using System;
using System.Collections;
using AppleHills.Data.CardSystem;
using Data.CardSystem;
using Pixelplacement;
using UI.DragAndDrop.Core;
using UnityEngine;

namespace UI.CardSystem
{
    /// <summary>
    /// Draggable card for album reveal system.
    /// Handles both tap and drag-hold interactions for revealing cards.
    /// Auto-snaps to matching album slot on release/tap.
    /// </summary>
    public class AlbumCardPlacementDraggable : DraggableObject
    {
        [Header("Album Card Settings")]
        [SerializeField] private FlippableCard flippableCard;
        [SerializeField] private float holdRevealDelay = 0.1f;
        
        private CardData _cardData;
        private bool _isRevealed = false;
        private bool _isDragRevealing = false;
        private bool _waitingForPlacementTap = false;
        private Coroutine _holdRevealCoroutine;
        private bool _isHolding = false; // Track if pointer is currently down
        
        // Events
        public event Action<AlbumCardPlacementDraggable, CardData> OnCardRevealed;
        public event Action<AlbumCardPlacementDraggable, CardData> OnCardPlacedInAlbum;
        
        public CardData CardData => _cardData;
        public bool IsRevealed => _isRevealed;
        public CardZone Zone => _cardData?.Zone ?? CardZone.AppleHills;
        
        protected override void Initialize()
        {
            base.Initialize();
            
            // Auto-find FlippableCard if not assigned
            if (flippableCard == null)
            {
                flippableCard = GetComponent<FlippableCard>();
            }
        }
        
        /// <summary>
        /// Setup the card data (stores it but doesn't reveal until tapped/dragged)
        /// </summary>
        public void SetupCard(CardData data)
        {
            _cardData = data;
            
            if (flippableCard != null)
            {
                flippableCard.SetupCard(data);
            }
        }
        
        /// <summary>
        /// Reveal the card (flip to show front)
        /// </summary>
        public void RevealCard()
        {
            if (_isRevealed) return;
            
            _isRevealed = true;
            
            if (flippableCard != null)
            {
                flippableCard.FlipToReveal();
            }
            
            OnCardRevealed?.Invoke(this, _cardData);
        }
        
        /// <summary>
        /// Snap to the matching album slot
        /// </summary>
        public void SnapToAlbumSlot()
        {
            if (_cardData == null)
            {
                Debug.LogWarning("[AlbumCardPlacementDraggable] Cannot snap to slot - no card data assigned.");
                return;
            }
            
            // Find all album card slots in the scene
            AlbumCardSlot[] allSlots = FindObjectsByType<AlbumCardSlot>(FindObjectsSortMode.None);
            
            AlbumCardSlot matchingSlot = null;
            foreach (var slot in allSlots)
            {
                if (slot.CanAcceptCard(_cardData))
                {
                    matchingSlot = slot;
                    break;
                }
            }
            
            if (matchingSlot != null)
            {
                SetDraggingEnabled(false);
                
                // NEW FLOW: Extract AlbumCard FIRST, then tween it
                if (flippableCard != null)
                {
                    AlbumCard extractedCard = flippableCard.ExtractAlbumCard(matchingSlot.transform);
                    
                    if (extractedCard != null)
                    {
                        // Notify slot that card was placed
                        matchingSlot.OnCardPlaced(extractedCard);
                        
                        // NOW tween the extracted AlbumCard into position
                        TweenExtractedCardToSlot(extractedCard, () =>
                        {
                            // After animation completes
                            Debug.Log($"[AlbumCardPlacementDraggable] Card placement animation complete for {_cardData.Name}");
                            
                            // Notify that card was placed
                            OnCardPlacedInAlbum?.Invoke(this, _cardData);
                            
                            // Destroy this wrapper (the AlbumPlacementCard)
                            Destroy(gameObject);
                        });
                    }
                    else
                    {
                        Debug.LogWarning("[AlbumCardPlacementDraggable] Failed to extract AlbumCard from wrapper!");
                    }
                }
            }
            else
            {
                Debug.LogWarning($"[AlbumCardPlacementDraggable] Could not find matching slot for card '{_cardData.Name}' (Zone: {_cardData.Zone}, Index: {_cardData.CollectionIndex})");
            }
        }
        
        /// <summary>
        /// Tween the extracted AlbumCard into its slot position
        /// Tweens from current size to slot size - AspectRatioFitter handles width
        /// </summary>
        private void TweenExtractedCardToSlot(AlbumCard card, System.Action onComplete)
        {
            Transform cardTransform = card.transform;
            RectTransform cardRect = cardTransform as RectTransform;
            
            if (cardRect != null)
            {
                // Get target height from slot
                RectTransform slotRect = cardTransform.parent as RectTransform;
                float targetHeight = slotRect != null ? slotRect.rect.height : cardRect.sizeDelta.y;
                
                // Tween from current size to target size (AspectRatioFitter will adjust width)
                Vector2 targetSize = new Vector2(cardRect.sizeDelta.x, targetHeight);
                Tween.Size(cardRect, targetSize, snapDuration, 0f, Tween.EaseOutBack);
                
                // Tween position and rotation to slot center
                Tween.LocalPosition(cardRect, Vector3.zero, snapDuration, 0f, Tween.EaseOutBack);
                Tween.LocalRotation(cardTransform, Quaternion.identity, snapDuration, 0f, Tween.EaseOutBack,
                    completeCallback: () =>
                    {
                        Debug.Log($"[AlbumCardPlacementDraggable] Tween complete for extracted card {card.name}, final height: {cardRect.sizeDelta.y}");
                        onComplete?.Invoke();
                    });
            }
            else
            {
                // No RectTransform, just reset and call callback
                cardTransform.localPosition = Vector3.zero;
                cardTransform.localRotation = Quaternion.identity;
                onComplete?.Invoke();
            }
        }
        
        protected override void OnPointerDownHook()
        {
            base.OnPointerDownHook();
            
            _isHolding = true;
            
            // Start hold-reveal timer if card not yet revealed
            if (!_isRevealed && _holdRevealCoroutine == null)
            {
                _holdRevealCoroutine = StartCoroutine(HoldRevealTimer());
            }
        }
        
        protected override void OnPointerUpHook(bool longPress)
        {
            base.OnPointerUpHook(longPress);
            
            Debug.Log($"[CLICK-TRACE-PLACEMENT] OnPointerUpHook on {name}, _wasDragged={_wasDragged}, _isRevealed={_isRevealed}, _waitingForPlacementTap={_waitingForPlacementTap}, longPress={longPress}");
            
            _isHolding = false;
            
            // Cancel hold timer if running
            if (_holdRevealCoroutine != null)
            {
                StopCoroutine(_holdRevealCoroutine);
                _holdRevealCoroutine = null;
            }
            
            // Handle tap (not dragged)
            if (!_wasDragged)
            {
                if (!_isRevealed)
                {
                    Debug.Log($"[CLICK-TRACE-PLACEMENT] {name} - First tap, revealing card");
                    // First tap: reveal the card
                    RevealCard();
                    _waitingForPlacementTap = true;
                }
                else if (_waitingForPlacementTap)
                {
                    Debug.Log($"[CLICK-TRACE-PLACEMENT] {name} - Second tap, snapping to slot");
                    // Second tap: snap to slot
                    _waitingForPlacementTap = false;
                    SnapToAlbumSlot();
                }
                else
                {
                    Debug.Log($"[CLICK-TRACE-PLACEMENT] {name} - Tap after reveal but not waiting for placement tap");
                }
            }
            else if (_isDragRevealing)
            {
                Debug.Log($"[CLICK-TRACE-PLACEMENT] {name} - Was drag-revealed, auto-snapping");
                // Was drag-revealed, auto-snap on release
                _isDragRevealing = false;
                SnapToAlbumSlot();
            }
            else
            {
                Debug.Log($"[CLICK-TRACE-PLACEMENT] {name} - Was dragged but no special handling");
            }
        }
        
        /// <summary>
        /// Coroutine to reveal card after holding for specified duration
        /// </summary>
        private IEnumerator HoldRevealTimer()
        {
            yield return new WaitForSeconds(holdRevealDelay);
            
            // If still holding after delay, reveal the card
            if (!_isRevealed && _isHolding)
            {
                RevealCard();
                _isDragRevealing = true;
                Debug.Log("[AlbumCardDraggable] Card revealed via hold");
            }
            
            _holdRevealCoroutine = null;
        }
    }
}