using NSubstitute;
using SIGCM2.Application.Abstractions.Persistence;
using SIGCM2.Application.Audit;
using SIGCM2.Application.PuntosDeVenta.Create;
using SIGCM2.Domain.Entities;
using SIGCM2.Domain.Exceptions;

namespace SIGCM2.Application.Tests.PuntosDeVenta.Create;

public class CreatePuntoDeVentaCommandHandlerTests
{
    private readonly IPuntoDeVentaRepository _repo = Substitute.For<IPuntoDeVentaRepository>();
    private readonly IMedioRepository _medioRepo = Substitute.For<IMedioRepository>();
    private readonly IAuditLogger _audit = Substitute.For<IAuditLogger>();
    private readonly CreatePuntoDeVentaCommandHandler _handler;

    private static Medio MakeMedio(int id = 5, bool activo = true)
        => new(id, "COD" + id, "Medio " + id, TipoMedio.Diario, null, activo, DateTime.UtcNow, null);

    private static CreatePuntoDeVentaCommand ValidCommand() => new(
        MedioId: 5,
        NumeroAFIP: 1,
        Nombre: "PdV Central",
        Descripcion: null);

    public CreatePuntoDeVentaCommandHandlerTests()
    {
        _handler = new CreatePuntoDeVentaCommandHandler(_repo, _medioRepo, _audit);
        _medioRepo.GetByIdAsync(5, Arg.Any<CancellationToken>()).Returns(MakeMedio(5));
        _repo.ExistsByNumeroAFIPInMedioAsync(Arg.Any<int>(), Arg.Any<short>(), Arg.Any<int?>(), Arg.Any<CancellationToken>()).Returns(false);
        _repo.AddAsync(Arg.Any<PuntoDeVenta>(), Arg.Any<CancellationToken>()).Returns(10);
    }

    // ── medio not found → throws ─────────────────────────────────────────────

    [Fact]
    public async Task Handle_MedioNotFound_ThrowsMedioNotFoundException()
    {
        _medioRepo.GetByIdAsync(5, Arg.Any<CancellationToken>()).Returns((Medio?)null);

        await Assert.ThrowsAsync<MedioNotFoundException>(
            () => _handler.Handle(ValidCommand()));
    }

    // ── medio inactivo → throws ──────────────────────────────────────────────

    [Fact]
    public async Task Handle_MedioInactivo_ThrowsMedioInactivoException()
    {
        _medioRepo.GetByIdAsync(5, Arg.Any<CancellationToken>()).Returns(MakeMedio(5, false));

        await Assert.ThrowsAsync<MedioInactivoException>(
            () => _handler.Handle(ValidCommand()));
    }

    // ── NumeroAFIP duplicado → throws ────────────────────────────────────────

    [Fact]
    public async Task Handle_NumeroAFIPDuplicado_ThrowsNumeroAFIPDuplicadoException()
    {
        _repo.ExistsByNumeroAFIPInMedioAsync(5, 1, null, Arg.Any<CancellationToken>()).Returns(true);

        await Assert.ThrowsAsync<NumeroAFIPDuplicadoException>(
            () => _handler.Handle(ValidCommand()));
    }

    [Fact]
    public async Task Handle_NumeroAFIPDuplicado_DoesNotCallAddAsync()
    {
        _repo.ExistsByNumeroAFIPInMedioAsync(Arg.Any<int>(), Arg.Any<short>(), Arg.Any<int?>(), Arg.Any<CancellationToken>()).Returns(true);

        try { await _handler.Handle(ValidCommand()); } catch (NumeroAFIPDuplicadoException) { }

        await _repo.DidNotReceive().AddAsync(Arg.Any<PuntoDeVenta>(), Arg.Any<CancellationToken>());
    }

    // ── happy path ───────────────────────────────────────────────────────────

    [Fact]
    public async Task Handle_HappyPath_ReturnsDtoWithIdFromRepository()
    {
        var result = await _handler.Handle(ValidCommand());

        Assert.Equal(10, result.Id);
    }

    [Fact]
    public async Task Handle_HappyPath_DtoContainsCorrectFields()
    {
        var result = await _handler.Handle(ValidCommand());

        Assert.Equal(5, result.MedioId);
        Assert.Equal(1, result.NumeroAFIP);
        Assert.Equal("PdV Central", result.Nombre);
        Assert.True(result.Activo);
    }

    [Fact]
    public async Task Handle_HappyPath_CallsAuditWithCreateAction()
    {
        await _handler.Handle(ValidCommand());

        await _audit.Received(1).LogAsync(
            action: "punto_de_venta.create",
            targetType: "PuntoDeVenta",
            targetId: "10",
            metadata: Arg.Any<object?>(),
            ct: Arg.Any<CancellationToken>());
    }

    // ── audit fail-closed ────────────────────────────────────────────────────

    [Fact]
    public async Task Handle_AuditLoggerThrows_ExceptionBubblesUpAndAddNotCommitted()
    {
        _audit.LogAsync(Arg.Any<string>(), Arg.Any<string>(), Arg.Any<string>(), Arg.Any<object?>(), Arg.Any<CancellationToken>())
              .Returns(Task.FromException(new InvalidOperationException("audit fail")));

        await Assert.ThrowsAsync<InvalidOperationException>(
            () => _handler.Handle(ValidCommand()));
    }
}