feat: Initialize NestJS backend project with Prisma, core modules, configuration, and common utilities.

src/main.ts

@@ -0,0 +1,91 @@
+import { NestFactory } from '@nestjs/core';
+import { ValidationPipe, Logger } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
+import helmet from 'helmet';
+import * as cookieParser from 'cookie-parser';
+import { AppModule } from './app.module';
+import { AllExceptionsFilter } from './common/filters';
+import { TransformInterceptor } from './common/interceptors';
+
+async function bootstrap() {
+  const logger = new Logger('Bootstrap');
+  const app = await NestFactory.create(AppModule);
+
+  const configService = app.get(ConfigService);
+  const port = configService.get<number>('app.port') || 3001;
+  const appEnv = configService.get<string>('app.env') || 'development';
+  const corsOrigins = configService.get<string[]>('cors.origins') || [];
+
+  // Security
+  app.use(helmet());
+  app.use(cookieParser());
+
+  // CORS
+  app.enableCors({
+    origin: corsOrigins,
+    credentials: true,
+    methods: ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'],
+    allowedHeaders: ['Content-Type', 'Authorization', 'X-Requested-With'],
+  });
+
+  // Global prefix
+  app.setGlobalPrefix('api/v1');
+
+  // Global pipes
+  app.useGlobalPipes(
+    new ValidationPipe({
+      whitelist: true,
+      forbidNonWhitelisted: true,
+      transform: true,
+      transformOptions: {
+        enableImplicitConversion: true,
+      },
+    }),
+  );
+
+  // Global filters
+  app.useGlobalFilters(new AllExceptionsFilter());
+
+  // Global interceptors
+  app.useGlobalInterceptors(new TransformInterceptor());
+
+  // Swagger documentation (only in development)
+  if (appEnv !== 'production') {
+    const config = new DocumentBuilder()
+      .setTitle('Real Estate Agent Platform API')
+      .setDescription('API documentation for the Real Estate Agent Platform')
+      .setVersion('1.0')
+      .addBearerAuth(
+        {
+          type: 'http',
+          scheme: 'bearer',
+          bearerFormat: 'JWT',
+          name: 'JWT',
+          description: 'Enter JWT token',
+          in: 'header',
+        },
+        'JWT-auth',
+      )
+      .addTag('Auth', 'Authentication endpoints')
+      .addTag('Users', 'User management endpoints')
+      .addTag('Agents', 'Agent management endpoints')
+      .addTag('Health', 'Health check endpoints')
+      .build();
+
+    const document = SwaggerModule.createDocument(app, config);
+    SwaggerModule.setup('api/docs', app, document, {
+      swaggerOptions: {
+        persistAuthorization: true,
+      },
+    });
+
+    logger.log(`Swagger documentation available at http://localhost:${port}/api/docs`);
+  }
+
+  await app.listen(port);
+  logger.log(`Application is running on: http://localhost:${port}`);
+  logger.log(`Environment: ${appEnv}`);
+}
+
+bootstrap();