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server.js
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server.js
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var express = require('express'); // for server libraies. listening on port etc...
var morgan = require('morgan'); // For log output
var path = require('path'); // Libraries
var crypto = require('crypto');
var bodyParser = require('body-parser');
var Pool = require('pg').Pool;
var app = express();
app.use(morgan('combined'));
app.use(bodyParser.json());
var config = {
user: 'muralimohan1',
database: 'muralimohan1',
host: 'db.imad.hasura.io',
port: '5432',
password: process.env.DB_PASSWORD
};
var pool = new Pool(config);
var articles = {
'article-one': {
title: 'Article One | Mohan',
heading: 'Article One',
date: '19 Sep 2017',
content: ` <p>
This s the content for my first article. This s the content for my first article. This s the content for my first article. This s the content for my first article. This s the content for my first article.
</p>
<p>
This s the content for my first article. This s the content for my first article. This s the content for my first article. This s the content for my first article. This s the content for my first article.
</p>
<p>
This s the content for my first article. This s the content for my first article. This s the content for my first article. This s the content for my first article. This s the content for my first article.
</p>`
},
'article-two': {
title: 'Article Two | Mohan',
heading: 'Article Two',
date: '19 Sep 2017',
content: ` <p>
This s the content for my Second article.
</p>
<p>
This s the content for my Second article.
</p>
<p>
This s the content for my Second article.
</p>`
},
'article-three': {
title: 'Article Three | Mohan',
heading: 'Article Three',
date: '19 Sep 2017',
content: ` <p>
This s the content for my Third article.
</p>
<p>
This s the content for my Third article.
</p>
<p>
This s the content for my Third article.
</p>`
}
};
function createTemplate (data) {
var title = data.title;
var date = data.date;
var heading = data.heading;
var content= data.content;
var htmlTemplate = `
<html>
<head>
<title>
${title}
</title>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link href="/ui/style.css" rel="stylesheet" />
</head>
<body>
<div class="container">
<div>
<a href="/">Home</a>
</div>
<hr/>
<h3>
${heading}
</h3>
<div>
${date}
</div>
<div>
${content}
</div>
</div>
</body>
</html>
`;
return htmlTemplate;
}
var counter = 0;
app.get('/counter', function (req, res) {
counter = counter + 1;
res.send(counter.toString());
});
app.get('/', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'index.html'));
});
app.get('/:articleName', function(req, res) {
var articleName = req.params.articleName;
res.send(createTemplate(articles[articleName]));
});
app.get('/ui/style.css', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'style.css'));
});
app.get('/ui/main.js', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'main.js'));
});
app.get('/ui/madi.png', function (req, res) {
res.sendFile(path.join(__dirname, 'ui', 'madi.png'));
});
function hash (input, salt) {
// how do we create a hash
var hashed = crypto.pbkdf2Sync(input, salt, 10000, 512, 'sha512');
return ["pbkdf2", "10000", "sha512", salt, hashed.toString('hex')].join('$');
}
app.get('/hash/:input', function (req, res) {
var hashedString = hash(req.params.input, 'this-is-some-random-string-by-mohan');
res.send(hashedString);
});
app.post('/create-user', function (req, res){
var username=req.body.username;
var password=req.body.password;
var salt = crypto.randomBytes(128).toString('hex');
var dbString = hash(password, salt);
pool.query('INSERT INTO "user" (username, password) VALUES ($1, $2)', [username, dbString], function (err, result) {
if (err) {
res.status(500).send(err.toString());
} else {
res.send('User successfully created: ' + username);
}
});
});
// Do not change port, otherwise your app won't run on IMAD servers
// Use 8080 only for local development if you already have apache running on 80
var port = 80;
app.listen(port, function () {
console.log(`IMAD course app listening on port ${port}!`);
});