using System;
using Spine;
using Spine.Unity;
using UnityEngine;
using AnimationState = Spine.AnimationState;

namespace BlueWater.Players
{
    public abstract class SpineController : MonoBehaviour
    {
        // Variables
        #region Variables
        
        // Components
        protected SkeletonAnimation SkeletonAnimation;
        protected AnimationState AnimationState;
        
        #endregion

        // Unity events
        #region Unity events

        private void OnDestroy()
        {
            if (AnimationState != null)
            {
                AnimationState.Start -= OnAnimationStart;
                AnimationState.Complete -= OnAnimationComplete;
            }
        }

        #endregion
        
        // Initialize methods
        #region Initialize methods
        
        public virtual void InitializeComponents(SkeletonAnimation skeletonAnimation)
        {
            if (skeletonAnimation == null)
            {
                Debug.LogError("SkeletonAnimation component is null.");
                return;
            }
            
            SkeletonAnimation = skeletonAnimation;
            AnimationState = SkeletonAnimation.AnimationState;
            
            if (AnimationState != null)
            {
                AnimationState.Complete += OnAnimationComplete;
            }
            else
            {
                Debug.LogError("AnimationState is not initialized.");
            }
        }
        
        #endregion

        // Methods
        #region Methods
        
        public void PlayAnimation(string animationName, bool isLoopActive, float speed = 1f)
        {
            if (SkeletonAnimation == null && AnimationState == null) return;
            
            if (string.IsNullOrEmpty(animationName))
            {
                Debug.LogError($"{animationName}의 애니메이션은 존재하지 않습니다.");
                return;
            }

            AnimationState.TimeScale = speed;
            AnimationState.SetAnimation(0, animationName, isLoopActive);
        }

        public void SetSkin(string skinName)
        {
            if (SkeletonAnimation == null && AnimationState == null) return;
            
            if (string.IsNullOrEmpty(skinName))
            {
                Debug.LogError($"{skinName}의 스킨 이름은 존재하지 않습니다.");
                return;
            }
            
            SkeletonAnimation.Skeleton.SetSkin(skinName);
            SkeletonAnimation.Skeleton.SetSlotsToSetupPose();
            AnimationState.Apply(SkeletonAnimation.Skeleton);
        }
        
        protected abstract void OnAnimationStart(TrackEntry trackEntry);
        protected abstract void OnAnimationComplete(TrackEntry trackEntry);
        
        #endregion
    }
}