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

namespace Ichni.RhythmGame
{
    /// <summary>
    /// 在轨道上根据百分比进行运动的点
    /// </summary>
    public partial class TrackPercentPoint : GameElement, IHaveTimeDurationSubmodule
    {
        #region [暴露属性字段] Essential Configs
        public Track track;
        public FlexibleFloat trackPercent;
        #endregion

        #region [计算与状态缓存] Calculated & Cached States
        public SplinePositioner trackPositioner;
        #endregion

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

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

            point.Initialize(elementName, id, tags, isFirstGenerated, track);
            point.track = track;
            point.trackPositioner = point.gameObject.GetComponent<SplinePositioner>();
            point.trackPositioner.spline = track.trackPathSubmodule.path;
            point.trackPercent = trackPercent;

            point.trackPositioner.motion.applyRotation = false;
            return point;
        }

        public override void SetDefaultSubmodules()
        {
            timeDurationSubmodule = new TimeDurationSubmodule(this);
        }

        public override void AfterInitialize()
        {
            GameManager.Instance.trackManager.RegisterPercentPoint(this);
            base.AfterInitialize();
        }
        #endregion

        #region [轮询更新] Main Update
        public void ManualUpdate(float currentSongTime)
        {
            if (trackPercent.animations.Count > 0)
            {
                trackPercent.UpdateFlexibleFloat(currentSongTime);
                if (trackPercent.returnType == FlexibleReturnType.MiddleExecuting)
                {
                    float finalValue = trackPercent.value;
                    if (finalValue > 1 && finalValue > Mathf.Floor(finalValue)) finalValue -= Mathf.Floor(finalValue);
                    trackPositioner.SetPercent(finalValue);
                }
                
                if (trackPercent.returnType == FlexibleReturnType.After)
                {
                    trackPositioner.SetPercent(1);
                    GameManager.Instance.trackManager.UnregisterPercentPoint(this);
                }
            }
        }
        #endregion
    }

}