using NSubstitute;
using SIGCM2.Application.Abstractions.Persistence;
using SIGCM2.Application.Audit;
using SIGCM2.Application.Medios.Deactivate;
using SIGCM2.Domain.Entities;
using SIGCM2.Domain.Exceptions;

namespace SIGCM2.Application.Tests.Medios.Deactivate;

public class DeactivateMedioCommandHandlerTests
{
    private readonly IMedioRepository _repo = Substitute.For<IMedioRepository>();
    private readonly IAuditLogger _audit = Substitute.For<IAuditLogger>();
    private readonly DeactivateMedioCommandHandler _handler;

    private static Medio MakeMedio(int id = 1, bool activo = true)
        => new(id, "COD" + id, "Nombre", TipoMedio.Diario, null, activo, DateTime.UtcNow, null);

    public DeactivateMedioCommandHandlerTests()
    {
        _handler = new DeactivateMedioCommandHandler(_repo, _audit, TimeProvider.System);
    }

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

    [Fact]
    public async Task Handle_NotFound_ThrowsMedioNotFoundException()
    {
        _repo.GetByIdAsync(999, Arg.Any<CancellationToken>()).Returns((Medio?)null);

        await Assert.ThrowsAsync<MedioNotFoundException>(
            () => _handler.Handle(new DeactivateMedioCommand(999)));
    }

    // ── idempotent ───────────────────────────────────────────────────────────

    [Fact]
    public async Task Handle_AlreadyInactive_IsIdempotentAndDoesNotCallUpdateAsync()
    {
        _repo.GetByIdAsync(1, Arg.Any<CancellationToken>()).Returns(MakeMedio(1, false));

        await _handler.Handle(new DeactivateMedioCommand(1));

        await _repo.DidNotReceive().UpdateAsync(Arg.Any<Medio>(), Arg.Any<CancellationToken>());
    }

    [Fact]
    public async Task Handle_AlreadyInactive_DoesNotWriteAuditEvent()
    {
        _repo.GetByIdAsync(1, Arg.Any<CancellationToken>()).Returns(MakeMedio(1, false));

        await _handler.Handle(new DeactivateMedioCommand(1));

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

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

    [Fact]
    public async Task Handle_ActiveMedio_CallsUpdateAsyncWithInactiveEntity()
    {
        _repo.GetByIdAsync(1, Arg.Any<CancellationToken>()).Returns(MakeMedio(1, true));

        await _handler.Handle(new DeactivateMedioCommand(1));

        await _repo.Received(1).UpdateAsync(
            Arg.Is<Medio>(m => !m.Activo),
            Arg.Any<CancellationToken>());
    }

    [Fact]
    public async Task Handle_ActiveMedio_WritesAuditWithDeactivateAction()
    {
        _repo.GetByIdAsync(1, Arg.Any<CancellationToken>()).Returns(MakeMedio(1, true));

        await _handler.Handle(new DeactivateMedioCommand(1));

        await _audit.Received(1).LogAsync(
            action: "medio.deactivate",
            targetType: "Medio",
            targetId: "1",
            metadata: Arg.Any<object?>(),
            ct: Arg.Any<CancellationToken>());
    }
}