import Recommendation from '~/Contracts/Recommendation';
import Response from '~/Contracts/ClientResponse';

import Guard from '~/Guards/Guard';

class InvalidateProductsGuard extends Guard {
  /**
   *
   *
   * @param  {object} response
   * @return {boolean}
   */
  public check(response: Response): boolean {
    return this.validate(<Recommendation>response.data);
  }

  /**
   *
   * 
   * @param  {Recommendation} recommendation
   * @return {boolean}
   */
  private validate(recommendation: Recommendation) {
    return recommendation.products.every(({ code }) => !! this.products[code]);
  }

  /**
   *
   *
   * @param  {Recommendation} recommendation
   * @return {Trending | null}
   */
  public contingency(recommendation: Recommendation) {
    const trending = this.storage.get();

    const badProducts = recommendation.products.filter(({ code }) => ! this.products[code]);

    console.error('TrendingService - Invalidate product(s) found in payload.', badProducts, recommendation);
    
    if (! trending) {
      console.warn('TrendingService - No previous trending data available in local-storage.');
    }

    return trending;
  }

  /**
   *
   *
   * @return {boolean}
   */
  public retry() {
    return false;
  }
}

export default InvalidateProductsGuard;