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solution #92

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78 changes: 76 additions & 2 deletions src/createServer.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,82 @@
'use strict';

const http = require('http');
const { Readable } = require('stream');
const { getCompression } = require('./getCompression');
const multer = require('multer');

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

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

if (pathName === '/' && req.method === 'GET') {
res.statusCode = 200;
res.end('Trying send a GET request to / endpoint');

return;
};

if (pathName !== '/compress') {
res.statusCode = 404;
res.end('Trying access a non-existent endpoint');

return;
};

if (pathName === '/compress' && req.method === 'GET') {
res.statusCode = 400;
res.end('Trying send a GET request to /compress endpoint');

return;
};

const download = multer().single('file');

download(req, res, (err) => {
if (err) {
res.statusCode = 400;
res.end('An unsupported compression type is provided');

return;
}

if (!req.file) {
res.statusCode = 400;
res.end('No file is provided');

return;
}

const compressionType = req.body.compressionType;
const compress = getCompression(compressionType);
const buffer = req.file.buffer;

if (!compress) {
res.statusCode = 400;
res.end('No compression type is provided');

return;
}

const fileName = `${req.file.originalname}.${compressionType}`;
const stream = new Readable();

stream.push(buffer);
stream.push(null);

res.writeHead(200, {
'Content-Type': 'application/octet-stream',
'Content-Disposition': `attachment; filename=${fileName}`,
});

stream.pipe(compress).pipe(res);
});
});

return server;
}

module.exports = {
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20 changes: 20 additions & 0 deletions src/getCompression.js
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Original file line number Diff line number Diff line change
@@ -0,0 +1,20 @@
'use strict';

const zlib = require('zlib');

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

module.exports = {
getCompression,
};
29 changes: 29 additions & 0 deletions src/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,29 @@
<!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>
<h1>Compression types</h1>

<form action="/compress" method="post">
<label for="index">Enter file name</label>
<input type="text" id="index">

<br>

<label for="select">Select compression type</label>
<select name="compressionType" id="select">
<option value="gzip">gzip</option>
<option value="deflate">deflate</option>
<option value="br">br</option>
</select>

<br>

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