using System.Text.Json;
using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Runtime.Drivers;

namespace ZB.MOM.WW.OtOpcUa.Runtime.Tests.Drivers;

/// <summary>
///     Verifies the artifact-decode mirror (<see cref="DeploymentArtifact.ParseComposition(System.ReadOnlySpan{byte})"/>)
///     admits a Galaxy alias tag — an equipment-scoped tag (non-null <c>EquipmentId</c>) bound to a
///     <c>GalaxyMxGateway</c> driver in a <c>SystemPlatform</c>-kind namespace — into the decoded
///     <c>EquipmentTags</c> with byte-parity to the live-edit composer path: same FullName, EquipmentId,
///     DriverInstanceId, Name, DataType. The composer broadens the same filter by DriverType, so both
///     data-contract sites must agree on which tags qualify.
/// </summary>
public sealed class DeploymentArtifactAliasParityTests
{
    /// <summary>An artifact JSON blob with a GalaxyMxGateway driver in a SystemPlatform (Kind=1)
    /// namespace and one equipment-scoped alias tag (EquipmentId set, FolderPath null, FullName = the
    /// Galaxy ref). Decode must surface the alias in EquipmentTags carrying its driver-side FullName.</summary>
    [Fact]
    public void ParseComposition_admits_galaxy_alias_tag_in_equipment_tags()
    {
        var blob = JsonSerializer.SerializeToUtf8Bytes(new
        {
            Namespaces = new[]
            {
                new { NamespaceId = "ns-sp", Kind = 1 }, // NamespaceKind.SystemPlatform
            },
            DriverInstances = new[]
            {
                new { DriverInstanceId = "drv-galaxy", DriverType = "GalaxyMxGateway", DriverConfig = "{}", NamespaceId = "ns-sp" },
            },
            Tags = new object[]
            {
                new
                {
                    TagId = "tag-alias",
                    DriverInstanceId = "drv-galaxy",
                    EquipmentId = "eq-1",
                    Name = "TestChangingInt",
                    FolderPath = (string?)null,
                    DataType = "Int32",
                    TagConfig = "{\"FullName\":\"TestMachine_020.TestChangingInt\"}",
                },
            },
        });

        var c = DeploymentArtifact.ParseComposition(blob);

        var alias = c.EquipmentTags.ShouldHaveSingleItem();
        alias.TagId.ShouldBe("tag-alias");
        alias.EquipmentId.ShouldBe("eq-1");
        alias.DriverInstanceId.ShouldBe("drv-galaxy");
        alias.Name.ShouldBe("TestChangingInt");
        alias.DataType.ShouldBe("Int32");
        alias.FolderPath.ShouldBe(string.Empty);
        alias.FullName.ShouldBe("TestMachine_020.TestChangingInt");
    }

    /// <summary>An equipment-scoped tag bound to a non-Galaxy driver in a SystemPlatform namespace is
    /// NOT a Galaxy alias and must stay excluded from EquipmentTags — the broadened clause keys on the
    /// GalaxyMxGateway DriverType, not on the namespace kind, so the contract narrows correctly.</summary>
    [Fact]
    public void ParseComposition_excludes_non_galaxy_systemplatform_equipment_tag()
    {
        var blob = JsonSerializer.SerializeToUtf8Bytes(new
        {
            Namespaces = new[]
            {
                new { NamespaceId = "ns-sp", Kind = 1 }, // NamespaceKind.SystemPlatform
            },
            DriverInstances = new[]
            {
                new { DriverInstanceId = "drv-modbus", DriverType = "Modbus", DriverConfig = "{}", NamespaceId = "ns-sp" },
            },
            Tags = new object[]
            {
                new
                {
                    TagId = "tag-x",
                    DriverInstanceId = "drv-modbus",
                    EquipmentId = "eq-1",
                    Name = "Source",
                    FolderPath = (string?)null,
                    DataType = "Int32",
                    TagConfig = "{\"FullName\":\"TestMachine_020.Source\"}",
                },
            },
        });

        var c = DeploymentArtifact.ParseComposition(blob);

        c.EquipmentTags.ShouldBeEmpty();
    }
}