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mate-academy · Jul 8, 2024 · 93b35d8 · 93b35d8
1 parent c46de53
commit 93b35d8
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Showing 4 changed files with 125 additions and 5 deletions.
diff --git a/src/compressionTypes.js b/src/compressionTypes.js
@@ -0,0 +1,3 @@
+const compressionTypes = ['gzip', 'deflate', 'br'];
+
+module.exports = { compressionTypes };
diff --git a/src/createServer.js b/src/createServer.js
@@ -1,10 +1,85 @@
+/* eslint-disable no-console */
 'use strict';
 
+const http = require('http');
+const fs = require('fs');
+const formidable = require('formidable');
+const { getCompressedFile } = require('./getCompressedFile');
+const { compressionTypes } = require('./compressionTypes');
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  const server = new http.Server();
+
+  server.on('request', (req, res) => {
+    const url = new URL(req.url, `http://${req.headers.host}`);
+    const form = new formidable.IncomingForm();
+
+    if (url.pathname !== '/compress') {
+      res.statusCode = 404;
+      res.end('Trying to access a non-existing route!');
+
+      return;
+    }
+
+    if (url.req.method !== 'POST') {
+      res.statusCode = 400;
+      res.end('Use POST request method instead!');
+
+      return;
+    }
+
+    if (url.pathname === '/' && req.method === 'GET') {
+      res.statusCode = 200;
+      res.end('Ready!');
+
+      return;
+    }
+
+    form.parse(req, (err, { compressionType: fields }, { file: files }) => {
+      if (err || !fields || !files) {
+        res.statusCode = 400;
+        res.end('Bad request, form has errors');
+
+        return;
+      }
+
+      const [compressionType] = fields;
+      const [file] = files;
+
+      if (!compressionTypes.includes(compressionType)) {
+        res.statusCode = 404;
+        res.end('Bad Request: Compression type not supported');
+
+        return;
+      }
+
+      res.setHeader(
+        'Content-Disposition',
+        `attachment; filename=${file.originalFilename}.${compressionType}`,
+      );
+
+      const fileStream = fs.createReadStream(file.filepath);
+
+      fileStream
+        .on('error', (error) => {
+          res.statusCode = 500;
+          res.end('Internal Server Error: Failed to read file', error);
+        })
+        .pipe(getCompressedFile(compressionType))
+        .on('error', (error) => {
+          res.statusCode = 500;
+          res.end('Internal Server Error: Failed to compress file', error);
+        })
+        .pipe(res)
+        .on('error', (error) => {
+          console.error('Error sending response:', error);
+        });
+
+      res.on('error', () => fileStream.destroy());
+    });
+  });
+
+  return server;
 }
 
-module.exports = {
-  createServer,
-};
+module.exports = { createServer };
diff --git a/src/getCompressedFile.js b/src/getCompressedFile.js
@@ -0,0 +1,16 @@
+const zlib = require('zlib');
+
+const getCompressedFile = (compressionType) => {
+  switch (compressionType) {
+    case 'gzip':
+      return zlib.createGzip();
+    case 'deflate':
+      return zlib.createDeflate();
+    case 'br':
+      return zlib.createBrotliCompress();
+    default:
+      return null;
+  }
+};
+
+module.exports = { getCompressedFile };
diff --git a/src/index.html b/src/index.html
@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Compression App</title>
+</head>
+
+<body>
+  <form id="compressionForm" enctype="multipart/form-data" method="post" action="/compress">
+    <label for="file">Select a file:</label>
+    <input type="file" id="file" name="file" required><br><br>
+
+    <label for="compressionType">Select compression type:</label>
+    <select id="compressionType" name="compressionType" required>
+      <option value="gzip">GZIP</option>
+      <option value="deflate">Deflate</option>
+      <option value="br">Brotli</option>
+    </select><br><br>
+
+    <button type="submit">Compress</button>
+  </form>
+</body>
+
+</html>