public async Task <IList <ConcertDescriptionResponseModel> > GetTrendingConcerts(int userId)
{
var concerts = await _concertRepository.GetAll();
var venues = (await _venueRepository.GetAll()).ToDictionary(x => x.Id);
var myWishlist = (await _wishlistRepository.GetUserWhishlistAsync(userId)).ToDictionary(x => x.ConcertId);
return(concerts.Select(x => new ConcertDescriptionResponseModel
{
Date = x.ConcertDate,
Duration = "TBD",
Id = x.Id,
Name = x.Name,
VenueName = venues[x.Id].VenueName,
AddedToWishlist = myWishlist.ContainsKey(x.Id)
}).ToList());
}