using FluentAssertions;
using Microsoft.Extensions.Time.Testing;
using NSubstitute;
using SIGCM2.Application.Abstractions.Persistence;
using SIGCM2.Application.Audit;
using SIGCM2.Application.Rubros.Update;
using SIGCM2.Domain.Entities;
using SIGCM2.Domain.Exceptions;

namespace SIGCM2.Application.Tests.Rubros.Update;

public class UpdateRubroCommandHandlerTests
{
    private readonly IRubroRepository _repo = Substitute.For<IRubroRepository>();
    private readonly IAuditLogger _audit = Substitute.For<IAuditLogger>();
    private readonly FakeTimeProvider _timeProvider = new(new DateTimeOffset(2026, 4, 18, 12, 0, 0, TimeSpan.Zero));
    private readonly UpdateRubroCommandHandler _handler;

    private static Rubro ExistingRubro(int id = 3) => new(id, null, "Autos", 0, activo: true,
        tarifarioBaseId: null, fechaCreacion: DateTime.UtcNow, fechaModificacion: null);

    public UpdateRubroCommandHandlerTests()
    {
        _repo.ExistsByNombreUnderParentAsync(Arg.Any<int?>(), Arg.Any<string>(), Arg.Any<int?>(), Arg.Any<CancellationToken>())
             .Returns(false);

        _handler = new UpdateRubroCommandHandler(_repo, _audit, _timeProvider);
    }

    // ── Happy path: rename ───────────────────────────────────────────────────

    [Fact]
    public async Task Handle_HappyPath_Rename_ReturnsUpdatedDto()
    {
        _repo.GetByIdAsync(3, Arg.Any<CancellationToken>()).Returns(ExistingRubro());

        var result = await _handler.Handle(new UpdateRubroCommand(Id: 3, Nombre: "Vehiculos"));

        result.Nombre.Should().Be("Vehiculos");
        result.Id.Should().Be(3);
    }

    [Fact]
    public async Task Handle_HappyPath_Rename_CallsUpdateAsync()
    {
        _repo.GetByIdAsync(3, Arg.Any<CancellationToken>()).Returns(ExistingRubro());

        await _handler.Handle(new UpdateRubroCommand(Id: 3, Nombre: "Vehiculos"));

        await _repo.Received(1).UpdateAsync(
            Arg.Is<Rubro>(r => r.Nombre == "Vehiculos"),
            Arg.Any<CancellationToken>());
    }

    [Fact]
    public async Task Handle_HappyPath_Rename_CallsAuditLog()
    {
        _repo.GetByIdAsync(3, Arg.Any<CancellationToken>()).Returns(ExistingRubro());

        await _handler.Handle(new UpdateRubroCommand(Id: 3, Nombre: "Vehiculos"));

        await _audit.Received(1).LogAsync(
            action: "rubro.updated",
            targetType: "Rubro",
            targetId: "3",
            metadata: Arg.Any<object?>(),
            ct: Arg.Any<CancellationToken>());
    }

    // ── Not found → RubroNotFoundException ──────────────────────────────────

    [Fact]
    public async Task Handle_NotFound_ThrowsRubroNotFoundException()
    {
        _repo.GetByIdAsync(99, Arg.Any<CancellationToken>()).Returns((Rubro?)null);

        var act = () => _handler.Handle(new UpdateRubroCommand(Id: 99, Nombre: "Cualquiera"));

        await act.Should().ThrowAsync<RubroNotFoundException>()
            .Where(ex => ex.Id == 99);
    }

    // ── Duplicate name CI under same parent → RubroNombreDuplicadoEnPadreException

    [Fact]
    public async Task Handle_DuplicateNameUnderParent_ThrowsRubroNombreDuplicadoEnPadreException()
    {
        _repo.GetByIdAsync(3, Arg.Any<CancellationToken>()).Returns(ExistingRubro());
        _repo.ExistsByNombreUnderParentAsync(null, "Motos", 3, Arg.Any<CancellationToken>())
             .Returns(true);

        var act = () => _handler.Handle(new UpdateRubroCommand(Id: 3, Nombre: "Motos"));

        await act.Should().ThrowAsync<RubroNombreDuplicadoEnPadreException>();
    }

    [Fact]
    public async Task Handle_DuplicateName_DoesNotCallAuditLog()
    {
        _repo.GetByIdAsync(3, Arg.Any<CancellationToken>()).Returns(ExistingRubro());
        _repo.ExistsByNombreUnderParentAsync(Arg.Any<int?>(), Arg.Any<string>(), Arg.Any<int?>(), Arg.Any<CancellationToken>())
             .Returns(true);

        try { await _handler.Handle(new UpdateRubroCommand(Id: 3, Nombre: "Motos")); } catch { }

        await _audit.DidNotReceive().LogAsync(
            Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(),
            Arg.Any<object?>(), Arg.Any<CancellationToken>());
    }
}