using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UniRx;
using UnityEngine;

namespace Ichni.RhythmGame
{
    public class NoteManager : MonoBehaviour
    {
        public static NoteManager instance;
        public List<(NoteBase note, float activationTime, float finishTime)> pendingNotes = new List<(NoteBase, float, float)>();
        private List<(NoteBase note1, bool isActive, float activationTime)> ProcessingNotes = new List<(NoteBase, bool, float)>();
        public void RegisterNote(NoteBase note, float activationTime, float finishTime)
        {
            pendingNotes.Add((note, activationTime, finishTime));
            AllNotesRegistered();
            print($"Registered note {note.elementName} with activation time {activationTime} and finish time {finishTime}");
        }
        public void Awake()
        {
            instance = this;
        }
        public void ChangeNoteInfo(NoteBase note, float activationTime, float finishTime)
        {
            int idx = pendingNotes.FindIndex(i => i.note == note);
            if (idx != -1)
            {
                var one = pendingNotes[idx];
                one.finishTime = finishTime;
                one.activationTime = activationTime;
                pendingNotes[idx] = one;
                AllNotesRegistered();
            }
        }
        // 在所有物体注册完毕后，对列表进行一次排序
        public void AllNotesRegistered()
        {
            pendingNotes.Sort((a, b) => a.activationTime.CompareTo(b.activationTime));
        }

        void Update()
        {
            float currentTime = EditorManager.instance.songInformation.songTime;

            foreach (var item in ProcessingNotes)
            {
                var (note, isActive, activationTime) = item;
                if (!isActive) note.Update();
                note.gameObject.SetActive(isActive);
                if (isActive)
                {
                    note.Update();
                    if (currentTime < activationTime)
                    {
                        note.noteVisual?.Recover();

                    }
                    else if (note is Hold hold && currentTime >= hold.holdEndTime)
                    {
                        hold.SetFinishEffects();
                    }
                }
            }
            ProcessingNotes.Clear();

            // 一次性移除所有 null 项
            pendingNotes.RemoveAll(item => item.note == null);

            foreach (var item in pendingNotes)
            {
                var (note, activationTime, finishTime) = item;
                bool shouldBeActive = currentTime >= activationTime && currentTime <= finishTime;
                bool isActive = note.gameObject.activeSelf;

                if (shouldBeActive && !isActive)
                {
                    ProcessingNotes.Add((note, true, activationTime));

                }
                else if (!shouldBeActive && isActive)
                {
                    ProcessingNotes.Add((note, false, activationTime));
                }
            }


        }
    }
}