private Task ExecuteUseCase(string inputOperation, List <IUseCase> useCases, CancellationToken cancellationToken)
{
if (int.TryParse(inputOperation, out int index))
{
// An index was entered as input.
if (useCases.Count >= index)
{
return(useCases[index - 1].ExecuteAsync(cancellationToken));
}
}
else
{
// Use case name was entered as input.
IUseCase useCase = useCases.FirstOrDefault(u => string.Equals(u.Name, inputOperation, StringComparison.OrdinalIgnoreCase));
if (useCase != null)
{
return(useCase.ExecuteAsync(cancellationToken));
}
}
// Invalid operation. Display valid operations.
System.Console.WriteLine($"Invalid operation: {inputOperation}");
DisplayRegisteredOperations(useCases);
return(Task.CompletedTask);
}
private Task ExecuteUseCase(IUseCase useCase, CancellationToken cancellationToken = default(CancellationToken))
{
if (useCase == null)
{
throw new ArgumentNullException(nameof(useCase));
}
return(useCase.ExecuteAsync(cancellationToken));
}