import {Message} from './message';
  
  export class Vessel {
    messages: Array<Message>;

    firstAppearance: number;

  
    constructor(messages: Array<Message>) {
      this.messages = messages;
    }
  
    addMessage(message: Message): void {

      this.messages.push(message);
      this.determineFirstAppearance(message);

    }
  
    getMMSI(): string {

      if (this.messages.length === 0) {

        return undefined;

      }

      return this.messages[0].mmsi;
    }
  
    getName(): string {
      return this.messages[0].vesselName;
    }

    public getColor(): string {

      return '#' + (+this.getMMSI()).toString(16).substr(0, 6);

    }

    determineFirstAppearance(message: Message): void {
      const timeInS = Date.parse(message.time) / 1000;

      if (this.firstAppearance === undefined || this.firstAppearance > timeInS) {

        this.firstAppearance = timeInS;
      }
    }

  }