using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Sirenix.OdinInspector;
using UniRx;
using UnityEngine;

namespace Ichni.RhythmGame
{
    [System.Serializable]
    public abstract partial class BaseElement : SerializedMonoBehaviour
    {
        //物体名
        public string elementName;

        //序列号
        public int serialNumber;
        
        //标识 GUID
        public Guid elementGuid;

        //存档
        //public BaseElement_BM matchedBM;

        //父游戏物体
        public BaseElement parentElement;

        //子物体列表
        public List<BaseElement> childElementList = new List<BaseElement>();
        
        //次级模块
        public TimeDurationSubmodule timeDurationSubmodule;
        public TransformSubmodule transformSubmodule;
        public ColorSubmodule colorSubmodule;

        /// <summary>
        /// 首次初始化
        /// </summary>
        /// <param name="name">物体名</param>
        public virtual void NewInitialize(string name)
        {
            this.elementName = name;
            this.elementGuid = Guid.NewGuid();
            //GameManager.beatMapContainer.beatMapElementList.Add(this);
            //serialNumber = totalSerialNumber++;
            SetTransformObserver();
        }

        /// <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(BaseElement parentElement)
        {
            if (parentElement != null)
            {
                parentElement.childElementList.Add(this);
                this.parentElement = parentElement;
                transform.SetParent(parentElement.transform);
            }
        }
    }
    
    public abstract partial class BaseElement
    {
        private void Start()
        {
            SetTransformObserver();
        }

        public virtual void SetTimeDuration()
        {
            
        }
        
        [Button("Apply Time Duration From Child")]
        public void ApplyTimeDuration()
        {
            childElementList.ForEach(x => x.ApplyTimeDuration());

            timeDurationSubmodule?.SetDurationFromChildren(childElementList.Select(x=>x.timeDurationSubmodule).ToList());
        }

        /// <summary>
        /// 设置物体Transform的监听，顺序为Scale -> EulerAngles -> Position
        /// 如果有一些特殊的物体（例如Camera，ElementFolder），需要自定义监听，可以重写这个方法
        /// </summary>
        public virtual void SetTransformObserver()
        {
            Observable.EveryUpdate().Subscribe(_ =>
            {
                if (transformSubmodule == null)
                {
                    return;
                }

                if (transformSubmodule.scaleDirtyMark)
                {
                    Vector3 offset = Vector3.zero;
                    foreach (Vector3 scaleOffset in transformSubmodule.scaleOffset)
                    {
                        offset += scaleOffset;
                    }
                    transformSubmodule.currentScale = transformSubmodule.originalScale + offset;
                    transform.localScale = transformSubmodule.currentScale;
                    transformSubmodule.scaleDirtyMark = false;
                }
                
                if (transformSubmodule.eulerAnglesDirtyMark)
                {
                    Vector3 offset = Vector3.zero;
                    foreach (Vector3 eulerOffset in transformSubmodule.eulerAnglesOffset)
                    {
                        offset += eulerOffset;
                    }
                    transformSubmodule.currentEulerAngles = transformSubmodule.originalEulerAngles + offset;
                    transform.localEulerAngles = transformSubmodule.currentEulerAngles;
                    transformSubmodule.eulerAnglesDirtyMark = false;
                }
                
                if (transformSubmodule.positionDirtyMark)
                {
                    Vector3 offset = Vector3.zero;
                    foreach (Vector3 posOffset in transformSubmodule.positionOffset)
                    {
                        offset += posOffset;
                    }
                    transformSubmodule.currentPosition = transformSubmodule.originalPosition + offset;
                    transform.localPosition = transformSubmodule.currentPosition;
                    transformSubmodule.positionDirtyMark = false;
                }
                
                transformSubmodule.scaleOffset.Clear();
                transformSubmodule.eulerAnglesOffset.Clear();
                transformSubmodule.positionOffset.Clear();
            }).AddTo(gameObject);
        }
    }
}