public async Task <bool> TryUnboxWaifus(ulong userid, List <Waifu> waifus, uint boxCost)
{
return(await _soraTransactor.TryDoInTransactionAsync(async context =>
{
var user = await context.Users.FindAsync(userid).ConfigureAwait(false);
if (user == null)
{
return false;
}
// check if enough money
if (user.Coins < boxCost)
{
return false;
}
// Remove money
user.Coins -= boxCost;
// Give waifus
foreach (var waifu in waifus)
{
var userWaifu = user.UserWaifus.FirstOrDefault(x => x.WaifuId == waifu.Id);
if (userWaifu != null)
{
userWaifu.Count++;
continue;
}
// otherwise we have to add it
userWaifu = new UserWaifu(userid, waifu.Id, 1);
user.UserWaifus.Add(userWaifu);
}
await context.SaveChangesAsync().ConfigureAwait(false);
return true;
}).ConfigureAwait(false));
}
private bool RemoveWaifuFromUser(User userdb, UserWaifu waifu)
{
userdb.UserWaifus.Remove(waifu);
if (waifu.WaifuId != userdb.FavoriteWaifu)
{
return(false);
}
userdb.FavoriteWaifu = -1;
return(true);
}
