using UnityEditor;
using UnityEngine;
using Rokid.UXR.Interaction;
namespace Rokid.UXR.Editor
{
    [CustomEditor(typeof(PokeInteractable))]
    public class PokeInteractableEditor : UnityEditor.Editor
    {
        private PokeInteractable _interactable;

        private SerializedProperty _proximityFieldProperty;
        private SerializedProperty _surfaceProperty;

        private static readonly float DRAW_RADIUS = 0.02f;

        private void Awake()
        {
            _interactable = target as PokeInteractable;

            _proximityFieldProperty = serializedObject.FindProperty("_proximityField");
            _surfaceProperty = serializedObject.FindProperty("_surface");
        }

        public void OnSceneGUI()
        {
            Handles.color = EditorConstants.PRIMARY_COLOR;
            PlaneSurface plane = _surfaceProperty.objectReferenceValue as PlaneSurface;

            if (plane == null)
            {
                // TODO support non-planar surfaces for this gizmo?
                return;
            }

            Transform triggerPlaneTransform = plane.transform;
            IProximityField proximityField = _proximityFieldProperty.objectReferenceValue as IProximityField;

            if (triggerPlaneTransform == null
                || proximityField == null)
            {
                return;
            }

            Vector3 touchPoint = triggerPlaneTransform.position - triggerPlaneTransform.forward * _interactable.MaxDistance;
            Vector3 proximalPoint = proximityField.ComputeClosestPoint(touchPoint);

            Handles.DrawSolidDisc(touchPoint, triggerPlaneTransform.forward, DRAW_RADIUS);

#if UNITY_2020_2_OR_NEWER
            Handles.DrawLine(touchPoint, proximalPoint, EditorConstants.LINE_THICKNESS);

            Handles.DrawLine(proximalPoint - triggerPlaneTransform.right * DRAW_RADIUS,
                proximalPoint + triggerPlaneTransform.right * DRAW_RADIUS, EditorConstants.LINE_THICKNESS);
            Handles.DrawLine(proximalPoint - triggerPlaneTransform.up * DRAW_RADIUS,
                proximalPoint + triggerPlaneTransform.up * DRAW_RADIUS, EditorConstants.LINE_THICKNESS);
#else
	            Handles.DrawLine(touchPoint, proximalPoint);
	
	            Handles.DrawLine(proximalPoint - triggerPlaneTransform.right * DRAW_RADIUS,
	                proximalPoint + triggerPlaneTransform.right * DRAW_RADIUS);
	            Handles.DrawLine(proximalPoint - triggerPlaneTransform.up * DRAW_RADIUS,
	                proximalPoint + triggerPlaneTransform.up * DRAW_RADIUS);
#endif
        }
    }
}