namespace AcDream.App.Tests.Rendering.Walk;

/// <summary>
/// S3 chunk 1 (§11.2 B2/B3): proves the parts/alpha-depth readers actually
/// parse the five committed OH captures — "imported and parsed", not just
/// compiled. No content is pinned (§11.2 B3: "pinned only where a later
/// chunk/S4 names a consumer — no speculative assertions"); this is the
/// same non-empty/complete-frame shape
/// <c>WalkOracleTraceTests.Fixture_parses_with_complete_frames</c> already
/// applies to the walk logs.
/// </summary>
public sealed class WalkOraclePartsTraceTests
{
    private const string OhRoot = "docs/research/2026-09-01-overhaul/oh-capture";

    public static readonly TheoryData<string> AllPoses = new()
    {
        "holtburg-doorway-still",
        "terrace-edge",
        "cathedral-arrival",
        "foundry-deep",
        "cathedral-leak",
    };

    [Theory]
    [MemberData(nameof(AllPoses))]
    public void Parts_log_parses_with_nonempty_draws(string pose)
    {
        IReadOnlyList<WalkOraclePartsFrame> frames = WalkOraclePartsTrace.Load(OhRoot, pose);

        Assert.NotEmpty(frames);
        Assert.Equal(1, frames[0].Number);
        Assert.Equal(frames.Count, frames[^1].Number);
        Assert.Contains(frames, f => f.PartDraws.Count > 0);
        Assert.Contains(frames, f => f.MeshDraws.Count > 0);
    }

    /// <summary>S3 chunk 1 fix round 1 (G4): besides Flushes (FL) and
    /// DrawCellsSamples (PC), also assert MeshAdds (AM) and PortalPolyDraws
    /// (PM) are non-empty — §6b lists real counts for every committed
    /// capture (e.g. terrace-edge: AM=6880, PM=10), so a regex that
    /// silently stopped matching either kind must fail this test, not pass
    /// it silently.</summary>
    [Theory]
    [MemberData(nameof(AllPoses))]
    public void Alpha_depth_log_parses_with_nonempty_samples(string pose)
    {
        IReadOnlyList<WalkOracleAlphaDepthFrame> frames =
            WalkOracleAlphaDepthTrace.Load(OhRoot, pose);

        Assert.NotEmpty(frames);
        Assert.Equal(1, frames[0].Number);
        Assert.Equal(frames.Count, frames[^1].Number);
        Assert.Contains(frames, f => f.MeshAdds.Count > 0);
        Assert.Contains(frames, f => f.Flushes.Count > 0);
        Assert.Contains(frames, f => f.PortalPolyDraws.Count > 0);
        Assert.Contains(frames, f => f.DrawCellsSamples.Count > 0);
    }
}