updated gitignore,package lock for node 20 pipeline

server.js

@@ -4,6 +4,7 @@ const appInsights = require("applicationinsights");
 
 const initAppInsights = (instrumentationKey) => {
     if (!instrumentationKey) {
+        console.log("App Insights not configured.");
         return false;
     }
 
@@ -13,6 +14,7 @@ const initAppInsights = (instrumentationKey) => {
         .setSendLiveMetrics(true)
         .start();
 
+    console.log("App Insights enabled.");
     return true;
 };
 
@@ -24,6 +26,8 @@ const startServer = async (config) => {
     };
 
     const app = next(serverOptions);
+    await app.prepare(); // prepare BEFORE starting the server
+
     const handleNextRequests = app.getRequestHandler();
 
     const srv = createServer((req, res) => {
@@ -38,22 +42,28 @@ const startServer = async (config) => {
     });
 
     await new Promise((resolve, reject) => {
-        // This code catches EADDRINUSE error if the port is already in use
         srv.on("error", reject);
         srv.on("listening", () => resolve());
         srv.listen(config.port, config.hostname);
     });
 
-    // It's up to caller to run `app.prepare()`, so it can notify that the server
-    // is listening before starting any intensive operations.
+    // Graceful shutdown handling
+    process.on("SIGTERM", () => {
+        console.log("Received SIGTERM, shutting down gracefully...");
+        srv.close(() => {
+            console.log("Server closed.");
+            process.exit(0);
+        });
+    });
+
     return app;
 };
 
+// App configuration
 const startTime = Date.now();
-
 const serverConfig = {
-    hostname: "localhost",
-    port: process.env.PORT || 3000,
+    hostname: "0.0.0.0", // Required for Azure App Service
+    port: parseInt(process.env.PORT, 10) || 3000,
     env: process.env.APP_ENV || process.env.NODE_ENV || "production",
     useAppInsights: initAppInsights(
         process.env.NEXT_PUBLIC_APPINSIGHTS_INSTRUMENTATIONKEY
@@ -61,24 +71,20 @@ const serverConfig = {
 };
 
 startServer(serverConfig)
-    .then(async (app) => {
+    .then(() => {
         console.log(
-            `started server on host ${serverConfig.hostname}, port ${serverConfig.port}, env ${serverConfig.env}`
+            `Server ready on http://${serverConfig.hostname}:${serverConfig.port} [${serverConfig.env}]`
         );
 
         if (serverConfig.useAppInsights) {
             const duration = Date.now() - startTime;
-
             appInsights.defaultClient.trackMetric({
-                name: "server startup time",
+                name: "Server Startup Time",
                 value: duration,
             });
         }
-
-        await app.prepare();
     })
-    .catch((error) => {
-        console.error(err);
-
+    .catch((err) => {
+        console.error("Server failed to start:", err);
         process.exit(1);
     });