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
{
    /// <summary>
    /// 在轨道上根据百分比进行运动的点
    /// </summary>
    public partial class TrackPercentPoint : GameElement, IHaveTimeDurationSubmodule
    {
        public Track track;
        public SplinePositioner trackPositioner;
        public FlexibleFloat trackPercent;

        public TimeDurationSubmodule timeDurationSubmodule { get; set; }

        private bool isBeyond1 = false;

        public static TrackPercentPoint GenerateElement(string elementName, Guid id, List<string> tags,
            bool isFirstGenerated,
            Track track, FlexibleFloat trackPercent)
        {
            TrackPercentPoint point = Instantiate(EditorManager.instance.basePrefabs.emptyObject, track.transform)
                .AddComponent<TrackPercentPoint>();

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

            point.isBeyond1 = trackPercent.animations.Any(animation => animation.endValue > 1); //判断是否有超过1的动画，超过1将会循环

            return point;
        }

        protected override void SetDefaultSubmodules()
        {
            timeDurationSubmodule = new TimeDurationSubmodule(this);
            submoduleList.Add(timeDurationSubmodule);
        }

        public void Update()
        {
            if (trackPercent.animations.Count > 0)
            {
                trackPercent.UpdateFlexibleFloat(EditorManager.instance.songModule.songTime);
                if (trackPercent.returnType == FlexibleReturnType.MiddleExecuting)
                {
                    float finalValue = trackPercent.value;

                    if (isBeyond1)
                    {
                        finalValue -= Mathf.Floor(finalValue);
                    }

                    trackPositioner.SetPercent(finalValue);
                }
            }
        }
    }

    public partial class TrackPercentPoint
    {
        public override void SaveBM()
        {
            matchedBM = new TrackPercentPoint_BM(elementName, elementGuid, tags,
                parentElement.matchedBM as GameElement_BM,
                trackPercent.ConvertToBM());
        }
    }

    namespace Beatmap
    {
        public class TrackPercentPoint_BM : GameElement_BM
        {
            public FlexibleFloat_BM trackPercent;

            public TrackPercentPoint_BM()
            {

            }

            public TrackPercentPoint_BM(string elementName, Guid elementGuid, List<string> tags,
                GameElement_BM attachedElement, FlexibleFloat_BM trackPercent)
                : base(elementName, elementGuid, tags, attachedElement)
            {
                this.trackPercent = trackPercent;
            }

            public override void ExecuteBM()
            {
                matchedElement = TrackPercentPoint.GenerateElement(elementName, elementGuid, tags, false,
                    GetElement(attachedElementGuid) as Track, trackPercent.ConvertToGameType());
            }

            public override GameElement DuplicateBM(GameElement parent)
            {
                return TrackPercentPoint.GenerateElement(elementName, elementGuid, tags, false, parent as Track,
                    trackPercent.ConvertToGameType());
            }
        }
    }
}