using EntKube.Clusters.Domain;
using EntKube.Clusters.Features.GetClusterById;
using EntKube.Clusters.Infrastructure;
using EntKube.SharedKernel.Domain;
using FluentAssertions;

namespace EntKube.Clusters.Tests.Features;

public class GetClusterByIdHandlerTests
{
    private readonly GetClusterByIdHandler handler;
    private readonly InMemoryClusterRepository repository;

    public GetClusterByIdHandlerTests()
    {
        repository = new InMemoryClusterRepository();
        handler = new GetClusterByIdHandler(repository);
    }

    [Fact]
    public async Task HandleAsync_WithExistingCluster_ReturnsSuccess()
    {
        // Arrange — Register a cluster so the repository has something to find.

        KubernetesCluster cluster = KubernetesCluster.Register(
            "production-eu",
            "https://k8s.example.com:6443",
            "kubeconfig-data",
            Guid.NewGuid(),
            "prod-ctx", Guid.NewGuid());

        await repository.AddAsync(cluster);

        // Act — Look it up by its ID.

        Result<KubernetesCluster> result = await handler.HandleAsync(cluster.Id);

        // Assert — The handler should return the full cluster aggregate.

        result.IsSuccess.Should().BeTrue();
        result.Value.Should().NotBeNull();
        result.Value!.Name.Should().Be("production-eu");
    }

    [Fact]
    public async Task HandleAsync_WithNonExistentId_ReturnsFailure()
    {
        // Arrange — An ID that doesn't exist in the repository.

        Guid unknownId = Guid.NewGuid();

        // Act

        Result<KubernetesCluster> result = await handler.HandleAsync(unknownId);

        // Assert

        result.IsFailure.Should().BeTrue();
        result.Error.Should().Contain("not found");
    }
}