mate-academy · PolianskyiDmytro · May 1, 2026 · May 2, 2026
diff --git a/db/expense.json b/db/expense.json
@@ -1,5 +1 @@
-{
-  "date": "2024-01-25",
-  "title": "Test Expense",
-  "amount": "100"
-}
+{"date":"2024-01-25","title":"Test Expense","amount":"100"}
diff --git a/package-lock.json b/package-lock.json
diff --git a/package.json b/package.json
@@ -17,7 +17,7 @@
   "license": "GPL-3.0",
   "devDependencies": {
     "@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 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Document</title>
+</head>
+<body>
+  <form method="POST" action="/add-expense">
+    <input type="date" name="date" />
+    <input type="text" name="title" placeholder="Title" />
+    <input type="number" name="amount" placeholder="Amount" />
+    <button type="submit">Add Expense</button>
+  </form>
+</body>
+</html>
diff --git a/src/createServer.js b/src/createServer.js
@@ -1,8 +1,113 @@
 'use strict';
 
+const http = require('http');
+const path = require('path');
+const fs = require('fs');
+
 function createServer() {
   /* Write your code here */
   // Return instance of http.Server class
+  const server = http.Server();
+
+  return server.on('request', (req, res) => {
+    const url = new URL(req.url, `http://${req.headers.host}`);
+    const pathname = url.pathname.slice(1) || 'index.html';
+    const filePath = path.join('public', pathname);
+    const expensePath = path.join('db', 'expense.json');
+
+    if (req.method === 'POST' && pathname === 'add-expense') {
+      const chunks = [];
+
+      req.on('data', (chunk) => {
+        chunks.push(chunk);
+      });
+
+      req.on('end', () => {
+        const body = Buffer.concat(chunks).toString();
+        const contentType = req.headers['content-type']
+          ? req.headers['content-type'].split(';')[0].trim()
+          : '';
+
+        let result = null;
+
+        if (contentType === 'application/json') {
+          try {
+            result = JSON.parse(body);
+          } catch (err) {
+            res.statusCode = 400;
+            res.end('Bad Request');
+
+            return;
+          }
+        } else if (contentType === 'application/x-www-form-urlencoded') {
+          result = {};
+
+          body.split('&').forEach((pair) => {
+            const [key, value] = pair.split('=');
+
+            if (!key || value === undefined) {
+              result = null;
+
+              res.statusCode = 400;
+              res.end('Bad Request');
+
+              return;
+            }
+            result[key] = decodeURIComponent(value.replace(/\+/g, ' '));
+          });
+        } else {
+          try {
+            result = JSON.parse(body);
+          } catch (err) {
+            result = null;
+
+            res.statusCode = 400;
+            res.end('Bad Request');
+          }
+        }
+
+        const requiredFields = ['date', 'title', 'amount'];
+
+        if (
+          !result ||
+          typeof result !== 'object' ||
+          !requiredFields.every((key) => key in result)
+        ) {
+          res.statusCode = 400;
+          res.end('Bad Request');
+
+          return;
+        }
+
+        if (!fs.existsSync(path.dirname(expensePath))) {
+          fs.mkdirSync(path.dirname(expensePath), { recursive: true });
+        }
+
+        fs.writeFileSync(expensePath, JSON.stringify(result));
+
+        res.statusCode = 200;
+        res.setHeader('Content-Type', 'text/html');
+        res.end(`<html><pre>${JSON.stringify(result, null, 2)}</pre></html>`);
+      });
+    } else {
+      if (!fs.existsSync(filePath)) {
+        res.statusCode = 404;
+        res.end('File not found');
+
+        return;
+      }
+
+      const fileStream = fs.createReadStream(filePath);
+
+      fileStream.pipe(res).on('error', () => {
+        res.statusCode = 500;
+        res.end('Internal Server Error');
+      });
+
+      res.setHeader('Content-Type', 'text/html');
+      res.statusCode = 200;
+    }
+  });
 }
 
 module.exports = {