using AppleHills.Data.CardSystem;
using UI.DragAndDrop.Core;
using UnityEngine;

namespace UI.CardSystem.DragDrop
{
    /// <summary>
    /// Visual representation for CardDraggable.
    /// Uses the existing CardDisplay component to render the card.
    /// </summary>
    public class CardDraggableVisual : DraggableVisual
    {
        [Header("Card Visual Components")]
        [SerializeField] private CardDisplay cardDisplay;
        [SerializeField] private Transform shadowTransform;
        [SerializeField] private float shadowOffset = 20f;
        
        private Vector3 _shadowInitialPosition;
        private CardDraggable _cardDraggable;
        
        public CardDisplay CardDisplay => cardDisplay;
        
        public override void Initialize(DraggableObject parent)
        {
            base.Initialize(parent);
            
            _cardDraggable = parent as CardDraggable;
            
            // Get CardDisplay component if not assigned
            if (cardDisplay == null)
            {
                cardDisplay = GetComponentInChildren<CardDisplay>();
            }
            
            // Initialize shadow
            if (shadowTransform != null)
            {
                _shadowInitialPosition = shadowTransform.localPosition;
            }
            
            // Subscribe to card data changes
            if (_cardDraggable != null)
            {
                _cardDraggable.OnCardDataChanged += HandleCardDataChanged;
                
                // Initial card setup
                if (_cardDraggable.CardData != null && cardDisplay != null)
                {
                    cardDisplay.SetupCard(_cardDraggable.CardData);
                }
            }
        }
        
        protected override void UpdateVisualContent()
        {
            // CardDisplay handles its own rendering, no need to update every frame
            // This is called every frame but we only update when card data changes
        }
        
        /// <summary>
        /// Refresh the card display with current data
        /// </summary>
        public void RefreshCardDisplay()
        {
            if (cardDisplay != null && _cardDraggable != null && _cardDraggable.CardData != null)
            {
                cardDisplay.SetupCard(_cardDraggable.CardData);
            }
        }
        
        private void HandleCardDataChanged(CardDraggable draggable, CardData data)
        {
            RefreshCardDisplay();
        }
        
        protected override void OnPointerDownVisual()
        {
            base.OnPointerDownVisual();
            
            // Move shadow down when pressed
            if (shadowTransform != null)
            {
                shadowTransform.localPosition = _shadowInitialPosition + (-Vector3.up * shadowOffset);
            }
        }
        
        protected override void OnPointerUpVisual(bool longPress)
        {
            base.OnPointerUpVisual(longPress);
            
            // Restore shadow position
            if (shadowTransform != null)
            {
                shadowTransform.localPosition = _shadowInitialPosition;
            }
        }
        
        protected override void OnDragStartedVisual()
        {
            base.OnDragStartedVisual();
            // Card-specific visual effects when dragging starts
        }
        
        protected override void OnDragEndedVisual()
        {
            base.OnDragEndedVisual();
            // Card-specific visual effects when dragging ends
        }

        protected override void OnDestroy()
        {
            base.OnDestroy();
            
            if (_cardDraggable != null)
            {
                _cardDraggable.OnCardDataChanged -= HandleCardDataChanged;
            }
        }
    }
}