using UnityEngine;

namespace RootMotion.FinalIK
{
	[ExecuteInEditMode]
	public class EditorIK : MonoBehaviour
	{
		[Tooltip("If slot assigned, will update Animator before IK.")]
		public Animator animator;

		[Tooltip("Create/Final IK/Editor IK Pose")]
		public EditorIKPose defaultPose;

		[HideInInspector]
		public Transform[] bones = new Transform[0];

		public IK ik { get; private set; }

		private void OnEnable()
		{
			if (!Application.isPlaying)
			{
				if (ik == null)
				{
					ik = GetComponent<IK>();
				}
				if (ik == null)
				{
					Debug.LogError("EditorIK needs to have an IK component on the same GameObject.", base.transform);
				}
				else if (bones.Length == 0)
				{
					bones = ik.transform.GetComponentsInChildren<Transform>();
				}
			}
		}

		private void OnDisable()
		{
			if (!Application.isPlaying)
			{
				if (defaultPose != null && defaultPose.poseStored)
				{
					defaultPose.Restore(bones);
				}
				if (ik != null)
				{
					ik.GetIKSolver().executedInEditor = false;
				}
			}
		}

		private void OnDestroy()
		{
			if (!Application.isPlaying && !(ik == null))
			{
				if (bones.Length == 0)
				{
					bones = ik.transform.GetComponentsInChildren<Transform>();
				}
				if (defaultPose != null && defaultPose.poseStored && bones.Length != 0)
				{
					defaultPose.Restore(bones);
				}
				ik.GetIKSolver().executedInEditor = false;
			}
		}

		public void StoreDefaultPose()
		{
			bones = ik.transform.GetComponentsInChildren<Transform>();
			defaultPose.Store(bones);
		}

		public bool Initiate()
		{
			if (defaultPose == null)
			{
				return false;
			}
			if (!defaultPose.poseStored)
			{
				return false;
			}
			if (bones.Length == 0)
			{
				return false;
			}
			if (ik == null)
			{
				ik = GetComponent<IK>();
			}
			if (ik == null)
			{
				Debug.LogError("EditorIK can not find an IK component.", base.transform);
				return false;
			}
			defaultPose.Restore(bones);
			ik.GetIKSolver().executedInEditor = false;
			ik.GetIKSolver().Initiate(ik.transform);
			ik.GetIKSolver().executedInEditor = true;
			return true;
		}

		public void Update()
		{
			if (Application.isPlaying || ik == null || !ik.enabled || !ik.GetIKSolver().executedInEditor)
			{
				return;
			}
			if (bones.Length == 0)
			{
				bones = ik.transform.GetComponentsInChildren<Transform>();
			}
			if (bones.Length == 0 || !defaultPose.Restore(bones))
			{
				return;
			}
			ik.GetIKSolver().executedInEditor = false;
			if (!ik.GetIKSolver().initiated)
			{
				ik.GetIKSolver().Initiate(ik.transform);
			}
			if (ik.GetIKSolver().initiated)
			{
				ik.GetIKSolver().executedInEditor = true;
				if (animator != null && animator.runtimeAnimatorController != null)
				{
					animator.Update(Time.deltaTime);
				}
				ik.GetIKSolver().Update();
			}
		}
	}
}