using UnityEngine;
using Mirror;

public class PersistentNetworkManager : MonoBehaviour
{
    private static PersistentNetworkManager instance;
    private NetworkManager networkManager;
   
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    private void Awake()
    {
        // 單例模式:確保只有一個 NetworkManager 存在
        if (instance == null)
        {
            instance = this;
            DontDestroyOnLoad(gameObject);

            networkManager = GetComponent<NetworkManager>();
            if (networkManager != null)
            {
                // 確保 NetworkManager 也設置為不銷毀
                networkManager.dontDestroyOnLoad = true;
            }

            Debug.Log("NetworkManager 已設置為跨場景保持");
        }
        else
        {
            // 如果已經存在實例,銷毀這個重複的
            Debug.Log("NetworkManager 已存在,銷毀重複物件");
            Destroy(gameObject);
        }
    }

    /// <summary>
    /// 獲取 NetworkManager 實例
    /// </summary>
    public static NetworkManager GetNetworkManager()
    {
        if (instance != null)
        {
            return instance.networkManager;
        }
        return null;
    }

    /// <summary>
    /// 檢查是否已連線
    /// </summary>
    public static bool IsConnected()
    {
        return NetworkClient.isConnected;
    }

    /// <summary>
    /// 檢查是否為 Server
    /// </summary>
    public static bool IsServer()
    {
        return NetworkServer.active;
    }

    /// <summary>
    /// 清理連線(當需要完全重置時使用)
    /// </summary>
    public static void CleanupConnections()
    {
        if (NetworkServer.active)
        {
            NetworkManager.singleton.StopServer();
        }
        if (NetworkClient.isConnected)
        {
            NetworkManager.singleton.StopClient();
        }
    }
}