namespace Acl.Application;

/// <summary>The ACL's single operation: open a zaak from a domain payload,
/// default-filling the ZGW-mandatory fields (ADR-0003).</summary>
public sealed class AclService(IZaakGateway gateway, AclDefaults defaults, IClock clock)
{
    public Task<Uri> OpenZaakAsync(DomainRegistration registration, CancellationToken ct = default)
    {
        ArgumentNullException.ThrowIfNull(registration);

        var request = new ZaakRequest(
            defaults.Bronorganisatie,
            defaults.VerantwoordelijkeOrganisatie,
            defaults.Vertrouwelijkheidaanduiding,
            defaults.ZaaktypeUrl,
            clock.Today,
            registration.Reference);

        return gateway.OpenZaakAsync(request, ct);
    }

    /// <summary>
    /// Approve a zaak: set it to the eindstatus of the configured BIG zaaktype (ADR-0003 default). The
    /// domain hands over only the zaak URL; the ACL owns which statustype means "approved" (§8.1).
    /// </summary>
    public Task ApproveZaakAsync(Uri zaakUrl, CancellationToken ct = default)
    {
        ArgumentNullException.ThrowIfNull(zaakUrl);

        return gateway.SetZaakToEindstatusAsync(zaakUrl, defaults.ZaaktypeUrl, clock.Today, ct);
    }

    /// <summary>The zaak's reference (its ZGW identificatie), for the read projection (#78).</summary>
    public Task<string> GetZaakReferenceAsync(Uri zaakUrl, CancellationToken ct = default)
    {
        ArgumentNullException.ThrowIfNull(zaakUrl);

        return gateway.GetZaakIdentificatieAsync(zaakUrl, ct);
    }
}