using Core.SaveLoad;
using Pixelplacement.TweenSystem;
using UnityEngine;
using UnityEngine.EventSystems;

namespace UI.CardSystem.StateMachine.States
{
    /// <summary>
    /// Idle state - card back is showing with gentle hover animation.
    /// Waiting for click to flip and reveal.
    /// Based on FlippableCard's idle behavior.
    /// </summary>
    public class CardIdleState : AppleState, IPointerClickHandler, IPointerEnterHandler, IPointerExitHandler
    {
        [Header("State-Owned Visuals")]
        [SerializeField] private GameObject cardBackVisual;
        
        [Header("Idle Hover Settings")]
        [SerializeField] private bool enableIdleHover = true;
        [SerializeField] private float idleHoverHeight = 10f;
        [SerializeField] private float idleHoverDuration = 1.5f;
        [SerializeField] private float hoverScaleMultiplier = 1.05f;
        
        private CardContext _context;
        private TweenBase _idleHoverTween;
        private Vector2 _originalPosition;
        
        private void Awake()
        {
            _context = GetComponentInParent<CardContext>();
        }
        
        public override void OnEnterState()
        {
            // Show card back, hide card front
            if (cardBackVisual != null)
            {
                cardBackVisual.SetActive(true);
                // Ensure card back is at 0° rotation (facing camera)
                cardBackVisual.transform.localRotation = Quaternion.Euler(0, 0, 0);
            }
            
            if (_context.CardDisplay != null)
            {
                _context.CardDisplay.gameObject.SetActive(false);
                // Ensure card front starts at 180° rotation (flipped away)
                _context.CardDisplay.transform.localRotation = Quaternion.Euler(0, 180, 0);
            }
            
            // Save original position for hover animation
            RectTransform rectTransform = _context.RootTransform.GetComponent<RectTransform>();
            if (rectTransform != null)
            {
                _originalPosition = rectTransform.anchoredPosition;
            }
            
            // Start idle hover animation
            if (enableIdleHover && _context.Animator != null)
            {
                _idleHoverTween = _context.Animator.StartIdleHover(idleHoverHeight, idleHoverDuration);
            }
        }
        
        public void OnPointerEnter(PointerEventData eventData)
        {
            // Scale up slightly on hover
            if (_context.Animator != null)
            {
                _context.Animator.AnimateScale(Vector3.one * hoverScaleMultiplier, 0.2f);
            }
        }
        
        public void OnPointerExit(PointerEventData eventData)
        {
            // Scale back to normal
            if (_context.Animator != null)
            {
                _context.Animator.AnimateScale(Vector3.one, 0.2f);
            }
        }
        
        public void OnPointerClick(PointerEventData eventData)
        {
            // Click to flip - transition to flipping state
            _context.StateMachine.ChangeState("FlippingState");
        }
        
        private void OnDisable()
        {
            // Stop idle hover animation when leaving state
            if (_idleHoverTween != null)
            {
                _idleHoverTween.Stop();
                _idleHoverTween = null;
                
                // Return to original position
                RectTransform rectTransform = _context.RootTransform.GetComponent<RectTransform>();
                if (rectTransform != null && _context.Animator != null)
                {
                    _context.Animator.AnimateAnchoredPosition(_originalPosition, 0.3f);
                }
            }
            
            // Reset scale
            if (_context.Animator != null)
            {
                _context.Animator.AnimateScale(Vector3.one, 0.2f);
            }
            
            // Hide card back when leaving state
            if (cardBackVisual != null)
            {
                cardBackVisual.SetActive(false);
            }
        }
    }
}