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sol #174

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da5c756
sol
pryge Aug 19, 2025
eca8281
sol
pryge Aug 19, 2025
bf85202
sol
pryge Aug 19, 2025
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sol
pryge Aug 19, 2025
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pryge Aug 19, 2025
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102 changes: 100 additions & 2 deletions src/createServer.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,106 @@
'use strict';

const http = require('http');
const zlib = require('zlib');
const fs = require('fs');
const formidable = require('formidable');

// Lorem2 ipsum dolor sit amet, consectetur adipiscing elit.
function createServer() {
/* Write your code here */
// Return instance of http.Server class
return http.createServer((req, res) => {
if (req.url === '/') {
res.writeHead(200, { 'Content-Type': 'text/html' });
res.end('<h1>Welcome to the File Upload Server</h1>');

return;
}

if (req.url !== '/compress') {
res.writeHead(404, { 'Content-Type': 'text/plain' });
res.end('Not Found');

return;
}

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

return;
}

const form = new formidable.IncomingForm();

form.parse(req, (err, fields, files) => {
if (err) {
res.writeHead(500, { 'Content-Type': 'text/plain' });
res.end('Internal Server Error');

return;
}

const file = Array.isArray(files.file) ? files.file[0] : files.file;
const allowedTypes = ['gzip', 'deflate', 'br'];
const compressionType = Array.isArray(fields.compressionType)
? fields.compressionType[0]
: fields.compressionType;

if (!file || !file.filepath || !compressionType) {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request: No file uploaded');

return;
}

if (!allowedTypes.includes(compressionType)) {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request: Unsupported compression type');

return;
}

let compressor;
let extension;
let contentTypeName;

switch (compressionType) {
case 'gzip':
compressor = zlib.createGzip();
extension = '.gz'; // коротке розширення
contentTypeName = 'gzip'; // для заголовка
break;
case 'deflate':
compressor = zlib.createDeflate();
extension = '.dfl';
contentTypeName = 'deflate';
break;
case 'br':
compressor = zlib.createBrotliCompress();
// eslint-disable-next-line no-unused-vars
extension = '.br';
contentTypeName = 'br';
break;
default:
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Bad Request: Unsupported compression type');

return;
}

const originalFileName = file.originalFilename || 'uploaded_file';
// const compressedFileName = `${originalFileName}${extension}`;

// Передаємо у Content-Disposition повне ім’я алгоритму
res.writeHead(200, {
'Content-Type': 'application/octet-stream',
'Content-Disposition': `attachment; filename=${originalFileName}.${contentTypeName}`,
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@mateacademy-ai-mentor mateacademy-ai-mentor Aug 19, 2025

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The task requires the compressed file to have specific extensions: .gz for gzip and .dfl for deflate. Your current implementation uses the full compression type name, resulting in incorrect extensions like .gzip and .deflate. You should use the extension variable, which already holds the correct extension string, to construct the filename in the Content-Disposition header. The value should be formatted as attachment; filename=${originalFileName}${extension}.

});

const inputStream = fs.createReadStream(file.filepath);

inputStream.pipe(compressor).pipe(res);
});
});
}

module.exports = {
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23 changes: 23 additions & 0 deletions src/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,23 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
<form
action="http://localhost:5700/compress"
method="post"
enctype="multipart/form-data"
>
<input type="file" name="file" />
<select name="compressionType" id="">
<option value="gzip">gzip</option>
<option value="deflate">deflate</option>
<option value="br">br</option>
</select>
<button type="submit">Submit</button>
</form>
</body>
</html>