using System;
using BrewMonster.Scripts;
using UnityEngine;

namespace BrewMonster.PerfectWorld.Scripts.Vfx
{
    public enum GFX_STATE
    {
        ST_STOP		= 0,
        ST_PLAY		= 1,
        ST_PAUSE	= 2,
        ST_EDITMODE	= 3
    }
    public class BaseVfxObject : MonoBehaviour
    {
        [SerializeField] private ParticleSystem _vfx;
        [SerializeField] private float _lifeTime =-1;
        [SerializeField] private bool _isLoopVfx;
        private string _vfxPath;
        private Vector3 _originalScale = Vector3.one;
        private Vector3 _offset = Vector3.zero;
        [SerializeField]private GFX_STATE m_iState;
        private float _elapsedTime = 0f;
        private bool _lifetimeCompleted = false;
        
        /// <summary>
        /// 生命周期完成事件 / Event triggered when lifetime is completed
        /// </summary>
        public event Action OnLifetimeCompleted;

        private void Awake()
        {
            if (_vfx == null)
            {
                _vfx = GetComponent<ParticleSystem>();
            }
            
            if (_vfx != null)
            {
                _originalScale = _vfx.transform.localScale;
            }
        }
        private void OnDestroy()
        {
            if(!string.IsNullOrEmpty(_vfxPath))
            {
                AddressableManager.Instance.UnloadAsset(_vfxPath);
            }
        }
        
        private void Update()
        {
            if(_isLoopVfx) return;
            if (_lifeTime > 0 && m_iState == GFX_STATE.ST_PLAY && !_lifetimeCompleted)
            {
                _elapsedTime += Time.deltaTime;
                
                if (_elapsedTime >= _lifeTime)
                {
                    _lifetimeCompleted = true;
                    Stop();
                    OnLifetimeCompleted?.Invoke();
                }
            }
        }

        public void Init(string vfxPath)
        {
            _vfxPath = vfxPath;
        }

        #region EC

        public GFX_STATE GetState() { return m_iState; }

        #endregion

        /// <summary>
        /// Set VFX scale
        /// </summary>
        public void SetScale(float scale)
        {
            SetScale(new Vector3(scale, scale, scale));
        }

        /// <summary>
        /// Set VFX scale with vector
        /// </summary>
        public void SetScale(Vector3 scale)
        {
            if (_vfx != null)
            {
                _vfx.transform.localScale = Vector3.Scale(_originalScale, scale);
                
                // 调整粒子大小 / Adjust particle size
                var main = _vfx.main;
                main.startSizeMultiplier *= scale.magnitude / Mathf.Sqrt(3);
            }
        }

        /// <summary>
        /// Set VFX offset
        /// </summary>
        public void SetOffset(Vector3 offset)
        {
            _offset = offset;
            if (_vfx != null)
            {
                _vfx.transform.localPosition = offset;
            }
        }

        /// <summary>
        /// Set VFX world position
        /// </summary>
        public void SetPosition(Vector3 position)
        {
            if (_vfx != null)
            {
                _vfx.transform.position = position;
            }
        }

        /// <summary>
        /// Set VFX rotation
        /// </summary>
        public void SetRotation(Quaternion rotation)
        {
            if (_vfx != null)
            {
                _vfx.transform.rotation = rotation;
            }
        }

        /// <summary>
        /// Set VFX rotation with euler angles
        /// </summary>
        public void SetRotation(Vector3 eulerAngles)
        {
            SetRotation(Quaternion.Euler(eulerAngles));
        }

        /// <summary>
        /// Set VFX color
        /// </summary>
        public void SetColor(Color color)
        {
            if (_vfx != null)
            {
                var main = _vfx.main;
                main.startColor = color;
            }
        }

        /// <summary>
        /// Set VFX duration
        /// </summary>
        public void SetDuration(float duration)
        {
            if (_vfx != null)
            {
                var main = _vfx.main;
                main.duration = duration;
            }
        }

        /// <summary>
        /// Set VFX playback speed
        /// </summary>
        public void SetSpeed(float speed)
        {
            if (_vfx != null)
            {
                var main = _vfx.main;
                main.simulationSpeed = speed;
            }
        }

        /// <summary>
        /// Play VFX
        /// </summary>
        public void Play()
        {
            Stop();
            if (_vfx != null)
            {
                m_iState = GFX_STATE.ST_PLAY;
                gameObject.SetActive(true);
                _vfx.Play();
                
                // 重置生命周期计时器 / Reset lifetime timer
                _elapsedTime = 0f;
                _lifetimeCompleted = false;
            }
        }

        /// <summary>
        /// Stop VFX
        /// </summary>
        public void Stop(bool resetParent = false)
        {
            if (_vfx != null)
            {
                m_iState = GFX_STATE.ST_STOP;
                _vfx.Stop();
                gameObject.SetActive(false);
                if(resetParent) gameObject.transform.parent = null;
            }
        }


        /// <summary>
        /// Pause VFX
        /// </summary>
        public void Pause()
        {
            if (_vfx != null)
            {
                m_iState = GFX_STATE.ST_PAUSE;
                _vfx.Pause();
            }
        }

        /// <summary>
        /// Clear all VFX particles
        /// </summary>
        public void Clear()
        {
            if (_vfx != null)
            {
                _vfx.Clear();
            }
        }

        /// <summary>
        /// 重新开始播放 / Restart VFX
        /// </summary>
        public void Restart()
        {
            if (_vfx != null)
            {
                _vfx.Stop();
                _vfx.Clear();
                _vfx.Play();
                
                // 重置生命周期计时器 / Reset lifetime timer
                m_iState = GFX_STATE.ST_PLAY;
                _elapsedTime = 0f;
                _lifetimeCompleted = false;
            }
        }

        /// <summary>
        /// 检查特效是否正在播放 / Check if VFX is playing
        /// </summary>
        public bool IsPlaying()
        {
            return m_iState == GFX_STATE.ST_PLAY;
        }

        /// <summary>
        /// Set lifetime duration
        /// </summary>
        /// <param name="lifeTime">生命周期时长（秒），-1表示无限 / Lifetime in seconds, -1 for infinite</param>
        public void SetLifeTime(float lifeTime)
        {
            _lifeTime = lifeTime;
            _elapsedTime = 0f;
            _lifetimeCompleted = false;
        }

        /// <summary>
        /// Get lifetime duration
        /// </summary>
        public float GetLifeTime()
        {
            return _lifeTime;
        }

        /// <summary>
        /// Get elapsed time
        /// </summary>
        public float GetElapsedTime()
        {
            return _elapsedTime;
        }

        /// <summary>
        /// Get remaining lifetime
        /// </summary>
        public float GetRemainingLifeTime()
        {
            if (_lifeTime <= 0)
                return -1f;
            
            return Mathf.Max(0f, _lifeTime - _elapsedTime);
        }

        /// <summary>
        /// Check if lifetime is completed
        /// </summary>
        public bool IsLifetimeCompleted()
        {
            return _lifetimeCompleted;
        }
    }
}