#include <windows.h>  
#include <iostream>  
#include <string>  
#include <vector>  

void PrintError(const std::string& msg) {
    DWORD err = GetLastError();
    std::cerr << "Error: " << msg << " (Code: " << err << ")" << std::endl;
}

int main() {
    // 1. Create a temporary file to test with  
    wchar_t tempPath[MAX_PATH];
    const wchar_t *tempFileName;

    tempFileName = L"z:\\tempfile.tmp";
    std::wcout << L"Created temp file: " << tempFileName << std::endl;

    // 2. Open a handle to the file  
    // Note: FILE_FLAG_BACKUP_SEMANTICS is often used for directories, but works for files too.  
    HANDLE hFile = CreateFileW( 
        tempFileName,
        GENERIC_READ,
        FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
        NULL,
        CREATE_ALWAYS,
        FILE_ATTRIBUTE_NORMAL,
        NULL
    );

    if (hFile == INVALID_HANDLE_VALUE) {
        PrintError("CreateFileW failed");
        return 1;
    }

    // 3. Call GetFinalPathNameByHandleW  
    // First call to get the required buffer size  
    DWORD requiredSize = GetFinalPathNameByHandleW(hFile, NULL, 0, VOLUME_NAME_GUID);

    if (requiredSize == 0) {
        PrintError("GetFinalPathNameByHandleW (size check) failed");
        CloseHandle(hFile);
        return 1;
    }

    std::vector<wchar_t> pathBuffer(requiredSize);

    // Second call to get the actual path  
    DWORD result = GetFinalPathNameByHandleW(hFile, pathBuffer.data(), requiredSize, VOLUME_NAME_GUID);

    if (result == 0) {
        PrintError("GetFinalPathNameByHandleW (retrieval) failed");
    }
    else {
        std::wcout << L"Final Path (VOLUME_NAME_DOS): " << pathBuffer.data() << std::endl;
    }

    // 4. Cleanup  
    CloseHandle(hFile);
    DeleteFileW(tempFileName); // Clean up the temp file  

    std::cout << "Press Enter to exit...";
    std::cin.get();

    return 0;
}