using System;
using System.Collections;
using System.Collections.Generic;
using Ichni.RhythmGame.Beatmap;
using Sirenix.OdinInspector;
using UnityEngine;

namespace Ichni.RhythmGame
{
    public abstract partial class GameElement : SerializedMonoBehaviour, IBaseElement
    {
        //物体名
        public string elementName;

        //标识 GUID
        public Guid elementGuid;

        //标签
        public List<string> tags;

        //父游戏物体
        public GameElement parentElement;

        //子物体列表
        public List<GameElement> childElementList = new List<GameElement>();

        //次级模块
        public List<SubmoduleBase> submoduleList = new List<SubmoduleBase>();
        
        //存档类
        public BaseElement_BM matchedBM { get; set; }

        /// <summary>
        /// 首次初始化
        /// </summary>
        /// <param name="name">物体名</param>
        public virtual void Initialize(string name, Guid elementGuid, List<string> tags, bool isFirstGenerated)
        {
            this.elementName = name;
            this.elementGuid = elementGuid;
            this.tags = tags;
            EditorManager.instance.beatmapContainer.gameElementList.Add(this);
            submoduleList = new List<SubmoduleBase>();
            if (isFirstGenerated)
            {
                SetDefaultSubmodules();
            }
            //GameManager.beatMapContainer.beatMapElementList.Add(this);
            //serialNumber = totalSerialNumber++;
            //SetTransformObserver();
        }

        /// <summary>
        /// 设置次级模块
        /// </summary>
        protected abstract void SetDefaultSubmodules();

        /// <summary>
        /// 在所有物体生成完毕后，执行的初始化方法
        /// </summary>
        public virtual void AfterInitialize()
        {
            
        }

        /// <summary>
        /// 刷新物体的状态
        /// </summary>
        public virtual void Refresh()
        {
            
        }

        /// <summary>
        /// 设置父物体
        /// </summary>
        /// <param name="parentElement">父物体</param>
        public void SetParent(GameElement parentElement)
        {
            if (parentElement != null)
            {
                parentElement.childElementList.Add(this);
                this.parentElement = parentElement;
                transform.SetParent(parentElement.transform);
            }
        }
    }

    public abstract partial class GameElement //存档，删除，复制，粘贴
    {
        /// <summary>
        /// 用于生成存档
        /// </summary>
        public virtual void SaveBM()
        {
            throw new NotImplementedException();
        }
        
        /// <summary>
        /// 当物体被删除时执行的方法
        /// </summary>
        public virtual void OnDelete()
        {
            throw new NotImplementedException();
        }
        
       
        /// <summary>
        /// 删除物体，包括所有子物体
        /// </summary>
        public virtual void Delete()
        {
            if (this.childElementList != null)
            {
                for (int i = 0; i < childElementList.Count; i++)
                {
                    childElementList[i].Delete(); //删除子GameElement、
                }
            }

            OnDelete();

#if UNITY_EDITOR
            Debug.Log("Delete " + elementName + "(" + elementGuid + ")");
#endif
            EditorManager.instance.beatmapContainer.gameElementList.Remove(this); //从保存列表中剔除
            this.parentElement.childElementList.Remove(this);
            Destroy(gameObject); //销毁
        }
    }
    
    namespace Beatmap
    {
        [System.Serializable]
        public abstract class GameElement_BM : BaseElement_BM
        {
            [System.NonSerialized] 
            public static Dictionary<Guid, GameElement_BM> identifier = new(); //存档类的标识符
            
            [System.NonSerialized] 
            public GameElement matchedElement; //存档类对应的游戏物体
            
            public string elementName;
            public List<string> tags;
            public Guid elementGuid;
            public Guid attachedElementGuid;

            public GameElement_BM()
            {

            }

            public GameElement_BM(string elementName, Guid elementGuid, List<string> tags, GameElement_BM attachedElement)
            {
                this.elementName = elementName;
                this.elementGuid = elementGuid;
                this.tags = tags;

                this.attachedElementGuid = attachedElement?.elementGuid ?? Guid.Empty;

                identifier.TryAdd(this.elementGuid, this);
            }

            public static GameElement_BM GetElementBM(Guid id)
            {
                if (identifier.TryGetValue(id, out GameElement_BM element_BM))
                {
                    return element_BM;
                }
                
                return null;
            }
            
            public static GameElement GetElement(Guid id)
            {
                if(identifier.TryGetValue(id, out GameElement_BM element_BM))
                {
                    return element_BM.matchedElement;
                }
                
                return null;
            }

            /// <summary>
            /// 复制物体
            /// </summary>
            /// <param name="attached">（对于物体）父物体，（对于次级模块）或挂载物体</param>
            public abstract GameElement DuplicateBM(GameElement attached);
        }
    }
}