/*
 * keylang.c
 *
 *  Created on: 17 февр. 2023 г.
 *      Author: alexander
 */

#include "keylang.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <X11/XKBlib.h>
#include <X11/extensions/XKBrules.h>

/*
 * 0 - unknown
 * 1 - us
 * 2 - ru
 */

int getKeyboardLanguage()
{
    Display *dpy = XOpenDisplay(NULL);

    XkbStateRec state;
    XkbGetState(dpy, XkbUseCoreKbd, &state);

    XkbRF_VarDefsRec vd;
    XkbRF_GetNamesProp(dpy, NULL, &vd);

    int length = strlen(vd.layout) + 1;
    char *current = (char *)malloc(sizeof(char) * length);
    strncpy(current, vd.layout, length);
    current[length] = '\0';

    XCloseDisplay(dpy);

    char *lang = strtok(current, ",");

    for (int i = 0; i < state.group; i++)
        lang = strtok(NULL, ",");

    int langcode = 0;

    if (!strcmp(lang, "us")) langcode = 1;
    if (!strcmp(lang, "ru")) langcode = 2;

    free(current);

    return langcode;
}