using UnityEngine;
using UnityEngine.UI;
using Core.Lifecycle;
using Pixelplacement.TweenSystem;
using Utils;

namespace Minigames.BirdPooper
{
    /// <summary>
    /// Manages "tap to start" flow for Bird Pooper minigame.
    /// Shows blinking finger UI, waits for first tap, then starts the game.
    /// </summary>
    public class TapToStartController : ManagedBehaviour, ITouchInputConsumer
    {
        [Header("UI References")]
        [SerializeField] private GameObject fingerContainer;
        [SerializeField] private Image fingerImage;
        
        [Header("Animation Settings")]
        [Tooltip("Duration for one complete fade in/out cycle")]
        [SerializeField] private float blinkDuration = 1.5f;
        [Tooltip("Minimum alpha value during blink")]
        [SerializeField] private float minAlpha = 0.3f;
        [Tooltip("Maximum alpha value during blink")]
        [SerializeField] private float maxAlpha = 1f;
        
        private bool _isWaitingForTap;
        private TweenBase _blinkTween;

        internal override void OnManagedAwake()
        {
            base.OnManagedAwake();
            
            // Validate references
            if (fingerContainer == null)
            {
                Debug.LogError("[TapToStartController] Finger container not assigned!");
            }
            
            if (fingerImage == null)
            {
                Debug.LogError("[TapToStartController] Finger image not assigned!");
            }
            
            // Start hidden
            if (fingerContainer != null)
            {
                fingerContainer.SetActive(false);
            }
        }

        /// <summary>
        /// Activates the tap-to-start UI and begins waiting for player input.
        /// Called by BirdPooperGameManager when scene is ready.
        /// </summary>
        public void Activate()
        {
            if (_isWaitingForTap)
            {
                Debug.LogWarning("[TapToStartController] Already waiting for tap!");
                return;
            }

            Debug.Log("[TapToStartController] Activating tap-to-start...");
            
            _isWaitingForTap = true;
            
            // Show finger UI
            if (fingerContainer != null)
            {
                fingerContainer.SetActive(true);
            }
            
            // Start blinking animation using tween utility
            if (fingerImage != null)
            {
                _blinkTween = TweenAnimationUtility.StartBlinkImage(fingerImage, minAlpha, maxAlpha, blinkDuration);
            }
            
            // Register as high-priority input consumer to catch first tap
            if (Input.InputManager.Instance != null)
            {
                Input.InputManager.Instance.SetDefaultConsumer(this);
                Debug.Log("[TapToStartController] Registered as input consumer");
            }
            else
            {
                Debug.LogError("[TapToStartController] InputManager instance not found!");
            }
        }

        #region ITouchInputConsumer Implementation

        public void OnTap(Vector2 tapPosition)
        {
            if (!_isWaitingForTap) return;

            Debug.Log("[TapToStartController] First tap received! Starting game...");
            
            // Stop waiting for tap
            _isWaitingForTap = false;
            
            // Stop blinking animation
            if (_blinkTween != null)
            {
                _blinkTween.Stop();
                _blinkTween = null;
            }
            
            // Hide finger UI
            if (fingerContainer != null)
            {
                fingerContainer.SetActive(false);
            }
            
            // Unregister from input system
            if (Input.InputManager.Instance != null)
            {
                Input.InputManager.Instance.SetDefaultConsumer(null);
                Debug.Log("[TapToStartController] Unregistered from input");
            }
            
            // Tell game manager to start the game (it will handle the initial flap)
            BirdPooperGameManager.Instance.BeginMinigame();

        }

        public void OnHoldStart(Vector2 position) { }
        public void OnHoldMove(Vector2 position) { }
        public void OnHoldEnd(Vector2 position) { }

        #endregion

        internal override void OnManagedDestroy()
        {
            // Stop blinking animation if active
            if (_blinkTween != null)
            {
                _blinkTween.Stop();
                _blinkTween = null;
            }
            
            // Unregister from input if still registered
            if (_isWaitingForTap && Input.InputManager.Instance != null)
            {
                Input.InputManager.Instance.SetDefaultConsumer(null);
            }
            
            base.OnManagedDestroy();
        }
    }
}