#include "path_utils.hpp"
#include <optional>
#include <filesystem>
#ifdef _WIN32
# include <windows.h>
# include <tchar.h>
#endif

std::optional<std::filesystem::path> engine::path_utils::exe_path() noexcept {
#if defined(_WIN32)
    TCHAR filename[MAX_PATH];
    if (!GetModuleFileName(NULL, filename, MAX_PATH))
        return {};
    return std::filesystem::path(filename);
#elif defined(linux)
    return std::filesystem::canonical("/proc/self/exe");
#else
# error "operating system not supported"
#endif
}