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

namespace Ichni.RhythmGame
{
    public partial class TrackHeadPoint : GameElement, IHaveTimeDurationSubmodule
    {
        #region [暴露属性字段] Essential Configs
        public Track track;
        public bool motionApplyRotation;
        public Vector3 motionEulerAngles;
        #endregion

        #region [计算与状态缓存] Calculated & Cached States
        public TrackTimeSubmoduleMovable trackTimeSubmoduleMovable;
        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 TrackHeadPoint GenerateElement(string elementName, Guid id, List<string> tags,
            bool isFirstGenerated, Track track, bool motionApplyRotation, Vector3 motionEulerAngles)
        {
            TrackHeadPoint head = 
                LeanPool.Spawn(GameManager.Instance.basePrefabs.trackHeadPoint, track.transform).GetComponent<TrackHeadPoint>();

            head.Initialize(elementName, id, tags, isFirstGenerated, track);
            head.track = track;
            head.trackPositioner = head.gameObject.GetComponent<SplinePositioner>();
            head.trackPositioner.spline = track.trackPathSubmodule.path;
            head.trackTimeSubmoduleMovable = track.trackTimeSubmodule as TrackTimeSubmoduleMovable;
            
            head.motionApplyRotation = motionApplyRotation;
            head.trackPositioner.motion.applyRotation = motionApplyRotation;
            head.motionEulerAngles = motionEulerAngles;
            head.trackPositioner.motion.rotationOffset = motionEulerAngles;
            
            return head;
        }

        public override void SetDefaultSubmodules()
        {
            timeDurationSubmodule = new TimeDurationSubmodule(this);
        }
        
        public override void AfterInitialize()
        {
            GameManager.Instance.trackManager.RegisterHeadPoint(this);
            base.AfterInitialize();
        }
        #endregion

        #region [轮询更新] Main Update
        public void ManualUpdate(float currentSongTime)
        {
            if (track.timeDurationSubmodule.CheckTimeInDuration(currentSongTime))
            {
                trackPositioner.SetPercent(trackTimeSubmoduleMovable.headPercent);
            }
            
            if(track.timeDurationSubmodule.CheckAfterEndTime(currentSongTime))
            {
                GameManager.Instance.trackManager.UnregisterHeadPoint(this);
            }
        }
        #endregion
    }

}