using UnityEngine;

namespace Cielonos.MainGame
{
    /// <summary>
    /// 挂载在敌人等 GameObject 上的局部节奏追踪组件，用来追踪该物体上独立播放的 Wwise Segment。
    /// </summary>
    [AddComponentMenu("Cielonos/Rhythm/LocalRhythmTracker")]
    public class LocalRhythmTracker : MonoBehaviour, ILocalRhythmTracker
    {
        public MusicBeatData CurrentBeatData { get; private set; }
        public float CurrentSongTime { get; private set; }
        public bool IsPlaying { get; private set; }

        private float pendingSyncTime = -1f;

        private void OnEnable()
        {
            // 自动将自身注册到全局物体映射表中，使 Wwise 回调能识别此 GameObject
            MusicBeatSystem.RegisterRhythmGameObject(gameObject);
        }

        private void OnDisable()
        {
            MusicBeatSystem.UnregisterRhythmGameObject(gameObject);
        }

        public void OnSegmentTransitioned(MusicBeatData localBeatData)
        {
            CurrentBeatData = localBeatData;
            CurrentSongTime = localBeatData != null ? localBeatData.audioStartOffset : 0f;
            IsPlaying = localBeatData != null;
            pendingSyncTime = -1f;
            Debug.Log($"[LocalRhythmTracker] Segment transitioned on '{gameObject.name}' to '{localBeatData?.name}'");
        }

        public void ReceiveSyncBeat(float musicPositionSec, float beatDuration)
        {
            float offset = CurrentBeatData != null ? CurrentBeatData.audioStartOffset : 0f;
            pendingSyncTime = musicPositionSec + offset;
        }

        private void Update()
        {
            if (CurrentBeatData == null) return;

            if (pendingSyncTime >= 0f)
            {
                CurrentSongTime = pendingSyncTime;
                pendingSyncTime = -1f;
                IsPlaying = true;
            }

            if (IsPlaying)
            {
                CurrentSongTime += Time.deltaTime;
            }
        }
    }
}