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add task solution #111

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add task solution #111

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2a1ec73
add task solution
lmuias Jul 17, 2024
1f9dfd8
add small fix
lmuias Jul 17, 2024
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98 changes: 96 additions & 2 deletions src/createServer.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,102 @@
'use strict';

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

const compressionTypes = ['gzip', 'deflate', 'br'];

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

function createServer() {
/* Write your code here */
// Return instance of http.Server class
const server = new http.Server();

server.on('request', (req, res) => {
const form = new formidable.IncomingForm();
const url = new URL(req.url, `http://${req.headers.host}`);
const pathname = url.pathname;

if (pathname === '/' && req.method === 'GET') {
res.statusCode = 200;
res.end('Ready');

return;
}

if (pathname !== '/compress') {
res.statusCode = 404;
res.end('Trying to access a non-existing route');

return;
}

if (req.method !== 'POST') {
res.statusCode = 400;
res.end('Use POST request method instead');

return;
}

form.parse(req, (error, { compressionType: fields }, { file: files }) => {
if (error || !files || !fields) {
res.statusCode = 400;
res.end('Bad request');

return;
}

const [compressionType] = fields;
const [file] = files;

if (!compressionTypes.includes(compressionType)) {
res.statusCode = 400;
res.end('Compression type not supported');

return;
}

const compressedFile = handleCompressFile(compressionType);

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

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

fileStream
.on('error', (err) => {
res.statusCode = 500;
res.end('Failed to read file', err);
})
.pipe(compressedFile)
.on('error', (err) => {
res.statusCode = 500;
res.end('Failed to compress file', err);
})
.pipe(res)
.on('error', (err) => {
// eslint-disable-next-line no-console
console.error('Error sending response:', err);
});

res.on('close', () => fileStream.destroy());
});
});

return server;
}

module.exports = {
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20 changes: 20 additions & 0 deletions src/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
<!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="/compress" method="post">
<input type="file" name="file">
<select name="compressionType" id="compressionType">
<option value="gzip">gzip</option>
<option value="deflate">deflate</option>
<option value="br">br</option>
</select>

<button type="submit">Submit</button>
</form>
</body>
</html>
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