using UnityEngine;
using BaseGames.Core.Events;

namespace BaseGames.Core
{
    /// <summary>
    /// 在 Awake 时（最早执行）向 ServiceLocator 注册所有服务。
    /// 挂载在 Persistent 场景的根 GameObject 上。
    /// </summary>
    [DefaultExecutionOrder(-2000)]
    public class GameServiceRegistrar : MonoBehaviour
    {
        [SerializeField] private DeathRespawnService  _deathRespawnService;
        [SerializeField] private SceneService         _sceneService;
        [SerializeField] private EventChannelRegistry _eventChannelRegistry;

        private void Awake()
        {
            // 注册 NullAudioService 作为兜底；Phase 2 Audio 模块 Awake 后会用真实实现覆盖
            ServiceLocator.RegisterIfAbsent<IAudioService>(new NullAudioService());

            if (_deathRespawnService)
                ServiceLocator.Register<IDeathRespawnService>(_deathRespawnService);
            if (_sceneService)
                ServiceLocator.Register<ISceneService>(_sceneService);
            if (_eventChannelRegistry)
                ServiceLocator.Register<IEventChannelRegistry>(_eventChannelRegistry);
        }
    }
}