export class UrlParamSortService {

  private defaultSort: string[];

  public constructor(sort: string[]) {
    this.defaultSort = sort;
  }

  public urlEncode(sort?: string[]): {sort: string|string[]} {
    const sortings: string[] = sort || this.defaultSort;
    const encodedSortings: string[] = [];
    sortings.forEach((value: string, index: number) => encodedSortings[index] = encodeURIComponent(value));

    if (sort && sort.length > 1) {
      return { sort: encodedSortings };
    }

    return {
      sort: encodedSortings[0] || '',
    };
  }
}