using Core.SaveLoad;
using UnityEngine;
using UnityEngine.EventSystems;
using AppleHills.Core.Settings;
using Core;
using AppleHills.Data.CardSystem;

namespace UI.CardSystem.StateMachine.States
{
    /// <summary>
    /// Enlarged state for REPEAT cards - shows progress bar toward next rarity upgrade.
    /// Uses ProgressBarController to animate progress filling.
    /// Auto-upgrades card when threshold is reached.
    /// </summary>
    public class CardEnlargedRepeatState : AppleState, IPointerClickHandler
    {
        [Header("State-Owned Visuals")]
        [SerializeField] private GameObject progressBarContainer;
        [SerializeField] private ProgressBarController progressBar;
        
        private CardContext _context;
        private ICardSystemSettings _settings;
        private Vector3 _originalScale;
        private bool _waitingForTap = false;
        
        private void Awake()
        {
            _context = GetComponentInParent<CardContext>();
            _settings = GameManager.GetSettingsObject<ICardSystemSettings>();
        }
        
        public override void OnEnterState()
        {
            // Store original scale
            _originalScale = _context.RootTransform.localScale;
            _waitingForTap = false;
            
            // Show progress bar container
            if (progressBarContainer != null)
            {
                progressBarContainer.SetActive(true);
            }
            
            // Enlarge the card
            if (_context.Animator != null)
            {
                _context.Animator.PlayEnlarge(_settings.NewCardEnlargedScale);
            }
            
            // Show progress with blink animation
            if (progressBar != null)
            {
                int currentCount = _context.RepeatCardCount + 1; // +1 because we just got this card
                int maxCount = _settings.CardsToUpgrade;
                
                progressBar.ShowProgress(currentCount, maxCount, OnProgressComplete);
            }
            else
            {
                Logging.Warning("[CardEnlargedRepeatState] ProgressBar component not assigned!");
                OnProgressComplete();
            }
        }
        
        private void OnProgressComplete()
        {
            // Check if this card triggers an upgrade
            if (ShouldTriggerUpgrade())
            {
                Logging.Debug($"[CardEnlargedRepeatState] Card will trigger upgrade! ({_context.RepeatCardCount + 1}/{_settings.CardsToUpgrade})");
                TriggerUpgrade();
            }
            else
            {
                // No upgrade - just wait for tap to dismiss
                Logging.Debug($"[CardEnlargedRepeatState] Progress shown, waiting for tap to dismiss");
                _waitingForTap = true;
            }
        }
        
        private bool ShouldTriggerUpgrade()
        {
            int currentCount = _context.RepeatCardCount + 1; // +1 for the card we just got
            CardRarity currentRarity = _context.CardData.Rarity;
            
            // Can't upgrade if already Legendary
            if (currentRarity == CardRarity.Legendary)
                return false;
            
            // Check if we've hit the threshold
            return currentCount >= _settings.CardsToUpgrade;
        }
        
        private void TriggerUpgrade()
        {
            _context.FireUpgradeTriggered();
            
            CardData cardData = _context.CardData;
            CardRarity oldRarity = cardData.Rarity;
            CardRarity newRarity = oldRarity + 1;
            
            Logging.Debug($"[CardEnlargedRepeatState] Upgrading card from {oldRarity} to {newRarity}");
            
            // Get the existing card at lower rarity from inventory
            CardData existingLowerRarity = Data.CardSystem.CardSystemManager.Instance.GetCardInventory().GetCard(cardData.Name, oldRarity);
            
            if (existingLowerRarity != null)
            {
                // Reset lower rarity count to 0
                existingLowerRarity.CopiesOwned = 0;
            }
            
            // Create upgraded card data
            CardData upgradedCard = new CardData(cardData);
            upgradedCard.Rarity = newRarity;
            upgradedCard.CopiesOwned = 1;
            
            // Check if this card is new at the higher rarity
            bool isNewAtHigherRarity = Data.CardSystem.CardSystemManager.Instance.IsCardNew(upgradedCard, out CardData existingHigherRarity);
            
            // Add to inventory
            Data.CardSystem.CardSystemManager.Instance.GetCardInventory().AddCard(upgradedCard);
            
            // Update our card data to show upgraded rarity
            cardData.Rarity = newRarity;
            
            // Update the CardDisplay to show new rarity
            if (_context.CardDisplay != null)
            {
                _context.CardDisplay.SetupCard(cardData);
            }
            
            // Determine next transition
            if (isNewAtHigherRarity || newRarity == CardRarity.Legendary)
            {
                // Show as NEW at higher rarity
                Logging.Debug($"[CardEnlargedRepeatState] Card is NEW at {newRarity}, transitioning to EnlargedNewState");
                TransitionToNewCardView();
            }
            else
            {
                // Already have copies at higher rarity - show progress there too
                int ownedAtHigherRarity = existingHigherRarity.CopiesOwned;
                Logging.Debug($"[CardEnlargedRepeatState] Card is REPEAT at {newRarity} ({ownedAtHigherRarity}/{_settings.CardsToUpgrade}), showing progress");
                
                // Update context for higher rarity
                _context.IsNewCard = false;
                _context.RepeatCardCount = ownedAtHigherRarity;
                
                // Re-enter this state with updated data (will show progress for higher rarity)
                // First hide current progress, then show new progress
                if (progressBar != null)
                {
                    progressBar.ShowProgress(ownedAtHigherRarity + 1, _settings.CardsToUpgrade, () =>
                    {
                        // After showing progress at higher rarity, transition to NEW
                        TransitionToNewCardView();
                    });
                }
                else
                {
                    TransitionToNewCardView();
                }
            }
        }
        
        private void TransitionToNewCardView()
        {
            // Update context to show as new card
            _context.IsNewCard = true;
            
            // Hide progress bar before transitioning
            if (progressBarContainer != null)
            {
                progressBarContainer.SetActive(false);
            }
            
            // Transition to EnlargedNewState (card is already enlarged, will show NEW badge)
            _context.StateMachine.ChangeState("EnlargedNewState");
        }
        
        public void OnPointerClick(PointerEventData eventData)
        {
            // Only respond to clicks if waiting for tap
            if (!_waitingForTap)
                return;
            
            // Fire dismissed event
            _context.FireCardDismissed();
            
            // Tap to dismiss - shrink back and transition to revealed state
            if (_context.Animator != null)
            {
                _context.Animator.PlayShrink(_originalScale, onComplete: () =>
                {
                    _context.StateMachine.ChangeState("RevealedState");
                });
            }
            else
            {
                _context.StateMachine.ChangeState("RevealedState");
            }
        }
        
        private void OnDisable()
        {
            // Hide progress bar when leaving state
            if (progressBarContainer != null)
            {
                progressBarContainer.SetActive(false);
            }
        }
    }
}