import { createSocket, Socket } from 'dgram';
import { Logger } from "winston";
import { CommunicationEvents, ICommunicationInterface } from "../dispatcher/nopeDispatcher";
import { getLogger } from "../logger/getLogger";

export class UdpSocket implements ICommunicationInterface {

    protected _socket: Socket
    protected _funcs: Set<(...args: any[]) => void>;
    protected _logger: Logger;

    constructor(public port: number) {
        this._logger = getLogger('info', 'UDP-Socket');
        this._socket = createSocket('udp4')
        this._socket.bind(port);

        const _this = this;
        this._socket.on('message', (rawData) => {
            try {
                _this._logger.debug('New Data received');
                // Parse the Data:
                const data = JSON.parse(rawData.toString('utf-8'));
                // Forward the Message
                for (const _func of _this._funcs) {
                    _func(data)
                }
            } catch (error) {
                _this._logger.error('Error during receiving data');
                _this._logger.error(error)
            }
        });

        this._socket.on('connect', () => {

        })

        this._funcs = new Set<(...args: any[]) => void>();
    }

    on(events: CommunicationEvents, cb: (...args: any[]) => void) {
        this._funcs.add(cb);
    }

    send(data: any): void {
        this._logger.debug('sending', data);
        this._socket.send(JSON.stringify(data));
    }
}