import {
  Favorite,
  FavoritesFilters,
  FavoritesFiltersSortByOptions,
} from '../redux-types/favorites.redux-types';

export const getFilteredData = (
  data: Favorite[],
  filters: FavoritesFilters,
): Favorite[] => {
  const { category, instrument, sortBy, type } = filters;
  return data
    .filter(favorite => (category ? favorite.category === category : true))
    .filter(
      favorite =>
        instrument ? favorite.instrument.includes(instrument) : true,
    )
    .filter(favorite => (type ? favorite.type === type : true))
    .sort(
      (a, b): number => {
        switch (sortBy) {
          case FavoritesFiltersSortByOptions.RECENT:
            return new Date(a.dateAdded) > new Date(b.dateAdded) ? -1 : 1;
          case FavoritesFiltersSortByOptions.ALPHABETICAL:
            return b.title > a.title ? -1 : 1;
          case FavoritesFiltersSortByOptions.REVERSE_ALPHABETICAL:
            return a.title > b.title ? -1 : 1;
          default:
            return 0;
        }
      },
    );
};