using Big.Domain;

namespace Big.Tests;

public class RegistrationTests
{
    [Fact]
    public void Submitting_a_registration_starts_in_ingediend()
    {
        var registration = Registration.Submit("123456782");

        Assert.Equal(RegistrationStatus.Ingediend, registration.Status);
        Assert.Equal("123456782", registration.Bsn);
        Assert.NotEqual(Guid.Empty, registration.Id.Value);
        Assert.Null(registration.ZaakUrl);
        Assert.Null(registration.ProcessInstanceId);
    }

    [Theory]
    [InlineData("")]
    [InlineData("   ")]
    [InlineData(null)]
    public void Submitting_without_a_bsn_is_rejected(string? bsn)
        => Assert.ThrowsAny<ArgumentException>(() => Registration.Submit(bsn!));

    [Fact]
    public void Recording_the_started_process_keeps_its_instance_id()
    {
        var registration = Registration.Submit("123456782");

        registration.RecordProcessStarted("proc-42");

        Assert.Equal("proc-42", registration.ProcessInstanceId);
    }

    [Fact]
    public void Attaching_a_zaak_records_its_url_and_keeps_the_status_ingediend()
    {
        var registration = Registration.Submit("123456782");
        var zaak = new Uri("http://openzaak/zaken/api/v1/zaken/abc");

        registration.AttachZaak(zaak);

        Assert.Equal(zaak, registration.ZaakUrl);
        Assert.Equal(RegistrationStatus.Ingediend, registration.Status);
    }

    [Fact]
    public void Attaching_a_null_zaak_is_rejected()
    {
        var registration = Registration.Submit("123456782");

        Assert.Throws<ArgumentNullException>(() => registration.AttachZaak(null!));
    }

    [Fact]
    public void Re_attaching_the_same_zaak_is_idempotent()
    {
        var registration = Registration.Submit("123456782");
        var zaak = new Uri("http://openzaak/zaken/api/v1/zaken/abc");

        registration.AttachZaak(zaak);
        registration.AttachZaak(zaak);

        Assert.Equal(zaak, registration.ZaakUrl);
    }

    [Fact]
    public void Attaching_a_conflicting_zaak_is_rejected()
    {
        var registration = Registration.Submit("123456782");
        registration.AttachZaak(new Uri("http://openzaak/zaken/api/v1/zaken/abc"));

        Assert.Throws<InvalidOperationException>(
            () => registration.AttachZaak(new Uri("http://openzaak/zaken/api/v1/zaken/other")));
    }
}