using System;
using System.Runtime.InteropServices;

namespace NetTunnelApp;

public enum ProtoCryptoType
{
    CRYPTO_NONE = 0,
    CRYPTO_BASE64 = 1,
    CRYPTO_AES128 = 2,
    CRYPTO_3DES = 3,
    CRYPTO_AES256 = 4
}

public enum LogLevel
{
    LOG_DEBUG = 0,
    LOG_INFO = 1,
    LOG_WARN = 2,
    LOG_ERROR = 3
}

public class NetTunnelLib
{
    [DllImport("NetTunnelSDK.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern int CreateTunnel(String lpszMsg);

    [DllImport("NetTunnelSDK.dll", CallingConvention = CallingConvention.Cdecl)]
    internal static extern IntPtr TestMessage();

    [DllImport("NetTunnelSDK.dll", CallingConvention = CallingConvention.Cdecl)]
    internal static extern Int32 Add(int a, int b);

    [DllImport("NetTunnelSDK.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern int TunnelSDKInitEnv();

    [DllImport("NetTunnelSDK.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern int SetProtocolEncryptType(ProtoCryptoType type, String pProKey);

    [DllImport("NetTunnelSDK.dll", CallingConvention = CallingConvention.Cdecl)]
    public static extern void InitTunnelSDKLog(String pProKey, LogLevel level);
}