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/*
Copyright 2013 Jun Wako <wakojun@gmail.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/pgmspace.h>
#include "keymap.h"
#include "report.h"
#include "keycode.h"
#include "action_layer.h"
#include "action.h"
#include "action_macro.h"
#include "debug.h"


static action_t keycode_to_action(uint8_t keycode);


/* converts key to action */
action_t action_for_key(uint8_t layer, key_t key)
{
    uint8_t keycode = keymap_key_to_keycode(layer, key);
    switch (keycode) {
        case KC_FN0 ... KC_FN31:
            return keymap_fn_to_action(keycode);
#ifdef BOOTMAGIC_ENABLE
        case KC_CAPSLOCK:
        case KC_LOCKING_CAPS:
            if (keymap_config.swap_control_capslock || keymap_config.capslock_to_control) {
                return keycode_to_action(KC_LCTL);
            }
            return keycode_to_action(keycode);
        case KC_LCTL:
            if (keymap_config.swap_control_capslock) {
                return keycode_to_action(KC_CAPSLOCK);
            }
            return keycode_to_action(KC_LCTL);
        case KC_LALT:
            if (keymap_config.swap_lalt_lgui) {
                if (keymap_config.no_gui) {
                    return keycode_to_action(ACTION_NO);
                }
                return keycode_to_action(KC_LGUI);
            }
            return keycode_to_action(KC_LALT);
        case KC_LGUI:
            if (keymap_config.swap_lalt_lgui) {
                return keycode_to_action(KC_LALT);
            }
            if (keymap_config.no_gui) {
                return keycode_to_action(ACTION_NO);
            }
            return keycode_to_action(KC_LGUI);
        case KC_RALT:
            if (keymap_config.swap_ralt_rgui) {
                if (keymap_config.no_gui) {
                    return keycode_to_action(ACTION_NO);
                }
                return keycode_to_action(KC_RGUI);
            }
            return keycode_to_action(KC_RALT);
        case KC_RGUI:
            if (keymap_config.swap_ralt_rgui) {
                return keycode_to_action(KC_RALT);
            }
            if (keymap_config.no_gui) {
                return keycode_to_action(ACTION_NO);
            }
            return keycode_to_action(KC_RGUI);
        case KC_GRAVE:
            if (keymap_config.swap_grave_esc) {
                return keycode_to_action(KC_ESC);
            }
            return keycode_to_action(KC_GRAVE);
        case KC_ESC:
            if (keymap_config.swap_grave_esc) {
                return keycode_to_action(KC_GRAVE);
            }
            return keycode_to_action(KC_ESC);
        case KC_BSLASH:
            if (keymap_config.swap_backslash_backspace) {
                return keycode_to_action(KC_BSPACE);
            }
            return keycode_to_action(KC_BSLASH);
        case KC_BSPACE:
            if (keymap_config.swap_backslash_backspace) {
                return keycode_to_action(KC_BSLASH);
            }
            return keycode_to_action(KC_BSPACE);
#endif
        default:
            return keycode_to_action(keycode);
    }
}


/* Macro */
__attribute__ ((weak))
const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt)
{
    return MACRO_NONE;
}

/* Function */
__attribute__ ((weak))
void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
{
}



/* translates keycode to action */
static action_t keycode_to_action(uint8_t keycode)
{
    action_t action;
    switch (keycode) {
        case KC_A ... KC_EXSEL:
        case KC_LCTRL ... KC_RGUI:
            action.code = ACTION_KEY(keycode);
            break;
        case KC_SYSTEM_POWER ... KC_SYSTEM_WAKE:
            action.code = ACTION_USAGE_SYSTEM(KEYCODE2SYSTEM(keycode));
            break;
        case KC_AUDIO_MUTE ... KC_WWW_FAVORITES:
            action.code = ACTION_USAGE_CONSUMER(KEYCODE2CONSUMER(keycode));
            break;
        case KC_MS_UP ... KC_MS_ACCEL2:
            action.code = ACTION_MOUSEKEY(keycode);
            break;
        case KC_TRNS:
            action.code = ACTION_TRANSPARENT;
            break;
        default:
            action.code = ACTION_NO;
            break;
    }
    return action;
}



#ifdef USE_LEGACY_KEYMAP
/*
 * Legacy keymap support
 *      Consider using new keymap API instead.
 */
__attribute__ ((weak))
uint8_t keymap_key_to_keycode(uint8_t layer, key_t key)
{
    return keymap_get_keycode(layer, key.row, key.col);
}


/* Legacy keymap support */
__attribute__ ((weak))
action_t keymap_fn_to_action(uint8_t keycode)
{
    action_t action = { .code = ACTION_NO };
    switch (keycode) {
        case KC_FN0 ... KC_FN31:
            {
                uint8_t layer = keymap_fn_layer(FN_INDEX(keycode));
                uint8_t key = keymap_fn_keycode(FN_INDEX(keycode));
                if (key) {
                    action.code = ACTION_LAYER_TAP_KEY(layer, key);
                } else {
                    action.code = ACTION_LAYER_MOMENTARY(layer);
                }
            }
            return action;
        default:
            return action;
    }
}
#endif