using TeleWave.Application.Media.Stats;
using TeleWave.Application.Tests.Support;
using TeleWave.Domain.Media;
using Xunit;

namespace TeleWave.Application.Tests.Media;

public class MediaStatsTests
{
    private static MediaAsset Pending(string name) =>
        MediaAsset.Register(name, ".mkv", MediaSource.Upload);

    private static MediaAsset Processing(string name)
    {
        var a = Pending(name);
        a.MarkProcessing();
        return a;
    }

    private static MediaAsset Ready(string name)
    {
        var a = Pending(name);
        a.MarkProcessing();
        a.MarkReady(
            new MediaReadyInfo(TimeSpan.FromMinutes(20), 2, 600, 1920, 1080, "h264", "aac", "assets/x")
        );
        return a;
    }

    [Fact]
    public async Task Stats_CountsQueuedAndProcessing_AndAveragesReady_ExcludingGenerated()
    {
        var fixture = new TestDb();
        await using (var seed = fixture.New())
        {
            seed.MediaAssets.AddRange(
                Pending("a.mkv"),
                Pending("b.mkv"),
                Processing("c.mkv"),
                Ready("d.mkv"),
                MediaAsset.RegisterGenerated("Заставка") // Generated — не входит в статистику
            );
            await seed.SaveChangesAsync(CancellationToken.None);
        }

        await using var db = fixture.New();
        var stats = await new GetMediaStatsQueryHandler(db).Handle(
            new GetMediaStatsQuery(),
            CancellationToken.None
        );

        Assert.Equal(2, stats.Queued); // два Pending (Generated исключён)
        Assert.Equal(1, stats.Processing);
        Assert.NotNull(stats.AverageProcessingSeconds);
        Assert.True(stats.AverageProcessingSeconds >= 0);
    }
}