MangaParty: self-hosted manga/comic/webtoon reader
Zero-dependency Node server + plain HTML/JS frontend. - Library is a folder tree (Manga/Book/Chapter/pages), indexed in place; page roles (cover, double, extra, rotation) are file name tags - Accounts with per-user progress, reading settings, follows and new-chapter notifications (in-app + optional webhook) - Reader with Flow, Page and Book modes, pointer-anchored page zoom, tap zones, auto-hiding controls, chapter picker, page preloading - Multiple versions per chapter with community votes - Docker image and compose file - Demo library generator (tools/make-dummy.js) - Docs: architecture, library format, import, scraper guide
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'use strict';
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/*
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* MangaParty: a no-frills, self-hosted manga reader. No dependencies, just `node server.js`.
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*
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* Environment:
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* PORT=8080 LIBRARY=./library DATA=./data
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* SIGNUP=closed|open (the very first account can always be created and becomes admin)
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* SCAN_INTERVAL=10 minutes between automatic library rescans, 0 = off
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* COOKIE_SECURE=1 mark the session cookie Secure (when served over HTTPS)
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*/
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const http = require('http'), fs = require('fs'), path = require('path'), crypto = require('crypto');
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const { scanLibrary } = require('./library');
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const PORT = +process.env.PORT || 8080;
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const LIB = path.resolve(process.env.LIBRARY || 'library');
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const DATA = path.resolve(process.env.DATA || 'data');
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const OPEN_SIGNUP = process.env.SIGNUP === 'open';
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const SCAN_MINUTES = +(process.env.SCAN_INTERVAL || 10);
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const SECURE_COOKIE = process.env.COOKIE_SECURE === '1';
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const PUB = path.join(__dirname, 'public');
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const IMG = /\.(jpe?g|png|webp|gif|avif|bmp)$/i;
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const MIME = {
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'.html': 'text/html; charset=utf-8', '.js': 'text/javascript; charset=utf-8', '.css': 'text/css; charset=utf-8',
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'.json': 'application/json', '.webmanifest': 'application/manifest+json', '.svg': 'image/svg+xml', '.ico': 'image/x-icon',
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'.png': 'image/png', '.jpg': 'image/jpeg', '.jpeg': 'image/jpeg', '.webp': 'image/webp', '.gif': 'image/gif', '.avif': 'image/avif', '.bmp': 'image/bmp',
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};
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// ---------- storage: one JSON file, written atomically ----------
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fs.mkdirSync(DATA, { recursive: true });
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const DB_FILE = path.join(DATA, 'db.json'), CACHE_FILE = path.join(DATA, 'scan-cache.json');
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const db = { users: {}, sessions: {}, progress: {}, follows: {}, notes: {}, votes: {}, known: {} };
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// A corrupt db.json stops the server instead of silently starting empty and overwriting it.
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if (fs.existsSync(DB_FILE)) Object.assign(db, JSON.parse(fs.readFileSync(DB_FILE, 'utf8')));
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function writeAtomic(file, text) { fs.writeFileSync(file + '.tmp', text); fs.renameSync(file + '.tmp', file); }
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let saveTimer = null;
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function save() { saveTimer = saveTimer || setTimeout(flush, 500); }
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function flush() { clearTimeout(saveTimer); saveTimer = null; writeAtomic(DB_FILE, JSON.stringify(db)); }
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for (const sig of ['SIGINT', 'SIGTERM']) process.on(sig, () => { flush(); process.exit(0); });
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class HttpError extends Error { constructor(code, msg) { super(msg); this.code = code; } }
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function bad(code, msg) { throw new HttpError(code, msg); }
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// ---------- users & sessions ----------
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const sha = s => crypto.createHash('sha256').update(s).digest('hex');
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function hashPw(pw) { const salt = crypto.randomBytes(16).toString('hex'); return salt + ':' + crypto.scryptSync(pw, salt, 32).toString('hex'); }
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function checkPw(pw, stored) {
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const [salt, hex] = String(stored).split(':'), want = Buffer.from(hex || '', 'hex'), got = crypto.scryptSync(pw, salt || '', 32);
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return want.length === got.length && crypto.timingSafeEqual(want, got);
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}
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const DUMMY_HASH = hashPw('x');
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const DEFAULTS = { startMode: 'last', lastMode: 'page', adapt: true, skipExtras: false, skipCovers: false, zoom: {}, webhook: '' };
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const settingsOf = u => ({ ...DEFAULTS, ...u.settings, zoom: { ...(u.settings && u.settings.zoom) } });
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function createUser(name, pw, admin, replace) {
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name = String(name || '').trim().toLowerCase(); pw = String(pw || '');
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if (!/^[a-z0-9_.-]{1,32}$/.test(name)) bad(400, 'User names may only use a-z, 0-9, "_", "." and "-" (max. 32).');
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if (pw.length < 4) bad(400, 'The password needs at least 4 characters.');
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const old = db.users[name];
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if (old && !replace) bad(409, 'That user name is taken.');
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db.users[name] = { settings: {}, ...old, name, hash: hashPw(pw), admin: !!admin, created: old ? old.created : Date.now() };
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save();
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return db.users[name];
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}
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function startSession(res, user) {
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const token = crypto.randomBytes(32).toString('base64url');
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db.sessions[sha(token)] = { u: user.name, t: Date.now() };
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save();
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res.setHeader('Set-Cookie', `sid=${token}; Path=/; HttpOnly; SameSite=Lax; Max-Age=31536000${SECURE_COOKIE ? '; Secure' : ''}`);
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}
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const tokenOf = req => { const m = /(?:^|;\s*)sid=([^;]+)/.exec(req.headers.cookie || ''); return m ? m[1] : null; };
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function userOf(req) { const t = tokenOf(req), s = t && db.sessions[sha(t)]; return (s && db.users[s.u]) || null; }
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for (const [k, s] of Object.entries(db.sessions)) if (Date.now() - s.t > 365 * 864e5 || !db.users[s.u]) delete db.sessions[k];
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// ---------- library index ----------
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let lib = { mangas: [], byId: new Map() }, scanning = null, scanState = {}, scanCache = {};
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try { scanCache = JSON.parse(fs.readFileSync(CACHE_FILE, 'utf8')); } catch { /* first run */ }
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function rescan(full) {
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scanning = scanning || (async () => {
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const t0 = Date.now();
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try {
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const { index, cache } = await scanLibrary(LIB, full ? {} : scanCache);
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announce(index);
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lib = index; scanCache = cache;
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writeAtomic(CACHE_FILE, JSON.stringify(cache));
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let chapters = 0, pages = 0;
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for (const m of index.mangas) for (const ch of m.chapters) { chapters++; for (const v of ch.versions) pages += v.pages.length; }
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scanState = { at: Date.now(), ms: Date.now() - t0, mangas: index.mangas.length, chapters, pages, error: null };
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console.log(`[scan] ${index.mangas.length} manga, ${chapters} chapters, ${pages} pages in ${scanState.ms} ms`);
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} catch (e) {
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scanState = { ...scanState, at: Date.now(), error: e.message };
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console.error('[scan] failed:', e.message);
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} finally { scanning = null; }
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})();
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return scanning;
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}
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// New chapter ids (compared with every id ever seen for that manga) notify the followers.
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function announce(index) {
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for (const m of index.mangas) {
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const known = db.known[m.id];
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if (!known) { db.known[m.id] = m.chapters.map(c => c.id); save(); continue; }
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const seen = new Set(known), fresh = m.chapters.filter(c => !seen.has(c.id));
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if (!fresh.length) continue;
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db.known[m.id] = known.concat(fresh.map(c => c.id));
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for (const [name, follows] of Object.entries(db.follows)) if (follows[m.id] && db.users[name]) notify(db.users[name], m, fresh);
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save();
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}
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}
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function notify(user, m, chapters) {
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const notes = (db.notes[user.name] = db.notes[user.name] || []);
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for (const ch of chapters) {
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notes.push({ id: crypto.randomBytes(6).toString('hex'), t: Date.now(), m: m.id, c: ch.id, text: `${m.title} · ${ch.label}${ch.title ? ': ' + ch.title : ''}`, read: false });
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}
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if (notes.length > 200) notes.splice(0, notes.length - 200);
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const hook = settingsOf(user).webhook;
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if (hook) {
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const body = `New in ${m.title}: ${chapters.map(c => c.label + (c.title ? ' ' + c.title : '')).join(', ')}`;
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fetch(hook, { method: 'POST', body, headers: { 'Content-Type': 'text/plain; charset=utf-8', Title: 'MangaParty' }, signal: AbortSignal.timeout(10000) })
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.catch(e => console.warn(`[notify] webhook of ${user.name} failed: ${e.message}`));
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}
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}
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// ---------- view helpers ----------
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const url = rel => (rel ? 'lib/' + rel.split('/').map(encodeURIComponent).join('/') : null);
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const mangaOf = id => lib.byId.get(String(id)) || bad(404, 'Manga not found');
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const chapterOf = (m, id) => m.chapterById.get(String(id)) || bad(404, 'Chapter not found');
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const progressOf = (u, m) => (db.progress[u.name] && db.progress[u.name][m.id]) || {};
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const unreadOf = u => (db.notes[u.name] || []).filter(n => !n.read).length;
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const admin = u => u.admin || bad(403, 'Admins only');
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// Versions sorted by the sum of all user votes; ties go to the higher "priority" in chapter.json, then folder order.
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function ranked(m, ch) {
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const votes = (db.votes[m.id] && db.votes[m.id][ch.id]) || {};
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return ch.versions
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.map((v, i) => ({ v, i, score: Object.values(votes[v.id] || {}).reduce((a, b) => a + b, 0) }))
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.sort((a, b) => b.score - a.score || (+b.v.meta.priority || 0) - (+a.v.meta.priority || 0) || a.i - b.i);
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}
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function versionsOf(m, ch, u) {
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const votes = (db.votes[m.id] && db.votes[m.id][ch.id]) || {};
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return ranked(m, ch).map(({ v, score }) => ({
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id: v.id, source: v.source, sourceUrl: v.sourceUrl, pages: v.pages.length, added: v.added, score, my: (votes[v.id] && votes[v.id][u.name]) || 0,
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}));
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}
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function continueOf(m, prog, s) {
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const ok = c => !(s.skipExtras && c.extra);
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let last = null;
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for (const ch of m.chapters) { const p = prog[ch.id]; if (p && (!last || p.t > last.p.t)) last = { ch, p }; }
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if (!last) { const first = m.chapters.find(ok) || m.chapters[0]; return { c: first.id, text: 'Start reading · ' + first.label }; }
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if (!last.p.done) return { c: last.ch.id, v: last.p.v, text: `Continue · ${last.ch.label} · page ${last.p.p + 1}` };
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const next = m.chapters.slice(m.chapters.indexOf(last.ch) + 1).find(ok);
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return next ? { c: next.id, text: 'Read next · ' + next.label } : { c: last.ch.id, v: last.p.v, text: 'Read again · ' + last.ch.label };
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}
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function neighbour(m, ch, step, s) {
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for (let i = m.chapters.indexOf(ch) + step; i >= 0 && i < m.chapters.length; i += step) {
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const c = m.chapters[i];
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if (!(s.skipExtras && c.extra)) return { id: c.id, label: c.label, title: c.title };
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}
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return null;
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}
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// ---------- API ----------
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const PUBLIC = new Set(['/api/auth', '/api/login', '/api/signup']);
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const routes = {
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'GET /api/auth': () => ({ firstRun: !Object.keys(db.users).length, signup: OPEN_SIGNUP }),
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'POST /api/signup': ({ b, res }) => {
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const first = !Object.keys(db.users).length;
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if (!first && !OPEN_SIGNUP) bad(403, 'Sign-up is closed. Ask an admin for an account.');
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startSession(res, createUser(b.name, b.password, first));
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return { ok: true };
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},
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'POST /api/login': ({ b, res }) => {
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const user = db.users[String(b.name || '').trim().toLowerCase()], pw = String(b.password || '');
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if (!checkPw(pw, user ? user.hash : DUMMY_HASH) || !user) bad(403, 'Wrong user name or password.');
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startSession(res, user);
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return { ok: true };
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},
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'POST /api/logout': ({ req, res }) => {
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delete db.sessions[sha(tokenOf(req))];
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save();
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res.setHeader('Set-Cookie', 'sid=; Path=/; HttpOnly; SameSite=Lax; Max-Age=0');
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return { ok: true };
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},
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'GET /api/me': ({ u }) => ({ name: u.name, admin: !!u.admin, settings: settingsOf(u), unread: unreadOf(u) }),
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'POST /api/settings': ({ u, b }) => {
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if (typeof b.webhook === 'string' && b.webhook.trim() && !/^https?:\/\/\S+$/i.test(b.webhook.trim())) bad(400, 'The webhook must be an http(s) URL.');
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const s = (u.settings = u.settings || {});
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if (['last', 'flow', 'page', 'book'].includes(b.startMode)) s.startMode = b.startMode;
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if (['flow', 'page', 'book'].includes(b.lastMode)) s.lastMode = b.lastMode;
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for (const k of ['adapt', 'skipExtras', 'skipCovers']) if (typeof b[k] === 'boolean') s[k] = b[k];
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if (b.zoom && typeof b.zoom === 'object') {
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s.zoom = {};
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for (const k of ['flow', 'page', 'book', 'strip']) if (+b.zoom[k] > 0) s.zoom[k] = Math.min(8, Math.max(0.1, +b.zoom[k]));
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}
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if (typeof b.webhook === 'string') s.webhook = b.webhook.trim().slice(0, 500);
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save();
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return { settings: settingsOf(u) };
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},
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'POST /api/password': ({ u, b }) => {
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if (!checkPw(String(b.old || ''), u.hash)) bad(403, 'The current password is wrong.');
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createUser(u.name, b.new, u.admin, true);
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return { ok: true };
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},
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'GET /api/library': ({ u }) => {
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const prog = db.progress[u.name] || {}, fol = db.follows[u.name] || {}, notes = (db.notes[u.name] || []).filter(n => !n.read);
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return {
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scanning: !!scanning && !lib.mangas.length,
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mangas: lib.mangas.map(m => {
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const p = prog[m.id] || {};
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return {
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id: m.id, title: m.title, cover: url(m.cover), direction: m.direction, chapters: m.chapters.length, updated: m.updated,
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read: m.chapters.filter(c => p[c.id] && p[c.id].done).length,
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lastRead: Object.values(p).reduce((t, x) => Math.max(t, x.t || 0), 0),
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following: !!fol[m.id], unread: notes.filter(n => n.m === m.id).length,
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};
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}),
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};
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},
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'GET /api/manga': ({ u, q }) => {
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const m = mangaOf(q.get('m')), prog = progressOf(u, m);
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return {
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id: m.id, title: m.title, meta: m.meta, cover: url(m.cover), direction: m.direction,
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following: !!(db.follows[u.name] && db.follows[u.name][m.id]),
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books: m.books.map(b => ({ key: b.key, label: b.label, title: b.title, extra: b.extra })),
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chapters: m.chapters.map(ch => ({
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id: ch.id, book: ch.book, label: ch.label, title: ch.title, extra: ch.extra, progress: prog[ch.id] || null, versions: versionsOf(m, ch, u),
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})),
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continue: continueOf(m, prog, settingsOf(u)),
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};
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},
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'GET /api/chapter': ({ u, q }) => {
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const m = mangaOf(q.get('m')), ch = chapterOf(m, q.get('c')), s = settingsOf(u), prog = progressOf(u, m);
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const v = ch.versions.find(x => x.id === q.get('v')) || ranked(m, ch)[0].v;
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// Opening a chapter clears its "new chapter" notification.
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let seen = false;
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for (const n of db.notes[u.name] || []) if (!n.read && n.m === m.id && n.c === ch.id) seen = n.read = true;
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if (seen) save();
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return {
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manga: { id: m.id, title: m.title },
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chapter: { id: ch.id, label: ch.label, title: ch.title, extra: ch.extra },
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version: v.id, versions: versionsOf(m, ch, u), direction: v.direction,
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pages: v.pages.map(p => ({ u: url(v.rel + '/' + p.f), w: p.w, h: p.h, t: p.t, r: p.r })),
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prev: neighbour(m, ch, -1, s), next: neighbour(m, ch, 1, s),
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progress: prog[ch.id] || null,
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// for the chapter picker: the whole manga across all books
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books: m.books.map(b => ({ key: b.key, label: b.label, title: b.title })),
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chapters: m.chapters.map(c => ({ id: c.id, book: c.book, label: c.label, title: c.title, extra: c.extra, done: !!(prog[c.id] && prog[c.id].done) })),
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};
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},
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'POST /api/progress': ({ u, b }) => {
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const m = mangaOf(b.m), ch = chapterOf(m, b.c);
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const all = (db.progress[u.name] = db.progress[u.name] || {}), mp = (all[m.id] = all[m.id] || {}), old = mp[ch.id] || {};
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mp[ch.id] = {
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v: String(b.v || ''), p: Math.max(0, b.p | 0), n: Math.max(0, b.n | 0), t: Date.now(), done: !!(old.done || b.done),
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shift: Array.isArray(b.shift) ? b.shift.filter(Number.isInteger).slice(0, 1000) : old.shift || [],
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};
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save();
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return { ok: true };
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},
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'POST /api/unread': ({ u, b }) => {
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const m = mangaOf(b.m), mp = db.progress[u.name] && db.progress[u.name][m.id];
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if (mp) delete mp[chapterOf(m, b.c).id];
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save();
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return { ok: true };
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},
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'POST /api/vote': ({ u, b }) => {
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const m = mangaOf(b.m), ch = chapterOf(m, b.c), v = ch.versions.find(x => x.id === b.v) || bad(404, 'Version not found');
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const byChapter = (db.votes[m.id] = db.votes[m.id] || {}), byVersion = (byChapter[ch.id] = byChapter[ch.id] || {});
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const votes = (byVersion[v.id] = byVersion[v.id] || {}), value = Math.sign(+b.value || 0);
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if (value) votes[u.name] = value;
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else delete votes[u.name];
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save();
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return { versions: versionsOf(m, ch, u) };
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},
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'POST /api/follow': ({ u, b }) => {
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const m = mangaOf(b.m), f = (db.follows[u.name] = db.follows[u.name] || {});
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if (b.on) f[m.id] = true;
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else delete f[m.id];
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save();
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return { following: !!f[m.id] };
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},
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'GET /api/notifications': ({ u }) => ({ items: (db.notes[u.name] || []).slice().reverse() }),
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'POST /api/notifications/read': ({ u, b }) => {
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for (const n of db.notes[u.name] || []) if (b.all || n.id === b.id) n.read = true;
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save();
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return { unread: unreadOf(u) };
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},
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'GET /api/admin': ({ u }) => {
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admin(u);
|
||||
return { users: Object.values(db.users).map(x => ({ name: x.name, admin: !!x.admin, created: x.created })), scan: { ...scanState, running: !!scanning, library: LIB } };
|
||||
},
|
||||
'POST /api/admin/rescan': async ({ u, b }) => {
|
||||
admin(u);
|
||||
await rescan(!!b.full);
|
||||
return { scan: { ...scanState, running: false, library: LIB } };
|
||||
},
|
||||
'POST /api/admin/user': ({ u, b }) => {
|
||||
admin(u);
|
||||
const name = String(b.name || '').trim().toLowerCase();
|
||||
createUser(name, b.password, name === u.name || !!b.admin, true);
|
||||
return { ok: true };
|
||||
},
|
||||
'POST /api/admin/user/delete': ({ u, b }) => {
|
||||
admin(u);
|
||||
const name = String(b.name || '');
|
||||
if (name === u.name) bad(400, "You can't delete your own account.");
|
||||
delete db.users[name]; delete db.progress[name]; delete db.follows[name]; delete db.notes[name];
|
||||
for (const [k, s] of Object.entries(db.sessions)) if (s.u === name) delete db.sessions[k];
|
||||
save();
|
||||
return { ok: true };
|
||||
},
|
||||
};
|
||||
|
||||
// ---------- HTTP ----------
|
||||
function sendJson(res, code, obj) {
|
||||
res.writeHead(code, { 'Content-Type': 'application/json; charset=utf-8', 'Cache-Control': 'no-store' });
|
||||
res.end(JSON.stringify(obj));
|
||||
}
|
||||
async function readBody(req) {
|
||||
let s = '';
|
||||
for await (const c of req) { s += c; if (s.length > 1e6) bad(413, 'Request too large'); }
|
||||
try { return s ? JSON.parse(s) : {}; } catch { bad(400, 'Invalid JSON'); }
|
||||
}
|
||||
async function handleApi(req, res, u, route, q) {
|
||||
let b = {};
|
||||
if (req.method === 'POST') {
|
||||
// JSON-only + same-site: plain HTML forms from other sites can't reach the API.
|
||||
if (!/^application\/json/.test(req.headers['content-type'] || '') || req.headers['sec-fetch-site'] === 'cross-site') bad(403, 'Bad request origin');
|
||||
b = (await readBody(req)) || {};
|
||||
}
|
||||
sendJson(res, 200, await route({ req, res, u, b, q }));
|
||||
}
|
||||
function serveFile(req, res, root, rel, cacheControl, only) {
|
||||
let file;
|
||||
try { file = path.resolve(root, decodeURIComponent(rel)); } catch { return sendJson(res, 400, { error: 'Bad path' }); }
|
||||
if (!file.startsWith(root + path.sep) || (only && !only.test(file))) return sendJson(res, 404, { error: 'Not found' });
|
||||
fs.stat(file, (err, st) => {
|
||||
if (err || !st.isFile()) return sendJson(res, 404, { error: 'Not found' });
|
||||
const etag = `"${st.size.toString(36)}-${Math.round(st.mtimeMs).toString(36)}"`;
|
||||
if (req.headers['if-none-match'] === etag) { res.writeHead(304, { ETag: etag, 'Cache-Control': cacheControl }); return res.end(); }
|
||||
res.writeHead(200, { 'Content-Type': MIME[path.extname(file).toLowerCase()] || 'application/octet-stream', 'Content-Length': st.size, ETag: etag, 'Cache-Control': cacheControl });
|
||||
if (req.method === 'HEAD') return res.end();
|
||||
fs.createReadStream(file).on('error', () => res.destroy()).pipe(res);
|
||||
});
|
||||
}
|
||||
|
||||
http.createServer(async (req, res) => {
|
||||
try {
|
||||
const { pathname, searchParams } = new URL(req.url, 'http://localhost');
|
||||
const u = userOf(req);
|
||||
if (pathname.startsWith('/api/')) {
|
||||
const route = routes[req.method + ' ' + pathname];
|
||||
if (!route) bad(404, 'Unknown endpoint');
|
||||
if (!u && !PUBLIC.has(pathname)) bad(401, 'Please log in');
|
||||
return await handleApi(req, res, u, route, searchParams);
|
||||
}
|
||||
if (req.method !== 'GET' && req.method !== 'HEAD') bad(405, 'Method not allowed');
|
||||
if (pathname.startsWith('/lib/')) {
|
||||
if (!u) bad(401, 'Please log in');
|
||||
return serveFile(req, res, LIB, pathname.slice(5), 'private, max-age=86400', IMG);
|
||||
}
|
||||
serveFile(req, res, PUB, pathname === '/' ? 'index.html' : pathname.slice(1), 'no-cache');
|
||||
} catch (e) {
|
||||
if (!(e instanceof HttpError)) console.error(e);
|
||||
if (!res.headersSent) sendJson(res, e.code || 500, { error: e instanceof HttpError ? e.message : 'Internal error' });
|
||||
}
|
||||
}).listen(PORT, () => console.log(`MangaParty on http://localhost:${PORT} (library: ${LIB}, data: ${DATA})`));
|
||||
|
||||
rescan();
|
||||
if (SCAN_MINUTES > 0) setInterval(() => rescan(), SCAN_MINUTES * 60000).unref();
|
||||
Reference in new issue
Block a user