centurion/backend/src/User.ts

import {Socket} from "socket.io";

import Room from "./Room";
import {getTimelineNames} from "./timeline";

export default class User {
    socket: Socket;
    id: string;

    room: Room | null = null;
    readyToParticipate: boolean = false;

    constructor(socket: Socket) {
        this.socket = socket;
        this.id = socket.id;
    }

    onDisconnect() {
        if (this.room != null) {

        }
    }

    setRoom(room: Room | null) {
        if (this.room === room) return;

        if (this.room != null) {
            this.socket.leave(this.room.id.toString());
            this.readyToParticipate = false;
        }

        this.room = room;

        if (this.room != null) {
            this.socket.join(this.room.id.toString());
        }

        this.sync();
    }

    getConfig() {
        return {
            'availableTimelines': getTimelineNames()
        }
    }

    sentConfig: any = null;
    sentRoom: any = null;
    sentTimelineName: string | null = null;

    sync() {
        // Config
        let config = this.getConfig();
        if (!this.syncEquals(this.sentConfig, config)) {
            this.sentConfig = config;
            this.emit('config', {
                'config': this.sentConfig
            });
        }

        // Room
        if (!this.syncEquals(this.sentRoom, this.room?.serialize(this))) {
            this.sentRoom = this.room?.serialize(this);
            this.emit('room', {
                'room': this.sentRoom
            })
        }

        // Timeline
        if (!this.syncEquals(this.sentTimelineName, this.room?.timelineName)) {
            this.sentTimelineName = this.room?.timelineName || null;
            this.emit('timeline', {
                'timeline': this.sentTimelineName == null ? null : this.room!!.serializeTimeline(this)
            })
        }
    }

    emit(eventName: string, obj: any) {
        this.socket.emit(eventName, obj);
    }

    syncEquals(obj1: any, obj2: any): boolean {
        if (obj1 === undefined && obj2 === undefined)
            return true;

        if ((obj1 === undefined && obj2 !== undefined) || (obj1 !== undefined && obj2 === undefined))
            return false;

        if (obj1 === null && obj2 === null)
            return true;

        if ((obj1 === null && obj2 !== null) || (obj1 !== null && obj2 === null))
            return false;

        if (typeof (obj1) !== typeof (obj2))
            return false;

        if (typeof (obj1) === 'string' || typeof (obj1) === 'number' || typeof (obj1) === 'boolean') {
            return obj1 === obj2;
        }

        if (Object.keys(obj1).length !== Object.keys(obj2).length) return false

        return Object.keys(obj1).every(key =>
            obj2.hasOwnProperty(key) && this.syncEquals(obj1[key], obj2[key])
        );
    }
}