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

namespace PnvPanel.Application.Tests.Support;

public class AddTicketCommentCommandHandlerTests
{
    private readonly IIdentityService _identityService = Substitute.For<IIdentityService>();
    private readonly IFileStorage _fileStorage = Substitute.For<IFileStorage>();
    private readonly IRealtimeNotifier _notifier = Substitute.For<IRealtimeNotifier>();

    private static CurrentUserProfile Profile(Guid userId, string role) =>
        new(
            userId,
            "user",
            Guid.NewGuid(),
            role,
            IsActivated: true,
            IsBlocked: false,
            MaxConfigs: 3,
            MaxIpLimit: RoleQuota.Unlimited,
            SubscriptionToken: "token",
            BillingEnabled: false,
            BillingPaidUntil: null,
            BillingSuspended: false
        );

    [Fact]
    public async Task Handle_WhenOwnerComments_AddsCommentAndDoesNotNotifySelf()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        var ticket = SupportTicket.CreateBugReport(userId);
        dbContext.SupportTickets.Add(ticket);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        _identityService
            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
            .Returns(Profile(userId, "user"));
        var currentUser = FakeCurrentUser.Authenticated(userId, "alice");

        var handler = new AddTicketCommentCommandHandler(
            dbContext,
            _identityService,
            _fileStorage,
            _notifier,
            currentUser
        );

        var result = await handler.Handle(
            new AddTicketCommentCommand(ticket.Id, "апдейт", []),
            CancellationToken.None
        );

        Assert.True(result.IsSuccess);
        Assert.Equal("апдейт", result.Value.Body);
        await _notifier
            .DidNotReceive()
            .NotifyTicketUpdatedAsync(
                Arg.Any<Guid>(),
                Arg.Any<Guid>(),
                Arg.Any<CancellationToken>()
            );
    }

    [Fact]
    public async Task Handle_WhenAdminComments_NotifiesOwner()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var ownerId = Guid.NewGuid();
        var adminId = Guid.NewGuid();
        var ticket = SupportTicket.CreateBugReport(ownerId);
        dbContext.SupportTickets.Add(ticket);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        _identityService
            .GetProfileAsync(adminId, Arg.Any<CancellationToken>())
            .Returns(Profile(adminId, "admin"));
        var currentUser = FakeCurrentUser.Authenticated(adminId, "admin");

        var handler = new AddTicketCommentCommandHandler(
            dbContext,
            _identityService,
            _fileStorage,
            _notifier,
            currentUser
        );

        var result = await handler.Handle(
            new AddTicketCommentCommand(ticket.Id, "ответ админа", []),
            CancellationToken.None
        );

        Assert.True(result.IsSuccess);
        await _notifier
            .Received(1)
            .NotifyTicketUpdatedAsync(ticket.Id, ownerId, Arg.Any<CancellationToken>());
    }

    [Fact]
    public async Task Handle_WhenNotOwnerAndNotAdmin_ReturnsNotFound()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var ownerId = Guid.NewGuid();
        var strangerId = Guid.NewGuid();
        var ticket = SupportTicket.CreateBugReport(ownerId);
        dbContext.SupportTickets.Add(ticket);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        _identityService
            .GetProfileAsync(strangerId, Arg.Any<CancellationToken>())
            .Returns(Profile(strangerId, "user"));
        var currentUser = FakeCurrentUser.Authenticated(strangerId);

        var handler = new AddTicketCommentCommandHandler(
            dbContext,
            _identityService,
            _fileStorage,
            _notifier,
            currentUser
        );

        var result = await handler.Handle(
            new AddTicketCommentCommand(ticket.Id, "текст", []),
            CancellationToken.None
        );

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

    [Fact]
    public async Task Handle_WhenTicketClosed_ReturnsTicketClosedError()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();
        var ticket = SupportTicket.CreateBugReport(userId);
        ticket.Close();
        dbContext.SupportTickets.Add(ticket);
        await dbContext.SaveChangesAsync(CancellationToken.None);

        _identityService
            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
            .Returns(Profile(userId, "user"));
        var currentUser = FakeCurrentUser.Authenticated(userId);

        var handler = new AddTicketCommentCommandHandler(
            dbContext,
            _identityService,
            _fileStorage,
            _notifier,
            currentUser
        );

        var result = await handler.Handle(
            new AddTicketCommentCommand(ticket.Id, "текст", []),
            CancellationToken.None
        );

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