using UnityEngine;
using Input;

namespace FX
{
    /// <summary>
    /// Controls particle effects based on player movement.
    /// Automatically enables/disables particle emission when the player starts/stops moving.
    /// Attach this to the same GameObject as the PlayerTouchController.
    /// </summary>
    public class TrafalgarFXController : MonoBehaviour
    {
        private PlayerTouchController _playerController;
        private ParticleSystem _particleSystem;

        private void Awake()
        {
            // Get the PlayerTouchController on this game object
            _playerController = GetComponent<PlayerTouchController>();
            
            if (_playerController == null)
            {
                Debug.LogError("TrafalgarFXController: No PlayerTouchController found on this GameObject! This component should be attached to the same GameObject as PlayerTouchController.");
                enabled = false;
                return;
            }
            
            // Find the particle system in children
            _particleSystem = GetComponentInChildren<ParticleSystem>();
            
            if (_particleSystem == null)
            {
                Debug.LogError("TrafalgarFXController: No ParticleSystem found in children! This component requires a ParticleSystem in the hierarchy below it.");
                enabled = false;
                return;
            }
            
            // Make sure emission is disabled at start
            var emission = _particleSystem.emission;
            emission.enabled = false;
        }

        private void Start()
        {
            // Subscribe to movement events
            _playerController.OnMovementStarted += EnableParticles;
            _playerController.OnMovementStopped += DisableParticles;
            
            // Set initial state based on current movement status
            SetParticlesState(_playerController.IsMoving);
        }

        private void OnDestroy()
        {
            // Unsubscribe from events when this component is destroyed
            if (_playerController != null)
            {
                _playerController.OnMovementStarted -= EnableParticles;
                _playerController.OnMovementStopped -= DisableParticles;
            }
        }

        private void EnableParticles()
        {
            SetParticlesState(true);
        }

        private void DisableParticles()
        {
            SetParticlesState(false);
        }

        private void SetParticlesState(bool enabled)
        {
            if (_particleSystem != null)
            {
                var emission = _particleSystem.emission;
                emission.enabled = enabled;
                
                if (enabled)
                {
                    // Optionally play the system when enabling (useful if it's not in looping mode)
                    if (!_particleSystem.isPlaying)
                    {
                        _particleSystem.Play();
                    }
                }
            }
        }
    }
}