using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Dreamteck.Splines;
using Ichni.RhythmGame.Beatmap;
using Lean.Pool;
using UniRx;
using UnityEngine;

namespace Ichni.RhythmGame
{
    public partial class PathNode : GameElement, IHaveTransformSubmodule, IHaveTimeDurationSubmodule, IHaveColorSubmodule
    {
        #region [暴露属性字段] Essential Configs
        public Track track;
        public SplinePoint node;
        public bool isShowingSphere;
        public override int HierarchyPriority => -100;
        public bool haveEmission => false;
        #endregion

        #region [计算与状态缓存] Calculated & Cached States
        public int index => track.trackPathSubmodule.pathNodeList.IndexOf(this);
        #endregion

        #region [子模块接口] Submodules
        public TransformSubmodule transformSubmodule { get; set; }
        public TimeDurationSubmodule timeDurationSubmodule { get; set; }
        public ColorSubmodule colorSubmodule { get; set; }
        #endregion

        #region [生命周期] Lifecycle & Factory
        public static PathNode GenerateElement(string elementName, Guid id, List<string> tags, bool isFirstGenerated,
            Track track, bool isShowingSphere)
        {
            PathNode pathNode = LeanPool.Spawn(GameManager.Instance.basePrefabs.pathNode, track.transform).GetComponent<PathNode>();

            pathNode.Initialize(elementName, id, tags, isFirstGenerated, track);

            pathNode.track = track;
            
            pathNode.isShowingSphere = isShowingSphere;
            track.trackPathSubmodule.pathNodeList.Add(pathNode);
            track.trackPathSubmodule.SetPathNode(pathNode);
            return pathNode;
        }

        public override void AfterInitialize()
        {
            base.AfterInitialize();

            if (childElementList.Any(c => c is AnimationBase))
            {
                if(track.trackRendererSubmodule != null) track.trackRendererSubmodule.meshGenerator.autoUpdate = true;
            }
            else
            {
                //LeanPool.Despawn(gameObject);
            }
        }

        public override void SetDefaultSubmodules()
        {
            transformSubmodule = new TransformSubmodule(this);
            timeDurationSubmodule = new TimeDurationSubmodule(this);
            colorSubmodule = new ColorSubmodule(this);
        }
        #endregion
    }

    #region [行为重写] Behavior Overrides
    public partial class PathNode
    {
        public override void Refresh()
        {
            base.Refresh();
            Vector3 position = transformSubmodule.currentPosition;
            Vector3 normal = Quaternion.Euler(transformSubmodule.currentEulerAngles) * Vector3.up;
            float size = transformSubmodule.currentScale.x;
            Color color = colorSubmodule.currentBaseColor;

            transform.localPosition = position;
            transform.localRotation = Quaternion.LookRotation(normal);
            transform.localScale = Vector3.one * size;

            node = new SplinePoint(position, Vector3.up, normal, size, color);
            track.trackPathSubmodule.SetPathNode(this);
        }
    }
    #endregion

}