Nest Js Serve Static File , Image and Download Pdf File

import { Controller, Get, Post, Res, Param, Req, Header } from '@nestjs/common';

import { fsRoot } from './server-config';

import { createReadStream } from 'fs';

import { join } from 'path';

import url = require('url');

@Controller()

export class AppController {

    @Get('/upload/:fileId')

    async serveAvatar(@Param('fileId') fileId, @Res() res): Promise<any> {

        return res.sendFile(fileId, { root: 'upload' });

    }

// serve all nested folder

// @Get('/upload/*')

     // async serveAvatar(@Req() req, @Res() res): Promise<any> {

// const urlObject = url.parse(req.url, true);

     //    const filePath = decodeURI(urlObject.path).replace('/api/upload/', '');

     //    return res.sendFile(filePath , { root: 'upload' });

     // }

    @Get('/test')

    //@Header('Content-Type', 'application/pdf')

    getTest(@Res() response) {

        const url = join(fsRoot(), '/upload/test.pdf');

        const data = createReadStream(url);

        response.setHeader('Content-Type', 'application/pdf');

        response.setHeader('Content-Disposition', 'attachment; filename=another.pdf');

        data.pipe(response);

    }

}

// Create upload folder on your project root dir

// If you set app.setGlobalPrefix("api");

// image is serve on http://localhost:3000/api/upload/a.png

// pdf file is serve on http://localhost:3000/api/upload/test.pdf

// **************** server-config.ts Code ****************************

import path = require('path');

export const fsRoot = () => {

     return path.resolve(__dirname, '../');

};