#include "platform.hpp"

#include <time.h>

#include <iomanip>
#include <iostream>
#include <sstream>

#include <typedefs.hpp>

#ifdef _WIN32
#include <Windows.h>

#include "stringutil.hpp"

void platform::configure_encoding() {
    // set utf-8 encoding to console output
    SetConsoleOutputCP(CP_UTF8);
    setvbuf(stdout, nullptr, _IOFBF, 1000);
}

std::string platform::detect_locale() {
    LCID lcid = GetThreadLocale();
    wchar_t preferredLocaleName[LOCALE_NAME_MAX_LENGTH];  // locale name format:
                                                          // ll-CC
    if (LCIDToLocaleName(
            lcid, preferredLocaleName, LOCALE_NAME_MAX_LENGTH, 0
        ) == 0) {
        std::cerr
            << "error in platform::detect_locale! LCIDToLocaleName failed."
            << std::endl;
    }
    // ll_CC format
    return util::wstr2str_utf8(preferredLocaleName)
        .replace(2, 1, "_")
        .substr(0, 5);
}

#else

void platform::configure_encoding() {
}

std::string platform::detect_locale() {
    std::string programLocaleName = setlocale(LC_ALL, nullptr);
    std::string preferredLocaleName =
        setlocale(LC_ALL, "");  // locale name format: ll_CC.encoding
    setlocale(LC_ALL, programLocaleName.c_str());

    return preferredLocaleName.substr(0, 5);
}

#endif