using UnityEngine;
using BaseGames.Core;

namespace BaseGames.Platform
{
    /// <summary>
    /// 平台服务引导组件（架构 16_SupportingModules §3.1）。
    /// 在场景加载最早阶段（DefaultExecutionOrder = -200）检测平台并向 ServiceLocator 注入实现。
    /// ⚠️ 使用 PlatformBootstrap MonoBehaviour + ServiceLocator 模式，非静态 PlatformManager。
    /// </summary>
    [DefaultExecutionOrder(-200)]
    public class PlatformBootstrap : MonoBehaviour
    {
        private IPlatformService _platform;

        private async void Awake()
        {
            IPlatformService service;

#if UNITY_STANDALONE && STEAMWORKS_NET
            service = new SteamPlatformService();
#else
            service = new NullPlatformService();
#endif

            bool ok = await service.InitializeAsync();
            if (!ok)
            {
                Debug.LogWarning("[PlatformBootstrap] 平台服务初始化失败，退回到 NullPlatformService。");
                service = new NullPlatformService();
            }

            ServiceLocator.Register<IPlatformService>(service);
            _platform = service;
            Debug.Log($"[PlatformBootstrap] 已注册 {service.GetType().Name}。");
        }

        private void Update() => _platform?.RunCallbacks();

        private void OnApplicationQuit() => _platform?.Shutdown();
    }
}