bank-client-js/src/content-item.ts

import { ContentLink } from "./content-link";
import { ContentParams } from "./content-params";

export class ContentItem {

  public readonly data: ContentParams;
  public readonly hash: string;
  public readonly type: string;
  
  public readonly myTagsWithoutAll: string[];
  public readonly allLinks: ContentLink[];
  public readonly userLinks: ContentLink[];
  public readonly systemLinks: ContentLink[];
  public readonly repliable: boolean;

  public readonly title?: string;
  public readonly text?: string;
  public readonly price?: number;
  public readonly priceFormatted?: string;
  public readonly fromTarget?: string;
  public readonly toTarget?: string;
  public readonly fromContactId?: string;
  public readonly toContactId?: string;
  public readonly media?: string;
  
  constructor(hash: string, props: ContentParams) {
    this.data = props;
    this.hash = hash;
    this.type = props.type;
    this.title = props.title;
    this.text = props.text;
    
    if (props.myTags) {
      this.myTagsWithoutAll = props.myTags.filter(x => x !== 'all');
    } else {
      this.myTagsWithoutAll = [];
    }
    if (props.price != null && !isNaN(Number(props.price))) {
      this.price = Number(props.price);
      this.priceFormatted = this.formatCents(this.price);
    }
    this.allLinks = props.links || [];
    this.userLinks = this.allLinks.filter(x => !x.rel.startsWith('.'));
    this.systemLinks = this.allLinks.filter(x => x.rel.startsWith('.'));

    this.fromTarget = this.allLinks.filter(x => x.rel === '.from').map(x => x.target)[0];
    this.toTarget = this.allLinks.filter(x => x.rel === '.to').map(x => x.target)[0];
    this.fromContactId = this.allLinks.filter(x => x.rel === '.from-contact-id').map(x => x.target)[0];
    this.toContactId = this.allLinks.filter(x => x.rel === '.to-contact-id').map(x => x.target)[0];
    this.media = this.allLinks.filter(x => x.rel === '.media').map(x => x.target)[0];
    if (this.fromTarget && this.toTarget && this.media) {
      this.repliable = true;
    } else {
      this.repliable = false;
    }
  }

  private formatCents(price: number) {
    if (price == null || price === 0) {
      return 'free';
    }
    let dollars = `${price / 100}`;
    if (dollars.match(/\..$/)) {
      dollars += '0';
    }
    return '$' + dollars;
  }

}