using Acl.Application;
using Acl.Infrastructure;

namespace Acl.IntegrationTests;

/// <summary>
/// S-04a (#46): the deferred S-04 acceptance criterion — the ACL's OpenZaakGateway
/// opening a zaak against a *real* OpenZaak, exercising real ZGW JWT auth and the
/// real POST /zaken/api/v1/zaken contract (CRS headers, default-fill, the created
/// zaak URL) that the stubbed-HttpMessageHandler unit tests cannot. See ADR-0006.
/// </summary>
[Trait("Category", "Integration")]
[Collection(OpenZaakCollection.Name)]
public sealed class OpenZaakGatewayIntegrationTests(OpenZaakFixture stack)
{
    [Fact]
    public async Task Opens_a_real_zaak_against_the_published_big_zaaktype_and_returns_its_url()
    {
        var zaaktype = await stack.FindPublishedBigZaaktypeAsync();
        Assert.True(zaaktype is not null,
            "No published BIG-REGISTRATIE zaaktype found in OpenZaak — bring the stack up and " +
            "seed it with OZ_PUBLISH=1 (`make integration` does this).");

        var gateway = new OpenZaakGateway(stack.Http, stack.Options);
        var reference = Guid.NewGuid().ToString(); // zaak identificatie must be unique per bronorganisatie
        var request = new ZaakRequest(
            Bronorganisatie: "517439943",
            VerantwoordelijkeOrganisatie: "517439943",
            Vertrouwelijkheidaanduiding: "openbaar",
            Zaaktype: zaaktype!,
            Startdatum: DateOnly.FromDateTime(DateTime.UtcNow),
            Identificatie: reference);

        var zaakUrl = await gateway.OpenZaakAsync(request);

        // The gateway returns the canonical zaak URL on OpenZaak's Zaken API...
        Assert.StartsWith(
            new Uri(stack.BaseUrl, "/zaken/api/v1/zaken/").ToString(),
            zaakUrl.ToString());

        // ...and that zaak is really persisted with the default-filled fields + the reference identificatie.
        var zaak = await stack.GetZaakAsync(zaakUrl);
        Assert.Equal(zaaktype.ToString(), zaak.GetProperty("zaaktype").GetString());
        Assert.Equal("517439943", zaak.GetProperty("bronorganisatie").GetString());
        Assert.Equal("openbaar", zaak.GetProperty("vertrouwelijkheidaanduiding").GetString());
        Assert.Equal(reference, zaak.GetProperty("identificatie").GetString());
    }

    [Fact]
    public async Task Setting_a_zaak_to_its_eindstatus_records_the_terminal_statustype()
    {
        var zaaktype = await stack.FindPublishedBigZaaktypeAsync();
        Assert.True(zaaktype is not null,
            "No published BIG-REGISTRATIE zaaktype found in OpenZaak — bring the stack up and " +
            "seed it with OZ_PUBLISH=1 (`make integration` does this).");

        var gateway = new OpenZaakGateway(stack.Http, stack.Options);
        var zaakUrl = await gateway.OpenZaakAsync(new ZaakRequest(
            Bronorganisatie: "517439943",
            VerantwoordelijkeOrganisatie: "517439943",
            Vertrouwelijkheidaanduiding: "openbaar",
            Zaaktype: zaaktype!,
            Startdatum: DateOnly.FromDateTime(DateTime.UtcNow),
            Identificatie: Guid.NewGuid().ToString()));

        await gateway.SetZaakToEindstatusAsync(zaakUrl, zaaktype!, DateOnly.FromDateTime(DateTime.UtcNow));

        // The zaak now carries a current status, and it is the zaaktype's eindstatus.
        var zaak = await stack.GetZaakAsync(zaakUrl);
        var statusUrl = zaak.GetProperty("status").GetString();
        Assert.False(string.IsNullOrEmpty(statusUrl), "the approved zaak has no current status");

        var status = await stack.GetJsonAsync(new Uri(statusUrl!));
        var eindstatustype = await stack.FindEindstatustypeAsync(zaaktype!);
        Assert.Equal(eindstatustype.ToString(), status.GetProperty("statustype").GetString());
    }

    [Fact]
    public async Task Cancelling_a_zaak_records_the_geannuleerd_status_and_a_resultaat()
    {
        var zaaktype = await stack.FindPublishedBigZaaktypeAsync();
        Assert.True(zaaktype is not null,
            "No published BIG-REGISTRATIE zaaktype found in OpenZaak — bring the stack up and " +
            "seed it with OZ_PUBLISH=1 (`make integration` does this).");

        var gateway = new OpenZaakGateway(stack.Http, stack.Options);
        var zaakUrl = await gateway.OpenZaakAsync(new ZaakRequest(
            Bronorganisatie: "517439943",
            VerantwoordelijkeOrganisatie: "517439943",
            Vertrouwelijkheidaanduiding: "openbaar",
            Zaaktype: zaaktype!,
            Startdatum: DateOnly.FromDateTime(DateTime.UtcNow),
            Identificatie: Guid.NewGuid().ToString()));

        await gateway.SetZaakToCancellationStatusAsync(zaakUrl, zaaktype!, DateOnly.FromDateTime(DateTime.UtcNow));

        // The zaak's current status is the Geannuleerd statustype — distinct from the approval eindstatus.
        var zaak = await stack.GetZaakAsync(zaakUrl);
        var statusUrl = zaak.GetProperty("status").GetString();
        Assert.False(string.IsNullOrEmpty(statusUrl), "the cancelled zaak has no current status");

        var status = await stack.GetJsonAsync(new Uri(statusUrl!));
        var geannuleerd = await stack.FindStatustypeByOmschrijvingAsync(zaaktype!, "Geannuleerd");
        Assert.Equal(geannuleerd.ToString(), status.GetProperty("statustype").GetString());

        // ...and a resultaat is recorded (OpenZaak requires it before a closing/terminal status).
        Assert.False(string.IsNullOrEmpty(zaak.GetProperty("resultaat").GetString()),
            "the cancelled zaak has no resultaat");
    }

    [Fact]
    public async Task Storing_a_diploma_creates_a_real_informatieobject_related_to_the_zaak()
    {
        var zaaktype = await stack.FindPublishedBigZaaktypeAsync();
        Assert.True(zaaktype is not null,
            "No published BIG-REGISTRATIE zaaktype found — seed the stack with OZ_PUBLISH=1.");
        var informatieobjecttype = await stack.FindPublishedDiplomaInformatieobjecttypeAsync();
        Assert.True(informatieobjecttype is not null,
            "No published Diploma informatieobjecttype found — seed the stack with OZ_PUBLISH=1.");

        var gateway = new OpenZaakGateway(stack.Http, stack.Options);
        var zaakUrl = await gateway.OpenZaakAsync(new ZaakRequest(
            Bronorganisatie: "517439943",
            VerantwoordelijkeOrganisatie: "517439943",
            Vertrouwelijkheidaanduiding: "openbaar",
            Zaaktype: zaaktype!,
            Startdatum: DateOnly.FromDateTime(DateTime.UtcNow),
            Identificatie: Guid.NewGuid().ToString()));

        var content = System.Text.Encoding.UTF8.GetBytes("%PDF-1.4 synthetic diploma\n");
        var documentUrl = await gateway.StoreDocumentAsync(new DocumentRequest(
            Bronorganisatie: "517439943",
            Informatieobjecttype: informatieobjecttype!,
            Vertrouwelijkheidaanduiding: "openbaar",
            Zaak: zaakUrl,
            Creatiedatum: DateOnly.FromDateTime(DateTime.UtcNow),
            Titel: "Diploma",
            Auteur: "zorgprofessional",
            Taal: "nld",
            Bestandsnaam: "diploma.pdf",
            Formaat: "application/pdf",
            Inhoud: content));

        // The gateway returns the canonical informatieobject URL...
        Assert.StartsWith(
            new Uri(stack.BaseUrl, "/documenten/api/v1/enkelvoudiginformatieobjecten/").ToString(),
            documentUrl.ToString());

        // ...the document is really persisted with the default-filled fields...
        var doc = await stack.GetJsonAsync(documentUrl);
        Assert.Equal("diploma.pdf", doc.GetProperty("bestandsnaam").GetString());
        Assert.Equal(informatieobjecttype.ToString(), doc.GetProperty("informatieobjecttype").GetString());
        Assert.Equal(content.Length, doc.GetProperty("bestandsomvang").GetInt32());
        // indicatieGebruiksrecht is recorded as "no restrictions"; left null, OpenZaak would refuse to
        // close the zaak this document is related to (the S-10b regression that broke the e2e flow).
        Assert.False(doc.GetProperty("indicatieGebruiksrecht").GetBoolean());

        // ...and it is related to the zaak (a zaakinformatieobject links the two).
        var relations = await stack.GetJsonAsync(new Uri(stack.BaseUrl,
            "/zaken/api/v1/zaakinformatieobjecten?informatieobject=" + Uri.EscapeDataString(documentUrl.ToString())));
        Assert.Contains(relations.EnumerateArray(),
            r => r.GetProperty("zaak").GetString() == zaakUrl.ToString());
    }

    [Fact]
    public async Task Resolves_the_published_zaaktype_and_diploma_informatieobjecttype_by_business_key()
    {
        var expectedZaaktype = await stack.FindPublishedBigZaaktypeAsync();
        Assert.True(expectedZaaktype is not null,
            "No published BIG-REGISTRATIE zaaktype found — seed the stack with OZ_PUBLISH=1.");
        var expectedInformatieobjecttype = await stack.FindPublishedDiplomaInformatieobjecttypeAsync();
        Assert.True(expectedInformatieobjecttype is not null,
            "No published Diploma informatieobjecttype found — seed the stack with OZ_PUBLISH=1.");

        var gateway = new OpenZaakGateway(stack.Http, stack.Options);

        // The ACL discovers both URLs from the live Catalogi API by their stable business keys (S-27),
        // matching what the fixture found independently — no pinned URL needed.
        Assert.Equal(expectedZaaktype, await gateway.ResolveZaaktypeUrlAsync("BIG-REGISTRATIE"));
        Assert.Equal(expectedInformatieobjecttype, await gateway.ResolveInformatieobjecttypeUrlAsync("Diploma"));
    }

    [Fact]
    public async Task Resolving_an_unknown_zaaktype_identificatie_throws_a_clear_error()
    {
        var gateway = new OpenZaakGateway(stack.Http, stack.Options);

        var ex = await Assert.ThrowsAsync<InvalidOperationException>(
            () => gateway.ResolveZaaktypeUrlAsync("NO-SUCH-ZAAKTYPE"));
        Assert.Contains("NO-SUCH-ZAAKTYPE", ex.Message);
    }
}