import { isValidNumber } from '../utils/index';
import { IBoundingBox } from './BoundingBox';
import { Box } from './Box';
import { IRect } from './Rect';

export class LabeledBox extends Box {
  public static assertIsValidLabeledBox(box: any, callee: string) {
    Box.assertIsValidBox(box, callee);
    if (!isValidNumber(box.label)) {
      throw new Error(`${callee} - expected property label (${box.label}) to be a number`);
    }
  }

  private _label: number;

  constructor(box: IBoundingBox | IRect | any, label: number) {
    super(box);
    this._label = label;
  }

  public get label(): number { return this._label; }
}