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Add test solution #121

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Add test solution #121

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128 changes: 126 additions & 2 deletions src/createServer.js
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Original file line number Diff line number Diff line change
@@ -1,8 +1,132 @@
/* eslint-disable no-useless-return */
/* eslint-disable no-console */
'use strict';

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

const uploadDir = path.join(__dirname, 'uploads');

if (!fs.existsSync(uploadDir)) {
fs.mkdirSync(uploadDir);
}

function compressFile(filePath, compressionType, callback) {
const extension =
compressionType === 'gzip'
? '.gzip'
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Avoid nesting ternaries

: compressionType === 'deflate'
? '.deflate'
: '.br';
const outputFilePath = `${filePath}${extension}`;
const compressStream =
compressionType === 'gzip'
? zlib.createGzip()
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Avoid using nested ternaries

: compressionType === 'deflate'
? zlib.createDeflate()
: zlib.createBrotliCompress();

const input = fs.createReadStream(filePath);
const output = fs.createWriteStream(outputFilePath);

input
.pipe(compressStream)
.pipe(output)
.on('finish', () => callback(outputFilePath));
}

function parseMultipartData(body, boundary) {
const parts = body
.split(`--${boundary}`)
.filter((part) => part.trim() !== '' && part !== '--');
const parsed = {};

parts.forEach((part) => {
const headers = part.split('\r\n\r\n')[0];
const content = part.split('\r\n\r\n')[1]?.trimEnd();

if (headers.includes('filename')) {
const match = headers.match(/filename="(.+)"/);

if (match) {
parsed.fileName = match[1];
parsed.fileContent = content;
}
} else if (headers.includes('name="compressionType"')) {
parsed.compressionType = content;
}
});

return parsed;
}

function createServer() {
/* Write your code here */
// Return instance of http.Server class
const server = http.createServer((req, res) => {
if (req.method === 'GET' && req.url === '/') {
res.writeHead(200, { 'Content-Type': 'text/html' });
fs.createReadStream(path.join(__dirname, '/index.html')).pipe(res);
} else if (req.method === 'GET' && req.url === '/compress') {
res.writeHead(400, { 'Content-Type': 'text/html' });
res.end('Error requset');
} else if (req.method === 'POST' && req.url === '/compress') {
let body = '';

req.on('data', (chunk) => {
body += chunk.toString();
});

req.on('end', () => {
const boundary = req.headers['content-type']
.split('; ')[1]
.split('=')[1];

const { fileName, fileContent, compressionType } = parseMultipartData(
body,
boundary,
);

if (!fileName || !fileContent || !compressionType) {
res.writeHead(400, { 'Content-Type': 'text/plain' });
res.end('Invalid form data');

return;
}

const filePath = path.join(uploadDir, fileName);

fs.writeFileSync(filePath, fileContent, 'binary');

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

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

return;
}

compressFile(filePath, compressionType, (compressedFilePath) => {
res.writeHead(200, {
'Content-Type': 'application/octet-stream',
'Content-Disposition': `attachment; filename=${path.basename(compressedFilePath)}`,
});

fs.createReadStream(compressedFilePath).pipe(res);
});
});

req.on('error', (err) => {
console.log('ERROR DANGER', err);
});
} else {
res.writeHead(404, { 'Content-Type': 'text/plain' });
res.end('404 Not Found');
}
});

return server;
}

module.exports = {
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22 changes: 22 additions & 0 deletions src/index.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width= , initial-scale=1.0">
<title>File Compression</title>
</head>
<body>
<h1>File Compression Form</h1>
<form action="/compress" method="POST" enctype="multipart/form-data">
<input type="file" id="file" name="file"><br/><br/>

<select name="compressionType" id="compressionType" required>
<option value="gzib">GZIP</option>
<option value="deflate">Deflate</option>
<option value="br">Brotli</option>
</select>

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