public void Upvote(int memeId, User user)
{
Meme meme = _context.Memes.Find(memeId);
if (meme == null)
{
throw new AppException($"Nie ma mema o takim Id. Metoda: {nameof(Upvote)}");
}
MemeRate rate = _context.MemeRates.FirstOrDefault(x => x.Meme == meme && x.User == user);
if (rate == null)
{
rate = CreateMemeRate(meme, user);
rate.isUpvote = true;
_context.MemeRates.Update(rate);
}
else if (!rate.isUpvote)
{
rate.isUpvote = true;
_context.MemeRates.Update(rate);
}
else if (rate.isUpvote)
{
_context.MemeRates.Remove(rate);
}
_context.SaveChanges();
}
//helpers
private MemeRate CreateMemeRate(Meme meme, User user)
{
MemeRate newLike = new MemeRate();
newLike.Meme = meme;
newLike.User = user;
_context.MemeRates.Add(newLike);
_context.SaveChanges();
return(newLike);
}
