feat(scripts): novel details (chapters, free/locked, author, status) for the request page

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/request-server.js

@@ -6,6 +6,9 @@
 //   GET  /find?q=<title>           -> [{source, id, name, path, url, exact}] (cached 10 min)
 //   POST /fetch {id, path, name}   -> job; one download at a time
 //   GET  /jobs                     -> recent jobs, newest first
+//   GET  /info?id=&path=           -> {name, cover, author, status, genres, summary,
+//                                      chapters, free, latest} (cached 1 h, 3 at a time)
+//   GET  /library                  -> titles already in the library
 // Nightly (UPDATE_HOUR, local time) update-novels.js appends new free chapters.
 // Env: LIBRARY (novels dir, writable), PORT, NOVEL_PLUGIN_CACHE, UPDATE_HOUR.
 import { spawn } from 'child_process';
@@ -20,9 +23,36 @@ const LIBRARY = process.env.LIBRARY || '/library';
 const PORT = Number(process.env.PORT || 8090);
 const UPDATE_HOUR = Number(process.env.UPDATE_HOUR || 4);
 const FIND_TTL_MS = 10 * 60 * 1000;
+const INFO_TTL_MS = 60 * 60 * 1000;
+const INFO_CONCURRENCY = 3;
 const MAX_JOBS = 50;
 
 const found = new Map(); // query -> {at, results}
+const infos = new Map(); // id\npath -> {at, info}
+let infoRunning = 0;
+const infoWaiting = [];
+
+// At most INFO_CONCURRENCY detail lookups at once: each is a child process and a request
+// to the source site.
+async function info(id, novelPath) {
+  const cacheKey = `${id}\n${novelPath}`;
+  const hit = infos.get(cacheKey);
+  if (hit && Date.now() - hit.at < INFO_TTL_MS) return hit.info;
+  if (infoRunning >= INFO_CONCURRENCY)
+    await new Promise(resolve => infoWaiting.push(resolve));
+  infoRunning++;
+  try {
+    const { code, out, err } = await run('novel-info.js', [id, novelPath]);
+    if (code !== 0)
+      throw new Error(err.trim().split('\n').pop() || `exit ${code}`);
+    const result = JSON.parse(out.trim().split('\n').pop());
+    infos.set(cacheKey, { at: Date.now(), info: result });
+    return result;
+  } finally {
+    infoRunning--;
+    infoWaiting.shift()?.();
+  }
+}
 const jobs = []; // newest first
 let running = null;
 
@@ -147,6 +177,28 @@ http
         found.set(q.toLowerCase(), { at: Date.now(), results });
         return send(res, 200, results);
       }
+      if (req.method === 'GET' && url.pathname === '/info') {
+        const id = url.searchParams.get('id') || '';
+        const novelPath = url.searchParams.get('path') || '';
+        if (!id || !novelPath)
+          return send(res, 400, { error: 'id and path are required' });
+        try {
+          return send(res, 200, await info(id, novelPath));
+        } catch (e) {
+          return send(res, 502, {
+            error: String(e.message || e).slice(0, 300),
+          });
+        }
+      }
+      if (req.method === 'GET' && url.pathname === '/library') {
+        const titles = fs.existsSync(LIBRARY)
+          ? fs
+              .readdirSync(LIBRARY, { withFileTypes: true })
+              .filter(d => d.isDirectory())
+              .map(d => d.name)
+          : [];
+        return send(res, 200, titles);
+      }
       if (req.method === 'GET' && url.pathname === '/jobs') {
         return send(res, 200, jobs);
       }