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

namespace PnvPanel.Application.Tests.Support;

public class CreateRoleRequestTicketCommandHandlerTests
{
    private readonly IRoleService _roleService = Substitute.For<IRoleService>();
    private readonly IRealtimeNotifier _notifier = Substitute.For<IRealtimeNotifier>();
    private readonly ITelegramNotifier _telegramNotifier = Substitute.For<ITelegramNotifier>();

    [Fact]
    public async Task Handle_ForExistingRole_CreatesTicket()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        var roleId = Guid.NewGuid();
        var currentUser = FakeCurrentUser.Authenticated(userId, "alice");
        _roleService
            .ListRolesAsync(Arg.Any<CancellationToken>())
            .Returns(new List<RoleDto> { new(roleId, "premium", 5, 2, false, false) });

        var handler = new CreateRoleRequestTicketCommandHandler(
            dbContext,
            _roleService,
            _notifier,
            _telegramNotifier,
            currentUser
        );

        var result = await handler.Handle(
            new CreateRoleRequestTicketCommand(roleId, null, null, null, "нужно больше конфигов"),
            CancellationToken.None
        );
        await dbContext.SaveChangesAsync(CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal(roleId, result.Value.RequestedRoleId);
        Assert.Equal("premium", result.Value.RequestedRoleName);
        await _telegramNotifier
            .Received(1)
            .NotifyAdminsRoleRequestCreatedAsync(
                Arg.Any<Guid>(),
                "alice",
                "premium",
                "нужно больше конфигов",
                Arg.Any<CancellationToken>()
            );
    }

    [Fact]
    public async Task Handle_ForAdminRole_ReturnsForbidden()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var roleId = Guid.NewGuid();
        var currentUser = FakeCurrentUser.Authenticated(Guid.NewGuid());
        _roleService
            .ListRolesAsync(Arg.Any<CancellationToken>())
            .Returns(new List<RoleDto> { new(roleId, "admin", -1, -1, true, false) });

        var handler = new CreateRoleRequestTicketCommandHandler(
            dbContext,
            _roleService,
            _notifier,
            _telegramNotifier,
            currentUser
        );

        var result = await handler.Handle(
            new CreateRoleRequestTicketCommand(roleId, null, null, null, "хочу быть админом"),
            CancellationToken.None
        );

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

    [Fact]
    public async Task Handle_ForNewRole_SetsProposedFields()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var currentUser = FakeCurrentUser.Authenticated(Guid.NewGuid(), "bob");

        var handler = new CreateRoleRequestTicketCommandHandler(
            dbContext,
            _roleService,
            _notifier,
            _telegramNotifier,
            currentUser
        );

        var result = await handler.Handle(
            new CreateRoleRequestTicketCommand(null, "custom", 10, 4, "нужна кастомная роль"),
            CancellationToken.None
        );

        Assert.True(result.IsSuccess);
        Assert.Equal("custom", result.Value.ProposedRoleName);
        Assert.Equal(10, result.Value.ProposedMaxConfigs);
        Assert.Equal(4, result.Value.ProposedMaxIpLimit);
    }

    [Fact]
    public async Task Handle_WhenPendingRoleRequestExists_ReturnsConflict()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        dbContext.SupportTickets.Add(SupportTicket.CreateRoleRequestForNewRole(userId, "x", 1, 1));
        await dbContext.SaveChangesAsync(CancellationToken.None);

        var currentUser = FakeCurrentUser.Authenticated(userId);
        var handler = new CreateRoleRequestTicketCommandHandler(
            dbContext,
            _roleService,
            _notifier,
            _telegramNotifier,
            currentUser
        );

        var result = await handler.Handle(
            new CreateRoleRequestTicketCommand(null, "y", 2, 2, "ещё заявка"),
            CancellationToken.None
        );

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