first commit

Smartes-Klassenzimmer-Backend/src/main.ts

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+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+import { NestExpressApplication } from '@nestjs/platform-express';
+import { ValidationPipe } from '@nestjs/common';
+import cookieParser from 'cookie-parser';
+
+async function bootstrap() {
+  const app = await NestFactory.create<NestExpressApplication>(AppModule);
+
+  // CORS Konfiguration
+  app.enableCors({
+    origin: [
+      'http://localhost:5173',     // Vite Dev Server
+      'http://127.0.0.1:5173',     // Vite Dev Server (Alternative)
+      'http://localhost:5500',
+      'http://127.0.0.1:5500',
+      'http://localhost:3000'
+    ],
+    credentials: true,
+    methods: ['GET', 'POST', 'PUT', 'DELETE', 'PATCH', 'OPTIONS'],
+    allowedHeaders: ['Content-Type', 'Authorization'],
+  });
+
+  // Globales Präfix für alle Routes
+  app.setGlobalPrefix('api');
+
+  // Cookie Parser für JWT-Cookies
+  app.use(cookieParser());
+
+  // Validation Pipe für DTOs
+  app.useGlobalPipes(
+    new ValidationPipe({
+      whitelist: true,
+      forbidNonWhitelisted: true,
+      transform: true,
+    }),
+  );
+
+  await app.listen(process.env.PORT ?? 3000);
+}
+bootstrap();