system_info_utils.hpp

#pragma once

#include "string_utilities/string_utils.hpp"

#include <string>
#include <stdexcept>
#include <sstream>

#if defined(_WIN32) || defined (__WIN32__)
#include <windows.h>
#elif defined (__linux__)
#include <fstream>
#endif

namespace sysinfoutils
{
    /**
     * @brief Returns the version of the OS.
     * 
     * @return std::string
     */
    inline std::string get_os_version()
    {
#if defined(_WIN32) || defined (__WIN32__)
        std::stringstream ss;
        SYSTEM_INFO sysInfo;
        // Get system information
        GetSystemInfo(&sysInfo);
        
        ss << "Windows " LOBYTE(sysInfo.dwMajorVersion) << "." << HIBYTE(sysInfo.dwMajorVersion);
        return ss.str();
#elif defined(__linux__)
        std::ifstream file("/proc/version_signature");
        std::string line;
        if (file.is_open()) {
            std::getline(file, line);
            file.close();
            return line;
        }
        return "OS not detected";
#endif
    }
    
    /**
     * @brief Returns the CPU make and model.
     * 
     * @return std::string
     */
    inline std::string get_cpu_info()
    {
#if defined(_WIN32) || defined (__WIN32__)
        std::stringstream ss;
        SYSTEM_INFO sysInfo;
        // Get system information
        GetSystemInfo(&sysInfo);

        ss << sysInfo.dwNumberOfProcessors << " cores, " << sysInfo.dwProcessorSpeed / 1000 << " MHz";
        return ss.str();
#elif defined(__linux__)
        std::ifstream file("/proc/cpuinfo");
        std::string line;
        if (file.is_open()) {
            for (int i = 0; i < 5; ++i)    
                std::getline(file, line);
            file.close();
            return strutils::strip_non_printable(line.substr(line.find(":") + 1));
        }
        return "cpu info not detected";
#endif
    }

    /**
     * @brief Returns the total amount of RAM.
     * 
     * @return std::string
     */
    inline std::string get_ram_info()
    {
#if defined(_WIN32) || defined (__WIN32__)
        std::stringstream ss;
        SYSTEM_INFO sysInfo;
        // Get system information
        GetSystemInfo(&sysInfo);
        // Convert RAM size from bytes to Gigabytes
        DWORD ramSizeGb = sysInfo.dwTotalPhysicalMem / (1024 * 1024 * 1024);

        ss << ramSizeGb << " GB RAM";
        return ss.str();
#elif defined(__linux__)
        std::ifstream file("/proc/meminfo");
        std::string line;
        if (file.is_open()) {
            std::getline(file, line);
            file.close();
            return strutils::strip_non_printable(line.substr(line.find(":") + 1));
        }
        return "RAM info not detected";
#endif
    }
    
}