#include QMK_KEYBOARD_H

enum layers {
  _QWERTY,
  _LOWER,
  _RAISE,
  _ADJUST
};

enum keycodes {
  LOWER,
  RAISE
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

  /* Qwerty
   * ,-----------------------------------------------------------------------------------.
   * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * | Ctrl |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |  ;:  |  '"  |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |  ,<  |  .>  |  /?  |Enter |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * | Caps | Esc  | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
   * `-----------------------------------------------------------------------------------'
   */
  [_QWERTY] = LAYOUT_planck_mit(
    KC_TAB,  KC_Q,   KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
    KC_LCTL,  KC_A,  KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
    KC_LSFT, KC_Z,   KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
    KC_CAPS, KC_ESC, KC_LALT, KC_LGUI, LOWER,       KC_SPC,       RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
  ),

  /* Lower
   * ,-----------------------------------------------------------------------------------.
   * |      |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  |      |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |      |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |  ~   |  |   |      |      |      |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
   * `-----------------------------------------------------------------------------------'
   */
  [_LOWER] = LAYOUT_planck_mit(
    _______, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR,   KC_ASTR,    KC_LPRN, KC_RPRN, _______,
    _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,   KC_PLUS,    KC_LCBR, KC_RCBR, _______,
    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_GRV), S(KC_BSLS), _______, _______, _______,
    _______, _______, _______, _______, _______,     _______,      _______,   KC_MNXT,    KC_VOLD, KC_VOLU, KC_MPLY
  ),

  /* Raise
   * ,-----------------------------------------------------------------------------------.
   * |      |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  |      |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      | Ins  | Home | PgUp | Pscr | Slck | Paus |   -  |   =  |   [  |   ]  |      |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * |      | Del  | End  | PgDn | Nlck |      |      |   `  |   \  |      |      |      |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
   * `-----------------------------------------------------------------------------------'
   */
  [_RAISE] = LAYOUT_planck_mit(
    _______, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    _______,
    _______, KC_INS,  KC_HOME, KC_PGUP, KC_PSCR, KC_SLCK, KC_PAUS, KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, _______,
    _______, KC_DEL,  KC_END,  KC_PGDN, KC_NLCK, _______, _______, KC_GRV,  KC_BSLS, _______, _______, _______,
    _______, _______, _______, _______, _______,     _______,      _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
  ),

  /* Adjust (Lower + Raise)
   * ,-----------------------------------------------------------------------------------.
   * |      | Reset|      |      |      |      |      |      |      |      |      |      |
   * |------+------+------+------+------+-------------+------+------+------+------+------|
   * |      |BLtogg|BLstep|      |      |      |      |      |      |      |      |      |
   * |------+------+------+------+------+------|------+------+------+------+------+------|
   * |      |RGBtog|RGBhui|RGBhud|RGBmod|RGBsai|RGBsad|      |      |      |      |      |
   * |------+------+------+------+------+------+------+------+------+------+------+------|
   * |      |      |      |      |      |             |      |      |      |      |      |
   * `-----------------------------------------------------------------------------------'
   */
  [_ADJUST] = LAYOUT_planck_mit(
    _______, RESET,   DEBUG,   _______, _______, _______, _______, _______, _______, _______, _______, KC_POWER,
    _______, BL_TOGG, BL_STEP, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    _______, RGB_TOG, RGB_HUI, RGB_HUD, RGB_MOD, RGB_SAI, RGB_SAD, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______,     _______,      _______, _______, _______, _______, _______
  )
};

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
  switch (keycode) {
    case LOWER:
      if (record->event.pressed) {
        layer_on(_LOWER);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      } else {
        layer_off(_LOWER);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      }
      return false;
      break;
    case RAISE:
      if (record->event.pressed) {
        layer_on(_RAISE);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      } else {
        layer_off(_RAISE);
        update_tri_layer(_LOWER, _RAISE, _ADJUST);
      }
      return false;
      break;
  }
  return true;
}