nope/lib/communication/layers/IoSocketClient.ts

/**
 * @author Martin Karkowski
 * @email m.karkowski@zema.de
 * @create date 2020-11-04 17:36:04
 * @modify date 2021-03-19 14:35:58
 * @desc [description]
 */

import * as io from "socket.io";
import { connect } from "socket.io-client";
import { generateId } from "../../helpers/idMethods";
import { LoggerLevel } from "../../logger/nopeLogger";
import { ICommunicationInterface } from "../../types/nope/nopeCommunication.interface";
import { Bridge } from "../bridge";
import { EventLayer } from "./eventLayer";

/**
 * Communication Layer using IO-Sockets.
 *
 * @export
 * @class IoSocketServer
 * @implements {ICommunicationInterface}
 */
//@ts-ignore Ignore the Interface. Its implemented manually
export class IoSocketClient extends Bridge implements ICommunicationInterface {
  protected _socket: io.Server;
  protected _sockets: Set<io.Socket>;

  /**
   * Creates an instance of IoSocketClient.
   * @param {string} uri Uri of the Server.
   * @param {LoggerLevel} [level="info"] Logger level
   * @memberof IoSocketClient
   */
  constructor(public uri: string, level: LoggerLevel = "info") {
    super(generateId(), "io-socket-client " + uri, level);

    // Make shure we use the http before connecting.
    this.uri = this.uri.startsWith("http://") ? this.uri : "http://" + this.uri;

    const _this = this;

    this.connected.getter = (value) => value;
    this.connected.setContent(false);

    this._logger.info("connecting to: " + uri);

    // 1. Create the Socket.
    const socket = connect(uri);
    // 2. Create the Layer. Based on the Mode it will be either an Mirror or Default Layer.
    const layer = new EventLayer(socket as any, this._logger);
    // 3. Add the Layer
    this.addLayer(layer, true, true);

    socket.on("connect", (...args) => {
      // Assign new ID.
      (_this._logger as any).context.name += "_" + socket.id;

      // Element is connected
      _this._logger.info("connected");

      _this.connected.setContent(true);
    });

    socket.on("disconnect", () => {
      // Connection Lost.
      _this._logger.error("Connection lost!");
      _this.connected.setContent(false);
    });
  }
}