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task11.js
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const fs = require('fs');
const requestHandler = ((req, res) => {
const url = req.url;
const method = req.method;
if (url === '/') {
fs.readFile('message.text', { encoding: 'utf-8' }, (err, data) => {
if (err) {
console.log(err);
}
res.setHeader('Content-Type', 'text/html');
res.write('<html>');
res.write('<head><title>Enter Message</title></head>');
res.write('<body>');
res.write('<h3>' + data + '</h3>');
res.write('<form action = "/message" method ="POST"><input type ="text" name = "message"><button type = "submit">Send</button></form>')
res.write('</body>');
res.write('</html>');
return res.end();
})
}
else if (url === '/message' && method === 'POST') {
const body = [];
req.on('data', (chunk) => {
console.log(chunk);
body.push(chunk);
});
req.on('end', () => {
const parseBody = Buffer.concat(body).toString();
const message = parseBody.split('=')[1];
fs.writeFileSync('message.text', message);
res.statusCode = 302;
res.setHeader('Location', '/');
return res.end();
});
}
else {
res.setHeader('Content-Type', 'text/html');
res.write('<html>');
res.write('<head><title> My First Page</title></head>');
res.write('<body><h1> My First Page</h1></body>');
res.write('</html>');
res.end();
}
})
exports.handler = requestHandler;
exports.someText = 'Dummy';