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Solution #106

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Solution #106

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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>Compression App</title>
</head>
<body>
<form action="./compress" method="post" enctype="multipart/form-data">
<label for="file">Select a file:</label>
<input type="file" name="file" id="file" required>

<br>

<label for="compressionType">Choose a compression type:</label>
<select name="compressionType" id="compressionType" required>
<option value="gzip">gzip</option>
<option value="deflate">deflate</option>
<option value="br">br</option>
</select>

<br>

<input type="submit" value="Compress">
</form>
</body>
</html>
117 changes: 115 additions & 2 deletions src/createServer.js
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@@ -1,8 +1,121 @@
/* eslint-disable no-console */
'use strict';

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

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

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

if (pathname !== '/compress' && pathname !== '/') {
res.statusCode = 404;
res.end('Non-existent endpoint');

return;
}

if (req.method === 'GET' && pathname === '/') {
res.statusCode = 200;
res.setHeader('Content-type', 'text/html');

fs.readFile('./public/index.html', (err, data) => {
if (err) {
res.statusCode = 404;
res.end('Not found');

return;
}

res.end(data);
});
}

if (req.method === 'GET' && pathname === '/compress') {
res.statusCode = 400;
res.end('Not Found');

return;
}

if (req.method === 'POST' && pathname === '/compress') {
const form = new formidable.IncomingForm();

form.parse(req, (err, fields, files) => {
if (err) {
res.statusCode = 400;
res.end('Invalid form data');

return;
}

if (!files.file || !fields.compressionType) {
res.statusCode = 400;

res.end('Missing file or compression type');

return;
}

const file = files.file[0];
const compressionType = fields.compressionType[0];
const fileName = file.originalFilename + '.' + compressionType;

if (!file || !compressionType) {
res.statusCode = 400;

res.end('Missing file or compression type');

return;
}

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

switch (compressionType) {
case 'gzip':
compressedStream = zlib.createGzip();
break;
case 'deflate':
compressedStream = zlib.createDeflate();
break;
case 'br':
compressedStream = zlib.createBrotliCompress();
break;
default:
res.statusCode = 400;
res.end('Unsupported compression type');

return;
}

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

pipeline(fileStream, compressedStream, res, (error) => {
if (error) {
res.statusCode = 500;
res.end('Server error');
}
});

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

server.on('error', (err) => {
console.error('Server error: ', err.message);
});

return server;
}

module.exports = {
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