connection loss protection

index.js

@@ -56,18 +56,15 @@ client.on(Events.GuildMemberAdd, async (member) => {
   }
 });
 
-// Log in
-// Catch library/client errors to prevent unhandled 'error' events from crashing the process
+// Log in and add reconnect/resiliency logic
 client.on('error', (err) => {
   console.error('Client error:', err);
 });
 
-// Some libraries emit shard-specific errors — log them for diagnostics
 client.on('shardError', (err) => {
   console.error('Shard error:', err);
 });
 
-// Global handlers to capture unexpected problems and provide diagnostics
 process.on('uncaughtException', (err) => {
   console.error('Uncaught exception:', err);
 });
@@ -76,4 +73,65 @@ process.on('unhandledRejection', (reason, promise) => {
   console.error('Unhandled Rejection at:', promise, 'reason:', reason);
 });
 
-client.login(BOT_TOKEN);
+// Reconnect/backoff helpers
+let reconnectAttempts = 0;
+let isConnecting = false;
+const MAX_BACKOFF = 30000; // 30s
+
+async function connectWithRetry() {
+  if (isConnecting) return;
+  isConnecting = true;
+  try {
+    // If the library provides a destroy/logout method, try to clean up first
+    if (typeof client.destroy === 'function') {
+      try {
+        client.destroy();
+      } catch (e) {
+        // ignore
+      }
+    }
+
+    await client.login(BOT_TOKEN);
+    reconnectAttempts = 0;
+    console.log('Successfully connected.');
+  } catch (err) {
+    reconnectAttempts += 1;
+    const delay = Math.min(MAX_BACKOFF, 1000 * Math.pow(2, Math.min(reconnectAttempts, 5)));
+    console.error(`Login attempt ${reconnectAttempts} failed:`, err);
+    console.log(`Retrying in ${delay}ms...`);
+    setTimeout(() => {
+      isConnecting = false;
+      connectWithRetry();
+    }, delay);
+  } finally {
+    isConnecting = false;
+  }
+}
+
+// Listen for common disconnect-like events and trigger reconnect attempts.
+// Different client implementations emit different event names; guard each with a check.
+try {
+  client.on('disconnect', (event) => {
+    console.warn('Client disconnected:', event);
+    setTimeout(connectWithRetry, 1000);
+  });
+} catch (e) {}
+
+try {
+  client.on('close', (code, reason) => {
+    console.warn('Connection closed:', code, reason);
+    setTimeout(connectWithRetry, 1000);
+  });
+} catch (e) {}
+
+// Periodic health check: if client isn't ready, try reconnecting.
+setInterval(() => {
+  const healthy = client && client.user && client.user.username;
+  if (!healthy) {
+    console.warn('Health check: client not ready, attempting reconnect...');
+    connectWithRetry();
+  }
+}, 30 * 1000);
+
+// Start initial connection attempt
+connectWithRetry();