node_compression-app_TetSh

.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

@@ -1,10 +1,110 @@
+/* eslint-disable no-console */
 'use strict';
 
+const http = require('http');
+const zlib = require('zlib');
+const { pipeline, Readable } = require('stream');
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  return http.createServer((req, res) => {
+    const { method, url } = req;
+
+    if (url === '/' && method === 'GET') {
+      res.writeHead(200, { 'Content-type': 'text/html' });
+
+      return res.end(`
+        <form action="/compress" method="POST" enctype="multipart/form-data">
+          <input type="file" name="file" required>
+          <select name="compressionType">
+            <option value="gzip">gzip</option>
+            <option value="deflate">deflate</option>
+            <option value="br">br</option>
+          </select>
+          <button type="submit">Compress</button>
+        </form>
+      `);
+    }
+
+    if (url !== '/compress') {
+      res.statusCode = 404;
+
+      return res.end('The endpoint does not exist');
+    }
+
+    if (method !== 'POST') {
+      res.statusCode = 400;
+
+      return res.end('Only POST requests are allowed');
+    }
+
+    let bodyBuffer = Buffer.alloc(0);
+    let isStreamingStarted = false;
+
+    req.on('data', (chunk) => {
+      if (isStreamingStarted) {
+        return;
+      }
+
+      bodyBuffer = Buffer.concat([bodyBuffer, chunk]);
+
+      const bodyStr = bodyBuffer.toString('binary');
+      const filePartHeaderMatch = bodyStr.match(
+        /filename="(.+?)"\r\nContent-Type: .+?\r\n\r\n/,
+      );
+      const typeMatch = bodyStr.match(
+        /name="compressionType"\r\n\r\n(.+?)\r\n/,
+      );
+
+      if (filePartHeaderMatch && typeMatch) {
+        isStreamingStarted = true;
+
+        const filename = filePartHeaderMatch[1];
+        const compressionType = typeMatch[1].trim();
+
+        const validTypes = {
+          gzip: { create: zlib.createGzip, ext: 'gz' },
+          deflate: { create: zlib.createDeflate, ext: 'dfl' },
+          br: { create: zlib.createBrotliCompress, ext: 'br' },
+        };
+
+        const config = validTypes[compressionType];
+
+        if (!config) {
+          res.statusCode = 400;
+
+          return res.end('Unsupported compression type');
+        }
+
+        // Prepare response
+        res.writeHead(200, {
+          'Content-Type': 'application/octet-stream',
+          'Content-Disposition': `attachment; filename="${filename}.${compressionType}"`,
+        });
+
+        const headerEndIndex =
+          bodyStr.indexOf(filePartHeaderMatch[0]) +
+          filePartHeaderMatch[0].length;
+        const initialFileData = bodyBuffer.slice(headerEndIndex);
+
+        const boundary = bodyStr.split('\r\n')[0];
+        const footerIndex = initialFileData
+          .toString('binary')
+          .indexOf(boundary);
+
+        const actualFileSource = Readable.from(
+          footerIndex !== -1
+            ? initialFileData.slice(0, footerIndex - 2)
+            : initialFileData,
+        );
+
+        pipeline(actualFileSource, config.create(), res, (err) => {
+          if (err) {
+            console.error(err);
+          }
+        });
+      }
+    });
+  });
 }
 
-module.exports = {
-  createServer,
-};
+module.exports = { createServer };