using System;
using System.Collections.Generic;
using UnityEngine;

namespace Thousandto.Launcher.ExternalLibs
{
    [Serializable]
    public class AnimInfo
    {
        [SerializeField]
        private string _name;
        [SerializeField]
        private string _path;
        [SerializeField]
        private AnimationClip _clip;
        [SerializeField]
        private bool _isSaveClip = true;


        private AnimationClip _tmpclip;
        public AnimationClip clip
        {
            get
            {
                if (_tmpclip == null)
                {
                    if (_clip != null)
                    {
                        _tmpclip = _clip;
                    }
                    else
                    {
                        _tmpclip = GetClip(_path);
                    }

                }
                return _tmpclip;
            }
        }

        public string path
        {
            get
            {
                if (string.IsNullOrEmpty(_path))
                {
                    return GetPath(clip);
                }
                return _path;
            }
        }
        public string name
        {
            get
            {

                if (string.IsNullOrEmpty(_name))
                {
                    return clip.name;
                }
                return _name;
            }

        }
        public bool IsSaveClip
        {
            get
            {
                return _isSaveClip;
            }
            set
            {
                if (_isSaveClip != value)
                {
                    _isSaveClip = value;
                    Reset();
                }
            }
        }


        public override string ToString()
        {
            return name;
        }

        private void Reset()
        {
            if (_isSaveClip)
            {
                _clip = clip;
                _name = String.Empty;
                _path = String.Empty;
            }
            else
            {
                _name = clip.name;
                _path = GetPath(clip);
                _clip = null;
            }
        }

        public static implicit operator AnimInfo(AnimationClip clip)
        {
            return AnimInfo.Create(clip);
        }

        public static AnimInfo Create(AnimationClip clip, bool isSaveClip = true)
        {
            var ai = new AnimInfo();
            ai._isSaveClip = isSaveClip;
            ai._tmpclip = clip;
            ai.Reset();
            return ai;
        }

        public static List<AnimInfo> Convert(List<AnimationClip> clips, bool isSaveClip = true)
        {
            return clips.ConvertAll<AnimInfo>(x =>
            {
                return Create(x, isSaveClip);
            });
        }

        public static List<AnimationClip> Convert(List<AnimInfo> clips)
        {
            if (clips == null) return new List<AnimationClip>();
            return clips.ConvertAll<AnimationClip>(x =>
            {
                return x.clip;
            });
        }

        public static void ChangedSaveClipFlag(List<AnimInfo> clips, bool isSaveClip)
        {
            if (clips == null) return;
            for (int i = 0; i < clips.Count; i++)
            {
                clips[i].IsSaveClip = isSaveClip;
            }
        }
        #region //编辑器使用

        //编辑器使用
#if UNITY_EDITOR
        [NonSerialized]
        public float playPos = 0;
        [NonSerialized]
        public bool isPlaying = false;
        
        public static Dictionary<string, AnimationClip> _playerClips = new Dictionary<string, AnimationClip>();
#endif

        public static string GetPath(AnimationClip ac)
        {
#if UNITY_EDITOR
            if (ac != null)
            {  
                return UnityEditor.AssetDatabase.GetAssetPath(ac);
            }
#endif
            return string.Empty;
        }


        public static AnimationClip GetClip(string path)
        {
#if UNITY_EDITOR
            if (!string.IsNullOrEmpty(path))
            {

                if (!_playerClips.ContainsKey(path))
                {
                    Debug.LogError("GetClip,LoadFromAsset:"+path);
                    _playerClips[path] = UnityEditor.AssetDatabase.LoadAssetAtPath<AnimationClip>(path);
                }
                return _playerClips[path];
            }
#endif
            return null;
        }

        public static List<AnimationClip> GetClips(IEnumerable<string> paths)
        {
            List<AnimationClip> result = new List<AnimationClip>();
#if UNITY_EDITOR
            var e = paths.GetEnumerator();
            while (e.MoveNext())
            {
                Debug.LogError("GetClip:::" + e.Current);
                var c = GetClip(e.Current);
                if (c != null)
                {
                    result.Add(c);
                }
            }
#endif
            return result;
        }

        public static void ClearClipsByEditor()
        {
#if UNITY_EDITOR
            if (_playerClips.Count > 300)
            {
                string[] keys = new string[_playerClips.Count];
                _playerClips.Keys.CopyTo(keys, 0);
                for (int i = 0; i < keys.Length; i++)
                {
                    if (keys[i].ToLower().IndexOf("player") < 0)
                    {
                        _playerClips.Remove(keys[i]);
                    }
                }
                Debug.LogError("清理Clips......");
            }
            Resources.UnloadUnusedAssets();
#endif
        }
#endregion
    }
}