using System;
using System.Collections;
using System.Collections.Generic;
using Dreamteck.Splines;
using Ichni.RhythmGame.Beatmap;
using Unity.VisualScripting;
using UnityEngine;

namespace Ichni.RhythmGame
{
    public partial class TrackPathSubmodule : TrackSubmodule
    {
        public SplineComputer path;
        public List<PathNode> pathNodeList;

        public Track.TrackSpaceType trackSpaceType;
        public Track.TrackSamplingType trackSamplingType;
        public bool isClosed;

        public bool refreshedThisFrame = false;
        
        public bool isShowingDisplay;

        public TrackPathSubmodule(Track track, Track.TrackSpaceType trackSpaceType,
            Track.TrackSamplingType trackSamplingType, bool isClosed, bool isShowingDisplay) : base(track)
        {
            this.path = track.AddComponent<SplineComputer>();
            
            this.pathNodeList = new List<PathNode>();
            this.trackSpaceType = trackSpaceType;
            this.trackSamplingType = trackSamplingType;
            this.isClosed = isClosed;

            this.path.sampleRate = 16;
            this.path.updateMode = SplineComputer.UpdateMode.LateUpdate;
            SetUpSplineComputer(this.trackSpaceType, this.trackSamplingType);
            //闭合路径在PathNode生成时执行，在初始化的情况下，PathNode数量为0，不会执行闭合操作

            this.isShowingDisplay = isShowingDisplay;

            if (!HaveSameSubmodule)
            {
                this.track.trackPathSubmodule = this;
            }
        }
    }

    public partial class TrackPathSubmodule
    {
        private void SetUpSplineComputer(Track.TrackSpaceType trackSpaceType, Track.TrackSamplingType trackSamplingType)
        {
            path.type = (Spline.Type)trackSpaceType;
            path.sampleMode = (SplineComputer.SampleMode)(int)trackSamplingType;
            path.space = SplineComputer.Space.Local;
        }

        public void ClosePath()
        {
            if (isClosed)
            {
                path.Close();
            }
            else
            {
                path.Break();
            }
        }

        public void SetTrackSpaceType(int spaceType)
        {
            int SpaceType = spaceType;
            if (spaceType == 2) SpaceType++;
            trackSpaceType = (Track.TrackSpaceType)SpaceType;
            path.type = (Spline.Type)SpaceType;
        }

        public void SetPathNode(PathNode point)
        {
            path.SetPoint(point.index, point.node, SplineComputer.Space.Local);
        }

        public override void Refresh()
        {
            if(refreshedThisFrame) return;
            refreshedThisFrame = true;
            
            SetTrackSpaceType((int)trackSpaceType);
            SetUpSplineComputer(trackSpaceType, trackSamplingType);
            foreach (var pathNode in pathNodeList)
            {
                SetPathNode(pathNode);
            }
            ClosePath();
            path.RebuildImmediate(true, true);
        }
    }

    public partial class TrackPathSubmodule
    {
        public override void SaveBM()
        {
            matchedBM = new TrackPathSubmodule_BM(attachedGameElement, this);
        }
    }

    namespace Beatmap
    {
        public class TrackPathSubmodule_BM : Submodule_BM
        {
            public Track.TrackSpaceType trackSpaceType;
            public Track.TrackSamplingType trackSamplingType;
            public bool isClosed;
            public bool isShowingDisplay;

            public TrackPathSubmodule_BM()
            {

            }


            public TrackPathSubmodule_BM(GameElement attachedElement, TrackPathSubmodule trackPathSubmodule) : base(
                attachedElement)
            {
                this.trackSpaceType = trackPathSubmodule.trackSpaceType;
                this.trackSamplingType = trackPathSubmodule.trackSamplingType;
                this.isClosed = trackPathSubmodule.isClosed;
                this.isShowingDisplay = trackPathSubmodule.isShowingDisplay;
            }

            public override void ExecuteBM()
            {
                attachedElement = GameElement_BM.GetElement(attachedElementGuid);
                Track track = attachedElement as Track;
                track.trackPathSubmodule = new TrackPathSubmodule(track, trackSpaceType, trackSamplingType, isClosed, isShowingDisplay);
            }
        }

    }
}