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

namespace PnvPanel.Application.Tests.Admin.Maintenance;

public class DeleteClosedTicketsCommandHandlerTests
{
    private readonly IFileStorage _fileStorage = Substitute.For<IFileStorage>();

    [Fact]
    public async Task Handle_DeletesClosedTicketsWithCommentsAndAttachments_KeepsOthers()
    {
        using var dbContext = InMemoryDbContextFactory.Create();
        var userId = Guid.NewGuid();

        var closedTicket = SupportTicket.CreateBugReport(userId);
        closedTicket.Close();
        var openTicket = SupportTicket.CreateBugReport(userId);
        dbContext.SupportTickets.AddRange(closedTicket, openTicket);

        var closedComment = TicketComment.Create(
            closedTicket.Id,
            userId,
            "закрытый тикет, есть скриншот"
        );
        var openComment = TicketComment.Create(openTicket.Id, userId, "открытый тикет");
        dbContext.TicketComments.AddRange(closedComment, openComment);

        var attachment = TicketAttachment.Create(
            closedComment.Id,
            "screenshot.png",
            "stored-name",
            "image/png",
            1024
        );
        dbContext.TicketAttachments.Add(attachment);

        await dbContext.SaveChangesAsync(CancellationToken.None);

        var currentUser = FakeCurrentUser.Authenticated(Guid.NewGuid(), "admin");
        var handler = new DeleteClosedTicketsCommandHandler(dbContext, _fileStorage, currentUser);

        var result = await handler.Handle(new DeleteClosedTicketsCommand(), CancellationToken.None);
        // Хендлер не коммитит сам (в проде это делает UnitOfWorkBehavior после диспетчера) — коммитим явно.
        await dbContext.SaveChangesAsync(CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal(1, result.Value);

        Assert.False(dbContext.SupportTickets.Any(t => t.Id == closedTicket.Id));
        Assert.False(dbContext.TicketComments.Any(c => c.Id == closedComment.Id));
        Assert.False(dbContext.TicketAttachments.Any(a => a.Id == attachment.Id));

        Assert.True(dbContext.SupportTickets.Any(t => t.Id == openTicket.Id));
        Assert.True(dbContext.TicketComments.Any(c => c.Id == openComment.Id));

        await _fileStorage.Received(1).DeleteAsync("stored-name", Arg.Any<CancellationToken>());
    }

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

        var currentUser = FakeCurrentUser.Authenticated(Guid.NewGuid(), "admin");
        var handler = new DeleteClosedTicketsCommandHandler(dbContext, _fileStorage, currentUser);

        var result = await handler.Handle(new DeleteClosedTicketsCommand(), CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal(0, result.Value);
        Assert.True(dbContext.SupportTickets.Any(t => t.Id == openTicket.Id));
        await _fileStorage
            .DidNotReceive()
            .DeleteAsync(Arg.Any<string>(), Arg.Any<CancellationToken>());
    }
}