#include "system_lib.h"

#include "log_helper.h"

namespace am {
static char system_path[260] = {0};

static bool get_system_path()
{
    if (strlen(system_path) == 0) {
        UINT ret = GetSystemDirectoryA(system_path, MAX_PATH);
        if (!ret) {
            al_fatal("failed to get system directory :%lu", GetLastError());
            return false;
        }
    }

    return true;
}

HMODULE load_system_library(const char *name)
{
    if (get_system_path() == false)
        return NULL;

    char base_path[MAX_PATH] = {0};
    strcpy(base_path, system_path);
    strcat(base_path, "\\");
    strcat(base_path, name);

    HMODULE module = GetModuleHandleA(base_path);
    if (module)
        return module;

    module = LoadLibraryA(base_path);
    if (!module) {
        al_error("failed load system library :%lu", GetLastError());
    }

    return module;
}

void free_system_library(HMODULE handle)
{
    FreeModule(handle);
}
} // namespace am