using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using BITKit;
using UnityEngine.Animations;
using UnityEngine.UIElements;
#if UNITY_EDITOR
using UnityEditor;
using UnityEditor.UIElements;
#endif
namespace BITKit.Animations
{
    public class UnityAnimatorStateInfo : StateMachineBehaviour
    {
        [SerializeReference, SubclassSelector] private References stateName;
        [SerializeReference,SubclassSelector] private IReference[] variableNames;
        public IAnimator animator;
        private int _index;
        public float duration;
        [SerializeReference, SubclassSelector] private References[] variables;

        public string StateName
        {
            get
            {
                try
                {
                    return stateName;
                }
                catch (Exception e)
                {
                    BIT4Log.Warning<UnityAnimatorStateInfo>(this);
                    throw;
                }
            }
        }
        public string[] VariableNames => variableNames.Select(x=>x.Get()).ToArray();
        public  string[] VariableAnimationNames => variables.Select(x=>x.Get()).ToArray();
        public override void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
        {
            _index = layerIndex;
            EnsureCreation(animator);
            try
            {
                this.animator?.OnStateEnter(layerIndex, stateName);
            }
            catch (Exception e)
            {
                Debug.LogWarning(animator.name);
                Console.WriteLine(e);
                throw;
            }
           
        }
        public override void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
        {
            EnsureCreation(animator);
            this.animator?.OnStateExit(layerIndex, stateName);
        }
        public override void OnStateMachineEnter(Animator animator, int stateMachinePathHash)
        {
            EnsureCreation(animator);
            this.animator?.OnStateEnter(_index, stateName);
        }
        public override void OnStateMachineExit(Animator animator, int stateMachinePathHash)
        {
            EnsureCreation(animator);
            this.animator?.OnStateExit(_index, stateName);
        }

        public void Play()
        {
            if (duration is 0)
            {
                animator.Play(stateName);
            }
            else
            {
                animator.CrossFade(stateName, duration, _index);
            }
        }
        void EnsureCreation(Animator animator)
        {
            if (this.animator is null)
            {
                this.animator = animator.GetComponent<IAnimator>();
            }
        }
    }
    /* #if UNITY_EDITOR
        [CustomEditor(typeof(UnityAnimatorStateInfo))]
        public class UnityAnimatorStateInfoInspector : BITInspector<UnityAnimatorStateInfo>
        {
            public override VisualElement CreateInspectorGUI()
            {
                var stateName = root.Create<PropertyField>();
                return root;
            }
        }
    #endif */
}