using Core.SaveLoad;
using UnityEngine;
using Core;
using AppleHills.Core.Settings;

namespace UI.CardSystem.StateMachine.States
{
    /// <summary>
    /// Dragging state - handles card being dragged for album placement.
    /// Integrates with existing drag/drop system.
    /// </summary>
    public class CardDraggingState : AppleState
    {
        private CardContext _context;
        private ICardSystemSettings _settings;
        private Vector3 _originalScale;
        private Vector3 _dragStartPosition;
        
        private void Awake()
        {
            _context = GetComponentInParent<CardContext>();
            _settings = GameManager.GetSettingsObject<ICardSystemSettings>();
        }
        
        public override void OnEnterState()
        {
            // Store original transform
            _originalScale = _context.RootTransform.localScale;
            _dragStartPosition = _context.RootTransform.position;
            
            // Scale up slightly during drag for visual feedback
            _context.RootTransform.localScale = _originalScale * _settings.DragScale;
            
            Logging.Debug($"[CardDraggingState] Entered drag state for card: {_context.CardData?.Name}");
        }
        
        /// <summary>
        /// Update drag position (called by external drag handler)
        /// </summary>
        public void UpdateDragPosition(Vector3 worldPosition)
        {
            _context.RootTransform.position = worldPosition;
        }
        
        /// <summary>
        /// Called when drag is released and card snaps to slot
        /// </summary>
        public void OnDroppedInSlot()
        {
            _context.StateMachine.ChangeState("PlacedInSlotState");
        }
        
        /// <summary>
        /// Called when drag is released but not over valid slot
        /// </summary>
        public void OnDroppedOutsideSlot()
        {
            // Return to revealed state
            _context.StateMachine.ChangeState("RevealedState");
        }
        
        private void OnDisable()
        {
            // Restore original scale when exiting drag
            if (_context?.RootTransform != null)
            {
                _context.RootTransform.localScale = _originalScale;
            }
        }
    }
}