protected int PromptForCreateOrExist <T>(Func <int> creationFunction, Func <int> existingFunction)
where T : SEntity
{
int result;
bool itemExists = StoreManagerApplication.Any <T>();
bool createItem = true;
if (itemExists)
{
createItem = CUI.PromptForBool($"Create a new {_typeNames[typeof(T)]} or use one that is existing?", "create", "existing");
}
else
{
Console.WriteLine($"No {_typeNames[typeof(T)]}s exist; please create a {_typeNames[typeof(T)]}.");
}
if (createItem)
{
// create the item
result = creationFunction();
}
else
{
// just get the id
result = existingFunction();
}
return(result);
}
private void DisplayOrderDetails()
{
// get the order id
// display its data
if (!StoreManagerApplication.Any <Order>())
{
Console.WriteLine("No orders present");
}
else
{
int orderId = PromptForId <Order>();
// Display the order
DisplayOrder(orderId);
}
}
public void AnyCustomerExists()
{
Assert.True(StoreManagerApplication.Any <Customer>(), "No customers were found in the database.");
}