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/*
Copyright 2012,2013 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 "keymap.h"
#include "report.h"
#include "keycode.h"
#include "action_layer.h"
#if defined(__AVR__)
#include <util/delay.h>
#include <stdio.h>
#endif
#include "action.h"
#include "action_macro.h"
#include "debug.h"
#include "backlight.h"
#include "quantum.h"

#ifdef MIDI_ENABLE
	#include "process_midi.h"
#endif

extern keymap_config_t keymap_config;

#include <inttypes.h>

/* converts key to action */
action_t action_for_key(uint8_t layer, keypos_t key)
{
    // 16bit keycodes - important
    uint16_t keycode = keymap_key_to_keycode(layer, key);

    // keycode remapping
    keycode = keycode_config(keycode);

    action_t action;
    uint8_t action_layer, when, mod;
    // The arm-none-eabi compiler generates out of bounds warnings when using the fn_actions directly for some reason
    const uint16_t* actions = fn_actions;

    switch (keycode) {
        case KC_FN0 ... KC_FN31:
            action.code = pgm_read_word(&actions[FN_INDEX(keycode)]);
            break;
        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_MEDIA_REWIND:
            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;
        case QK_MODS ... QK_MODS_MAX: ;
            // Has a modifier
            // Split it up
            action.code = ACTION_MODS_KEY(keycode >> 8, keycode & 0xFF); // adds modifier to key
            break;
        case QK_FUNCTION ... QK_FUNCTION_MAX: ;
            // Is a shortcut for function action_layer, pull last 12bits
            // This means we have 4,096 FN macros at our disposal
            action.code = pgm_read_word(&actions[(int)keycode & 0xFFF]);
            break;
        case QK_MACRO ... QK_MACRO_MAX:
            action.code = ACTION_MACRO(keycode & 0xFF);
            break;
        case QK_LAYER_TAP ... QK_LAYER_TAP_MAX:
            action.code = ACTION_LAYER_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
            break;
        case QK_TO ... QK_TO_MAX: ;
            // Layer set "GOTO"
            when = (keycode >> 0x4) & 0x3;
            action_layer = keycode & 0xF;
            action.code = ACTION_LAYER_SET(action_layer, when);
            break;
        case QK_MOMENTARY ... QK_MOMENTARY_MAX: ;
            // Momentary action_layer
            action_layer = keycode & 0xFF;
            action.code = ACTION_LAYER_MOMENTARY(action_layer);
            break;
        case QK_DEF_LAYER ... QK_DEF_LAYER_MAX: ;
            // Set default action_layer
            action_layer = keycode & 0xFF;
            action.code = ACTION_DEFAULT_LAYER_SET(action_layer);
            break;
        case QK_TOGGLE_LAYER ... QK_TOGGLE_LAYER_MAX: ;
            // Set toggle
            action_layer = keycode & 0xFF;
            action.code = ACTION_LAYER_TOGGLE(action_layer);
            break;
        case QK_ONE_SHOT_LAYER ... QK_ONE_SHOT_LAYER_MAX: ;
            // OSL(action_layer) - One-shot action_layer
            action_layer = keycode & 0xFF;
            action.code = ACTION_LAYER_ONESHOT(action_layer);
            break;
        case QK_ONE_SHOT_MOD ... QK_ONE_SHOT_MOD_MAX: ;
            // OSM(mod) - One-shot mod
            mod = keycode & 0xFF;
            action.code = ACTION_MODS_ONESHOT(mod);
            break;
        case QK_MOD_TAP ... QK_MOD_TAP_MAX:
            action.code = ACTION_MODS_TAP_KEY((keycode >> 0x8) & 0xF, keycode & 0xFF);
            break;
    #ifdef BACKLIGHT_ENABLE
        case BL_0 ... BL_15:
            action.code = ACTION_BACKLIGHT_LEVEL(keycode - BL_0);
            break;
        case BL_DEC:
            action.code = ACTION_BACKLIGHT_DECREASE();
            break;
        case BL_INC:
            action.code = ACTION_BACKLIGHT_INCREASE();
            break;
        case BL_TOGG:
            action.code = ACTION_BACKLIGHT_TOGGLE();
            break;
        case BL_STEP:
            action.code = ACTION_BACKLIGHT_STEP();
            break;
    #endif
        default:
            action.code = ACTION_NO;
            break;
    }
    return action;
}

__attribute__ ((weak))
const uint16_t PROGMEM fn_actions[] = {

};

/* 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 key to keycode */
uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key)
{
    // Read entire word (16bits)
    return pgm_read_word(&keymaps[(layer)][(key.row)][(key.col)]);
}


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