solution

src/createServer.js

@@ -1,10 +1,121 @@
+/* eslint-disable no-console */
 'use strict';
 
-function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+const { pipeline } = require('stream');
+const zlib = require('zlib');
+const { IncomingForm } = require('formidable');
+
+const compressionMap = {
+  gzip: { stream: zlib.createGzip, ext: '.gz' },
+  deflate: { stream: zlib.createDeflate, ext: '.deflate' },
+  br: { stream: zlib.createBrotliCompress, ext: '.br' },
+};
+
+const uploadsDir = path.join(__dirname, 'uploads');
+
+if (!fs.existsSync(uploadsDir)) {
+  fs.mkdirSync(uploadsDir);
 }
 
-module.exports = {
-  createServer,
+const handleCompression = (req, res) => {
+  const form = new IncomingForm({
+    multiples: false,
+    keepExtensions: true,
+    uploadDir: uploadsDir,
+  });
+
+  form.parse(req, (err, fields, files) => {
+    if (err) {
+      console.error('Error parsing form data:', err);
+      res.writeHead(400);
+
+      return res.end('Error parsing form data');
+    }
+
+    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 || !compressionMap[compressionType]) {
+      console.log('Validation failed:', { file, compressionType });
+      res.writeHead(400);
+
+      return res.end('Invalid form or compression type');
+    }
+
+    const filepath = file.filepath;
+    const originalFilename = file.originalFilename;
+
+    if (!filepath) {
+      console.log('Missing file path:', file);
+      res.writeHead(400);
+
+      return res.end('Missing file path');
+    }
+
+    const { stream: compressor, ext } = compressionMap[compressionType];
+
+    const finalExt = compressionType === 'gzip' ? '.gzip' : ext;
+    const compressedFileName = originalFilename + finalExt;
+    // --- КІНЕЦЬ ВИПРАВЛЕНЬ ---
+
+    res.writeHead(200, {
+      'Content-Type': 'application/octet-stream',
+
+      'Content-Disposition': `attachment; filename=${compressedFileName}`,
+      // --- КІНЕЦЬ ВИПРАВЛЕНЬ ДЛЯ ТЕСТУ ---
+    });
+
+    pipeline(fs.createReadStream(filepath), compressor(), res, (error) => {
+      fs.unlink(filepath, (unlinkErr) => {
+        if (unlinkErr) {
+          console.error(
+            `Error deleting temporary file ${filepath}:`,
+            unlinkErr,
+          );
+        }
+      });
+
+      if (error) {
+        console.error('Compression pipeline failed:', error);
+        res.writeHead(500);
+        res.end('Compression failed');
+      }
+    });
+  });
 };
+
+function createServer() {
+  return http.createServer((req, res) => {
+    if (req.method === 'GET' && req.url === '/') {
+      const htmlPath = path.join(process.cwd(), 'public', 'index.html');
+
+      fs.readFile(htmlPath, (err, data) => {
+        if (err) {
+          console.error('Error loading html:', err);
+          res.writeHead(500);
+          res.end('Error loading html');
+
+          return;
+        }
+
+        res.writeHead(200, { 'Content-Type': 'text/html' });
+        res.end(data);
+      });
+    } else if (req.url === '/compress' && req.method === 'POST') {
+      handleCompression(req, res);
+    } else if (req.url === '/compress') {
+      res.writeHead(400, { 'Content-Type': 'text/plain' });
+      res.end('Only POST is allowed on /compress');
+    } else {
+      res.writeHead(404);
+      res.end('Not found');
+    }
+  });
+}
+
+module.exports = { createServer };

src/index.js

@@ -3,7 +3,7 @@
 
 'use strict';
 
-const { createServer } = require('./createServer');
+const { createServer } = require('../src/createServer');
 
 createServer().listen(5700, () => {
   console.log('Server started! 🚀');

src/uploads/9c4f4fedd64ebf5e46f6d4409.ogg

@@ -0,0 +1,3 @@
+Capio ex odio suffoco. Voluptatibus id vitium benigne soluta virtus. Depraedor concido denique sed conitor conservo spargo comitatus abbas.
+Adulatio venia viriliter distinctio sollicito artificiose asperiores. Adsidue vergo creo concido commodi suspendo taedium sumo ultra. Varietas censura claudeo blandior amissio patrocinor.
+Uter dolores caries tenax umerus conicio crastinus et tenus tergum. Ipsum congregatio creber cito iure deleniti. Harum cras canis perspiciatis adfero.

src/uploads/9c4f4fedd64ebf5e46f6d440a.xsl

@@ -0,0 +1,3 @@
+Nostrum ab caelestis amaritudo aggero aliqua cito trucido verus admitto. Ex arcesso talis. Crepusculum tenus abbas.
+Certus patria adimpleo crebro conitor appello. Degenero turba appello carus arto. Clamo absque bardus demitto.
+Tondeo tepesco id pecto charisma nisi tutis. Aeneus concedo theatrum curto statua tribuo itaque addo aegrus. Tyrannus vado suppellex textor quae.

src/uploads/e926fd0682698b7e511499d09.ifb

@@ -0,0 +1,3 @@
+Statua pauci demens tyrannus administratio bestia versus. Sulum peior iste auctor capio temeritas. Vesper impedit deduco confido vulticulus sit amo conor.
+Subito autus et cauda calco territo canto admoveo avaritia cimentarius. Eos earum contabesco utique. Cur tolero adipisci illo.
+Tero arx asperiores accedo. Copia careo statua cupiditate coma desparatus. Conventus aufero dapifer aqua cado cum utique.

src/uploads/e926fd0682698b7e511499d0a.svgz

@@ -0,0 +1,3 @@
+Aequitas enim colligo thymbra tabgo solium vulnus voluptas patria apparatus. Vergo facilis vox tactus. Vilitas valens torrens magni tolero balbus.
+Corporis triumphus depromo crastinus clamo una stultus. Acies alo speciosus votum attero annus casus adficio. Vitiosus decumbo vestigium vinco amoveo cunctatio turbo clamo.
+Despecto tabesco appello. Certus repudiandae dolor. Cimentarius calcar vociferor aestus.