Software

v0.0..1

software/v0.0.1/ws_server.js

@@ -0,0 +1,41 @@
+const fs = require('fs');
+const path = require('path');
+const WebSocket = require('ws');
+
+const LOG = path.join(__dirname, 'data', 'bot.log');
+const PORT = process.env.PORT || 8090;
+
+const wss = new WebSocket.Server({ port: PORT });
+console.log('WS server running at ws://localhost:' + PORT);
+
+// Funktion til at hente de sidste n linjer fra logfilen
+function tail(n = 80) {
+  try {
+    const t = fs.readFileSync(LOG, 'utf8');
+    const L = t.split('\n');
+    return L.slice(-n).join('\n');
+  } catch (e) {
+    return '';
+  }
+}
+
+// Send seneste log ved ny forbindelse
+wss.on('connection', ws => {
+  ws.send(JSON.stringify({
+    type: 'log',
+    data: tail(80)
+  }));
+});
+
+// Tjek for ændringer i logfilen og broadcast
+let last = '';
+setInterval(() => {
+  const t = tail(80);
+  if (t !== last) {
+    const payload = JSON.stringify({ type: 'log', data: t });
+    wss.clients.forEach(c => {
+      if (c.readyState === WebSocket.OPEN) c.send(payload);
+    });
+    last = t;
+  }
+}, 500);