using System;
using System.Collections;
using System.Collections.Generic;
using Ichni.RhythmGame.Beatmap;
using Sirenix.OdinInspector;
using UniRx;

namespace Ichni.RhythmGame
{
    public partial class Track : GameElement, IHaveTransformSubmodule, IHaveTimeDurationSubmodule
    {
        public TransformSubmodule transformSubmodule { get; set; }
        public TimeDurationSubmodule timeDurationSubmodule { get; set; }
        public TrackPathSubmodule trackPathSubmodule { get; set; }
        public TrackTimeSubmodule trackTimeSubmodule { get; set; }
        public TrackRendererSubmodule trackRendererSubmodule { get; set; }

        public static Track GenerateElement(string elementName, Guid id, List<string> tags, bool isFirstGenerated, GameElement parentElement)
        {
            Track track = Instantiate(GameManager.instance.basePrefabs.track, parentElement.transform).GetComponent<Track>();
            track.Initialize(elementName, id, tags, isFirstGenerated, parentElement);
            if (parentElement is ElementFolder folder)
            {
                folder.trackList.Add(track);
            }

            return track;
        }

        [Button]
        public override void SetDefaultSubmodules()
        {
            transformSubmodule = new TransformSubmodule(this);
            timeDurationSubmodule = new TimeDurationSubmodule(this);
            trackPathSubmodule = new TrackPathSubmodule(this, TrackSpaceType.CatmullRom, TrackSamplingType.TimeDistributed, false, false);
            trackTimeSubmodule = null;
            trackRendererSubmodule = null;
        }
        
        private void Update()
        {
            if (!GameManager.instance.audioManager.isUpdating)
            {
                return;
            }
            
            if (timeDurationSubmodule.CheckTimeInDuration(GameManager.instance.songTime))
            {
                (trackTimeSubmodule as TrackTimeSubmoduleMovable)?.UpdateTrackPart();
            }
        }

        private void LateUpdate()
        {
            if(trackPathSubmodule != null) trackPathSubmodule.refreshedThisFrame = false;
        }

        public override void AfterInitialize()
        {
            base.AfterInitialize();
            
            if (trackPathSubmodule != null && trackPathSubmodule.pathNodeList.Count > 3)
            {
                trackPathSubmodule.ClosePath();
            }

            if(trackRendererSubmodule != null)
            {
                trackRendererSubmodule.meshGenerator.autoUpdate = false;
            }
        }

        public override void BeforeStart()
        {
            switch (trackPathSubmodule.trackSpaceType)
            {
                case Track.TrackSpaceType.CatmullRom:
                    trackPathSubmodule.GenerateCatmullRomSpline();
                    break;
                case Track.TrackSpaceType.Linear:
                    trackPathSubmodule.GenerateLinearSpline();
                    break;
                case Track.TrackSpaceType.BSpline:
                    trackPathSubmodule.GenerateBSpline();
                    break;
            }
            base.BeforeStart();
        }


        public override void Refresh()
        {
            base.Refresh();
            trackPathSubmodule?.Refresh();
            trackTimeSubmodule?.Refresh();
            trackRendererSubmodule?.Refresh();
        }

        public override void OnDelete()
        {
            if (parentElement is ElementFolder folder) folder.trackList.Remove(this);
        }
    }

    public partial class Track
    {
        public override void SaveBM()
        {
            matchedBM = new Track_BM(elementName, elementGuid, tags, parentElement.matchedBM as GameElement_BM);
        }
    }

    public partial class Track
    {
        public enum TrackSpaceType
        {
            CatmullRom = 0,
            BSpline = 1,
            Linear = 3
        }

        public enum TrackSamplingType
        {
            TimeDistributed = 0,
            DistanceDistributed = 1
        }
    }

    namespace Beatmap
    {
        public class Track_BM : GameElement_BM
        {
            public Track_BM()
            {

            }

            public Track_BM(string elementName, Guid elementGuid, List<string> tags, GameElement_BM attachedElement)
                : base(elementName, elementGuid, tags, attachedElement)
            {

            }

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