mate-academy · Augustwise · Apr 2, 2026 · Apr 2, 2026
diff --git a/public/index.html b/public/index.html
@@ -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>File Compression</title>
+  </head>
+  <body>
+    <form action="/compress" method="POST" enctype="multipart/form-data">
+      <div>
+        <label for="file">Select a file:</label>
+        <input type="file" id="file" name="file" />
+      </div>
+      <div>
+        <label for="compressionType">Compression type:</label>
+        <select id="compressionType" name="compressionType">
+          <option value="gzip">gzip</option>
+          <option value="deflate">deflate</option>
+          <option value="br">br</option>
+        </select>
+      </div>
+      <div>
+        <button type="submit">Submit</button>
+      </div>
+    </form>
+  </body>
+</html>
diff --git a/src/createServer.js b/src/createServer.js
@@ -1,8 +1,113 @@
 'use strict';
 
+const http = require('http');
+const fs = require('fs');
+const zlib = require('zlib');
+const { IncomingForm } = require('formidable');
+
+const SUPPORTED_TYPES = new Set(['gzip', 'deflate', 'br']);
+
+const EXTENSION_MAP = {
+  gzip: 'gz',
+  deflate: 'dfl',
+  br: 'br',
+};
+
+function getFirstValue(value) {
+  return Array.isArray(value) ? value[0] : value;
+}
+
+function createCompressionStream(compressionType) {
+  switch (compressionType) {
+    case 'gzip':
+      return zlib.createGzip();
+    case 'deflate':
+      return zlib.createDeflate();
+    case 'br':
+      return zlib.createBrotliCompress();
+    default:
+      return null;
+  }
+}
+
+function handleCompressRequest(req, res) {
+  if (req.method !== 'POST') {
+    res.writeHead(400, { 'Content-Type': 'text/plain' });
+    res.end('Bad Request');
+
+    return;
+  }
+
+  const form = new IncomingForm();
+
+  form.parse(req, (error, fields, files) => {
+    if (error) {
+      res.writeHead(400, { 'Content-Type': 'text/plain' });
+      res.end('Bad Request');
+
+      return;
+    }
+
+    const file = getFirstValue(files.file);
+    const compressionType = getFirstValue(fields.compressionType);
+    const filename = file?.originalFilename || file?.filename;
+
+    if (!file || !compressionType || !filename) {
+      res.writeHead(400, { 'Content-Type': 'text/plain' });
+      res.end('Bad Request');
+
+      return;
+    }
+
+    if (!SUPPORTED_TYPES.has(compressionType)) {
+      res.writeHead(400, { 'Content-Type': 'text/plain' });
+      res.end('Bad Request');
+
+      return;
+    }
+
+    const compressionStream = createCompressionStream(compressionType);
+
+    res.writeHead(200, {
+      'Content-Type': 'application/octet-stream',
+      'Content-Disposition': `attachment; filename=${filename}.${EXTENSION_MAP[compressionType]}`,
+    });
+
+    fs.createReadStream(file.filepath)
+      .on('error', () => {
+        res.writeHead(500, { 'Content-Type': 'text/plain' });
+        res.end('Internal Server Error');
+      })
+      .pipe(compressionStream)
+      .on('error', () => {
+        res.writeHead(500, { 'Content-Type': 'text/plain' });
+        res.end('Internal Server Error');
+      })
+      .pipe(res);
+  });
+}
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  const server = http.createServer((req, res) => {
+    if (req.url === '/') {
+      const stream = fs.createReadStream('public/index.html');
+
+      res.writeHead(200, { 'Content-Type': 'text/html' });
+      stream.pipe(res);
+
+      stream.on('error', () => {
+        res.writeHead(500, { 'Content-Type': 'text/plain' });
+        res.end('Error reading file');
+      });
+    } else if (req.url === '/compress') {
+      handleCompressRequest(req, res);
+    } else {
+      res.writeHead(404, { 'Content-Type': 'text/plain' });
+      res.end('Not Found');
+    }
+  });
+
+  return server;
 }
 
 module.exports = {