using System.Collections;
using Core;
using UnityEngine;

namespace Minigames.FortFight.Projectiles
{
    /// <summary>
    /// Ceiling Fan projectile - drops straight down when player taps screen.
    /// Implements ITouchInputConsumer to capture tap input mid-flight.
    /// </summary>
    public class CeilingFanProjectile : ProjectileBase, ITouchInputConsumer
    {
        [Header("Ceiling Fan Specific")]
        [Tooltip("Visual indicator showing drop is available (arrow down)")]
        [SerializeField] private GameObject indicator;
        
        private bool isDropping = false;
        private bool inputEnabled = false;
        
        public override void Launch(Vector2 direction, float force)
        {
            base.Launch(direction, force);
            
            // Hide indicator initially
            if (indicator != null)
            {
                indicator.SetActive(false);
            }
            
            // Start activation delay coroutine
            StartCoroutine(ActivationDelayCoroutine());
        }
        
        private IEnumerator ActivationDelayCoroutine()
        {
            // Get activation delay from settings
            var settings = GameManager.GetSettingsObject<AppleHills.Core.Settings.IFortFightSettings>();
            float activationDelay = settings?.CeilingFanActivationDelay ?? 0.5f;
            
            // Wait for delay
            yield return new WaitForSeconds(activationDelay);
            
            // Enable input and show indicator (if not already dropped)
            if (!isDropping && !AbilityActivated)
            {
                inputEnabled = true;
                
                if (indicator != null)
                {
                    indicator.SetActive(true);
                }
                
                // Register with InputManager to capture tap-to-drop
                if (Input.InputManager.Instance != null)
                {
                    Input.InputManager.Instance.RegisterOverrideConsumer(this);
                    Logging.Debug("[CeilingFanProjectile] Tap-to-drop now available");
                }
            }
        }
        
        public override void ActivateAbility()
        {
            base.ActivateAbility();
            
            if (AbilityActivated)
            {
                Logging.Debug("[CeilingFanProjectile] Ability activated - dropping straight down");
                StartCoroutine(DropCoroutine());
            }
        }
        
        private IEnumerator DropCoroutine()
        {
            isDropping = true;
            
            // Stop all velocity
            if (rb2D != null)
            {
                rb2D.linearVelocity = Vector2.zero;
                rb2D.angularVelocity = 0f;
            }
            
            // Get drop configuration from settings
            var settings = GameManager.GetSettingsObject<AppleHills.Core.Settings.IFortFightSettings>();
            float dropDelay = settings?.CeilingFanDropDelay ?? 0.2f;
            float dropSpeed = settings?.CeilingFanDropSpeed ?? 20f;
            
            // Wait brief moment
            yield return new WaitForSeconds(dropDelay);
            
            // Drop straight down
            if (rb2D != null)
            {
                rb2D.linearVelocity = Vector2.down * dropSpeed;
                Logging.Debug($"[CeilingFanProjectile] Dropping with velocity: {rb2D.linearVelocity}");
            }
        }
        
        protected override void OnHit(Collision2D collision)
        {
            // Spawn impact effect only if dropped (not on normal arc hit)
            if (isDropping)
            {
                SpawnImpactEffect(collision.contacts[0].point);
            }
            
            // Deal damage to blocks
            var block = collision.gameObject.GetComponent<Fort.FortBlock>();
            if (block != null)
            {
                block.TakeDamage(Damage);
                Logging.Debug($"[CeilingFanProjectile] Dealt {Damage} damage to {block.gameObject.name}");
            }
            
            // Destroy projectile
            DestroyProjectile();
        }
        
        #region ITouchInputConsumer Implementation
        
        public void OnTap(Vector2 worldPosition)
        {
            // Only respond if input is enabled
            if (inputEnabled && !AbilityActivated && !isDropping)
            {
                Logging.Debug("[CeilingFanProjectile] Tap detected - activating drop");
                
                // Hide indicator
                if (indicator != null)
                {
                    indicator.SetActive(false);
                }
                
                ActivateAbility();
                
                // Unregister immediately after tap
                UnregisterFromInput();
            }
        }
        
        public void OnHoldStart(Vector2 worldPosition)
        {
            // Not used for ceiling fan
        }
        
        public void OnHoldMove(Vector2 worldPosition)
        {
            // Not used for ceiling fan
        }
        
        public void OnHoldEnd(Vector2 worldPosition)
        {
            // Not used for ceiling fan
        }
        
        #endregion
        
        private void UnregisterFromInput()
        {
            inputEnabled = false;
            
            if (indicator != null)
            {
                indicator.SetActive(false);
            }
            
            if (Input.InputManager.Instance != null)
            {
                Input.InputManager.Instance.UnregisterOverrideConsumer(this);
                Logging.Debug("[CeilingFanProjectile] Unregistered from input");
            }
        }
        
        protected override void DestroyProjectile()
        {
            // Make sure we unregister when destroyed
            UnregisterFromInput();
            base.DestroyProjectile();
        }
    }
}