docs: adding nestjs swagger integration into back-end to api documentation

Author: renanjava

backend/package-lock.json

@@ -27,6 +27,7 @@
     "@nestjs/mapped-types": "*",
     "@nestjs/passport": "^11.0.5",
     "@nestjs/platform-express": "^11.0.1",
+    "@nestjs/swagger": "^11.2.0",
     "@prisma/client": "^6.16.3",
     "bcrypt": "^6.0.0",
     "class-transformer": "^0.5.1",

backend/package.json

@@ -1,9 +1,19 @@
 import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
 import { ValidationPipe } from '@nestjs/common';
+import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
+  const config = new DocumentBuilder()
+    .setTitle('Fullstack Challenge')
+    .setDescription('Time Tracker API documentation')
+    .setVersion('1.0')
+    .addTag('time-tracker')
+    .build();
+  const documentFactory = () => SwaggerModule.createDocument(app, config);
+  SwaggerModule.setup('api', app, documentFactory);
+
   app.enableCors();
   app.useGlobalPipes(new ValidationPipe({ whitelist: true }));
   await app.listen(process.env.PORT ?? 3000);