diff --git a/src/app.js b/src/app.js
index 6e754b2..f0c515a 100644
--- a/src/app.js
+++ b/src/app.js
@@ -3,7 +3,4 @@
const { createServer } = require('./createServer');
-createServer().listen(5701, () => {
- console.log(`Server is running on http://localhost:${5701} 🚀`);
- console.log('Available at http://localhost:5701');
-});
+createServer().listen(5701);
diff --git a/src/createServer.js b/src/createServer.js
index 1cf1dda..af88f5d 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -1,8 +1,203 @@
'use strict';
+/* eslint-disable no-console */
+
+const { createReadStream, createWriteStream, mkdirSync } = require('fs');
+const http = require('http');
+const path = require('path');
+
function createServer() {
- /* Write your code here */
- // Return instance of http.Server class
+ const server = new http.Server();
+
+ function getHandler(req, res) {
+ if (req.method !== 'GET') {
+ return;
+ }
+
+ if (req.url !== '/' && req.url !== '') {
+ res.statusCode = 404;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Not Found');
+
+ return;
+ }
+
+ res.statusCode = 200;
+ res.setHeader('Content-Type', 'text/html; charset=utf-8');
+
+ const form = createReadStream(path.join(__dirname, 'index.html'));
+
+ form.on('error', (err) => {
+ console.error('Read stream error:', err);
+
+ if (!res.headersSent) {
+ res.statusCode = 500;
+ res.setHeader('Content-Type', 'text/html; charset=utf-8');
+
+ res.end();
+ } else {
+ res.destroy();
+ }
+ });
+
+ res.on('close', () => {
+ form.destroy();
+ });
+
+ form.pipe(res);
+ }
+
+ function postHandler(req, res) {
+ if (req.method !== 'POST') {
+ return;
+ }
+
+ if (req.url !== '/add-expense' && req.url !== '/submit-expense') {
+ res.statusCode = 404;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Not Found');
+
+ return;
+ }
+
+ const file = path.resolve('db', 'expense.json');
+
+ let raw = '';
+
+ req.setEncoding('utf8');
+
+ req.on('data', (chunk) => {
+ raw += chunk;
+ });
+
+ req.on('end', () => {
+ const contentType = req.headers['content-type'] || '';
+ let payload;
+
+ try {
+ if (contentType.includes('application/json')) {
+ payload = raw ? JSON.parse(raw) : {};
+ } else if (contentType.includes('application/x-www-form-urlencoded')) {
+ const params = new URLSearchParams(raw);
+
+ payload = Object.fromEntries(params.entries());
+ } else {
+ payload = {};
+ }
+ } catch (parseErr) {
+ res.statusCode = 400;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Bad Request');
+
+ return;
+ }
+
+ const expense = {
+ date: payload.date,
+ title: payload.title,
+ amount: payload.amount,
+ };
+
+ // Validation
+ const parsedAmount =
+ typeof expense.amount === 'string'
+ ? parseFloat(expense.amount)
+ : Number(expense.amount);
+ const parsedDate = new Date(expense.date);
+
+ const hasAll = Boolean(expense.date && expense.title && expense.amount);
+ const amountValid =
+ !Number.isNaN(parsedAmount) && Number.isFinite(parsedAmount);
+ const dateValid = !Number.isNaN(parsedDate.getTime());
+
+ if (!hasAll || !amountValid || !dateValid) {
+ if (contentType.includes('application/json')) {
+ res.statusCode = 400;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Invalid payload');
+ } else {
+ res.statusCode = 400;
+ res.setHeader('Content-Type', 'text/html; charset=utf-8');
+
+ res.end(
+ `ErrorInvalid input
Please provide a valid date, title, and numeric amount.
`,
+ );
+ }
+
+ return;
+ }
+
+ const normalizedExpense = {
+ date: expense.date,
+ title: expense.title,
+ amount: String(expense.amount),
+ };
+
+ try {
+ mkdirSync(path.dirname(file), { recursive: true });
+ } catch (mkdirErr) {
+ console.error('Directory create error:', mkdirErr);
+ res.statusCode = 500;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Internal Server Error');
+
+ return;
+ }
+
+ const writer = createWriteStream(file);
+
+ writer.on('error', (error) => {
+ console.error('Write stream error:', error);
+ res.statusCode = 500;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Internal Server Error');
+ });
+
+ const pretty = JSON.stringify(normalizedExpense, null, 2);
+
+ writer.end(pretty, () => {
+ res.statusCode = 200;
+
+ if (contentType.includes('application/json')) {
+ res.setHeader('Content-Type', 'application/json');
+ res.end(JSON.stringify(normalizedExpense));
+ } else {
+ const escaped = pretty
+ .replace(/&/g, '&')
+ .replace(//g, '>');
+
+ res.setHeader('Content-Type', 'text/html; charset=utf-8');
+
+ res.end(
+ `SavedExpense saved
${escaped}`,
+ );
+ }
+ });
+ });
+
+ req.on('error', (err) => {
+ console.error('Request error:', err);
+ res.statusCode = 400;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Bad Request');
+ });
+ }
+
+ server.on('request', getHandler);
+ server.on('request', postHandler);
+
+ server.on('request', (req, res) => {
+ if (req.method !== 'GET' && req.method !== 'POST') {
+ res.statusCode = 405;
+ res.setHeader('Content-Type', 'text/plain');
+ res.end('Method Not Allowed');
+ }
+ });
+
+ server.on('error', () => {});
+
+ return server;
}
module.exports = {
diff --git a/src/index.html b/src/index.html
new file mode 100644
index 0000000..f5e408f
--- /dev/null
+++ b/src/index.html
@@ -0,0 +1,28 @@
+
+
+
+
+
+ Document
+
+
+
+
+