backend

package.json

@@ -0,0 +1,20 @@
+{
+  "name": "backend",
+  "version": "1.0.0",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "body-parser": "^1.20.3",
+    "cors": "^2.8.5",
+    "dotenv": "^16.4.5",
+    "express": "^4.20.0",
+    "express-session": "^1.18.0",
+    "socket.io": "^4.7.5"
+  }
+}

server.js

@@ -0,0 +1,139 @@
+const express = require('express');
+const http = require('http');
+const socketIo = require('socket.io');
+const cors = require('cors');
+const session = require('express-session');
+const app = express();
+const server = http.createServer(app);
+const io = socketIo(server, {
+    cors: {
+        origin: "http://localhost:5173",
+        methods: ["GET", "POST"],
+        credentials: true
+    }
+});
+
+app.use(cors({
+    origin: "http://localhost:5173",
+    methods: ["GET", "POST"],
+    credentials: true
+}));
+app.use(express.json());
+app.use(session({
+    secret: 'your-secret-key',
+    resave: false,
+    saveUninitialized: false,
+    cookie: { secure: false }
+}));
+
+let users = {};
+let admins = {};
+let messages = [];
+
+app.post('/register', (req, res) => {
+    const { id, name } = req.body;
+    if (!id || !name) {
+        return res.status(400).json({ error: 'ID and Name are required' });
+    }
+    users[id] = { id, name };
+    res.status(200).json(users);
+});
+
+app.get('/users', (req, res) => {
+    res.status(200).json(users);
+});
+
+app.post('/registerAdmin', (req, res) => {
+    const { name, password } = req.body;
+    if (!name || !password) {
+        return res.status(400).json({ error: 'Name and Password are required' });
+    }
+    if (admins[name]) {
+        return res.status(400).json({ error: 'Admin already exists' });
+    }
+    admins[name] = { password };
+    res.status(200).json({ message: 'Admin successfully registered' });
+});
+
+app.post('/loginAdmin', (req, res) => {
+    const { name, password } = req.body;
+    if (!name || !password) {
+        return res.status(400).json({ error: 'Name and Password are required' });
+    }
+    if (!admins[name] || admins[name].password !== password) {
+        return res.status(400).json({ error: 'Invalid credentials' });
+    }
+    req.session.user = { name };
+    res.status(200).json({ message: 'Login successful' });
+});
+
+app.post('/logoutAdmin', (req, res) => {
+    req.session.destroy(err => {
+        if (err) {
+            return res.status(500).json({ error: 'Logout failed' });
+        }
+        res.status(200).json({ message: 'Logout successful' });
+    });
+});
+
+const checkAuth = (req, res, next) => {
+    if (!req.session.user) {
+        return res.status(401).json({ error: 'Not authenticated' });
+    }
+    next();
+};
+
+app.post('/sendMessage', checkAuth, (req, res) => {
+    const { content, recipient } = req.body;
+    if (!content || !recipient) {
+        return res.status(400).json({ error: 'Content and Recipient are required' });
+    }
+    const message = { content, sender: req.session.user.name, recipient };
+    messages.push(message);
+    io.emit('receiveMessage', message);
+    res.status(200).json(message);
+});
+
+app.post('/endConversation', checkAuth, (req, res) => {
+    const { recipient } = req.body;
+    if (!recipient) {
+        return res.status(400).json({ error: 'Recipient is required' });
+    }
+    messages = messages.filter(msg => msg.recipient !== recipient);
+    io.emit('receiveMessage', { type: 'conversationEnded', recipient });
+    res.status(200).json({ message: 'Conversation ended' });
+});
+
+app.post('/deleteUser', checkAuth, (req, res) => {
+    const { id } = req.body;
+    if (!id) {
+        return res.status(400).json({ error: 'User ID is required' });
+    }
+    delete users[id];
+    messages = messages.filter(msg => msg.recipient !== id);
+    io.emit('updateUsers', Object.values(users));
+    io.emit('receiveMessage', { type: 'userDeleted', id });
+    res.status(200).json({ message: 'User successfully deleted' });
+});
+
+io.on('connection', (socket) => {
+    console.log('User connected');
+
+    socket.on('sendMessage', (message) => {
+        io.emit('receiveMessage', message);
+    });
+
+    socket.on('endConversation', (data) => {
+        const { recipient } = data;
+        messages = messages.filter(msg => msg.recipient !== recipient);
+        io.emit('receiveMessage', { type: 'conversationEnded', recipient });
+    });
+
+    socket.on('disconnect', () => {
+        console.log('User disconnected');
+    });
+});
+
+server.listen(3001, () => {
+    console.log('Server running on port 3001');
+});