public async Task RemoveCoinAsync(Guid userId, TypeCoin typeCoin)
{
var purse = await FirstOrDefaultAsync(x => x.ApplicationUserId == userId,
include : sourse => sourse.Include(m => m.PurseCoins));
PurseCoin findCoins = purse.PurseCoins.FirstOrDefault(x => x.TypeCoin == typeCoin);
if (findCoins == null || findCoins.Count == 0)
{
throw new ApplicationException("This coin is not found");
}
findCoins.Count--;
await Update(purse);
}
public async Task AddCoinsAsync(Guid userId, IEnumerable <Coin> coins)
{
var purse = await FirstOrDefaultAsync(x => x.ApplicationUserId == userId,
include : sourse => sourse.Include(m => m.PurseCoins));
foreach (var coinsGroup in coins.GroupBy(x => x.TypeCoin))
{
var findCoin = purse.PurseCoins.FirstOrDefault(x => x.TypeCoin == coinsGroup.Key);
if (findCoin == null)
{
findCoin = new PurseCoin
{
TypeCoin = coinsGroup.Key
};
purse.PurseCoins.Add(findCoin);
}
findCoin.Count += coinsGroup.Count();
}
await Update(purse);
}
