#include <Windows.h>
#include <iostream>
#include <comdef.h>
#include <Wbemidl.h>

#pragma comment(lib, "wbemuuid.lib")

int net_nat() {
    HRESULT hr;

    // Initialize COM
    hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
    if (FAILED(hr)) {
        std::cout << "Failed to initialize COM" << std::endl;
        return 1;
    }

    // Initialize security
    hr = CoInitializeSecurity(NULL,
                              -1,
                              NULL,
                              NULL,
                              RPC_C_AUTHN_LEVEL_DEFAULT,
                              RPC_C_IMP_LEVEL_IMPERSONATE,
                              NULL,
                              EOAC_NONE,
                              NULL);
    if (FAILED(hr)) {
        std::cout << "Failed to initialize security" << std::endl;
        CoUninitialize();
        return 1;
    }

    // Obtain the initial locator to WMI
    IWbemLocator *pLocator = NULL;
    hr                     = CoCreateInstance(CLSID_WbemLocator,
                          0,
                          CLSCTX_INPROC_SERVER,
                          IID_IWbemLocator,
                          reinterpret_cast<LPVOID *>(&pLocator));
    if (FAILED(hr)) {
        std::cout << "Failed to create IWbemLocator object" << std::endl;
        CoUninitialize();
        return 1;
    }

    // Connect to the root\StandardCimv2 namespace with the current user
    IWbemServices *pServices = NULL;
    hr = pLocator->ConnectServer(_bstr_t(L"ROOT\\StandardCimv2"), NULL, NULL, 0, NULL, 0, 0, &pServices);
    if (FAILED(hr)) {
        std::cout << "Failed to connect to WMI namespace" << std::endl;
        pLocator->Release();
        CoUninitialize();
        return 1;
    }

    // Set the authentication information to the current user
    hr = CoSetProxyBlanket(pServices,
                           RPC_C_AUTHN_WINNT,
                           RPC_C_AUTHZ_NONE,
                           NULL,
                           RPC_C_AUTHN_LEVEL_CALL,
                           RPC_C_IMP_LEVEL_IMPERSONATE,
                           NULL,
                           EOAC_NONE);
    if (FAILED(hr)) {
        std::cout << "Failed to set proxy blanket" << std::endl;
        pServices->Release();
        pLocator->Release();
        CoUninitialize();
        return 1;
    }

    // Get the NAT class object
    IWbemClassObject *pClass = NULL;
    hr                       = pServices->GetObject(_bstr_t("MSFT_NetNat"), 0, NULL, &pClass, NULL);
    if (FAILED(hr)) {
        std::cout << "Failed to get NAT class object" << std::endl;
        pServices->Release();
        pLocator->Release();
        CoUninitialize();
        return 1;
    }

    // Spawn an instance of the NAT class
    IWbemClassObject *pInstance = NULL;
    hr                          = pClass->SpawnInstance(0, &pInstance);
    if (FAILED(hr)) {
        std::cout << "Failed to spawn NAT instance" << std::endl;
        pClass->Release();
        pServices->Release();
        pLocator->Release();
        CoUninitialize();
        return 1;
    }

    // Set the properties of the NAT instance
    VARIANT var;
    VariantInit(&var);

    // Set the name of the NAT instance
    var.vt      = VT_BSTR;
    var.bstrVal = SysAllocString(L"MyNATRule");
    hr          = pInstance->Put(L"Name", 0, &var, 0);
    if (FAILED(hr)) {
        std::cout << "Failed to set NAT instance name" << std::endl;
        VariantClear(&var);
        pInstance->Release();
        pClass->Release();
        pServices->Release();
        pLocator->Release();
        CoUninitialize();
        return 1;
    }

    // Set other properties as needed
    // ...

    // Create the NAT instance
    IWbemCallResult *pResult = NULL;
    hr                       = pServices->PutInstance(pInstance, WBEM_FLAG_CREATE_ONLY, NULL, &pResult);
    if (FAILED(hr)) {
        std::cout << "Failed to create NAT instance" << std::endl;
        VariantClear(&var);
        pInstance->Release();
        pClass->Release();
        pServices->Release();
        pLocator->Release();
        CoUninitialize();
        return 1;
    }

    // Cleanup
    VariantClear(&var);
    pResult->Release();
    pInstance->Release();
    pClass->Release();
    pServices->Release();
    pLocator->Release();
    CoUninitialize();

    std::cout << "NAT rule created successfully" << std::endl;

    return 0;
}