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task #222

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f54ca56
task
Augustwise Apr 2, 2026
81af5e5
fix
Augustwise Apr 2, 2026
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27 changes: 27 additions & 0 deletions public/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>File Compression</title>
</head>
<body>
<form action="/compress" method="POST" enctype="multipart/form-data">
<div>
<label for="file">Select a file:</label>
<input type="file" id="file" name="file" />
</div>
<div>
<label for="compressionType">Compression type:</label>
<select id="compressionType" name="compressionType">
<option value="gzip">gzip</option>
<option value="deflate">deflate</option>
<option value="br">br</option>
</select>
</div>
<div>
<button type="submit">Submit</button>
</div>
</form>
</body>
</html>
103 changes: 101 additions & 2 deletions src/createServer.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,107 @@
'use strict';

const http = require('http');
const fs = require('fs');
const zlib = require('zlib');
const { IncomingForm } = require('formidable');

const SUPPORTED_TYPES = new Set(['gzip', 'deflate', 'br']);

function getFirstValue(value) {
return Array.isArray(value) ? value[0] : value;
}

function createCompressionStream(compressionType) {
switch (compressionType) {
case 'gzip':
return zlib.createGzip();
case 'deflate':
return zlib.createDeflate();
case 'br':
return zlib.createBrotliCompress();
default:
return null;
}
}

function handleCompressRequest(req, res) {
if (req.method !== 'POST') {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request');

return;
}

const form = new IncomingForm();

form.parse(req, (error, fields, files) => {
if (error) {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request');

return;
}

const file = getFirstValue(files.file);
const compressionType = getFirstValue(fields.compressionType);
const filename = file?.originalFilename || file?.filename;

if (!file || !compressionType || !filename) {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request');

return;
}

if (!SUPPORTED_TYPES.has(compressionType)) {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request');

return;
}

const compressionStream = createCompressionStream(compressionType);

res.writeHead(200, {
'Content-Type': 'application/octet-stream',
'Content-Disposition': `attachment; filename=${filename}.${compressionType}`,
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@mateacademy-ai-mentor mateacademy-ai-mentor Apr 2, 2026

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The task requires the compressed file to have specific extensions: .gz for gzip, .dfl for deflate, and .br for brotli. Currently, the code uses the full compressionType value (gzip, deflate, br) as the extension.

You'll need to map the compressionType to the correct extension as specified in the description.

});

fs.createReadStream(file.filepath)
.on('error', () => {
res.writeHead(500, { 'Content-Type': 'text/plain' });
res.end('Internal Server Error');
})
.pipe(compressionStream)
.on('error', () => {
res.writeHead(500, { 'Content-Type': 'text/plain' });
res.end('Internal Server Error');
})
.pipe(res);
});
}

function createServer() {
/* Write your code here */
// Return instance of http.Server class
const server = http.createServer((req, res) => {
if (req.url === '/') {
const stream = fs.createReadStream('public/index.html');

res.writeHead(200, { 'Content-Type': 'text/html' });
stream.pipe(res);

stream.on('error', () => {
res.writeHead(500, { 'Content-Type': 'text/plain' });
res.end('Error reading file');
});
} else if (req.url === '/compress') {
handleCompressRequest(req, res);
} else {
res.writeHead(404, { 'Content-Type': 'text/plain' });
res.end('Not Found');
}
});

return server;
}

module.exports = {
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