public async Task <Character> CreateAsync(ICreateCharacterModel createModel)
{
List <Episode> episodes = await _episodeRepository.GetAllByOrDefaultAsync(x => createModel.Episodes.Contains(x.Name));
List <Character> friends = await _characterRepository.GetAllByOrDefaultAsync(x => createModel.Friends.Contains(x.Name));
return(new Character()
{
Name = createModel.Name,
Friends = friends.Select(x => new CharacterFriend()
{
FriendCharacterId = x.Id
}).ToList(),
Episodes = episodes.Select(x => new CharacterEpisode()
{
EpisodeId = x.Id
}).ToList()
});
}
private async Task SetCharacterFriendsAsync(Character characterToUpdate, List <string> friends)
{
List <Character> friendsToAssign = await _characterRepository.GetAllByOrDefaultAsync(x => friends.Contains(x.Name));
HashSet <int> friendsToAssignIds = friendsToAssign.Select(x => x.Id).ToHashSet();
List <CharacterFriend>?friendsToRemove
= characterToUpdate.Friends.Where(x => !friendsToAssignIds.Contains(x.FriendCharacterId)).ToList();
List <CharacterFriend>?friendsToAdd = friendsToAssignIds.Where(x => !characterToUpdate.Episodes.Any(y => y.EpisodeId == x))
.Select(friendId => new CharacterFriend()
{
CharacterId = characterToUpdate.Id,
FriendCharacterId = friendId
}).ToList();
friendsToRemove.ForEach(x => characterToUpdate.Friends.Remove(x));
friendsToAdd.ForEach(x => characterToUpdate.Friends.Add(x));
}