using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Dreamteck.Splines;
using Lean.Pool;
using Unity.Mathematics;
using Unity.VisualScripting;
using UnityEngine;

namespace Ichni.RhythmGame
{
    public class Displacement : AnimationBase
    {
        public TransformSubmodule targetTransformSubmodule;
        public FlexibleFloat positionX, positionY, positionZ;

        public static Displacement GenerateElement(string elementName, BaseElement targetObject,
            FlexibleFloat positionX, FlexibleFloat positionY, FlexibleFloat positionZ)
        {
            Displacement displacement = LeanPool.Spawn(new GameObject()).AddComponent<Displacement>();//TODO: 替换 new GameObject();

            displacement.NewInitialize(elementName, targetObject);
            
            displacement.positionX = positionX;
            displacement.positionY = positionY;
            displacement.positionZ = positionZ;
            displacement.animationReturnType = FlexibleReturnType.Before;
            
            if (targetObject.transformSubmodule != null)
            {
                displacement.targetTransformSubmodule = targetObject.transformSubmodule;
            }
            else
            {
                throw new System.Exception("Target object does not have a TransformSubmodule");
            }
            
            displacement.SetTimeDuration();
            
            return displacement;
        }

        public override void SetTimeDuration()
        {
            positionX.Sort();
            positionY.Sort();
            positionZ.Sort();

            List<float> startTimes = new List<float>();
            List<float> endTimes = new List<float>();
            
            if (positionX.animations.Count > 0)
            {
                startTimes.Add(positionX.animations[0].startTime);
                endTimes.Add(positionX.animations[^1].endTime);
            }

            if (positionY.animations.Count > 0)
            {
                startTimes.Add(positionY.animations[0].startTime);
                endTimes.Add(positionY.animations[^1].endTime);
            }

            if (positionZ.animations.Count > 0)
            {
                startTimes.Add(positionZ.animations[0].startTime);
                endTimes.Add(positionZ.animations[^1].endTime);
            }

            float startTime = startTimes.Min();
            float endTime = endTimes.Max();

            timeDurationSubmodule = new TimeDurationSubmodule(startTime, endTime);
        }

        protected void Update()
        {
            if (timeDurationSubmodule.CheckTimeInDuration(EditorManager.instance.songModule.songTime))
            {
                UpdateAnimation(EditorManager.instance.songModule.songTime);
            }
        }

        public override void UpdateAnimation(float songTime)
        {
            positionX.UpdateFlexibleFloat(songTime);
            positionY.UpdateFlexibleFloat(songTime);
            positionZ.UpdateFlexibleFloat(songTime);

            if (positionX.returnType is FlexibleReturnType.MiddleExecuting || 
                positionY.returnType is FlexibleReturnType.MiddleExecuting || 
                positionZ.returnType is FlexibleReturnType.MiddleExecuting)
            {
                animationReturnType = FlexibleReturnType.MiddleExecuting;
                Vector3 currentPosition = new Vector3(positionX.value, positionY.value, positionZ.value);
                targetTransformSubmodule.positionOffset.Add(currentPosition);
                targetTransformSubmodule.positionDirtyMark = true;
            }
            
            //本体使用，用于判断动画是否结束
            // else if (positionX.returnType is FlexibleReturnType.After or FlexibleReturnType.None &&
            //          positionY.returnType is FlexibleReturnType.After or FlexibleReturnType.None &&
            //          positionZ.returnType is FlexibleReturnType.After or FlexibleReturnType.None)
            // {
            //     animationReturnType = FlexibleReturnType.After;
            //     float3 currentPosition = new float3(positionX.value, positionY.value, positionZ.value);
            //     targetTransformSubmodule.positionOffset.Add(currentPosition);
            //     targetTransformSubmodule.positionDirtyMark = true;
            //     Destroy(gameObject);
            // }
        }
    }
}