94 lines
3.7 KiB
JavaScript
94 lines
3.7 KiB
JavaScript
// Urlaubsvergleich 2026 – Familie Heidrich
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// Zero-dependency Node server: serves static page + voting API with file persistence.
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const http = require('http');
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const fs = require('fs');
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const path = require('path');
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const PORT = process.env.PORT || 80;
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const PUBLIC = path.join(__dirname, 'public');
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// Persistence: prefer mounted /data volume, fall back to local ./data
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function pickDataDir() {
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const candidates = [process.env.DATA_DIR, '/data', path.join(__dirname, 'data')].filter(Boolean);
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for (const dir of candidates) {
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try { fs.mkdirSync(dir, { recursive: true }); fs.accessSync(dir, fs.constants.W_OK); return dir; }
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catch (e) { /* try next */ }
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}
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return __dirname;
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}
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const DATA_DIR = pickDataDir();
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const DATA_FILE = path.join(DATA_DIR, 'votes.json');
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const VOTERS = ['till', 'lea', 'astrid'];
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function loadState() {
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try { return JSON.parse(fs.readFileSync(DATA_FILE, 'utf8')); }
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catch (e) { return { votes: {} }; }
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}
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function saveState(state) {
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try { fs.writeFileSync(DATA_FILE, JSON.stringify(state)); } catch (e) { console.error('save failed', e); }
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}
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let state = loadState();
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const MIME = { '.html': 'text/html; charset=utf-8', '.js': 'text/javascript; charset=utf-8',
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'.css': 'text/css; charset=utf-8', '.json': 'application/json', '.svg': 'image/svg+xml',
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'.png': 'image/png', '.jpg': 'image/jpeg', '.ico': 'image/x-icon', '.webmanifest': 'application/manifest+json' };
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function sendJSON(res, code, obj) {
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const body = JSON.stringify(obj);
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res.writeHead(code, { 'Content-Type': 'application/json', 'Cache-Control': 'no-store' });
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res.end(body);
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}
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function readBody(req) {
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return new Promise((resolve) => {
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let b = ''; req.on('data', c => { b += c; if (b.length > 1e5) req.destroy(); });
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req.on('end', () => { try { resolve(JSON.parse(b || '{}')); } catch (e) { resolve({}); } });
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});
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}
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const server = http.createServer(async (req, res) => {
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const url = new URL(req.url, 'http://x');
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const p = url.pathname;
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// ---- API ----
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if (p === '/api/state' && req.method === 'GET') {
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return sendJSON(res, 200, { votes: state.votes, voters: VOTERS });
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}
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if (p === '/api/vote' && req.method === 'POST') {
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const { voter, option, stars } = await readBody(req);
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if (!VOTERS.includes(voter) || !option || typeof stars !== 'number' || stars < 0 || stars > 5) {
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return sendJSON(res, 400, { error: 'invalid' });
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}
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state.votes[voter] = state.votes[voter] || {};
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if (stars === 0) { delete state.votes[voter][option]; }
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else { state.votes[voter][option] = Math.round(stars); }
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saveState(state);
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return sendJSON(res, 200, { votes: state.votes, voters: VOTERS });
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}
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if (p === '/api/reset' && req.method === 'POST') {
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state = { votes: {} }; saveState(state);
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return sendJSON(res, 200, { votes: state.votes, voters: VOTERS });
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}
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if (p === '/health') { return sendJSON(res, 200, { ok: true }); }
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// ---- Static ----
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let file = p === '/' ? '/index.html' : decodeURIComponent(p);
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const full = path.join(PUBLIC, path.normalize(file).replace(/^(\.\.[\/\\])+/, ''));
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if (!full.startsWith(PUBLIC)) { res.writeHead(403); return res.end('forbidden'); }
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fs.readFile(full, (err, data) => {
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if (err) {
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// SPA-ish fallback to index
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return fs.readFile(path.join(PUBLIC, 'index.html'), (e2, d2) => {
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if (e2) { res.writeHead(404); return res.end('not found'); }
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res.writeHead(200, { 'Content-Type': MIME['.html'] }); res.end(d2);
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});
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}
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const ext = path.extname(full).toLowerCase();
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res.writeHead(200, { 'Content-Type': MIME[ext] || 'application/octet-stream' });
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res.end(data);
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});
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});
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server.listen(PORT, () => console.log('Reise-Vergleich läuft auf Port ' + PORT + ' | Daten: ' + DATA_FILE));
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