Fix: heartbeat state + startup write

worker.js

@@ -8,6 +8,7 @@ import fs from 'fs';
 
 // Shared state file for the Next.js frontend to read
 const STATE_FILE = '/tmp/kalbot-state.json';
+const HEARTBEAT_MS = 2000;
 
 async function main() {
   console.log('=== Kalbot Worker Starting ===');
@@ -25,17 +26,24 @@ async function main() {
     new ThresholdStrategy({ triggerPct: 65, betSize: 1 })
   ];
 
-  console.log(`[Worker] Loaded ${strategies.length} strategies: ${strategies.map(s => s.name).join(', ')}`);
+  console.log(`[Worker] Loaded ${strategies.length} strategies: ${strategies.map((s) => s.name).join(', ')}`);
 
   // Initialize market tracker
   const tracker = new MarketTracker();
+  let latestMarketState = null;
+  let heartbeatTimer = null;
+
+  // Write initial heartbeat immediately so dashboard never shows "Updated: never"
+  writeState(latestMarketState, paper, strategies);
 
   // On every market update, run strategies
   tracker.on('update', async (state) => {
-    if (!state) return;
+    latestMarketState = state || null;
 
     // Write state to file for frontend
-    writeState(state, paper, strategies);
+    writeState(latestMarketState, paper, strategies);
+
+    if (!state) return;
 
     // Run each strategy
     for (const strategy of strategies) {
@@ -53,7 +61,7 @@ async function main() {
     }
 
     // Update state file after potential trades
-    writeState(state, paper, strategies);
+    writeState(latestMarketState, paper, strategies);
   });
 
   // On market settlement, settle paper positions and notify strategies
@@ -64,10 +72,9 @@ async function main() {
 
     // Notify strategies about settlement
     for (const strategy of strategies) {
-      if (settledPositions) {
-        for (const trade of settledPositions) {
-          strategy.onSettlement(result, trade);
-        }
+      if (!settledPositions) continue;
+      for (const trade of settledPositions) {
+        strategy.onSettlement(result, trade);
       }
     }
 
@@ -77,33 +84,39 @@ async function main() {
       'default',
       'chart_with_upwards_trend'
     );
+
+    writeState(latestMarketState, paper, strategies);
   });
 
   // Start tracking
   await tracker.start();
   await notify('🤖 Kalbot Worker started!', 'Kalbot Online', 'low', 'robot,green_circle');
 
+  // Keep state fresh even if market API is temporarily quiet
+  heartbeatTimer = setInterval(() => {
+    writeState(latestMarketState, paper, strategies);
+  }, HEARTBEAT_MS);
+
   console.log('[Worker] Running. Press Ctrl+C to stop.');
 
-  // Graceful shutdown
-  process.on('SIGINT', async () => {
-    console.log('\n[Worker] Shutting down...');
+  const shutdown = async (signal) => {
+    console.log(`\n[Worker] ${signal} received. Shutting down...`);
+    clearInterval(heartbeatTimer);
     tracker.stop();
     await notify('🔴 Kalbot Worker stopped', 'Kalbot Offline', 'high', 'robot,red_circle');
     process.exit(0);
-  });
+  };
 
-  process.on('SIGTERM', async () => {
-    tracker.stop();
-    process.exit(0);
-  });
+  // Graceful shutdown
+  process.on('SIGINT', () => shutdown('SIGINT'));
+  process.on('SIGTERM', () => shutdown('SIGTERM'));
 }
 
 function writeState(marketState, paper, strategies) {
   const data = {
     market: marketState,
     paper: paper.getStats(),
-    strategies: strategies.map(s => s.toJSON()),
+    strategies: strategies.map((s) => s.toJSON()),
     workerUptime: process.uptime(),
     lastUpdate: Date.now()
   };