using AcDream.Core.Physics;
using DatReaderWriter.Enums;
using System.Collections.Generic;
using System.Numerics;
using Xunit;

namespace AcDream.Core.Tests.Physics;

/// <summary>
/// Tests for the ISSUES #83 H-disambiguation probe spike (spec
/// 2026-05-21-indoor-walk-miss-probe-design.md).
///
/// Covers:
/// 1. PhysicsDiagnostics.ProbeWalkMissEnabled flag get/set roundtrip.
/// 2. WalkMissDiagnostic.AggregateNearestWalkable selects the nearest
///    walkable polygon by |dz| when the foot XY lies inside a poly's
///    local XY bounding box.
/// 3. WalkMissDiagnostic.AggregateNearestWalkable falls back to the
///    nearest poly by |dz| when no walkable poly XY-contains the foot,
///    reporting ContainsFootXY=false.
/// </summary>
public class WalkMissDiagnosticTests
{
    [Fact]
    public void ProbeWalkMiss_StaticApi_Roundtrip()
    {
        bool initial = PhysicsDiagnostics.ProbeWalkMissEnabled;
        try
        {
            PhysicsDiagnostics.ProbeWalkMissEnabled = true;
            Assert.True(PhysicsDiagnostics.ProbeWalkMissEnabled);

            PhysicsDiagnostics.ProbeWalkMissEnabled = false;
            Assert.False(PhysicsDiagnostics.ProbeWalkMissEnabled);
        }
        finally
        {
            PhysicsDiagnostics.ProbeWalkMissEnabled = initial;
        }
    }
}