)>2147483647))return {notFound:true};const {resolveDocument}=await import('@/lib/guidance-store');const doc=await resolveDocument(String(params?.id),revision===undefined?undefined:Number(revision));if(!doc)return {notFound:true};const links=await Promise.all(doc.links.map(async l=>({...l,resolved:!!await resolveDocument(l.target,l.revision)})));const {db}=await import('@/lib/db');const {currentAccount}=await import('@/lib/account');const user=await currentAccount(new Request('http://internal',{headers:{cookie:req.headers.cookie||''}}));const owner=await db().query('SELECT owner_id FROM guidance_documents WHERE id=$1',[doc.id]);const rows=await db().query('SELECT revision FROM guidance_revisions WHERE document_id=$1 ORDER BY revision DESC',[doc.id]);return {props:{doc,links,canEdit:!!user&&owner.rows[0]?.owner_id===user.id,versions:rows.rows.map(r=>r.revision)}};};