using UnityEngine;

namespace TcgEngine
{
    [DisallowMultipleComponent]
    public class SteamManager : MonoBehaviour
    {
#if UNITY_STANDALONE_WIN || UNITY_STANDALONE_LINUX || UNITY_STANDALONE_OSX
        private static SteamManager s_instance;
        private bool m_bInitialized = false;

        public static bool Initialized
        {
            get { return s_instance != null && s_instance.m_bInitialized; }
        }

        void Awake()
        {
            // 单例检查
            if (s_instance != null)
            {
                Destroy(gameObject);
                return;
            }

            s_instance = this;
            DontDestroyOnLoad(gameObject);

            try
            {
#if STEAMWORKS_NET
                // 尝试加载 Steamworks.NET
                if (Steamworks.SteamAPI.RestartAppIfNecessary(new Steamworks.AppId_t(480)))
                {
                    Debug.LogWarning("[SteamManager] Steam 重启请求，退出当前实例。");
                    Application.Quit();
                    return;
                }

                m_bInitialized = Steamworks.SteamAPI.Init();

                if (m_bInitialized)
                {
                    Debug.Log("[SteamManager] Steam 初始化成功。");
                }
                else
                {
                    Debug.LogWarning("[SteamManager] SteamAPI.Init() 失败，将以离线模式运行。");
                }
#else
                // 没有定义 STEAMWORKS_NET 宏
                Debug.Log("[SteamManager] 未启用 Steamworks.NET，跳过初始化。");
#endif
            }
            catch (System.DllNotFoundException e)
            {
                Debug.LogWarning("[SteamManager] 未找到 steam_api64.dll，以离线模式运行。\n" + e.Message);
                m_bInitialized = false;
            }
            catch (System.Exception e)
            {
                Debug.LogError("[SteamManager] 初始化异常，将以离线模式运行。\n" + e);
                m_bInitialized = false;
            }
        }

        void Update()
        {
#if STEAMWORKS_NET
            if (m_bInitialized)
                Steamworks.SteamAPI.RunCallbacks();
#endif
        }

        void OnDestroy()
        {
            if (s_instance != this)
                return;

#if STEAMWORKS_NET
            if (m_bInitialized)
            {
                Steamworks.SteamAPI.Shutdown();
                Debug.Log("[SteamManager] Steam 已正常关闭。");
            }
#endif
            s_instance = null;
        }
#else
        // 非桌面平台（例如WebGL/Android/iOS）
        public static bool Initialized => false;
#endif
    }
}