mate-academy · IvanKovalyoff · Mar 9, 2026 · Mar 9, 2026 · mateacademy-ai-mentor · Mar 9, 2026
diff --git a/.github/workflows/test.yml-template b/.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
diff --git a/db/expense.json b/db/expense.json
@@ -1,5 +1,5 @@
 {
-  "date": "2024-01-25",
-  "title": "Test Expense",
-  "amount": "100"
+  "date": "2026-03-21",
+  "title": "eeeee",
+  "amount": "3"
 }
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 +1,78 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Expense Form</title>
+  <link rel="stylesheet" href="/styles.css">
+</head>
+<body>
+  <form id="expenseForm">
+    <h1>Add Expense</h1>
+
+    <label for="date">Date:</label>
+    <input type="date" id="date" name="date" required>
+
+    <label for="title">Title:</label>
+    <input type="text" id="title" name="title" required>
+
+    <label for="amount">Amount:</label>
+    <input type="number" id="amount" name="amount" step="0.01" required>
+
+    <button type="submit">Submit Expense</button>
+  </form>
+
+  <div id="result"></div>
+
+  <script>
+    const form = document.getElementById('expenseForm');
+    const resultDiv = document.getElementById('result');
+
+    form.addEventListener('submit', async (e) => {
+      e.preventDefault();
+
+      const formData = {
+        date: document.getElementById('date').value,
+        title: document.getElementById('title').value,
+        amount: document.getElementById('amount').value,
+      };
+
+      try {
+        const response = await fetch('/add-expense', {
+          method: 'POST',
+          headers: {
+            'Content-Type': 'application/json',
+          },
+          body: JSON.stringify(formData),
+        });
+
+        const data = await response.json();
+
+        if (response.ok) {
+          resultDiv.innerHTML = `
+            <div class="success">
+              <h2>Expense Saved Successfully!</h2>
+              <pre>${JSON.stringify(data, null, 2)}</pre>
+            </div>
+          `;
+          form.reset();
+        } else {
+          resultDiv.innerHTML = `
+            <div class="error">
+              <h2>Error</h2>
+              <pre>${JSON.stringify(data, null, 2)}</pre>
+            </div>
+          `;
+        }
+      } catch (error) {
+        resultDiv.innerHTML = `
+          <div class="error">
+            <h2>Error</h2>
+            <p>${error.message}</p>
+          </div>
+        `;
+      }
+    });
+  </script>
+</body>
+</html>
diff --git a/public/styles.css b/public/styles.css
@@ -0,0 +1,89 @@
+body {
+  font-family: Arial, sans-serif;
+  max-width: 600px;
+  margin: 50px auto;
+  padding: 20px;
+  background-color: #f5f5f5;
+}
+
+form {
+  background: white;
+  padding: 30px;
+  border-radius: 8px;
+  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+  margin-bottom: 20px;
+}
+
+h1 {
+  color: #333;
+  margin-bottom: 30px;
+}
+
+label {
+  display: block;
+  margin-bottom: 5px;
+  color: #555;
+  font-weight: bold;
+}
+
+input {
+  width: 100%;
+  padding: 10px;
+  margin-bottom: 20px;
+  border: 1px solid #ddd;
+  border-radius: 4px;
+  box-sizing: border-box;
+  font-size: 14px;
+}
+
+button {
+  background-color: #4CAF50;
+  color: white;
+  padding: 12px 30px;
+  border: none;
+  border-radius: 4px;
+  cursor: pointer;
+  font-size: 16px;
+  width: 100%;
+}
+
+button:hover {
+  background-color: #45a049;
+}
+
+#result {
+  background: white;
+  padding: 20px;
+  border-radius: 8px;
+  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
+  display: none;
+}
+
+#result:not(:empty) {
+  display: block;
+}
+
+.success {
+  color: #4CAF50;
+}
+
+.success h2 {
+  margin-top: 0;
+}
+
+.error {
+  color: #f44336;
+}
+
+.error h2 {
+  margin-top: 0;
+}
+
+pre {
+  background-color: #f5f5f5;
+  padding: 15px;
+  border-radius: 4px;
+  overflow-x: auto;
+  color: #333;
+  font-size: 14px;
+}
diff --git a/src/createServer.js b/src/createServer.js
@@ -1,8 +1,129 @@
 'use strict';
 
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+
+/**
+ * Helper function to send HTTP responses
+ * @param {http.ServerResponse} res - Response object
+ * @param {number} statusCode - HTTP status code (200, 404, 500, etc.)
+ * @param {string} contentType - Content-Type header value
+ * @param {string|object} data - Data to send (will be stringified if object)
+ */
+function sendResponse(res, statusCode, contentType, data) {
+  res.writeHead(statusCode, { 'Content-Type': contentType });
+
+  // If data is an object and content type is JSON, stringify it
+  if (typeof data === 'object' && contentType === 'application/json') {
+    res.end(JSON.stringify(data));
+  } else {
+    res.end(data);
+  }
+}
+
 function createServer() {
-  /* Write your code here */
-  // Return instance of http.Server class
+  const server = http.createServer((req, res) => {
+    const { method, url } = req;
+
+    // Serve index.html
+    if (method === 'GET' && url === '/') {
+      const filePath = path.resolve(__dirname, '../public/index.html');
+
+      fs.readFile(filePath, 'utf8', (err, data) => {
+        if (err) {
+          sendResponse(res, 500, 'text/plain', 'Error loading page');
+
+          return;
+        }
+
+        sendResponse(res, 200, 'text/html', data);
+      });
+
+      return;
+    }
+
+    // Serve styles.css
+    if (method === 'GET' && url === '/styles.css') {
+      const filePath = path.resolve(__dirname, '../public/styles.css');
+
+      fs.readFile(filePath, 'utf8', (err, data) => {
+        if (err) {
+          sendResponse(res, 500, 'text/plain', 'Error loading stylesheet');
+
+          return;
+        }
+
+        sendResponse(res, 200, 'text/css', data);
+      });
+
+      return;
+    }
+
+    // Handle POST request - save expense data
+    if (method === 'POST' && url === '/add-expense') {
+      let body = '';
+
+      req.on('data', (chunk) => {
+        body += chunk.toString();
+      });
+
+      req.on('end', () => {
+        let expense;
+
+        try {
+          // Parse JSON body
+          expense = JSON.parse(body);
+        } catch (error) {
+          sendResponse(res, 400, 'application/json', { error: 'invalid JSON' });
+
+          return;
+        }
+
+        // Validate required fields
+        const requiredFields = ['date', 'title', 'amount'];
+        const missingFields = requiredFields.filter((field) => !expense[field]);
+
+        if (missingFields.length > 0) {
+          sendResponse(
+            res,
+            400,
+            'text/plain',
+            `Missing required fields: ${missingFields.join(', ')}`,
+          );
+
+          return;
+        }
+
+        // Save to file
+        const dataPath = path.resolve(__dirname, '../db/expense.json');
+        const dirPath = path.dirname(dataPath);
+
+        // Enshore directory exists
+        if (!fs.existsSync(dirPath)) {
+          fs.mkdirSync(dirPath, { recursive: true });
+        }
+
+        try {
+          fs.writeFileSync(dataPath, JSON.stringify(expense, null, 2));
+
+          // Return sucsess response with JSON
+          sendResponse(res, 200, 'application/json', expense);
+        } catch (error) {
+          sendResponse(res, 500, 'application/json', {
+            error: 'Failed to save expense',
+          });
+        }
+      });
+
+      return;
+    }
+
+    // Handle 404 for all other routes
+    sendResponse(res, 404, 'text/plain', 'Not found');
+  });
+
+  return server;
 }
 
 module.exports = {