import {Vessel} from './vessel';
  import {Message} from './message';
  
  export class Vessels {
    vessels: Map<number, Vessel>;

    firstAppearance: number;

  
    constructor() {
      this.vessels = new Map<number, Vessel>();
    }
  
    addMessage(message: Message): void {
      if (!this.vessels.get(Number(message.mmsi))) {
        this.vessels.set(Number(message.mmsi), new Vessel(new Array<Message>()));
      }

      this.determineFirstAppearance(message);

      this.vessels.get(Number(message.mmsi)).addMessage(message);
    }

    determineFirstAppearance(message: Message): void {
      const timeInS = Date.parse(message.time) / 1000;
      if (this.firstAppearance > timeInS) {
        this.firstAppearance = timeInS;
      }
    }

  }