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messageServer.js
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messageServer.js
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require('dotenv').config();
const app = require('express')();
const http = require('http').createServer(app);
const jwt = require('jsonwebtoken');
const io = require('socket.io')(http, {
path: '/socket',
});
const db = require('./db');
const PORT = 4002;
const getAllMessages = async () =>
db
.select('message_id', 'message', 'username', 'messages.created_at')
.table('messages')
.leftJoin('users', function () {
this.on('messages.user_id', '=', 'users.user_id');
});
io.use((socket, next) => {
if (socket?.handshake?.query?.accessToken) {
const token = socket.handshake.query.accessToken;
jwt.verify(token, process.env.ACCESS_TOKEN_SECRET, (err, decoded) => {
if (err) {
next(new Error('Authentication error'));
} else {
// eslint-disable-next-line no-param-reassign
socket.decoded = decoded;
next();
}
});
} else {
next(new Error('Authentication error'));
}
}).on('connection', async socket => {
const { userId } = socket.decoded;
socket.on('get-messages', async () => {
const allMessages = await getAllMessages();
io.emit('get-messages', allMessages);
});
socket.on('new-message', async message => {
await db('messages').insert({
message,
user_id: userId,
});
const allMessages = await getAllMessages();
io.emit('get-messages', allMessages);
});
socket.on('delete-message', async messageId => {
await db('messages').where('message_id', messageId).del();
const allMessages = await getAllMessages();
io.emit('get-messages', allMessages);
});
socket.on('disconnect', () => {
console.log('user disconnected');
});
});
http.listen(PORT, () => {
console.log(`listening on ${PORT}`);
});