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solution #231

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4115628
solution
adonch Apr 23, 2026
2c84756
feat: enhance server functionality and update dependencies
adonch Apr 24, 2026
6025e10
solution
adonch Apr 24, 2026
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93 changes: 91 additions & 2 deletions src/createServer.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,97 @@
'use strict';

const express = require('express');
const multer = require('multer');
const zlib = require('zlib');
const fs = require('fs');
const http = require('http');

const upload = multer({ dest: 'uploads/' });

function createServer() {
/* Write your code here */
// Return instance of http.Server class
const html = `
<!DOCTYPE html>
<html>
<head>
<title>My Server</title>
</head>
<body>
<form action="/compress" method="post" enctype="multipart/form-data">
<input type="file" name="file">

<select name="compressionType">
<option value="none">No Compression</option>
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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 23, 2026

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The select field should only have options: gzip, deflate, br as specified in requirements. The 'none' option is not required.

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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 24, 2026

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This option should be removed. The task specifies only gzip, deflate, and br options are required for the select field.

<option value="gzip">Gzip</option>
<option value="deflate">Deflate</option>
<option value="br">Brotli</option>
</select>

<button type="submit">Submit</button>
</form>
</body>
</html>
`;
const app = express();

app.get('/', (req, res) => {
res.send(html);
});

app.get('/compress', (req, res) => {
res.status(400).send('Bad Request');
});

app.post('/compress', upload.single('file'), (req, res) => {
const file = req.file;
const compressionType = req.body.compressionType;

if (!file) {
return res.status(400).send('No file uploaded.');
}

if (!compressionType) {
return res.status(400).send('No compression type provided.');
}

let transformer;
let newFilename = file.originalname;

switch (compressionType) {
case 'gzip':
transformer = zlib.createGzip();
newFilename += '.gzip';
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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 23, 2026

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According to requirements, gzip extension should be .gz, not .gzip

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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 24, 2026

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The extension should be .gz not .gzip. Per task requirements, gzip compression should produce files with .gz extension (e.g., file.txt.gz).

break;
case 'deflate':
transformer = zlib.createDeflate();
newFilename += '.deflate';
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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 23, 2026

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According to requirements, deflate extension should be .dfl, not .deflate

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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 24, 2026

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The extension should be .dfl not .deflate. Per task requirements, deflate compression should produce files with .dfl extension.

break;
case 'br':
transformer = zlib.createBrotliCompress();
newFilename += '.br';
break;
case 'none':
res.setHeader(
'Content-Disposition',
`attachment; filename=${newFilename}`,
);

return fs.createReadStream(file.path).pipe(res);
default:
return res.status(400).send('Invalid compression type.');
}

res.setHeader('Content-Disposition', `attachment; filename=${newFilename}`);

const readStream = fs.createReadStream(file.path);

readStream.pipe(transformer).pipe(res);
});

app.use((req, res) => {
res.status(404).send('404 - Сторінку не знайдено');
});

return http.createServer(app);
}

module.exports = {
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