From bf09a151a8411b7efacd90a65447e257a7f52635 Mon Sep 17 00:00:00 2001
From: Dymas <vysin.jiri@gmail.com>
Date: Mon, 22 Jun 2026 09:49:50 +0200
Subject: [PATCH] Harden frontend static serving

---
 src/backend/src/app.module.ts | 21 +++++++++++++++++++--
 src/frontend/src/main.ts      |  6 +++++-
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/src/backend/src/app.module.ts b/src/backend/src/app.module.ts
index b55dbd2..c4d789a 100644
--- a/src/backend/src/app.module.ts
+++ b/src/backend/src/app.module.ts
@@ -16,6 +16,24 @@ import { AuthGuard } from './shared/auth.guard';
 import { ThrottlerGuard, ThrottlerModule } from '@nestjs/throttler';
 import { ArchiveModule } from './archive/archive.module';
 import { OperationsModule } from './operations/operations.module';
+import * as fs from 'fs';
+
+function resolveFrontendRoot(fePath: string | undefined): string {
+  const configuredRoot = resolve(__dirname, fePath || '../frontend/browser');
+  const candidateRoots = [
+    configuredRoot,
+    resolve(configuredRoot, 'browser'),
+    resolve(configuredRoot, '..'),
+  ];
+
+  for (const candidateRoot of candidateRoots) {
+    if (fs.existsSync(resolve(candidateRoot, 'index.html'))) {
+      return candidateRoot;
+    }
+  }
+
+  return configuredRoot;
+}
 
 @Module({
   imports: [
@@ -38,8 +56,7 @@ import { OperationsModule } from './operations/operations.module';
       imports: [ConfigModule],
       useFactory: async (configService: ConfigService) => [
         {
-          rootPath: resolve(
-            __dirname,
+          rootPath: resolveFrontendRoot(
             configService.get<string>(EnvironmentEnum.FE_PATH),
           ),
           exclude: ['/api/(.*)'],
diff --git a/src/frontend/src/main.ts b/src/frontend/src/main.ts
index 6823534..bfc0286 100644
--- a/src/frontend/src/main.ts
+++ b/src/frontend/src/main.ts
@@ -1,3 +1,4 @@
+import { isDevMode } from '@angular/core';
 import { bootstrapApplication } from '@angular/platform-browser';
 import { appConfig } from './app/app.config';
 import { AppComponent } from './app/app.component';
@@ -5,4 +6,7 @@ import { devTools } from '@ngneat/elf-devtools';
 
 bootstrapApplication(AppComponent, appConfig)
   .catch((err) => console.error(err));
-devTools();
+
+if (isDevMode()) {
+  devTools();
+}