2c37d5934c
- Koa server on port 10000 with WebSocket live feed from 112-nu.nl RSS - PM2 watch mode for auto-restart on file changes - Dark navy UI with per-type color accents (fire/ambulance/police/rescue) - Slide-in filter panel with service type + 12 Dutch province filters - Card click opens detail modal: parsed priority (A1/A2/MGS), vehicle number, rit/bon number, alarm type, meldkamer, and eenheden - Server-side Nominatim geocoder (cached, rate-limited) powering an interactive Leaflet/OpenStreetMap map in the modal (CartoDB Voyager tiles) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
96 lines
3.8 KiB
JavaScript
96 lines
3.8 KiB
JavaScript
const http = require('http');
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const path = require('path');
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const Koa = require('koa');
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const Router = require('@koa/router');
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const serve = require('koa-static');
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const { WebSocketServer, OPEN } = require('ws');
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const P2000 = require('./src/p2000');
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const { geocode, messageToQuery } = require('./src/geocoder');
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const PORT = Number(process.env.PORT) || 10000;
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const MAX_HISTORY = 500;
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// ── Koa app ──────────────────────────────────────────────────────────────────
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const app = new Koa();
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const router = new Router();
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app.use(serve(path.join(__dirname, 'public')));
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router.get('/health', ctx => {
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ctx.body = { status: 'ok', uptime: process.uptime(), messages: history.length };
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});
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// Paginated history — ?offset=0&limit=30&type=all
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router.get('/api/messages', ctx => {
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const offset = Math.max(0, parseInt(ctx.query.offset) || 0);
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const limit = Math.min(100, Math.max(1, parseInt(ctx.query.limit) || 30));
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const type = ctx.query.type || 'all';
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const pool = type === 'all' ? history : history.filter(m => m.type === type);
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ctx.body = {
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messages: pool.slice(offset, offset + limit),
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total: pool.length,
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offset,
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limit,
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};
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});
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// Geocode a message by id — proxies Nominatim so the client never hits it directly
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router.get('/api/geocode', async ctx => {
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const msg = history.find(m => m.id === ctx.query.id);
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if (!msg) { ctx.status = 404; ctx.body = { error: 'not found' }; return; }
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const query = messageToQuery(msg);
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if (!query) { ctx.body = { coords: null }; return; }
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const coords = await geocode(query);
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ctx.body = { coords, query };
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});
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app.use(router.routes()).use(router.allowedMethods());
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// ── HTTP server ───────────────────────────────────────────────────────────────
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const server = http.createServer(app.callback());
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// ── WebSocket server ──────────────────────────────────────────────────────────
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const wss = new WebSocketServer({ server, path: '/ws' });
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const history = [];
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function broadcast(payload) {
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const data = JSON.stringify(payload);
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for (const client of wss.clients) {
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if (client.readyState === OPEN) client.send(data);
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}
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}
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wss.on('connection', ws => {
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// Send existing history so the UI isn't blank on first load
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ws.send(JSON.stringify({ type: 'history', messages: history }));
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ws.on('error', err => console.error('[ws] client error:', err.message));
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});
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// ── P-2000 poller ─────────────────────────────────────────────────────────────
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const p2000 = new P2000();
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p2000.on('batch', messages => {
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history.push(...messages);
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if (history.length > MAX_HISTORY) history.splice(0, history.length - MAX_HISTORY);
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broadcast({ type: 'history', messages: history });
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});
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p2000.on('message', msg => {
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history.unshift(msg);
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if (history.length > MAX_HISTORY) history.pop();
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broadcast({ type: 'message', message: msg });
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});
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p2000.start();
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// ── Start ─────────────────────────────────────────────────────────────────────
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server.listen(PORT, () => {
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console.log(`[server] Listening on http://localhost:${PORT}`);
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});
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// Graceful shutdown
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process.on('SIGINT', () => { p2000.stop(); server.close(() => process.exit(0)); });
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process.on('SIGTERM', () => { p2000.stop(); server.close(() => process.exit(0)); });
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