mate-academy · SerhiyDmytruk · Mar 27, 2026 · Mar 27, 2026 · Mar 27, 2026 · Mar 27, 2026
diff --git a/index.html b/index.html
@@ -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" enctype="multipart/form-data">
+    <input type="file" name="file">
+    <select name="compressionType">
+      <option value="gzip">GZIP Compression</option>
+      <option value="deflate">DEFLATE Compression</option>
+      <option value="br">BR Compression</option>
+    </select>
+
+      <button type="submit">Submit</button>
+  </form>
+</body>
+</html>
diff --git a/package.json b/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@faker-js/faker": "^8.4.1",
     "@mate-academy/eslint-config": "latest",
-    "@mate-academy/scripts": "^1.8.6",
+    "@mate-academy/scripts": "^2.1.3",
     "axios": "^1.7.2",
     "eslint": "^8.57.0",
     "eslint-plugin-jest": "^28.6.0",

diff --git a/src/createServer.js b/src/createServer.js
@@ -1,8 +1,115 @@
+/* eslint-disable no-console */
 'use strict';
 
+const http = require('node:http');
+const fs = require('node:fs');
+const path = require('node:path');
+const mime = require('mime-types');
+const zlib = require('node:zlib');
+const { formidable } = require('formidable');
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  return http.createServer((req, res) => {
+    const url = new URL(req.url || '', `http://${req.headers.host}`);
+    const requestPath = url.pathname.slice(1) || 'index.html';
+    const realPath = requestPath;
+
+    const compressionMap = {
+      gzip: {
+        extension: 'gz',
+        createStream: () => zlib.createGzip(),
+      },
+      deflate: {
+        extension: 'dfl',
+        createStream: () => zlib.createDeflate(),
+      },
+      br: {
+        extension: 'br',
+        createStream: () => zlib.createBrotliCompress(),
+      },
+    };
+
+    if (url.pathname === '/compress' && req.method === 'POST') {
+      const form = formidable({ multiples: false });
+
+      form.parse(req, (err, fields, files) => {
+        if (err) {
+          res.statusCode = 400;
+          res.end('Invalid form');
+
+          return;
+        }
+
+        const compressionType = Array.isArray(fields.compressionType)
+          ? fields.compressionType[0]
+          : fields.compressionType;
+
+        const file = Array.isArray(files.file) ? files.file[0] : files.file;
+
+        if (!file || !compressionType) {
+          res.statusCode = 400;
+          res.end('Invalid form');
+
+          return;
+        }
+
+        const compressionConfig = compressionMap[compressionType];
+
+        if (!compressionConfig) {
+          res.statusCode = 400;
+          res.end('Unsupported compression type');
+
+          return;
+        }
+
+        const readStream = fs.createReadStream(file.filepath);
+        const compressStream = compressionConfig.createStream();
+        const outputFileName = `${file.originalFilename}.${compressionConfig.extension}`;
+
+        res.statusCode = 200;
+
+        res.setHeader(
+          'Content-Disposition',
+          `attachment; filename=${outputFileName}`,
+        );
+
+        readStream.on('error', () => {
+          res.statusCode = 500;
+          res.end('Server error');
+        });
+
+        compressStream.on('error', () => {
+          res.statusCode = 500;
+          res.end('Server error');
+        });
+
+        readStream.pipe(compressStream).pipe(res);
+      });
+
+      return;
+    }
+
+    if (url.pathname === '/compress' && req.method === 'GET') {
+      res.statusCode = 400;
+      res.end('Wrong URL');
+
+      return;
+    }
+
+    if (url.pathname === '/' && req.method === 'GET') {
+      const fileStream = fs.createReadStream(realPath);
+      const mimeType = mime.contentType(path.extname(realPath)) || 'text/plain';
+
+      res.statusCode = 200;
+      res.setHeader('Content-Type', mimeType);
+      fileStream.pipe(res);
+
+      return;
+    }
+
+    res.statusCode = 404;
+    res.end('Not Found');
+  });
 }
 
 module.exports = {

diff --git a/tests/createServer.test.js b/tests/createServer.test.js
@@ -29,12 +29,15 @@ function stringToStream(str) {
 const compressionTypes = {
   gzip: {
     decompress: util.promisify(zlib.gunzip),
+    extension: 'gz',
   },
   deflate: {
     decompress: util.promisify(zlib.inflate),
+    extension: 'dfl',
   },
   br: {
     decompress: util.promisify(zlib.brotliDecompress),
+    extension: 'br',
   },
 };
 
@@ -96,7 +99,7 @@ describe('createServer', () => {
       });
 
       Object.entries(compressionTypes).forEach(
-        ([compressionType, { decompress }]) => {
+        ([compressionType, { decompress, extension }]) => {
           describe(`compression type "${compressionType}"`, () => {
             it('should respond with 200 status code', () => {
               expect.assertions(1);
@@ -124,7 +127,7 @@ describe('createServer', () => {
                   headers: formData.getHeaders(),
                 })
                 .then((res) => {
-                  const expectedHeader = `attachment; filename=${filename}.${compressionType}`;
+                  const expectedHeader = `attachment; filename=${filename}.${extension}`;
 
                   expect(res.headers['content-disposition']).toBe(
                     expectedHeader,