Solution

.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",
@@ -30,5 +30,8 @@
   },
   "mateAcademy": {
     "projectType": "javascript"
+  },
+  "dependencies": {
+    "busboy": "^1.6.0"
   }
 }

src/createServer.js

@@ -1,10 +1,125 @@
 'use strict';
 
+const http = require('http');
+const zlib = require('zlib');
+const busboy = require('busboy');
+
+const data = `
+  <form method="POST" action="/compress" enctype="multipart/form-data">
+    <input type="file" name="file" required>
+    <select name="compressionType" required>
+      <option value="gzip">gzip</option>
+      <option value="deflate">deflate</option>
+      <option value="br">br</option>
+    </select>
+    <button type="submit">Compress</button>
+  </form>
+`;
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  return http.createServer((req, res) => {
+    if (req.method === 'GET') {
+      if (req.url === '/') {
+        res.writeHead(200, { 'Content-Type': 'text/html' });
+        res.end(data);
+      } else if (req.url === '/compress') {
+        res.writeHead(400, { 'Content-Type': 'text/plain' });
+        res.end('Incorrect request');
+      } else {
+        res.writeHead(404, { 'Content-Type': 'text/plain' });
+        res.end('Page not found');
+      }
+
+      return;
+    }
+
+    if (req.method === 'POST') {
+      if (req.url === '/compress') {
+        const bb = busboy({ headers: req.headers });
+
+        bb.on('error', () => {
+          res.writeHead(400);
+          res.end('Form parsing error');
+        });
+
+        let filename = '';
+        let type = '';
+        let hasFile = false;
+        const chunks = [];
+        let fileStreamError = false;
+
+        bb.on('file', (fieldname, file, info) => {
+          hasFile = true;
+          filename = info.filename;
+
+          file.on('data', (chunk) => {
+            chunks.push(chunk);
+          });
+
+          file.on('error', () => {
+            fileStreamError = true;
+          });
+        });
+
+        bb.on('field', (fieldname, val) => {
+          if (fieldname === 'compressionType') {
+            type = val;
+          }
+        });
+
+        bb.on('finish', () => {
+          if (fileStreamError) {
+            res.writeHead(500, { 'Content-Type': 'text/plain' });
+            res.end('Stream error');
+
+            return;
+          }
+
+          if (!hasFile || !filename || !type) {
+            res.writeHead(400, { 'Content-Type': 'text/plain' });
+            res.end('Invalid form');
+
+            return;
+          }
+
+          if (!['gzip', 'deflate', 'br'].includes(type)) {
+            res.writeHead(400, { 'Content-Type': 'text/plain' });
+            res.end('Unsupported type');
+
+            return;
+          }
+
+          const rawFile = Buffer.concat(chunks);
+          let compressedFile;
+
+          switch (type) {
+            case 'gzip':
+              compressedFile = zlib.gzipSync(rawFile);
+              break;
+            case 'deflate':
+              compressedFile = zlib.deflateSync(rawFile);
+              break;
+            case 'br':
+              compressedFile = zlib.brotliCompressSync(rawFile);
+              break;
+          }
+
+          res.writeHead(200, {
+            'Content-Type': 'application/octet-stream',
+            'Content-Disposition': `attachment; filename=${filename}.${type}`,
+          });
+          res.end(compressedFile);
+        });
+
+        req.pipe(bb);
+
+        return;
+      }
+
+      res.writeHead(404, { 'Content-Type': 'text/plain' });
+      res.end('Page not found');
+    }
+  });
 }
 
-module.exports = {
-  createServer,
-};
+module.exports = { createServer };