using NSubstitute;
using PnvPanel.Application.Admin.Inbounds;
using PnvPanel.Application.Common.Interfaces;
using PnvPanel.Application.Tests.TestSupport;
using PnvPanel.Domain.Configs;
using PnvPanel.Domain.Inbounds;
using Xunit;

namespace PnvPanel.Application.Tests.Admin.Inbounds;

public class DeleteInboundCommandHandlerTests
{
    private readonly IRealtimeNotifier _notifier = Substitute.For<IRealtimeNotifier>();
    private readonly ICurrentUser _currentUser = Substitute.For<ICurrentUser>();

    private DeleteInboundCommandHandler CreateHandler(IAppDbContext dbContext) =>
        new(dbContext, _notifier, _currentUser);

    [Fact]
    public async Task Handle_WhenInboundNotFound_ReturnsNotFound()
    {
        using var dbContext = InMemoryDbContextFactory.Create();

        var result = await CreateHandler(dbContext)
            .Handle(new DeleteInboundCommand(Guid.NewGuid()), CancellationToken.None);

        Assert.False(result.IsSuccess);
        Assert.Equal(InboundErrors.NotFound, result.Error);
    }

    [Fact]
    public async Task Handle_WhenInboundStillAvailable_ReturnsStillAvailable()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var inbound = Inbound.FromRemote(Guid.NewGuid(), "1", VpnProtocol.Vless, "remark", 443);
        dbContext.Inbounds.Add(inbound);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        var result = await CreateHandler(dbContext)
            .Handle(new DeleteInboundCommand(inbound.Id), CancellationToken.None);

        Assert.False(result.IsSuccess);
        Assert.Equal(InboundErrors.StillAvailable, result.Error);
        Assert.NotNull(await dbContext.Inbounds.FindAsync([inbound.Id], CancellationToken.None));
    }

    [Fact]
    public async Task Handle_WhenUnavailable_RevokesActiveConfigsAndDeletesInbound()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var inbound = Inbound.FromRemote(Guid.NewGuid(), "1", VpnProtocol.Vless, "remark", 443);
        inbound.MarkUnavailable();

        var userId = Guid.NewGuid();
        var activeConfig = VpnConfig.Create(userId, inbound.Id, VpnProtocol.Vless, null);
        var alreadyRevoked = VpnConfig.Create(userId, inbound.Id, VpnProtocol.Vless, null);
        alreadyRevoked.Revoke();

        dbContext.Inbounds.Add(inbound);
        dbContext.VpnConfigs.AddRange(activeConfig, alreadyRevoked);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        var result = await CreateHandler(dbContext)
            .Handle(new DeleteInboundCommand(inbound.Id), CancellationToken.None);
        // UnitOfWorkBehavior делает это в реальном пайплайне — здесь хендлер вызывается напрямую.
        await dbContext.SaveChangesAsync(CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal(ConfigStatus.Revoked, activeConfig.Status);
        Assert.Null(await dbContext.Inbounds.FindAsync([inbound.Id], CancellationToken.None));
        await _notifier
            .Received(1)
            .NotifyConfigStatusChangedAsync(
                userId,
                activeConfig.Id,
                ConfigStatus.Revoked,
                Arg.Any<CancellationToken>()
            );
        await _notifier
            .DidNotReceive()
            .NotifyConfigStatusChangedAsync(
                userId,
                alreadyRevoked.Id,
                Arg.Any<ConfigStatus>(),
                Arg.Any<CancellationToken>()
            );
    }
}