import type { MediaViewData } from '@/lib/view-data/MediaViewData';

import { ViewModel } from "../contracts/view-models/ViewModel";

type MediaAssetViewData = MediaViewData['assets'][number];

/**
 * Media View Model
 *
 * Client-only ViewModel created from ViewData (never DTO).
 * Represents a single media asset card in the UI.
 */
export class MediaViewModel extends ViewModel {
  id: string;
  src: string;
  title: string;
  category: string;
  date?: string;
  dimensions?: string;

  constructor(viewData: MediaAssetViewData) {
    super();
    this.id = viewData.id;
    this.src = viewData.src;
    this.title = viewData.title;
    this.category = viewData.category;
    if (viewData.date !== undefined) this.date = viewData.date;
    if (viewData.dimensions !== undefined) this.dimensions = viewData.dimensions;
  }

  /** UI-specific: Combined subtitle used by MediaCard */
  get subtitle(): string {
    return `${this.category}${this.dimensions ? ` • ${this.dimensions}` : ''}`;
  }

  /** UI-specific: Whether any metadata is present */
  get hasMetadata(): boolean {
    return !!this.date || !!this.dimensions;
  }
}