public virtual Result <bool> CanBuyFromVendor(ICustomer <T> customer, T item, int amount = 1)
{
//
// Vendor
//
var index = vendorCollection.IndexOf(o => o?.item != null && o.item.Equals(item));
if (index == -1)
{
return(new Result <bool>(false, Errors.VendorDoesNotContainItem));
}
var product = vendorCollection[index];
if (product.buyPrice.Length == 0)
{
return(new Result <bool>(false, Errors.VendorProductHasNoPrice));
}
var canRemove = vendorCollection.CanRemove(product, amount);
if (canRemove.result == false)
{
return(canRemove);
}
foreach (var c in product.buyPrice)
{
var vendorCanAddCurrency = vendorCurrencies.CanAdd(c.currency, c.amount * amount * config.buyFromVendorPriceMultiplier);
if (vendorCanAddCurrency.result == false)
{
return(vendorCanAddCurrency);
}
}
//
// Customer
//
var canAdd = customer.CanAddItem(product.item, amount);
if (canAdd.result == false)
{
return(canAdd);
}
foreach (var c in product.buyPrice)
{
var canRemoveCurrency = customer.CanRemoveCurrency(c.currency, c.amount * amount * config.buyFromVendorPriceMultiplier);
if (canRemoveCurrency.result == false)
{
return(canRemoveCurrency);
}
}
return(true);
}