using NSubstitute;
using PnvPanel.Application.Billing;
using PnvPanel.Application.Common.Interfaces;
using PnvPanel.Application.Support;
using PnvPanel.Application.Support.CreateExtensionRequest;
using PnvPanel.Application.Tests.TestSupport;
using PnvPanel.Domain.Support;
using Xunit;

namespace PnvPanel.Application.Tests.Support;

public class CreateExtensionRequestTicketCommandHandlerTests
{
    private readonly IIdentityService _identityService = Substitute.For<IIdentityService>();
    private readonly IRealtimeNotifier _notifier = Substitute.For<IRealtimeNotifier>();
    private readonly ITelegramNotifier _telegramNotifier = Substitute.For<ITelegramNotifier>();

    private static CurrentUserProfile Profile(Guid userId, bool billingEnabled) =>
        new(
            userId,
            "alice",
            Guid.NewGuid(),
            "premium",
            IsActivated: true,
            IsBlocked: false,
            ConfigQuota: 5,
            PlanId: null,
            MaxIpLimit: 3,
            SubscriptionToken: "sub-token",
            BillingEnabled: billingEnabled,
            BillingPaidUntil: null,
            BillingSuspended: false
        );

    [Fact]
    public async Task Handle_WhenBillingEnabled_CreatesTicketAndNotifiesAdmins()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        _identityService
            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
            .Returns(Profile(userId, billingEnabled: true));

        var handler = new CreateExtensionRequestTicketCommandHandler(
            dbContext,
            _identityService,
            _notifier,
            _telegramNotifier,
            FakeCurrentUser.Authenticated(userId, "alice")
        );

        var result = await handler.Handle(
            new CreateExtensionRequestTicketCommand(14, "нужно продлить"),
            CancellationToken.None
        );

        Assert.True(result.IsSuccess);
        Assert.Equal(TicketType.ExtensionRequest, result.Value.Type);
        Assert.Equal(14, result.Value.RequestedDays);
        await _telegramNotifier
            .Received(1)
            .NotifyAdminsExtensionRequestCreatedAsync(
                Arg.Any<Guid>(),
                "alice",
                14,
                "нужно продлить",
                Arg.Any<CancellationToken>()
            );
    }

    [Fact]
    public async Task Handle_WhenBillingNotEnabled_ReturnsNotEnabled()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        _identityService
            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
            .Returns(Profile(userId, billingEnabled: false));

        var handler = new CreateExtensionRequestTicketCommandHandler(
            dbContext,
            _identityService,
            _notifier,
            _telegramNotifier,
            FakeCurrentUser.Authenticated(userId)
        );

        var result = await handler.Handle(
            new CreateExtensionRequestTicketCommand(14, "нужно продлить"),
            CancellationToken.None
        );

        Assert.False(result.IsSuccess);
        Assert.Equal(BillingErrors.NotEnabled, result.Error);
    }

    [Fact]
    public async Task Handle_WhenPendingExtensionRequestExists_ReturnsConflict()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        dbContext.SupportTickets.Add(SupportTicket.CreateExtensionRequest(userId, 7));
        await dbContext.SaveChangesAsync(CancellationToken.None);

        _identityService
            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
            .Returns(Profile(userId, billingEnabled: true));

        var handler = new CreateExtensionRequestTicketCommandHandler(
            dbContext,
            _identityService,
            _notifier,
            _telegramNotifier,
            FakeCurrentUser.Authenticated(userId)
        );

        var result = await handler.Handle(
            new CreateExtensionRequestTicketCommand(3, "ещё заявка"),
            CancellationToken.None
        );

        Assert.False(result.IsSuccess);
        Assert.Equal(SupportErrors.ExtensionRequestAlreadyPending, result.Error);
    }
}