using Akka.Actor;
using Akka.TestKit.Xunit2;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging.Abstractions;
using NSubstitute;
using ZB.MOM.WW.ScadaBridge.Commons.Entities.Templates;
using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Repositories;
using ZB.MOM.WW.ScadaBridge.Commons.Messages.Management;

namespace ZB.MOM.WW.ScadaBridge.ManagementService.Tests;

/// <summary>
/// Review 2026-10-21 (lane F follow-up to 01/SR-C1): a native alarm source's name becomes
/// part of the site actor name <c>native-alarm-{canonical}</c>. Template scripts, alarms and
/// composition slots are validated by <c>TemplateService</c>, but native-source CRUD is
/// repository-direct in the ManagementActor, so it must apply <c>ActorNameRules</c> itself.
/// </summary>
public class NativeAlarmSourceNameValidationTests : TestKit
{
    private readonly ITemplateEngineRepository _repo = Substitute.For<ITemplateEngineRepository>();
    private readonly ServiceCollection _services = new ServiceCollection().AddTestConfigurationTransaction();

    /// <summary>Initializes the harness.</summary>
    public NativeAlarmSourceNameValidationTests()
    {
        _services.AddScoped(_ => _repo);
        _repo.GetTemplateNativeAlarmSourceByIdAsync(4, Arg.Any<CancellationToken>())
            .Returns(new TemplateNativeAlarmSource("Pressure") { Id = 4, TemplateId = 1 });
    }

    private IActorRef CreateActor() =>
        Sys.ActorOf(Props.Create(() => new ManagementActor(
            _services.BuildServiceProvider(), NullLogger<ManagementActor>.Instance)));

    private static ManagementEnvelope Designer(object command) =>
        new(new AuthenticatedUser("d", "D", new[] { "Designer" }, Array.Empty<string>()),
            command, Guid.NewGuid().ToString("N"));

    /// <summary>Adding a source whose name is not a legal actor name is rejected before any write.</summary>
    [Theory]
    [InlineData("Tank Pressure")]
    [InlineData("$system")]
    [InlineData("a/b")]
    public void Add_InvalidActorName_IsRejected(string name)
    {
        CreateActor().Tell(Designer(new AddTemplateNativeAlarmSourceCommand(1, name, "Opc", "ns=2;s=T01", null, null, false)));

        var error = ExpectMsg<ManagementError>(TimeSpan.FromSeconds(5));
        Assert.Contains("Native alarm source name is invalid", error.Error);
        _repo.DidNotReceive().AddTemplateNativeAlarmSourceAsync(Arg.Any<TemplateNativeAlarmSource>(), Arg.Any<CancellationToken>());
    }

    /// <summary>Renaming a source to an illegal actor name is rejected before any write.</summary>
    [Fact]
    public void Update_RenameToInvalidActorName_IsRejected()
    {
        CreateActor().Tell(Designer(new UpdateTemplateNativeAlarmSourceCommand(4, "Tank Pressure", "Opc", "ns=2;s=T01", null, null, false)));

        var error = ExpectMsg<ManagementError>(TimeSpan.FromSeconds(5));
        Assert.Contains("Native alarm source name is invalid", error.Error);
        _repo.DidNotReceive().UpdateTemplateNativeAlarmSourceAsync(Arg.Any<TemplateNativeAlarmSource>(), Arg.Any<CancellationToken>());
    }
}