46 lines
3.8 KiB
TypeScript
46 lines
3.8 KiB
TypeScript
import { createHash } from "node:crypto";
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import { readFile } from "node:fs/promises";
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import { chapters } from "../content/learning-skills/data";
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import { transaction } from "./db";
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import { putFile } from "./storage";
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function stableId(name: string) {
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const bytes=createHash("sha256").update(`prompt:learning-series:${name}`).digest().subarray(0,16);
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bytes[6]=(bytes[6]&15)|80;bytes[8]=(bytes[8]&63)|128;
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const hex=bytes.toString("hex");return `${hex.slice(0,8)}-${hex.slice(8,12)}-${hex.slice(12,16)}-${hex.slice(16,20)}-${hex.slice(20)}`;
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}
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// Explicit editorial publication, never part of the generic storage bootstrap.
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// Re-running updates these three authored posts without duplicating posts or media.
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export async function publishLearningSeries() {
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const path="public/learning-skills/cover.png";
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const cover=await readFile(path);const digest=createHash("sha256").update(cover).digest("hex");
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const storageKey=`editorial/learning-skills/${digest}.png`;
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const coverId=stableId("cover");
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await putFile(storageKey,path,"image/png");
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return transaction(async client=>{
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await client.query("SELECT pg_advisory_xact_lock(18131002)");
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await client.query(`INSERT INTO assets(id,kind,filename,storage_key,mime_type,byte_size,sha256,width,height)
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VALUES($1,'image','学习资料自己做-系列共用封面.png',$2,'image/png',$3,$4,1080,1440)
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ON CONFLICT(id) DO UPDATE SET storage_key=excluded.storage_key,byte_size=excluded.byte_size,sha256=excluded.sha256`,[coverId,storageKey,cover.length,digest]);
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const root=(await client.query(`INSERT INTO tags(id,parent_id,slug,name) VALUES($1,NULL,'learning-skills','学习工具')
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ON CONFLICT(parent_id,slug) DO UPDATE SET name=excluded.name RETURNING id`,[stableId("tag-root")])).rows[0].id;
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const published:string[]=[];
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for(const chapter of chapters){
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const child=(await client.query(`INSERT INTO tags(id,parent_id,slug,name) VALUES($1,$2,$3,$4)
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ON CONFLICT(parent_id,slug) DO UPDATE SET name=excluded.name RETURNING id`,[stableId(`tag-${chapter.key}`),root,chapter.number==="01"?"notes":chapter.number==="02"?"teaching":"english",chapter.number==="01"?"笔记复习":chapter.number==="02"?"教学资料":"英语学习"])).rows[0].id;
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const result=await client.query(`INSERT INTO posts(id,slug,kind,title,page_key,cover_asset_id) VALUES($1,$2,'article',$3,$4,$5)
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ON CONFLICT(slug) DO UPDATE SET title=excluded.title,cover_asset_id=excluded.cover_asset_id,updated_at=now()
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WHERE posts.page_key=excluded.page_key AND posts.kind='article' RETURNING id`,[stableId(chapter.key),chapter.slug,chapter.title,chapter.key,coverId]);
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if(!result.rows[0])throw new Error(`Publication slug is already used by another post: ${chapter.slug}`);
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const postId=result.rows[0].id;const captionId=stableId(`caption-${chapter.key}`);
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const caption=`学习资料自己做 · 第 ${chapter.number} 辑\n${chapter.subtitle}。三篇共用系列封面，每篇 8 页，介绍 10 项工具。\n\n${chapter.skills.map((skill,i)=>`${String(i+1).padStart(2,"0")} ${skill.name} — ${skill.title}`).join("\n")}\n\n根据 GitHub 项目说明整理，尚未逐项安装实测。内页小样为排版示意；可在末页访问全部来源。`;
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await client.query("INSERT INTO assets(id,kind,body) VALUES($1,'text',$2) ON CONFLICT(id) DO UPDATE SET body=excluded.body",[captionId,caption]);
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await client.query(`INSERT INTO post_assets(post_id,asset_id,position,role) VALUES($1,$2,0,'content'),($1,$3,1,'caption')
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ON CONFLICT(post_id,position) DO UPDATE SET asset_id=excluded.asset_id,role=excluded.role`,[postId,coverId,captionId]);
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await client.query("INSERT INTO post_tags(post_id,tag_id) VALUES($1,$2) ON CONFLICT DO NOTHING",[postId,child]);
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published.push(chapter.slug);
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}
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return {published,coverId};
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});
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}
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