using System.Collections.Generic;
using AppleHills.Data.CardSystem;
using Core;
using Core.Lifecycle;
using Input;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using UI.CardSystem.StateMachine;
using UI.CardSystem.StateMachine.States;

namespace UI.CardSystem.Testing
{
    /// <summary>
    /// Test controller for card state machine testing.
    /// Provides UI controls to manually test state transitions, animations, and flows.
    /// </summary>
    public class CardTestController : ManagedBehaviour
    {
        [Header("Test Card")]
        [SerializeField] private Card testCard;
        [SerializeField] private CardData testCardData;
        
        [Header("UI References")]
        [SerializeField] private TextMeshProUGUI eventLogText;
        [SerializeField] private Toggle isNewToggle;
        [SerializeField] private Slider repeatCountSlider;
        [SerializeField] private TextMeshProUGUI repeatCountLabel;
        [SerializeField] private TMP_Dropdown rarityDropdown;
        [SerializeField] private Toggle isClickableToggle;
        [SerializeField] private TextMeshProUGUI currentStateText;
        
        private List<string> _eventLog = new List<string>();
        private CardContext _cardContext;
        private Vector3 _originalCardPosition;
        private Vector3 _originalCardScale;
        private Vector2 _originalAnchoredPosition;
        
        private void Awake()
        {
            if (testCard != null)
            {
                _cardContext = testCard.GetComponent<CardContext>();
                _originalCardPosition = testCard.transform.position;
                _originalCardScale = testCard.transform.localScale;
                
                // Store original anchored position if it's a RectTransform
                RectTransform rectTransform = testCard.GetComponent<RectTransform>();
                if (rectTransform != null)
                {
                    _originalAnchoredPosition = rectTransform.anchoredPosition;
                }
                
                // Subscribe to card events (new simplified event model)
                if (_cardContext != null)
                {
                    // TODO: FIX
                    // _cardContext.OnRevealFlowComplete += OnCardRevealFlowComplete;
                }
               
                // Subscribe to drag events to ensure card snaps back when released
                testCard.OnDragStarted += OnCardDragStarted;
                testCard.OnDragEnded += OnCardDragEnded;
            }
            
            // Setup UI listeners
            if (repeatCountSlider != null)
            {
                repeatCountSlider.onValueChanged.AddListener(OnRepeatCountChanged);
            }
            
            if (isClickableToggle != null)
            {
                isClickableToggle.onValueChanged.AddListener(OnIsClickableToggled);
            }
        }

        internal override void OnManagedAwake()
        {
            base.OnManagedAwake();
            
            InputManager.Instance.SetInputMode(InputMode.UI);
        }

        private void Start()
        {
            // Initialize card with test data
            if (testCard != null && testCardData != null && _cardContext != null)
            {
                _cardContext.SetupCard(testCardData);
            }
            
            LogEvent("Card Test Scene Initialized");
            UpdateCurrentStateDisplay();
        }
        
        private void Update()
        {
            // Update current state display every frame
            if (Time.frameCount % 30 == 0) // Every 0.5 seconds at 60fps
            {
                UpdateCurrentStateDisplay();
            }
        }
        
        #region State Transition Buttons
        
        /// <summary>
        /// Reset card to default state (position, scale) before transitioning to a new state.
        /// This prevents accumulation of tweens and ensures animations play correctly.
        /// </summary>
        private void ResetCardToDefault()
        {
            if (testCard == null || _cardContext == null) return;
            
            // Stop all animations
            if (_cardContext.Animator != null)
            {
                _cardContext.Animator.StopAllAnimations();
            }
            
            // Reset transform immediately
            testCard.transform.localScale = _originalCardScale;
            testCard.transform.position = _originalCardPosition;
            
            // Reset anchored position if it's a RectTransform
            RectTransform rectTransform = testCard.GetComponent<RectTransform>();
            if (rectTransform != null)
            {
                rectTransform.anchoredPosition = _originalAnchoredPosition;
            }
            
            LogEvent("Card reset to default state");
        }
        
        public void TransitionToIdleState()
        {
            ResetCardToDefault();
            _cardContext?.StateMachine.ChangeState("IdleState");
            LogEvent("Transitioned to IdleState");
        }
        
        public void TransitionToRevealedState()
        {
            ResetCardToDefault();
            _cardContext?.StateMachine.ChangeState("RevealedState");
            LogEvent("Transitioned to RevealedState");
        }
        
        public void TransitionToEnlargedNewState()
        {
            ResetCardToDefault();
            _cardContext?.StateMachine.ChangeState("EnlargedNewState");
            LogEvent("Transitioned to EnlargedNewState");
        }
        
        public void TransitionToEnlargedRepeatState()
        {
            ResetCardToDefault();
            _cardContext?.StateMachine.ChangeState("EnlargedRepeatState");
            LogEvent("Transitioned to EnlargedRepeatState");
        }
        
        public void TransitionToDraggingState()
        {
            ResetCardToDefault();
            _cardContext?.StateMachine.ChangeState("DraggingState");
            LogEvent("Transitioned to DraggingState");
        }
        
        public void TransitionToAlbumEnlargedState()
        {
            ResetCardToDefault();
            _cardContext?.StateMachine.ChangeState("AlbumEnlargedState");
            LogEvent("Transitioned to AlbumEnlargedState");
        }
        
        #endregion
        
        #region Simulation Buttons
        
        public void SimulateNewCardFlow()
        {
            if (_cardContext == null) return;
            
            // NOTE: These properties no longer exist in CardContext (removed to prevent stale data)
            // States now query CardSystemManager directly
            // This test controller manually manipulates state machine for testing only
            _cardContext.IsClickable = true;
            
            TransitionToIdleState();
            LogEvent("Simulating NEW CARD flow - click card to flip (test bypasses collection checks)");
        }
        
        public void SimulateRepeatCardFlow()
        {
            if (_cardContext == null) return;
            
            // NOTE: RepeatCardCount removed from CardContext
            // Test directly transitions to state for visual testing
            _cardContext.IsClickable = true;
            
            TransitionToIdleState();
            LogEvent($"Simulating REPEAT CARD flow (test bypasses collection checks)");
        }
        
        public void SimulateUpgradeFlow()
        {
            if (_cardContext == null) return;
            
            // NOTE: WillTriggerUpgrade removed from CardContext
            // Test directly transitions to state for visual testing
            _cardContext.IsClickable = true;
            
            TransitionToIdleState();
            LogEvent("Simulating UPGRADE flow (test bypasses collection checks)");
        }
        
        public void TestDragAndSnap()
        {
            if (testCard == null) return;
            
            // Enable dragging for the test
            testCard.SetDraggingEnabled(true);
            TransitionToRevealedState();
            
            LogEvent("DRAG TEST enabled - drag the card and release to see it snap back");
        }
        
        #endregion
        
        #region Card Setup Controls
        
        public void ApplyCardSetup()
        {
            if (_cardContext == null) return;
            
            bool isNew = isNewToggle != null && isNewToggle.isOn;
            int repeatCount = repeatCountSlider != null ? Mathf.RoundToInt(repeatCountSlider.value) : 0;
            
            // Apply rarity if needed
            if (rarityDropdown != null && testCardData != null)
            {
                testCardData.Rarity = (CardRarity)rarityDropdown.value;
            }
            
            LogEvent($"Card setup applied: IsNew={isNew}, RepeatCount={repeatCount}");
        }
        
        private void OnRepeatCountChanged(float value)
        {
            if (repeatCountLabel != null)
            {
                repeatCountLabel.text = $"{Mathf.RoundToInt(value)}/5";
            }
        }
        
        private void OnIsClickableToggled(bool isClickable)
        {
            if (_cardContext != null)
            {
                _cardContext.IsClickable = isClickable;
                LogEvent($"Card clickable: {isClickable}");
            }
        }
        
        #endregion
        
        #region Animation Test Buttons
        
        public void PlayFlipAnimation()
        {
            // Reset card first to prevent accumulation
            ResetCardToDefault();
            
            // Transition to IdleState and programmatically trigger flip
            TransitionToIdleState();
            
            // Get IdleState and trigger click
            var idleState = testCard.GetComponentInChildren<CardIdleState>();
            if (idleState != null)
            {
                idleState.OnPointerClick(null);
                LogEvent("Playing flip animation");
            }
        }
        
        public void PlayEnlargeAnimation()
        {
            if (_cardContext?.Animator != null)
            {
                ResetCardToDefault();
                _cardContext.Animator.PlayEnlarge(1.5f);
                LogEvent("Playing enlarge animation");
            }
        }
        
        public void PlayShrinkAnimation()
        {
            if (_cardContext?.Animator != null)
            {
                // Don't reset for shrink - we want to shrink from current state
                _cardContext.Animator.PlayShrink(Vector3.one, null);
                LogEvent("Playing shrink animation");
            }
        }
        
        public void StartIdleHoverAnimation()
        {
            if (_cardContext?.Animator != null)
            {
                // Reset card position first to prevent accumulation
                ResetCardToDefault();
                
                _cardContext.Animator.StartIdleHover(10f, 1.5f, restartIfActive: true);
                LogEvent("Started idle hover animation");
            }
        }
        
        public void StopIdleHoverAnimation()
        {
            if (_cardContext?.Animator != null)
            {
                _cardContext.Animator.StopIdleHover(_originalAnchoredPosition);
                LogEvent("Stopped idle hover animation");
            }
        }
        
        #endregion
        
        #region Utility Buttons
        
        public void ResetCardPosition()
        {
            if (testCard != null)
            {
                testCard.transform.position = _originalCardPosition;
                testCard.transform.localScale = _originalCardScale;
                
                // Reset anchored position if it's a RectTransform
                RectTransform rectTransform = testCard.GetComponent<RectTransform>();
                if (rectTransform != null)
                {
                    rectTransform.anchoredPosition = _originalAnchoredPosition;
                }
                
                LogEvent("Card position reset");
            }
        }
        
        public void ClearEventLog()
        {
            _eventLog.Clear();
            UpdateEventLog();
            LogEvent("Event log cleared");
        }
        
        #endregion
        
        #region Event Handlers
        
        private void OnCardRevealFlowComplete(CardContext context)
        {
            LogEvent($"Event: OnRevealFlowComplete - Card reveal complete for {context.CardData?.Name}");
        }
        
        private void OnCardDragStarted(UI.DragAndDrop.Core.DraggableObject draggable)
        {
            LogEvent("Event: OnDragStarted - Card is being dragged");
        }
        
        private void OnCardDragEnded(UI.DragAndDrop.Core.DraggableObject draggable)
        {
            LogEvent("Event: OnDragEnded - Snapping card back to spawn point");
            
            // Snap card back to original position (no slotting in test scene)
            if (testCard != null)
            {
                testCard.transform.position = _originalCardPosition;
                
                // Return to idle state after drag
                TransitionToIdleState();
            }
        }
        
        #endregion
        
        #region Event Log
        
        private void LogEvent(string message)
        {
            string timestamp = $"[{Time.time:F2}s]";
            _eventLog.Add($"{timestamp} {message}");
            
            // Keep only last 20 events
            if (_eventLog.Count > 20)
            {
                _eventLog.RemoveAt(0);
            }
            
            UpdateEventLog();
            Logging.Debug($"[CardTest] {message}");
        }
        
        private void UpdateEventLog()
        {
            if (eventLogText != null)
            {
                eventLogText.text = string.Join("\n", _eventLog);
            }
        }
        
        private void UpdateCurrentStateDisplay()
        {
            if (currentStateText != null && _cardContext != null && _cardContext.StateMachine != null)
            {
                // Get the active state by checking which child state GameObject is active
                string stateName = "Unknown";
                Transform stateMachineTransform = _cardContext.StateMachine.transform;
                
                for (int i = 0; i < stateMachineTransform.childCount; i++)
                {
                    Transform child = stateMachineTransform.GetChild(i);
                    if (child.gameObject.activeSelf)
                    {
                        stateName = child.name;
                        break;
                    }
                }
                
                currentStateText.text = $"Current State: {stateName}";
            }
        }
        
        #endregion
        
        private void OnDestroy()
        {
            // Unsubscribe from events
            if (_cardContext != null)
            {
                // TODO: FIX
                // _cardContext.OnRevealFlowComplete -= OnCardRevealFlowComplete;
            }
            
            if (testCard != null)
            {
                testCard.OnDragStarted -= OnCardDragStarted;
                testCard.OnDragEnded -= OnCardDragEnded;
            }
        }
    }
}