public BuyResponse Buy(BuyRequest request)
{
var response = new BuyResponse();
try
{
// Подсчитываем общее кол-во монет с учетом вновь прибывших
var coinsBuffer = _coinService.GetAllCoins().OrderByDescending(x => x.Value);
var totalCoins = 0;
foreach (var coin in coinsBuffer)
{
foreach (var coinOrder in request.Coins)
{
if (coin.Id == coinOrder.Key)
{
totalCoins += coin.Value * coinOrder.Value;
coin.Count += coinOrder.Value;
}
}
}
var refund = totalCoins - request.TotalCost;
if (refund != 0)
{
response.Refund = CalculateRefund(refund, coinsBuffer);
}
foreach (var drinkId in request.Drinks)
{
var drink = _drinkService.GetDrinkById(drinkId);
if (drink != null)
{
drink.Count += -1;
_drinkService.Update(drink);
}
}
if (response.Refund != null && response.Refund.Count > 0)
{
foreach (var itemDictionary in response.Refund)
{
itemDictionary.Key.Count += -itemDictionary.Value;
_coinService.Update(itemDictionary.Key);
}
}
}
catch (Exception e)
{
response.ErrorCode = 1;
response.Message = e.Message;
}
return(response);
}
public CoinsListResponse GetDrinks()
{
try
{
return(new CoinsListResponse
{
Coins = _coinService.GetAllCoins()
});
}
catch
{
return(null);
}
}
