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#include "konstantin.h"

__attribute__((weak))
void keyboard_pre_init_keymap(void) {}

void keyboard_pre_init_user(void) {
    keyboard_pre_init_keymap();
}

__attribute__((weak))
void eeconfig_init_keymap(void) {}

void eeconfig_init_user(void) {
    eeconfig_init_keymap();
}

__attribute__((weak))
void keyboard_post_init_keymap(void) {}

void keyboard_post_init_user(void) {
    keyboard_post_init_keymap();
}

__attribute__((weak))
bool process_record_keymap(uint16_t keycode, keyrecord_t *record) {
    return true;
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    if (!process_record_keymap(keycode, record)) {
        return false;
    }

    switch (keycode) {
    case CLEAR:
        if (record->event.pressed) {
            SEND_STRING(SS_LCTRL("a") SS_TAP(X_DELETE));
        }
        return false;

    case DST_P_R:
        (record->event.pressed ? register_code16 : unregister_code16)(
            (get_mods() & DST_MOD_MASK) ? DST_REM : DST_PRV
        );
        return false;

    case DST_N_A:
        (record->event.pressed ? register_code16 : unregister_code16)(
            (get_mods() & DST_MOD_MASK) ? DST_ADD : DST_NXT
        );
        return false;

#ifdef LAYER_FN
        static bool fn_lock;

    case FN_FNLK:
        if (record->event.pressed && record->tap.count == TAPPING_TOGGLE) {
            fn_lock = !IS_LAYER_ON(L_FN);  // Fn layer will be toggled after this
        }
        return true;
#endif

    case KC_ESC:
        if (record->event.pressed) {
#ifdef LAYER_NUMPAD  // Disable Numpad layer before Fn layer
            if (IS_LAYER_ON(L_NUMPAD)) {
                layer_off(L_NUMPAD);
                return false;
            }
#endif
#ifdef LAYER_FN
            if (IS_LAYER_ON(L_FN) && fn_lock) {
                layer_off(L_FN);
                return fn_lock = false;
            }
#endif
        }
        return true;

    default:
        return true;
    }
}

__attribute__((weak))
uint32_t layer_state_set_keymap(uint32_t state) {
    return state;
}

uint32_t layer_state_set_user(uint32_t state) {
    state = layer_state_set_keymap(state);

#ifdef LAYER_NUMPAD
    bool numpad = state & 1UL<<L_NUMPAD;
    bool num_lock = IS_HOST_LED_ON(USB_LED_NUM_LOCK);
    if (numpad != num_lock) {
        tap_code(KC_NLCK);  // Toggle Num Lock to match Numpad layer state
    }
#endif

    return state;
}