using ErrorOr;
using Musify.Application.Tests.TestSupport;
using Musify.Application.Tracks;
using Musify.Application.Tracks.Responses;
using Xunit;

namespace Musify.Application.Tests.Tracks;

public sealed class GetTrackByIdQueryHandlerTests : HandlerTestBase
{
    private GetTrackByIdQueryHandler CreateHandler() => new(Database);

    [Fact]
    public async Task Handle_LocalTrack_ReturnsItWithOwnerAsArtist()
    {
        var owner = TestEntities.User(1, "artist-name");
        var track = TestEntities.Track(owner, "My Song");
        await SeedAsync(owner, track);

        var result = await CreateHandler().Handle(new GetTrackByIdQuery(track.Id), TestContext.Current.CancellationToken);

        Assert.False(result.IsError);
        Assert.Equal("My Song", result.Value.Title);
        Assert.Equal(owner.Name, result.Value.Artist);
        var localResponse = Assert.IsType<TrackApplicationResponse>(result.Value);
        Assert.Equal(owner.Id, localResponse.OwnerUserId);
    }

    [Fact]
    public async Task Handle_TrackMissing_ReturnsNotFound()
    {
        var result = await CreateHandler().Handle(new GetTrackByIdQuery(Guid.NewGuid()), TestContext.Current.CancellationToken);

        Assert.Equal(ErrorType.NotFound, result.FirstError.Type);
    }

    [Fact]
    public async Task Handle_ListensCount_OnlyCountsCountedListens()
    {
        var owner = TestEntities.User();
        var track = TestEntities.Track(owner);
        await SeedAsync(
            owner, track,
            TestEntities.ListeningHistory(owner.Id, track.Id, playedSeconds: 100),
            TestEntities.ListeningHistory(owner.Id, track.Id, playedSeconds: 100),
            TestEntities.ListeningHistory(owner.Id, track.Id, playedSeconds: 1, isCounted: false));

        var result = await CreateHandler().Handle(new GetTrackByIdQuery(track.Id), TestContext.Current.CancellationToken);

        Assert.Equal(2, result.Value.ListensCount);
    }
}