smartuniverse/ts/smartuniverse.classes.universemessage.ts

import * as plugins from './smartuniverse.plugins';
import * as interfaces from './interfaces';

import { Objectmap } from '@pushrocks/lik';

import { Timer, TimeStamp } from '@pushrocks/smarttime';
import { Universe } from './smartuniverse.classes.universe';
import { UniverseChannel } from './smartuniverse.classes.universechannel';
import { UniverseCache } from './smartuniverse.classes.universecache';
import { IUniverseMessage } from './interfaces';

/**
 * represents a message within a universe
 * acts as a container to save message states like authentication status
 */
export class UniverseMessage implements interfaces.IUniverseMessage {
  public static createMessageFromPayload(dataArg: interfaces.IUniverseMessage) {
    return new UniverseMessage(dataArg);
  }

  public id: string;

  public timestamp: number;
  public smartTimestamp: TimeStamp;

  public messageText: string;
  public passphrase: string;
  public payload: any;
  public payloadStringType;
  public targetChannelName: string;

  /**
   * the UniverseCache the message is attached to
   */
  public universeCache: UniverseCache;

  /**
   * enables unprotected grouping of messages for efficiency purposes.
   */
  public universeChannelList = new Objectmap<UniverseChannel>();

  /**
   * wether the message is authenticated
   */
  public authenticated: boolean = null;

  /**
   * a destruction timer for this message
   */
  public destructionTimer: Timer; // a timer to take care of message destruction

  /**
   * the constructor to create a universe message
   * @param messageArg
   * @param attachedPayloadArg
   */
  constructor(messageDescriptor: IUniverseMessage) {
    this.smartTimestamp = new TimeStamp(this.timestamp);
    this.messageText = messageDescriptor.messageText;
    this.targetChannelName = messageDescriptor.targetChannelName;
    this.passphrase = messageDescriptor.passphrase;
    this.payload = messageDescriptor.payload;
    // prevent memory issues
    this.fallBackDestruction();
  }

  public setUniverseCache(universeCacheArg: UniverseCache) {
    this.universeCache = universeCacheArg;
  }

  public setDestructionTimer(selfdestructAfterArg: number) {
    if (selfdestructAfterArg) {
      this.destructionTimer = new Timer(selfdestructAfterArg);
      this.destructionTimer.start();

      // set up self destruction by removing this from the parent messageCache
      this.destructionTimer.completed.then(async () => {
        this.universeCache.messageMap.remove(this);
      });
    } else {
      this.fallBackDestruction();
    }
  }

  /**
   * handles bad messages for further analysis
   */
  public handleAsBadMessage() {
    console.log('received a bad message');
  }

  /**
   * prevents memory leaks if channels have no default
   */
  private fallBackDestruction() {
    plugins.smartdelay.delayFor(1000).then(() => {
      if (!this.destructionTimer) {
        this.setDestructionTimer(6000);
      }
    });
  }
}