From ae40cfe9ffa13da1493c7f09ee333f95810f1650 Mon Sep 17 00:00:00 2001
From: Oleksandr Rad <clavigo365@gmail.com>
Date: Thu, 17 Apr 2025 13:12:39 +0300
Subject: [PATCH 1/3] add solution

---
 src/createServer.js | 53 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/src/createServer.js b/src/createServer.js
index 1cf1dda..14927fd 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -1,8 +1,61 @@
 'use strict';
 
+const http = require('http');
+const { IncomingForm } = require('formidable');
+const fs = require('fs');
+
 function createServer() {
   /* Write your code here */
   // Return instance of http.Server class
+  return http.createServer(async (req, res) => {
+    if (req.method === 'POST' && req.url === '/add-expense') {
+      const form = new IncomingForm({ multiples: false });
+
+      try {
+        const [fields] = await form.parse(req);
+
+        const { date, title, amount } = fields;
+
+        if (!date || !title || !amount) {
+          res.writeHead(400, { 'Content-Type': 'text/plain' });
+
+          return res.end('Missing required fields');
+        }
+
+        const result = JSON.stringify(fields);
+
+        // console.log('Fields:', fields);
+
+        fs.writeFileSync('db/expense.json', result);
+
+        res.writeHead(200, { 'Content-Type': 'application/json' });
+        res.end(result);
+
+        // res.end(`<div>
+        //   <h1>Date: ${fields['date']}</h1>
+        //   <h1>Title: ${fields['title']}</h1>
+        //   <h1>Amount: ${fields['amount']}</h1>
+        //   </div`);
+      } catch (err) {
+        res.writeHead(500);
+        res.end('Error parsing form');
+      }
+    } else if (req.method === 'GET' && req.url === '/') {
+      res.statusCode = 200;
+      res.setHeader('Content-type', 'text/html');
+
+      res.end(`<form method="POST" action="/submit-expense" enctype="multipart/form-data">
+        <input name="date" type="date" required>
+        <input name="title" type="text" required>
+        <input name="amount" type="number" required>
+
+        <button type="submit">Submit</button>
+      </form>`);
+    } else {
+      res.statusCode = 404;
+      res.end('Page not found');
+    }
+  });
 }
 
 module.exports = {

From e43d19dec90aba9eb8db00fc366feae94f676966 Mon Sep 17 00:00:00 2001
From: Oleksandr Rad <clavigo365@gmail.com>
Date: Fri, 18 Apr 2025 20:06:57 +0300
Subject: [PATCH 2/3] add second solution

---
 src/createServer.js | 39 +++++++++++++++++++--------------------
 1 file changed, 19 insertions(+), 20 deletions(-)

diff --git a/src/createServer.js b/src/createServer.js
index 14927fd..affb81c 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -1,7 +1,6 @@
 'use strict';
 
 const http = require('http');
-const { IncomingForm } = require('formidable');
 const fs = require('fs');
 
 function createServer() {
@@ -9,33 +8,32 @@ function createServer() {
   // Return instance of http.Server class
   return http.createServer(async (req, res) => {
     if (req.method === 'POST' && req.url === '/add-expense') {
-      const form = new IncomingForm({ multiples: false });
-
       try {
-        const [fields] = await form.parse(req);
+        let body = '';
 
-        const { date, title, amount } = fields;
+        req.on('data', (chunk) => {
+          body += chunk.toString();
+        });
 
-        if (!date || !title || !amount) {
-          res.writeHead(400, { 'Content-Type': 'text/plain' });
+        req.on('end', () => {
+          const expense = JSON.parse(body);
 
-          return res.end('Missing required fields');
-        }
+          const { date, title, amount } = expense;
 
-        const result = JSON.stringify(fields);
+          if (!date || !title || !amount) {
+            res.writeHead(400);
 
-        // console.log('Fields:', fields);
+            return res.end('Missing required fields');
+          }
 
-        fs.writeFileSync('db/expense.json', result);
+          fs.writeFileSync('db/expense.json', JSON.stringify(expense));
 
-        res.writeHead(200, { 'Content-Type': 'application/json' });
-        res.end(result);
+          const file = fs.readFileSync('db/expense.json');
 
-        // res.end(`<div>
-        //   <h1>Date: ${fields['date']}</h1>
-        //   <h1>Title: ${fields['title']}</h1>
-        //   <h1>Amount: ${fields['amount']}</h1>
-        //   </div`);
+          res.statusCode = 200;
+          res.setHeader('Content-Type', 'application/json');
+          res.end(file);
+        });
       } catch (err) {
         res.writeHead(500);
         res.end('Error parsing form');
@@ -44,7 +42,8 @@ function createServer() {
       res.statusCode = 200;
       res.setHeader('Content-type', 'text/html');
 
-      res.end(`<form method="POST" action="/submit-expense" enctype="multipart/form-data">
+      res.end(`<h1>Input data</h1>
+        <form method="POST" action="/add-expense">
         <input name="date" type="date" required>
         <input name="title" type="text" required>
         <input name="amount" type="number" required>

From 5693472a38d7f8698bab33cd3369a2c7ab5aef94 Mon Sep 17 00:00:00 2001
From: Oleksandr Rad <clavigo365@gmail.com>
Date: Fri, 18 Apr 2025 20:22:56 +0300
Subject: [PATCH 3/3] add third solution

---
 src/createServer.js | 34 +++++++++++++++++++++++++++++-----
 1 file changed, 29 insertions(+), 5 deletions(-)

diff --git a/src/createServer.js b/src/createServer.js
index affb81c..0cebaff 100644
--- a/src/createServer.js
+++ b/src/createServer.js
@@ -16,7 +16,29 @@ function createServer() {
         });
 
         req.on('end', () => {
-          const expense = JSON.parse(body);
+          let expense;
+
+          const contentType = req.headers['content-type'];
+
+          try {
+            if (contentType.includes('application/json')) {
+              expense = JSON.parse(body);
+            } else if (
+              contentType.includes('application/x-www-form-urlencoded')
+            ) {
+              const parsed = new URLSearchParams(body);
+
+              expense = Object.fromEntries(parsed.entries());
+            } else {
+              res.writeHead(415);
+
+              return res.end('Unsupported Content-Type');
+            }
+          } catch (err) {
+            res.writeHead(400);
+
+            return res.end('Invalid body');
+          }
 
           const { date, title, amount } = expense;
 
@@ -28,11 +50,13 @@ function createServer() {
 
           fs.writeFileSync('db/expense.json', JSON.stringify(expense));
 
-          const file = fs.readFileSync('db/expense.json');
+          res.writeHead(200, { 'Content-Type': 'application/json' });
+
+          res.end(JSON.stringify(expense));
 
-          res.statusCode = 200;
-          res.setHeader('Content-Type', 'application/json');
-          res.end(file);
+          // res.end(`<h1>Date: ${date}</h1>
+          //   <h1>Title: ${title}</h1>
+          //   <h1>Amount: ${amount}</h1>`);
         });
       } catch (err) {
         res.writeHead(500);