using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
using Ichni.RhythmGame;
using UniRx;
using UnityEngine;
using UnityEngine.Serialization;

namespace Ichni.Editor
{
    public partial class TimePointerModule : MonoBehaviour
    {
        private Timeline timeline => EditorManager.instance.uiManager.timeline;
        private SongInformation songInformation => EditorManager.instance.songInformation;

        public GameObject timePointerPrefab;
        public List<TimePointer> timePointerList;
        public List<TimePointer> ActivePointer => timePointerList.FindAll(pointer => pointer.isInScreen);
        private TimePointer NowPointer;

        public RectTransform moveTabPoint;
        public RectTransform timePointerContainer;
        public RectTransform rightSide;
        public float timePointerInterval = 100f;

        public void Start()
        {
            timePointerInterval = 100f;
            EditorManager.instance.uiManager.timeline.timePointerModule = this;
            OnceSpawn();
        }
        public void OnceSpawn()
        {
            for (int i = timePointerList.Count - 1; i >= 0; i--)
            {
                Destroy(timePointerList[i].gameObject);
            }
            timePointerList.Clear();
            for (int i = 0; i < songInformation.songLength / timeline.timePerBeat; i++)
            {
                TimePointer timePointer = Instantiate(timePointerPrefab, timePointerContainer).GetComponent<TimePointer>();
                timePointerList.Add(timePointer);
                timePointer.time = i * timeline.timePerBeat;
                timePointer.intervalUnitText.text = (i * timeline.timePerBeat).ToString("F3");
                timePointer.GetComponent<RectTransform>().localPosition = new Vector3(i * timePointerInterval, 0f, 0f);
                timePointer.index = i;
            }
            // for (int i = -1; i > -songInformation.delay / timeline.timePerBeat; i--)
            // {
            //     TimePointer timePointer = Instantiate(timePointerPrefab, timePointerContainer).GetComponent<TimePointer>();
            //     timePointerList.Insert(0, timePointer);

            //     timePointer.intervalUnitText.text = (i * timeline.timePerBeat).ToString("F3");
            //     timePointer.GetComponent<RectTransform>().localPosition = new Vector3(i * timePointerInterval, 0f, 0f);
            //     timePointer.index = i;
            //     timePointer.gameObject.SetActive(false);
            // }

        }
        public void SortPos()
        {
            foreach (var i in timePointerList)
            {
                i.GetComponent<RectTransform>().localPosition = new Vector3(i.index * timePointerInterval, 0f, 0f);
            }
        }
        public void Update()
        {
            timePointerContainer.localPosition = new Vector3(-EditorManager.instance.songInformation.songTime / timeline.timePerBeat * timePointerInterval, timePointerContainer.localPosition.y, 0f);
            if (NowPointer == null)
            {
                NowPointer = timePointerList[0];
            }
            else
            {
                while (NowPointer.index < timePointerList.Count - 1 && NowPointer.index * timeline.timePerBeat < EditorManager.instance.songInformation.songTime)
                {
                    NowPointer.isInScreen = false;
                    NowPointer = timePointerList[NowPointer.index + 1];
                }
                while (NowPointer.index > 0 && NowPointer.index * timeline.timePerBeat >= EditorManager.instance.songInformation.songTime)
                {
                    NowPointer.isInScreen = true;
                    NowPointer = timePointerList[NowPointer.index - 1 >= 0 ? NowPointer.index - 1 : 0];
                }
            }
            for (int i = NowPointer.index + 1; i < timePointerList.Count; i++)
            {
                timePointerList[i].isInScreen = true;
                if (timePointerList[i].GetComponent<RectTransform>().position.x > rightSide.position.x)
                {
                    timePointerList[i].isInScreen = false;

                    break;
                }
            }

        }

    }
}