mate-academy · DmytroMykoliv · Mar 21, 2026 · Mar 21, 2026 · Mar 21, 2026 · mateacademy-ai-mentor
diff --git a/.github/workflows/test.yml-template b/.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
diff --git a/package-lock.json b/package-lock.json
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/public/index.html b/public/index.html
@@ -0,0 +1,36 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <base href="/" />
+    <title>Document</title>
+  </head>
+  <body>
+    <h1>Compress your files!</h1>
+    <form
+      id="compressionForm"
+      action="/compress"
+      method="POST"
+      enctype="multipart/form-data"
+    >
+      <div class="form__item">
+        <label for="file">File:</label>
+        <input type="file" id="file" name="file" />
+      </div>
+
+      <div class="form__item">
+        <label for="compressionType">Compression Type:</label>
+        <select name="compressionType" id="compressionType">
+          <option value="" selected disabled>
+            Select type
+          </option>
+          <option value="gzip">GZIP</option>
+          <option value="deflate">Deflate</option>
+          <option value="brotli">Brotli</option>
+        </select>
+      </div>
+      <button type="submit">Submit</button>
+    </form>
+  </body>
+</html>
diff --git a/src/createServer.js b/src/createServer.js
@@ -1,8 +1,113 @@
+/* eslint-disable no-console */
 'use strict';
 
+const { Server } = require('http');
+const fs = require('fs');
+const path = require('path');
+const mime = require('mime-types');
+const { pipeline } = require('stream');
+const zlib = require('zlib');
+const formidable = require('formidable');
+
+const compressMap = new Map([
+  ['gzip', { ext: 'gz', compressor: () => zlib.createGzip() }],
+  ['deflate', { ext: 'dfl', compressor: () => zlib.createDeflate() }],
+  ['br', { ext: 'br', compressor: () => zlib.createBrotliCompress() }],
+]);
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  const server = new Server();
+
+  server.on('request', (req, res) => {
+    try {
+      const url = new URL(req.url || '', `http://${req.headers.host}`);
+      const requestedPath = url.pathname.slice(1) || 'index.html';
+      const realPath = path.join('public', requestedPath);
+      const mimeType = mime.contentType(path.extname(realPath)) || 'text/plain';
+      const form = new formidable.IncomingForm();
+
+      if (requestedPath === 'compress') {
+        if (req.method === 'POST') {
+          form.parse(req, (err, fields, files) => {
+            if (err) {
+              console.log('[Error]: ', err);
+              res.statusCode = 400;
+              res.end('Error: form is invalid');
+
+              return;
+            }
+
+            const file = Array.isArray(files.file) ? files.file[0] : files.file;
+            const compressionType = Array.isArray(fields.compressionType)
+              ? fields.compressionType[0]
+              : fields.compressionType;
+
+            if (
+              !file ||
+              !compressionType ||
+              !compressMap.has(compressionType)
+            ) {
+              res.statusCode = 400;
+              res.end('Error: File or compressionType is missing');
+
+              return;
+            }
+
+            const inputPath = file.filepath;
+            const readStream = fs.createReadStream(inputPath);
+            const { ext, compressor } = compressMap.get(compressionType);
+
+            res.writeHead(200, {
+              'Content-Type': 'application/octet-stream',
+              'Content-Disposition': `attachment; filename=${file.originalFilename}.${ext}`,
+            });
+
+            pipeline(readStream, compressor(), res, (error) => {
+              fs.unlink(file.filepath, () => {});
+
+              if (error) {
+                console.log(error);
+
+                if (!res.headersSent) {
+                  res.statusCode = 500;
+                  res.end('Error: Compression failed!');
+                } else {
+                  res.destroy();
+                }
+              }
+            });
+          });
+        } else {
+          res.statusCode = 400;
+          res.end('Error: Wrong method!');
+        }
+
+        return;
+      }
+
+      if (!fs.existsSync(realPath)) {
+        res.statusCode = 404;
+        res.end('Not Found');
+
+        return;
+      }
+
+      const dataStream = fs.createReadStream(realPath);
+
+      res.statusCode = 200;
+      res.setHeader('Content-Type', mimeType);
+      dataStream.pipe(res);
+    } catch (error) {
+      res.statusCode = 500;
+      res.end('Server Error');
+    }
+  });
+
+  server.on('error', (error) => {
+    console.error('An error occurred:', error);
+  });
+
+  return server;
 }
 
 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,