feat: show build logs alongside pod logs in app detail page

backend/src/build/build.service.ts

@@ -18,9 +18,9 @@ export class BuildService {
 
   /**
    * Builds a Docker image for the application using Kaniko inside K8s.
-   * Returns the full image URI (registry/repo:tag).
+   * Returns { imageUri, buildLog } — the full image URI and the build logs.
    */
-  async buildImage(app: Application): Promise<string> {
+  async buildImage(app: Application): Promise<{ imageUri: string; buildLog: string }> {
     // Internal registry (used by Kaniko inside K8s for pushing)
     const internalRegistryUrl = this.configService.get<string>('registry.url') || 'registry.cloudhost-builds.svc.cluster.local:5000';
     // External registry URL (used by kubelet for pulling — NodePort or external)
@@ -239,17 +239,26 @@ export class BuildService {
       // Wait for build to complete
       await this.waitForJobCompletion(batchApi, coreApi, buildPodName, buildNamespace!, 600);
 
+      // Capture build logs on success
+      let buildLog = '';
+      try {
+        buildLog = await this.getBuildLogs(coreApi, buildPodName, buildNamespace!);
+      } catch {}
+
       this.logger.log(`Build completed successfully: ${pullImageUri}`);
-      return pullImageUri;
+      return { imageUri: pullImageUri, buildLog };
     } catch (error: any) {
       // Try to get build logs for debugging
+      let buildLog = '';
       try {
-        const logs = await this.getBuildLogs(coreApi, buildPodName, buildNamespace!);
-        this.logger.error(`Build logs for ${buildPodName}:\n${logs}`);
+        buildLog = await this.getBuildLogs(coreApi, buildPodName, buildNamespace!);
+        this.logger.error(`Build logs for ${buildPodName}:\n${buildLog}`);
       } catch {}
 
       this.logger.error(`Build failed for ${app.name}:`, error.body || error.message);
-      throw new Error(`Image build failed: ${error.body?.message || error.message}`);
+      const err = new Error(`Image build failed: ${error.body?.message || error.message}`);
+      (err as any).buildLog = buildLog;
+      throw err;
     }
   }
 

backend/src/deployments/deployments.controller.ts

@@ -37,11 +37,17 @@ export class DeploymentsController {
   }
 
   @Get('applications/:appId/logs')
-  @ApiOperation({ summary: 'Get application logs' })
+  @ApiOperation({ summary: 'Get application pod logs' })
   async getLogs(@Param('appId') appId: string, @Request() req: any) {
     return { logs: await this.deploymentsService.getLogs(appId, req.user.id) };
   }
 
+  @Get('applications/:appId/build-logs')
+  @ApiOperation({ summary: 'Get build logs for latest deployment' })
+  async getBuildLogs(@Param('appId') appId: string, @Request() req: any) {
+    return this.deploymentsService.getBuildLogs(appId, req.user.id);
+  }
+
   @Post('applications/:appId/stop')
   @ApiOperation({ summary: 'Stop an application' })
   async stop(@Param('appId') appId: string, @Request() req: any) {

backend/src/deployments/deployments.service.ts

@@ -45,7 +45,10 @@ export class DeploymentsService {
     try {
       // Step 1: Build image
       await this.updateStatus(deploymentId, DeploymentStatus.BUILDING);
-      const imageUri = await this.buildService.buildImage(app);
+      const { imageUri, buildLog } = await this.buildService.buildImage(app);
+
+      // Save build log
+      await this.deploymentsRepository.update(deploymentId, { buildLog });
 
       // Step 2: Update app with new image tag
       await this.applicationsService.updateImageTag(app.id, imageUri);
@@ -62,9 +65,13 @@ export class DeploymentsService {
       });
     } catch (error: any) {
       this.logger.error(`Deployment ${deploymentId} failed:`, error);
+
+      // Save build log if available (attached by build service on failure)
+      const buildLog = error.buildLog || null;
       await this.deploymentsRepository.update(deploymentId, {
         status: DeploymentStatus.FAILED,
         errorMessage: error.message,
+        ...(buildLog ? { buildLog } : {}),
         finishedAt: new Date(),
       });
     }
@@ -97,6 +104,27 @@ export class DeploymentsService {
     return this.kubernetesService.getPodLogs(app);
   }
 
+  async getBuildLogs(applicationId: string, userId: string): Promise<{ buildLog: string | null; status: string; version: string | null; createdAt: Date }> {
+    // Verify user access
+    await this.applicationsService.findOne(applicationId, userId);
+
+    const latest = await this.deploymentsRepository.findOne({
+      where: { applicationId },
+      order: { createdAt: 'DESC' },
+    });
+
+    if (!latest) {
+      return { buildLog: null, status: 'no_deployment', version: null, createdAt: new Date() };
+    }
+
+    return {
+      buildLog: latest.buildLog || null,
+      status: latest.status,
+      version: latest.version,
+      createdAt: latest.createdAt,
+    };
+  }
+
   async stopDeployment(applicationId: string, userId: string): Promise<Deployment | null> {
     const app = await this.applicationsService.findOne(applicationId, userId);
     await this.kubernetesService.scaleDeployment(app, 0);

frontend/src/app/dashboard/apps/[id]/page.tsx

@@ -47,6 +47,7 @@ export default function AppDetailPage() {
   const queryClient = useQueryClient();
   const appId = params.id as string;
   const [showLogs, setShowLogs] = useState(false);
+  const [logTab, setLogTab] = useState<'pod' | 'build'>('pod');
   const fileInputRef = useRef<HTMLInputElement>(null);
   const logsEndRef = useRef<HTMLPreElement>(null);
   const [uploadProgress, setUploadProgress] = useState(0);
@@ -74,8 +75,15 @@ export default function AppDetailPage() {
   const { data: logsData } = useQuery<{ logs: string }>({
     queryKey: ['logs', appId],
     queryFn: () => api.get(`/deployments/applications/${appId}/logs`).then((r) => r.data),
-    enabled: showLogs,
-    refetchInterval: showLogs ? 3000 : false,
+    enabled: showLogs && logTab === 'pod',
+    refetchInterval: showLogs && logTab === 'pod' ? 3000 : false,
+  });
+
+  const { data: buildLogsData } = useQuery<{ buildLog: string | null; status: string; version: string | null }>({
+    queryKey: ['build-logs', appId],
+    queryFn: () => api.get(`/deployments/applications/${appId}/build-logs`).then((r) => r.data),
+    enabled: showLogs && logTab === 'build',
+    refetchInterval: showLogs && logTab === 'build' ? 5000 : false,
   });
 
   const { data: resourceUsage, isLoading: resourcesLoading } = useQuery<ResourceUsage>({
@@ -779,17 +787,23 @@ export default function AppDetailPage() {
         )}
       </div>
 
-      {/* Pod Logs */}
+      {/* Logs — Pod & Build */}
       <div className="card">
         <div className="flex items-center justify-between mb-4">
-          <h2 className="text-lg font-semibold text-gray-900">📋 Pod Logs</h2>
+          <h2 className="text-lg font-semibold text-gray-900">📋 Logs</h2>
           <div className="flex items-center space-x-3">
-            {showLogs && (
+            {showLogs && logTab === 'pod' && (
               <span className="text-xs text-gray-400 flex items-center space-x-1">
                 <span className="w-2 h-2 bg-green-500 rounded-full animate-pulse" />
                 <span>Live (every 3s)</span>
               </span>
             )}
+            {showLogs && logTab === 'build' && (
+              <span className="text-xs text-gray-400 flex items-center space-x-1">
+                <span className="w-2 h-2 bg-blue-500 rounded-full animate-pulse" />
+                <span>Auto-refresh (every 5s)</span>
+              </span>
+            )}
             <button
               onClick={() => setShowLogs(!showLogs)}
               className="btn-secondary text-sm"
@@ -799,6 +813,33 @@ export default function AppDetailPage() {
           </div>
         </div>
         {showLogs && (
+          <div className="space-y-3">
+            {/* Tab switcher */}
+            <div className="flex space-x-1 bg-gray-100 rounded-lg p-1">
+              <button
+                onClick={() => setLogTab('pod')}
+                className={`flex-1 px-4 py-2 text-sm font-medium rounded-md transition-colors ${
+                  logTab === 'pod'
+                    ? 'bg-white text-gray-900 shadow-sm'
+                    : 'text-gray-500 hover:text-gray-700'
+                }`}
+              >
+                🖥️ Pod Logs
+              </button>
+              <button
+                onClick={() => setLogTab('build')}
+                className={`flex-1 px-4 py-2 text-sm font-medium rounded-md transition-colors ${
+                  logTab === 'build'
+                    ? 'bg-white text-gray-900 shadow-sm'
+                    : 'text-gray-500 hover:text-gray-700'
+                }`}
+              >
+                🔨 Build Logs
+              </button>
+            </div>
+
+            {/* Pod logs */}
+            {logTab === 'pod' && (
               <pre
                 ref={logsEndRef}
                 className="bg-gray-900 text-green-400 p-4 rounded-lg text-xs font-mono overflow-x-auto max-h-[500px] overflow-y-auto whitespace-pre-wrap break-words"
@@ -806,6 +847,33 @@ export default function AppDetailPage() {
                 {logsData?.logs || (isRunning ? 'Loading logs...' : isStopped ? 'Application is stopped. Start it to see logs.' : 'Waiting for pod to be ready...')}
               </pre>
             )}
+
+            {/* Build logs */}
+            {logTab === 'build' && (
+              <div>
+                {buildLogsData?.version && (
+                  <div className="flex items-center space-x-3 mb-2 text-xs text-gray-500">
+                    <span>📌 {buildLogsData.version}</span>
+                    <span className={`px-2 py-0.5 rounded-full font-medium ${statusColors[buildLogsData.status] || 'bg-gray-100'}`}>
+                      {buildLogsData.status}
+                    </span>
+                  </div>
+                )}
+                <pre className="bg-gray-900 text-blue-300 p-4 rounded-lg text-xs font-mono overflow-x-auto max-h-[500px] overflow-y-auto whitespace-pre-wrap break-words">
+                  {buildLogsData?.buildLog || (
+                    buildLogsData?.status === 'building'
+                      ? 'Build in progress... Logs will appear when complete.'
+                      : buildLogsData?.status === 'pending'
+                        ? 'Build is pending...'
+                        : buildLogsData?.status === 'no_deployment'
+                          ? 'No deployments yet. Deploy your app to see build logs.'
+                          : 'No build logs available for this deployment.'
+                  )}
+                </pre>
+              </div>
+            )}
+          </div>
+        )}
       </div>
     </div>
   );