public VendingMachineResponse ReturnCoins()
{
var response = new VendingMachineResponse();
response.Product = null;
response.Change = _changeCalculator.GetChange(this.CurrentTransaction.Balance);
this.CurrentTransaction = null;
this.CurrentSelectedProduct = null;
return(response);
}
public VendingMachineResponse SelectProduct(ProductCode code)
{
if (this.Products.Count(p => p.Code == code) > 0)
{
var product = this.Products.First(p => p.Code == code);
CurrentSelectedProduct = product;
if (product.Cost > this.CurrentTransaction.Balance)
{
var errorResponse = new VendingMachineResponse()
{
Message = $"PRICE: {product.Cost.ToString("C2")}. INSERT COIN.",
Product = product
};
return(errorResponse);
}
var response = new VendingMachineResponse()
{
Message = "THANK YOU",
Product = product,
};
if (product.Cost < this.CurrentTransaction.Balance)
{
response.Change = _changeCalculator.GetChange(CurrentTransaction.Balance - product.Cost);
}
this.Products.Remove(product);
this.CurrentTransaction = null;
this.CurrentSelectedProduct = null;
return(response);
}
else
{
var response = new VendingMachineResponse()
{
Message = "SOLD OUT",
Product = null
};
return(response);
};
}
