public async Task PurchaseShopItem(int itemId, User activeUser)
{
using (var trans = TransactionScopeFactory.Create())
{
(ShopItem shopItem, InventoryItem item)purchaseItem = (await ShopRepo.RetrieveShopItemByItemId(itemId)).FirstOrDefault();
if (purchaseItem.shopItem?.Price > 0 && activeUser.Cash >= purchaseItem.shopItem.Price)
{
var userChanges = new List <(int UserId, int CashDelta)> {
(activeUser.Id, (-1) * purchaseItem.shopItem.Price.Value)
};
if (purchaseItem.item.OwnerUserId != null)
{
userChanges.Add((purchaseItem.item.OwnerUserId.Value, purchaseItem.shopItem.Price.Value));//owner can be null if NPC shop
}
await UserDomain.ChangeUsersCash(userChanges);
await InventoryDomain.TransferItemOwner(activeUser.Id, purchaseItem.item.Id, purchaseItem.item.OwnerUserId);
if (!await ShopRepo.RemoveShopItem(itemId))
{
throw new CritterException("Couldn't purchase item!", $"Failed to remove {itemId} from its shop", System.Net.HttpStatusCode.Conflict);
}
}
trans.Complete();
}
}
internal async Task <bool> ChangeItemOwner(int itemId, int?newOwnerId, int?currentOwnerId)
{
try
{
await InventoryDomain.TransferItemOwner(newOwnerId, itemId, currentOwnerId);
} catch (Exception ex)
{
Log.Logger.Error(ex, "Failed to transfer item ownership via NPC action.");
return(false);
}
return(true);
}