private IbanCountry?GetMatchingCountry(string iban)
{
string?countryCode = GetCountryCode(iban);
if (countryCode is null)
{
return(null);
}
return(_ibanRegistry.TryGetValue(countryCode, out IbanCountry? country) ? country : null);
}
/// <summary>
/// Adds the specified <paramref name="countryCode"/> to the builder.
/// </summary>
/// <param name="builder">The builder.</param>
/// <param name="countryCode">The country code.</param>
/// <param name="registry">The IBAN registry to resolve the country from.</param>
/// <returns>The builder to continue chaining.</returns>
public static IBankAccountBuilder WithCountry(this IBankAccountBuilder builder, string countryCode, IIbanRegistry registry)
{
if (builder is null)
{
throw new ArgumentNullException(nameof(builder));
}
if (registry is null)
{
throw new ArgumentNullException(nameof(registry));
}
if (!registry.TryGetValue(countryCode, out IbanCountry? country))
{
throw new ArgumentException(Resources.ArgumentException_Builder_The_country_code_is_not_registered, nameof(countryCode));
}
return(builder.WithCountry(country));
}