update calculate result proccess from scratch

src/main.ts

-1import { NestFactory } from '@nestjs/core';
+import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
+import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger'
 
 async function bootstrap() {
   const app = await NestFactory.create(AppModule);
@@ -9,6 +10,28 @@ async function bootstrap() {
     credentials: true,
   })
 
+  const configDocument = new DocumentBuilder()
+  .setTitle('Instagram Service')
+  .setDescription('The Instagram Service API description')
+  .setVersion('1.0')
+  .setBasePath('/api')
+  .addTag('Instagram Service')
+  .build()
+  const document = SwaggerModule.createDocument(app, configDocument)
+
+  app.use('/api/docs/swagger.json', (req, res) => {
+    res.send(document)
+  })
+
+  SwaggerModule.setup('/api/docs', app, null, {
+    explorer: true,
+    swaggerOptions: {
+      docExpansion: 'list',
+      filter: true,
+      showRequestDuration: true,
+    },
+  })
+
   await app.listen(4001).then(() => {
     console.log(`server start on port 4001`);