using System.Reflection;
using ErsatzTV.Application.LibraryBrowse;
using ErsatzTV.Controllers.Api;
using ErsatzTV.Core.Api.LibraryBrowse;
using ErsatzTV.Core.Domain;
using MediatR;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Routing;
using NSubstitute;
using NUnit.Framework;
using Shouldly;

namespace ErsatzTV.Tests.Controllers;

[TestFixture]
public class LibraryBrowseControllerTests
{
    private LibraryBrowseController _controller = null!;
    private IMediator _mediator = null!;

    [SetUp]
    public void SetUp()
    {
        _mediator = Substitute.For<IMediator>();
        _controller = new LibraryBrowseController(_mediator);
    }

    [Test]
    public void Controller_Should_Expose_Browse_Route_With_Stable_Operation_Name()
    {
        MethodInfo action = typeof(LibraryBrowseController).GetMethod(nameof(LibraryBrowseController.Browse))
            ?? throw new AssertionException($"Missing action {nameof(LibraryBrowseController.Browse)}");

        var attribute = action.GetCustomAttributes<HttpGetAttribute>().Single();
        attribute.Template.ShouldBe("/api/library/browse");
        attribute.Name.ShouldBe("BrowseLibrary");
    }

    [Test]
    public async Task Browse_Should_Clamp_Paging_And_Send_Query()
    {
        _mediator.Send(Arg.Any<GetLibraryBrowseItems>(), Arg.Any<CancellationToken>())
            .Returns(new PagedLibraryBrowseItemsResponseModel(0, []));

        await _controller.Browse(
            "star",
            123,
            LibraryBrowseMediaType.Movie,
            -1,
            500,
            77,
            CancellationToken.None);

        await _mediator.Received(1).Send(
            Arg.Is<GetLibraryBrowseItems>(q =>
                q.Query == "star" &&
                q.LibraryId == 123 &&
                q.MediaType == LibraryBrowseMediaType.Movie &&
                q.PageNum == 0 &&
                q.PageSize == 100 &&
                q.ParentId == 77),
            Arg.Any<CancellationToken>());
    }

    [Test]
    public async Task Browse_Should_Return_Paged_Response()
    {
        var item = new LibraryBrowseItemResponseModel(
            10,
            LibraryBrowseMediaType.Movie,
            "Movie",
            3,
            "Movies",
            "/artwork/posters/movie.jpg",
            TimeSpan.FromMinutes(90),
            1,
            null,
            CollectionType.Movie,
            null,
            null,
            null,
            null,
            10,
            null);
        _mediator.Send(Arg.Any<GetLibraryBrowseItems>(), Arg.Any<CancellationToken>())
            .Returns(new PagedLibraryBrowseItemsResponseModel(1, [item]));

        PagedLibraryBrowseItemsResponseModel result = await _controller.Browse(
            cancellationToken: CancellationToken.None);

        result.TotalCount.ShouldBe(1);
        result.Page.ShouldBe([item]);
    }
}