/* Copyright 2021 rjboone
 *
 * 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

enum layers{
  _BASE,
  _NUM_SYM,
  _NAV,
  _GAME
};

enum combo_events {
  COMBO_BSPC,
  COMBO_NUMBAK,
  COMBO_TAB,
  COMBO_ESC,
  COMBO_DEL,
};

#define KC_SF LSFT_T(KC_F)
#define KC_SJ RSFT_T(KC_J)

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  [_BASE] = LAYOUT(
   KC_1, KC_2, KC_3, KC_4, KC_5,
   KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P,
   KC_A, KC_S, KC_D, KC_SF, KC_G, KC_H, KC_SJ, KC_K, KC_L, KC_SCLN,
   KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT,
   KC_LCTL, KC_LALT, KC_LGUI, LT(_NUM_SYM, KC_ENT), KC_SPC, MO(_NAV), TG(_GAME), KC_SLSH
  ),

  [_NUM_SYM] = LAYOUT(
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0,
    KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_EQUAL, KC_MINS,
    KC_LCBR, KC_LBRC, KC_LPRN, KC_UNDS, KC_RPRN, KC_RBRC, KC_RCBR, KC_SCLN, KC_QUOTE,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_RSFT, KC_TRNS, KC_TRNS, KC_BSLS
  ),

  [_NAV] = LAYOUT(
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    RESET, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_UP, KC_TRNS, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_LEFT, KC_DOWN, KC_RIGHT, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
  ),

  [_GAME] = LAYOUT(
    KC_1, KC_2, KC_3, KC_4, KC_5,
    KC_ESC, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_NO, KC_NO, KC_NO, KC_NO,
    KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_NO, KC_NO, KC_NO, KC_NO,
    KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_NO, KC_NO, KC_NO,
    KC_LCTL, KC_LGUI, KC_LALT, KC_SPC, KC_ENT, KC_NO, TG(_GAME), KC_NO
  ),
};

#ifdef COMBO_ENABLE
const uint16_t PROGMEM combo_bspc[] = {KC_O, KC_P, COMBO_END};
const uint16_t PROGMEM combo_numbak[] = {KC_0, KC_9, COMBO_END};
const uint16_t PROGMEM combo_tab[] = {KC_A, KC_S, COMBO_END};
const uint16_t PROGMEM combo_esc[] = {KC_Q, KC_W, COMBO_END};
const uint16_t PROGMEM combo_del[] = {KC_MINS, KC_EQL, COMBO_END};

combo_t key_combos[COMBO_COUNT] = {
  [COMBO_BSPC] = COMBO(combo_bspc,KC_BSPC),
  [COMBO_NUMBAK] = COMBO(combo_numbak,KC_BSPC),
  [COMBO_TAB] = COMBO(combo_tab,KC_TAB),
  [COMBO_ESC] = COMBO(combo_esc,KC_ESC),
  [COMBO_DEL] = COMBO(combo_del,KC_DEL),

};
#endif

layer_state_t layer_state_set_user(layer_state_t state) {

#ifdef COMBO_ENABLE
    switch(get_highest_layer(state)) {
    case _GAME:
      combo_disable();
      break;
    default:
      combo_enable();
      break;
    }
#endif // COMBO_ENABLE

    return state;
}