#include <stdio.h>

#include <xcb/xcb_keysyms.h>
#include <X11/keysym.h>
#include <xkbcommon/xkbcommon.h>

#include "qdebug.h"

void key_code_for_symbol(xcb_keysym_t keysym, const xcb_setup_t *s)
{
    int num_syms;
    const xkb_keysym_t *syms;

    struct xkb_rule_names xkb_names;
    struct xkb_state *xkb_state;
    struct xkb_keymap *xkb_keymap;
    struct xkb_context *xkb_context;

    memset(&xkb_names, 0, sizeof(xkb_names));
    xkb_names.rules = "evdev";
    xkb_names.model = "pc105";
    xkb_names.layout = "us";
    xkb_names.variant = "";
    xkb_names.options = "";

    xkb_context = xkb_context_new((xkb_context_flags)0);

    xkb_keymap = xkb_keymap_new_from_names(xkb_context, &xkb_names, XKB_MAP_COMPILE_PLACEHOLDER);
    xkb_state = xkb_state_new(xkb_keymap);

    bool found = false;

    for(xcb_keycode_t i = s->min_keycode; i && i < s->max_keycode; i++)
    {
        num_syms = xkb_state_key_get_syms(xkb_state, i, &syms);

        if (num_syms == 0) continue;

        for (int j = 0; j <= num_syms; j++) {
            if(syms[j] == keysym) {
                found = true;
            }
        }
    }

    if (found)
        qDebug() << "yes";
    else
        qDebug() << "no";

}

int main() {

    xcb_connection_t *conn;
    int screen;

    conn = xcb_connect(NULL, &screen);
    const xcb_setup_t *m_setup = xcb_get_setup(conn);

    const xcb_keysym_t symbols[] = {
        XK_Alt_L, XK_Meta_L, XK_Super_L, XK_Super_R,
        XK_Hyper_L, XK_Hyper_R, XK_Num_Lock, XK_Mode_switch, XK_Caps_Lock,
    };

    const size_t numSymbols = sizeof symbols / sizeof *symbols;

    qDebug() << "### With xcb_key_symbols_t ###";
    xcb_key_symbols_t *m_key_symbols = xcb_key_symbols_alloc(conn);
    xcb_keycode_t* modKeyCodes[numSymbols];
    for (int i = 0; i < numSymbols; ++i) {
        modKeyCodes[i] = xcb_key_symbols_get_keycode(m_key_symbols, symbols[i]);
    }

    for (int z = 0; z < numSymbols; ++z) {
        qDebug() << "index : "<< z << " " << modKeyCodes[z];
    }

    qDebug() << "### With libxkbcommon ###";
    for (int i = 0; i < numSymbols; ++i) {
        key_code_for_symbol(symbols[i], m_setup);
    }


}