solution

.claude/settings.local.json

@@ -0,0 +1,8 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(npm test:*)",
+      "Bash(npm run:*)"
+    ]
+  }
+}

.github/workflows/test.yml-template

@@ -0,0 +1,23 @@
+name: Test
+
+on:
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [20.x]
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install
+    - run: npm test

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",

src/createServer.js

@@ -1,8 +1,139 @@
 'use strict';
 
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+const zlib = require('zlib');
+const { formidable } = require('formidable');
+
+// Map compression types to their file extensions
+const extensionMap = new Map([
+  ['gzip', '.gz'],
+  ['deflate', '.dfl'],
+  ['br', '.br'],
+]);
+
+// Map compression types to their zlib stream creators
+const compressionStreamMap = new Map([
+  ['gzip', () => zlib.createGzip()],
+  ['deflate', () => zlib.createDeflate()],
+  ['br', () => zlib.createBrotliCompress()],
+]);
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  const server = http.createServer((req, res) => {
+    // Handle root path - serve HTML file
+    if (req.url === '/' && req.method === 'GET') {
+      const htmlPath = path.join(__dirname, 'public', 'index.html');
+
+      fs.readFile(htmlPath, 'utf8', (err, data) => {
+        if (err) {
+          res.writeHead(500, { 'Content-Type': 'text/plain' });
+          res.end('Internal Server Error');
+
+          return;
+        }
+
+        res.writeHead(200, { 'Content-Type': 'text/html' });
+        res.end(data);
+      });
+
+      return;
+    }
+
+    // Handle CSS file
+    if (req.url === '/styles.css' && req.method === 'GET') {
+      const cssPath = path.join(__dirname, 'public', 'styles.css');
+
+      fs.readFile(cssPath, 'utf8', (err, data) => {
+        if (err) {
+          res.writeHead(404, { 'Content-Type': 'text/plain' });
+          res.end('Not found');
+
+          return;
+        }
+
+        res.writeHead(200, { 'Content-Type': 'text/css' });
+        res.end(data);
+      });
+
+      return;
+    }
+
+    // Handle /compress endpoint
+    if (req.url === '/compress') {
+      if (req.method !== 'POST') {
+        res.writeHead(400, { 'Content-Type': 'text/plain' });
+        res.end('Bad Request: Only POST method is allowed');
+
+        return;
+      }
+
+      const form = formidable({});
+
+      form.parse(req, (err, fields, files) => {
+        if (err) {
+          res.writeHead(400, { 'Content-Type': 'text/plain' });
+          res.end('Bad Request: Could not parse form data');
+
+          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) {
+          res.writeHead(400, { 'Content-Type': 'text/plain' });
+          res.end('Bad Request: No file provided');
+
+          return;
+        }
+
+        if (!compressionType) {
+          res.writeHead(400, { 'Content-Type': 'text/plain' });
+          res.end('Bad Request: No compression type provided');
+
+          return;
+        }
+
+        // Validate compression type using the Map
+        if (!extensionMap.has(compressionType)) {
+          res.writeHead(400, { 'Content-Type': 'text/plain' });
+          res.end('Bad Request: Unsupported compression type');
+
+          return;
+        }
+
+        // Get the correct file extension from the Map
+        const fileName = file.originalFilename;
+        const extension = extensionMap.get(compressionType);
+        const compressedFileName = `${fileName}${extension}`;
+
+        // Get the compression stream creator from the Map
+        const createCompressionStream =
+          compressionStreamMap.get(compressionType);
+        const compressionStream = createCompressionStream();
+
+        res.writeHead(200, {
+          'Content-Type': 'application/octet-stream',
+          'Content-Disposition': `attachment; filename=${compressedFileName}`,
+        });
+
+        fs.createReadStream(file.filepath).pipe(compressionStream).pipe(res);
+      });
+
+      return;
+    }
+
+    // Handle 404 for all other routes
+    res.writeHead(404, { 'Content-Type': 'text/plain' });
+    res.end('Not found');
+  });
+
+  return server;
 }
 
 module.exports = {

src/public/index.html

@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>File Compression App</title>
+  <link rel="stylesheet" href="/styles.css">
+</head>
+<body>
+  <div class="container">
+    <h1>🗜️ File Compression App</h1>
+    <form action="/compress" method="POST" enctype="multipart/form-data">
+      <div class="form-group">
+        <label for="file">Select File:</label>
+        <input type="file" name="file" id="file" required>
+      </div>
+
+      <div class="form-group">
+        <label for="compressionType">Compression Type:</label>
+        <select name="compressionType" id="compressionType" required>
+          <option value="gzip">Gzip (.gz)</option>
+          <option value="deflate">Deflate (.dfl)</option>
+          <option value="br">Brotli (.br)</option>
+        </select>
+      </div>
+
+      <button type="submit">Compress File</button>
+    </form>
+
+    <div class="info">
+      <strong>ℹ️ Info:</strong>
+      Select a file and choose a compression algorithm.
+      The compressed file will be downloaded automatically.
+    </div>
+  </div>
+</body>
+</html>

src/public/styles.css

@@ -0,0 +1,62 @@
+body {
+  font-family: Arial, sans-serif;
+  max-width: 600px;
+  margin: 50px auto;
+  padding: 20px;
+  background-color: #f5f5f5;
+}
+
+.container {
+  background: white;
+  padding: 30px;
+  border-radius: 8px;
+  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
+}
+
+h1 {
+  color: #333;
+  margin-bottom: 20px;
+}
+
+.form-group {
+  margin-bottom: 20px;
+}
+
+label {
+  display: block;
+  margin-bottom: 5px;
+  color: #555;
+  font-weight: bold;
+}
+
+input[type="file"],
+select {
+  width: 100%;
+  padding: 10px;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  box-sizing: border-box;
+}
+
+button {
+  background-color: #4CAF50;
+  color: white;
+  padding: 12px 30px;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 16px;
+  width: 100%;
+}
+
+button:hover {
+  background-color: #45a049;
+}
+
+.info {
+  margin-top: 20px;
+  padding: 15px;
+  background-color: #e7f3fe;
+  border-left: 4px solid #2196F3;
+  color: #333;
+}

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,