vkhorikov

[HttpPost]
public HttpResponseMessage CreateCustomer(string name, string billingInfo)
{
    Result<BillingInfo> billingInfoResult = BillingInfo.Create(billingInfo);
    Result<CustomerName> customerNameResult = CustomerName.Create(name);

    return Result.Combine(billingInfoResult, customerNameResult)
        .OnSuccess(() => _paymentGateway.ChargeCommission(billingInfoResult.Value))
        .OnSuccess(() => new Customer(customerNameResult.Value))
        .OnSuccess(

vkhorikov

public class Customer
{
    public CustomerName Name { get; private set; }
    public Email Email { get; private set; }

    public Customer(CustomerName name, Email email)
    {
        if (name == null)
            throw new ArgumentNullException("name");
        if (email == null)

vkhorikov

public class Customer
{
    public string Name { get; private set; }
    public string Email { get; private set; }

    public Customer(string name, string email)
    {
        // Validate name
        if (string.IsNullOrWhiteSpace(name) || name.Length > 50)
            throw new ArgumentException("Name is invalid");