using Core.SaveLoad;
using UnityEngine;
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, ICardClickHandler
    {
        [Header("State-Owned Visuals")]
        [SerializeField] private ProgressBarController progressBar;
        
        private CardContext _context;
        private ICardSystemSettings _settings;
        private bool _waitingForTap = false;
        
        private void Awake()
        {
            _context = GetComponentInParent<CardContext>();
            _settings = GameManager.GetSettingsObject<ICardSystemSettings>();
        }
        
        public override void OnEnterState()
        {
            // Ensure card front is visible and facing camera
            if (_context.CardDisplay != null)
            {
                _context.CardDisplay.gameObject.SetActive(true);
                _context.CardDisplay.transform.localRotation = Quaternion.Euler(0, 0, 0);
            }
            
            _waitingForTap = false;
            
            // Query current collection state for this card
            bool isNew = Data.CardSystem.CardSystemManager.Instance.IsCardNew(_context.CardData, out CardData existingCard);
            int currentOwnedCount = (existingCard != null) ? existingCard.CopiesOwned : 0;
            
            // Show progress bar
            if (progressBar != null)
            {
                progressBar.gameObject.SetActive(true);
                
                int currentCount = currentOwnedCount + 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();
            }
            
            // Enlarge the card
            if (_context.Animator != null)
            {
                _context.Animator.PlayEnlarge(_settings.NewCardEnlargedScale);
            }
        }
        
        private void OnProgressComplete()
        {
            // Query current state again to determine if upgrade is triggered
            Data.CardSystem.CardSystemManager.Instance.IsCardNew(_context.CardData, out CardData existingCard);
            int currentOwnedCount = (existingCard != null) ? existingCard.CopiesOwned : 0;
            int countWithThisCard = currentOwnedCount + 1;
            
            bool willUpgrade = (_context.CardData.Rarity < AppleHills.Data.CardSystem.CardRarity.Legendary) && 
                               (countWithThisCard >= _settings.CardsToUpgrade);
            
            if (willUpgrade)
            {
                Logging.Debug($"[CardEnlargedRepeatState] Card will trigger upgrade! ({countWithThisCard}/{_settings.CardsToUpgrade})");
                TriggerUpgrade();
            }
            else
            {
                // No upgrade - just wait for tap to dismiss
                Logging.Debug($"[CardEnlargedRepeatState] Progress shown ({countWithThisCard}/{_settings.CardsToUpgrade}), waiting for tap to dismiss");
                _waitingForTap = true;
            }
        }
        
        private void TriggerUpgrade()
        {
            CardData cardData = _context.CardData;
            CardRarity oldRarity = cardData.Rarity;
            CardRarity newRarity = oldRarity + 1;

            Logging.Debug($"[CardEnlargedRepeatState] Upgrading card from {oldRarity} to {newRarity}");

            var inventory = Data.CardSystem.CardSystemManager.Instance.GetCardInventory();
            
            // Remove lower rarity card counts (set to 1 per new rule instead of zeroing out)
            CardRarity clearRarity = cardData.Rarity;
            while (clearRarity < newRarity)
            {
                var lower = inventory.GetCard(cardData.DefinitionId, clearRarity);
                if (lower != null) lower.CopiesOwned = 1; // changed from 0 to 1
                clearRarity += 1;
            }
            
            // Check if higher rarity already exists BEFORE adding
            CardData existingHigher = inventory.GetCard(cardData.DefinitionId, newRarity);
            bool higherExists = existingHigher != null;
            
            if (higherExists)
            {
                // Increment existing higher rarity copies
                existingHigher.CopiesOwned += 1;

                // Update our displayed card to new rarity
                cardData.Rarity = newRarity;
                cardData.CopiesOwned = existingHigher.CopiesOwned; // reflect correct count

                if (_context.CardDisplay != null)
                {
                    _context.CardDisplay.SetupCard(cardData);
                }

                // For repeat-at-higher-rarity: show a brief progress update at higher rarity while enlarged
                int ownedAtHigher = existingHigher.CopiesOwned;
                if (progressBar != null)
                {
                    progressBar.ShowProgress(ownedAtHigher, _settings.CardsToUpgrade, () =>
                    {
                        // After showing higher-rarity progress, wait for tap to dismiss
                        _waitingForTap = true;
                    });
                }
                else
                {
                    _waitingForTap = true;
                }
            }
            else
            {
                // Create upgraded card as new rarity
                CardData upgradedCard = new CardData(cardData);
                upgradedCard.Rarity = newRarity;
                upgradedCard.CopiesOwned = 1;

                // Add to inventory
                inventory.AddCard(upgradedCard);

                // Update current display card to new rarity
                cardData.Rarity = newRarity;
                cardData.CopiesOwned = upgradedCard.CopiesOwned;

                if (_context.CardDisplay != null)
                {
                    _context.CardDisplay.SetupCard(cardData);
                }

                // Branch based on whether legendary or not
                if (newRarity == CardRarity.Legendary)
                {
                    // Show special enlarged legendary presentation, await click to shrink to revealed
                    _context.StateMachine.ChangeState(CardStateNames.EnlargedLegendaryRepeat);
                }
                else
                {
                    // Treat as NEW at higher rarity (enlarged with NEW visuals handled there)
                    _context.StateMachine.ChangeState(CardStateNames.EnlargedNew);
                }
            }
        }
        
        private void TransitionToNewCardView()
        {
            // Hide progress bar before transitioning
            if (progressBar != null)
            {
                progressBar.gameObject.SetActive(false);
            }
            
            // Transition to EnlargedNewState (card is already enlarged, will show NEW badge)
            // State will query fresh collection data to determine if truly new
            _context.StateMachine.ChangeState(CardStateNames.EnlargedNew);
        }
        
        public void OnCardClicked(CardContext context)
        {
            if (!_waitingForTap)
                return;
            

            // Tap to dismiss - shrink back to original scale and transition to revealed state
            if (context.Animator != null)
            {
                context.Animator.PlayShrink(context.OriginalScale, onComplete: () =>
                {
                    context.StateMachine.ChangeState(CardStateNames.Revealed);
                });
            }
            else
            {
                context.StateMachine.ChangeState("RevealedState");
            }
        }
        
        private void OnDisable()
        {
            // Hide progress bar when leaving state
            if (progressBar != null)
            {
                progressBar.gameObject.SetActive(false);
            }
        }
    }
}