/* Copyright 2017 Mathias Andersson <wraul@dbox.se>
 *
 * 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 QMK_KEYBOARD_H

#define MODS_SHIFT_GUI_MASK (MOD_BIT(KC_LSFT)|MOD_BIT(KC_RSFT)|MOD_BIT(KC_LGUI)|MOD_BIT(KC_RGUI))
#define MODS_GUI_MASK   (MOD_BIT(KC_LGUI)|MOD_BIT(KC_RGUI))

enum custom_keycodes {
  SFT_ESC = SAFE_RANGE
};

#define _DEFAULT 0
#define _FN 1

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  [_DEFAULT] = LAYOUT_all(
    KC_F1,   KC_F2,   SFT_ESC, KC_1,    KC_2,     KC_3,   KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,  KC_BSPC,
    KC_F3,   KC_F4,   KC_TAB,  KC_Q,    KC_W,     KC_E,   KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSLS,
    KC_F5,   KC_F6,   MO(_FN), KC_A,    KC_S,     KC_D,   KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT, KC_ENT,
    KC_F7,   KC_F8,   KC_LSFT, _______, KC_Z,     KC_X,   KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_UP,   MO(_FN),
    KC_F9,   KC_F10,  KC_LCTL, KC_LGUI, KC_LALT,                   KC_SPC,  KC_RALT, KC_ENT,           KC_RGUI, MO(_FN), KC_LEFT, KC_DOWN, KC_RGHT
  ),
  [_FN] = LAYOUT_all(
    UG_TOGG, UG_NEXT, KC_GRV,  _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, QK_BOOT,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    UG_HUEU, UG_HUED, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    UG_SATU, UG_SATD, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    UG_VALU, UG_VALD, _______, _______, _______,                   _______, _______, _______,          _______, _______, _______, _______, _______
  )
};

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  switch (keycode) {
    case SFT_ESC:
      if (record->event.pressed) {
        if (get_mods() & MODS_SHIFT_GUI_MASK) {
          add_key(KC_GRV);
          send_keyboard_report();
        } else {
          add_key(KC_ESC);
          send_keyboard_report();
        }
      } else {
        if (get_mods() & MODS_SHIFT_GUI_MASK) {
          del_key(KC_GRV);
          send_keyboard_report();
        } else {
          del_key(KC_ESC);
          send_keyboard_report();
        }
      }

      return false;

    default:
      return true;
  }
}