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server.js
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server.js
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const express = require("express");
const { MongoClient, ServerApiVersion } = require('mongodb');
const bodyParser = require("body-parser");
const path = require("path");
const bcrypt = require('bcrypt');
const session = require('express-session');
require("dotenv").config();
const app = express();
app.set('view engine', 'ejs');
const PORT = process.env.SERVER_PORT;
const SERVER_IP = process.env.SERVER_IP;
const dbName = process.env.DATABASE_NAME;
const saltRounds = 10;
// // Configure database
async function connectToDB() {
//const client = new MongoClient(url, { useNewUrlParser: true, useUnifiedTopology: true });
const uri = `mongodb+srv://${process.env.MONGODB_USER}:${process.env.MONGODB_PASSWORD}@${process.env.MONGODB_URL}/?retryWrites=true&w=majority`;
// Create a MongoClient with a MongoClientOptions object to set the Stable API version
const client = new MongoClient(uri, {
serverApi: {
version: ServerApiVersion.v1,
strict: true,
deprecationErrors: true,
},
});
return await client.connect();
}
app.use(bodyParser.urlencoded({ extended: true }));
app.use(session({secret: `${process.env.MONGODB_URL}+${process.env.MONGODB_PASSWORD}`, // hashes the string for unique session ID, should change periodically (look up secret rotation)
saveUninitialized: false, // session isn't created until something is stored
resave: false})); // session isn't saved if no changes
app.post("/message", async (req, res) => {
let client;
try {
client = await connectToDB();
const db = client.db(dbName);
const sender = req.body.sender;
const subject = req.body.subject;
const body = req.body.body;
const timestamp = new Date();
await db
.collection("Messages")
.insertOne({ sender, subject, body, timestamp });
res.redirect("/");
} catch (error) {
console.error("Error:", error);
res.status(500).send("Internal Server Error");
} finally {
if (client) {
await client.close();
}
}
});
app.get("/message", async (req, res) => {
let client;
try {
client = await connectToDB();
const db = client.db(dbName);
// Fetch messages from the Messages collection
const messages = await db.collection("Messages").find().toArray();
// Send messages as JSON response
res.json(messages);
} catch (error) {
console.error("Error:", error);
res.status(500).json({ error: "Internal Server Error" });
} finally {
if (client) {
await client.close();
}
}
});
app.get('/logout', async (req, res) => {
if (req.session) {
req.session.destroy(err => {
if (err) {
res.status(400).send('Unable to log out');
} else {
res.redirect('/');
}
});
} else {
res.end();
}
});
app.post('/register', async (req, res) => {
let client;
try {
client = await connectToDB();
const db = client.db(dbName);
var username = req.body.username;
const timestamp = new Date();
const salt = await bcrypt.genSalt(saltRounds);
let password = await bcrypt.hash(req.body.password, salt);
let existingUser = await db.collection("UserAccounts").findOne({username: req.body.username});
if (existingUser) { throw "duplicateUsers"}
await db.collection('UserAccounts').insertOne({ username, password, timestamp });
req.session.userStartDate = timestamp;
req.session.username = username;
res.redirect('/');
} catch (err) {
res.redirect('/signup.html?error=' + encodeURIComponent(err));
} finally {
if (client) {
await client.close();
}
}
}
);
app.post('/login', async (req, res) => {
let client;
try {
client = await connectToDB();
const db = client.db(dbName);
let user = await db.collection("UserAccounts").findOne({username: req.body.username});
if (!user) { throw "badlogin" }
let match = await bcrypt.compare(req.body.password, user.password);
if (!match) {throw "badlogin"; }
req.session.userStartDate = user.timestamp;
req.session.username = user.username;
res.redirect("/");
} catch (err) {
res.redirect('/signup.html?error=' + encodeURIComponent(err));
} finally {
if (client) {
await client.close();
}
}
}
);
// Serve static files
app.use(express.static("public"));
// Disable strict MIME checking globally
app.use((req, res, next) => {
res.setHeader("X-Content-Type-Options", "nosniff");
next();
});
// Serve index.html using a relative path
app.get("/", (req, res) => {
res.render('index', {username: req.session.username, userStartDate: req.session.userStartDate});
});
app.listen(PORT, () => {
console.log(`Server is running on http://${SERVER_IP}:${PORT}`);
});
/*
app.listen(PORT, 'localhost', () => {
console.log(`Server is running on http://localhost:${PORT}`);
}); */