workadventure/back/src/Controller/IoSocketController.ts

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import socketIO = require('socket.io');
import {Socket} from "socket.io";
import * as http from "http";
import {MessageUserPosition} from "@Model/Websocket/MessageUserPosition";
import {ExSocketInterface} from "@Model/Websocket/ExSocketInterface";
import Jwt, {JsonWebTokenError} from "jsonwebtoken";
const SECRET_KEY = process.env.SECRET_KEY || "THECODINGMACHINE_SECRET_KEY";
export class IoSocketController{
Io: socketIO.Server;
constructor(server : http.Server) {
this.Io = socketIO(server);
//authentication with token. it will be decodes and stock in socket.
this.Io.use( (socket: Socket, next) => {
if (!socket.handshake.query || !socket.handshake.query.token) {
return next(new Error('Authentication error'));
}
Jwt.verify(socket.handshake.query.token, SECRET_KEY, (err: JsonWebTokenError, tokenDecoded: object) => {
if (err) {
return next(new Error('Authentication error'));
}
(socket as ExSocketInterface).token = tokenDecoded;
next();
});
});
this.ioConnection();
}
ioConnection() {
this.Io.on('connection', (socket: Socket) => {
/*join-rom event permit to join one room.
message :
userId : user identification
roomId: room identification
positionXUser: user x position map
positionYUser: user y position on map
*/
socket.on('join-room', (message : MessageUserPosition) => {
socket.join(message.roomId);
// sending to all clients in room except sender
socket.to(message.roomId).emit('join-room', message.toString());
});
socket.on('user-position', (message : MessageUserPosition) => {
// sending to all clients in room except sender
socket.to(message.roomId).emit('join-room', message.toString());
});
});
}
}