using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Core.Authorization;
using ZB.MOM.WW.OtOpcUa.Server.Security;

namespace ZB.MOM.WW.OtOpcUa.Server.Tests;

[Trait("Category", "Unit")]
public sealed class NodeScopeResolverTests
{
    [Fact]
    public void Resolve_PopulatesClusterAndTag()
    {
        var resolver = new NodeScopeResolver("c-warsaw");

        var scope = resolver.Resolve("TestMachine_001/Oven/SetPoint");

        scope.ClusterId.ShouldBe("c-warsaw");
        scope.TagId.ShouldBe("TestMachine_001/Oven/SetPoint");
        scope.Kind.ShouldBe(NodeHierarchyKind.Equipment);
    }

    [Fact]
    public void Resolve_Leaves_UnsPath_Null_For_Phase1()
    {
        var resolver = new NodeScopeResolver("c-1");

        var scope = resolver.Resolve("tag-1");

        // Phase 1 flat scope — finer resolution tracked as Stream C.12 follow-up.
        scope.NamespaceId.ShouldBeNull();
        scope.UnsAreaId.ShouldBeNull();
        scope.UnsLineId.ShouldBeNull();
        scope.EquipmentId.ShouldBeNull();
    }

    [Fact]
    public void Resolve_Throws_OnEmptyFullReference()
    {
        var resolver = new NodeScopeResolver("c-1");

        Should.Throw<ArgumentException>(() => resolver.Resolve(""));
        Should.Throw<ArgumentException>(() => resolver.Resolve("   "));
    }

    [Fact]
    public void Ctor_Throws_OnEmptyClusterId()
    {
        Should.Throw<ArgumentException>(() => new NodeScopeResolver(""));
    }

    [Fact]
    public void Resolver_IsStateless_AcrossCalls()
    {
        var resolver = new NodeScopeResolver("c");
        var s1 = resolver.Resolve("tag-a");
        var s2 = resolver.Resolve("tag-b");

        s1.TagId.ShouldBe("tag-a");
        s2.TagId.ShouldBe("tag-b");
        s1.ClusterId.ShouldBe("c");
        s2.ClusterId.ShouldBe("c");
    }
}