public void OnGet(int beerId)
{
//passed a beer id
string userId = User.FindFirst(ClaimTypes.NameIdentifier).Value;
friendsList = new List <friends>();
selectedBeer = _beerRepository.getBeerById(beerId);
//do YOU need it -> is the beer id in getUserCollection?
//https://stackoverflow.com/questions/1071032/searching-if-value-exists-in-a-list-of-objects-using-linq
haveIHadTheBeer = _beerCollectionRepository.getUserCollection(userId).Any(beer => beer.beer_id == beerId);
//do your friends need it? GetFriends (list of friends)
friendsList = _friendRepository.GetFriends(userId);
Results = new List <friends>();
foreach (var friend in friendsList)
{
bool haveTheyHadTheBeer = _beerCollectionRepository.getUserCollection(friend.friend_id).Any(beer => beer.unique_id == selectedBeer.unique_id);
if (!haveTheyHadTheBeer)
{
Results.Add(friend);
}
}
//for each friend check collectionViewModel to see if the unique beer id is present.
// one method in this page model, to call the service which will do this work and return... list of friends who need it.
}
public List <beersViewModel> getUserCollection(string userId)
{
return(_beerCollectionRepository.getUserCollection(userId));
}