Give reference image packs distinct index covers while retaining originals

scripts/publish-document-covers.mjs

@@ -1,4 +1,6 @@
 /** Run INSIDE the server using auth-cli.cjs run; no content or credentials are exported. */
+import {createRequire} from 'node:module';
+import {createHash} from 'node:crypto';
 import {readFile,writeFile,mkdir} from 'node:fs/promises';import path from 'node:path';
 const base=process.env.PROMPT_LOCAL_API||'http://127.0.0.1:3000',dir=process.env.PROMPT_COVER_BUNDLE||'/tmp/prompt-document-covers';
 const catalog=JSON.parse(await readFile(path.join(dir,'catalog.json'),'utf8')),stateFile=process.env.PROMPT_COVER_STATE||'/tmp/prompt-document-cover-state.json';
@@ -22,5 +24,19 @@ for(const n of catalog.notes){if(state.done.includes(n.id))continue;const entry=
  state.done.push(n.id);await save();
 }
 for(const n of [...catalog.roots,...catalog.entries.map(id=>({id}))]){const entry=await read(n.id);await snapshot(entry);await api('/api/notes/'+n.id,json('PATCH',{tags:await labels(entry,n.topic?[n.topic]:[],['document-entry']),revision:entry.revision}));}
-for(const slug of catalog.references){const r=await fetch(base+'/p/'+slug,{redirect:'manual'});const location=r.headers.get('location');if(!location?.startsWith('/explore/'))throw Error('Reference post unavailable');const entry=await read(location.split('/').at(-1));await snapshot(entry);await api('/api/notes/'+entry.id,json('PATCH',{tags:await labels(entry,['贴纸'],['reference-image']),revision:entry.revision}));}
+for(const slug of catalog.references){
+ const r=await fetch(base+'/p/'+slug,{redirect:'manual'}),location=r.headers.get('location');if(!location?.startsWith('/explore/'))throw Error('Reference post unavailable');
+ const entry=await read(location.split('/').at(-1));await snapshot(entry);
+ let cover=state.assets['reference-cover:'+slug];
+ if(!cover){
+  const sharp=createRequire('/app/package.json')('sharp'),source=state.snapshots[entry.id].media.filter(m=>m.kind==='image'),cols=source.length>6?3:2,rows=Math.ceil(source.length/cols),cellW=Math.floor(756/cols),cellH=Math.min(295,Math.floor(815/rows)),parts=[];
+  for(let i=0;i<source.length;i++){const url=new URL(source[i].url,base);if(url.origin!==new URL(base).origin)throw Error('Unexpected reference origin');const image=await fetch(url);if(!image.ok)throw Error('Reference image unavailable');parts.push({input:await sharp(Buffer.from(await image.arrayBuffer())).resize(cellW-18,cellH-18,{fit:'contain',background:'#f4f0e6'}).png().toBuffer(),left:72+i%cols*cellW,top:245+Math.floor(i/cols)*cellH});}
+  const title=slug.endsWith('-original')?'原始贴纸素材':'画风参考素材';
+  const label=`<svg xmlns="http://www.w3.org/2000/svg" width="900" height="1200"><g fill="#31473c" font-family="Arial,'Noto Sans CJK SC',sans-serif"><text x="72" y="87" font-size="24" letter-spacing="3">PROMPT / REFERENCES</text><text x="68" y="175" font-size="62" font-weight="600">${title}</text><text x="72" y="218" font-size="22">${source.length} 张原始图片 · 本页为索引封面</text><path d="M72 1104H828" stroke="#9da991"/><text x="72" y="1152" font-size="21">参考图 / 贴纸 · 原件在图包中保留</text></g></svg>`;
+  const bytes=await sharp({create:{width:900,height:1200,channels:3,background:'#f4f0e6'}}).composite([...parts,{input:Buffer.from(label),left:0,top:0}]).png().toBuffer();
+  cover=await upload('reference-cover:'+slug,bytes,slug+'-index.png');state.referenceHashes||={};state.referenceHashes[entry.id]=createHash('sha256').update(bytes).digest('hex');await save();
+ }
+ const assets=[{id:cover,role:'content'},...entry.assets].filter((a,i,arr)=>arr.findIndex(b=>b.id===a.id)===i);
+ await api('/api/notes/'+entry.id,json('PUT',{title:entry.title,description:entry.description,markdown:entry.editableMarkdown,tags:await labels(entry,['贴纸'],['reference-image']),assets,coverAssetId:cover,revision:entry.revision}));
+}
 console.log(JSON.stringify({independentCovers:catalog.notes.length,rootEntries:catalog.roots.length+catalog.entries.length,referencePosts:catalog.references.length,contentExported:false}));