using Acl.Application;

namespace Acl.Tests;

public class AclServiceTests
{
    private sealed class FakeGateway : IZaakGateway
    {
        public ZaakRequest? Captured;
        public Uri Result { get; } = new("http://openzaak/zaken/api/v1/zaken/abc");

        public Task<Uri> OpenZaakAsync(ZaakRequest request, CancellationToken ct = default)
        {
            Captured = request;
            return Task.FromResult(Result);
        }
    }

    private sealed class FixedClock(DateOnly today) : IClock
    {
        public DateOnly Today { get; } = today;
    }

    [Fact]
    public async Task Opening_a_zaak_default_fills_zgw_fields_and_returns_the_zaak_url()
    {
        var gateway = new FakeGateway();
        var defaults = new AclDefaults
        {
            Bronorganisatie = "517439943",
            VerantwoordelijkeOrganisatie = "517439943",
            Vertrouwelijkheidaanduiding = "openbaar",
            ZaaktypeUrl = new("http://openzaak/catalogi/api/v1/zaaktypen/big"),
        };
        var service = new AclService(gateway, defaults, new FixedClock(new DateOnly(2026, 6, 4)));

        var url = await service.OpenZaakAsync(new DomainRegistration("123456782"));

        Assert.Equal(gateway.Result, url);
        var req = Assert.IsType<ZaakRequest>(gateway.Captured);
        Assert.Equal("517439943", req.Bronorganisatie);
        Assert.Equal("517439943", req.VerantwoordelijkeOrganisatie);
        Assert.Equal("openbaar", req.Vertrouwelijkheidaanduiding);
        Assert.Equal(defaults.ZaaktypeUrl, req.Zaaktype);
        Assert.Equal(new DateOnly(2026, 6, 4), req.Startdatum);
    }

    [Fact]
    public async Task Rejects_a_null_registration_without_calling_the_gateway()
    {
        var gateway = new FakeGateway();
        var defaults = new AclDefaults
        {
            Bronorganisatie = "517439943",
            VerantwoordelijkeOrganisatie = "517439943",
            Vertrouwelijkheidaanduiding = "openbaar",
            ZaaktypeUrl = new("http://openzaak/catalogi/api/v1/zaaktypen/big"),
        };
        var service = new AclService(gateway, defaults, new FixedClock(new DateOnly(2026, 6, 4)));

        await Assert.ThrowsAsync<ArgumentNullException>(() => service.OpenZaakAsync(null!));
        Assert.Null(gateway.Captured);
    }
}