#include QMK_KEYBOARD_H



// Used for SHIFT_ESC
#define MODS_CTRL_MASK  (MOD_BIT(KC_LSHIFT)|MOD_BIT(KC_RSHIFT))

// Each layer gets a name for readability, which is then used in the keymap matrix below.
// The underscores don't mean anything - you can have a layer called STUFF or any other name.
// Layer names don't all need to be of the same length, obviously, and you can also skip them
// entirely and just use numbers.
#define _BL 0
#define _FL 1

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  /* Keymap _BL: (Base Layer) Default Layer
   * ,-----------------------------------------------------------.
   * |Esc~| 1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|Backsp |
   * |-----------------------------------------------------------|
   * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \  |
   * |-----------------------------------------------------------|
   * |CAPS   |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|Return |
   * |-----------------------------------------------------------|
   * |Shift   |  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|  Up  |FN |
   * |-----------------------------------------------------------|
   * |Ctrl|Gui |Alt |      Space           |Alt |Left |Down|Right|
   * `-----------------------------------------------------------'
   */
[_BL] = LAYOUT_all(
    F(0)        ,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_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_CAPS     ,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_LSHIFT   ,_______,KC_Z   ,KC_X   ,KC_C   ,KC_V   ,KC_B   ,KC_N   ,KC_M   ,KC_COMM,KC_DOT ,KC_SLSH,KC_UP  ,MO(_FL)    ,           \
    KC_LCTL     ,KC_LGUI,KC_LALT,                        KC_SPC                 ,KC_RALT,KC_LEFT,KC_DOWN,KC_RIGHT),
  /* Keymap _FL: Function Layer
   * ,-----------------------------------------------------------.
   * |GRV|F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10|F11|F12|   DEL |
   * |-----------------------------------------------------------|
   * |  MB3|MB2|MUP|MB1|MWU|   |   |   |INS|   |RST|   |   |Print|
   * |-----------------------------------------------------------|
   * |      | ML|MDN|MR |MWD|   |   |       |   |   |   |        |
   * |-----------------------------------------------------------|
   * |        |   |   |   |   |   |   |   |   |   |   |PGUP|     |
   * |-----------------------------------------------------------|
   * |    |    |    |                        |Ctrl|HOME|PGD |END |
   * `-----------------------------------------------------------'
   */
[_FL] = LAYOUT_all(
    KC_GRV      , KC_F1     ,KC_F2      ,KC_F3      ,KC_F4        ,KC_F5  ,KC_F6  ,KC_F7  ,KC_F8  ,KC_F9  ,KC_F10 ,KC_F11 ,KC_F12     ,KC_DEL     ,_______,  \
    KC_MS_BTN3  ,KC_MS_BTN2 ,KC_MS_UP   ,KC_MS_BTN1 ,KC_MS_WH_UP  ,_______,_______,_______,KC_INS ,_______,RESET  ,_______,_______    ,KC_PSCREEN ,          \
    _______     ,KC_MS_LEFT ,KC_MS_DOWN ,KC_MS_RIGHT,KC_MS_WH_DOWN,_______,_______,_______,_______,_______,_______,_______,_______    ,_______    ,          \
    _______     ,_______    ,_______    ,_______    ,_______      ,_______,_______,_______,_______,_______,_______,_______,KC_PGUP    ,_______    ,          \
    KC_LCTL     ,_______    ,KC_LALT    ,                                  _______,                        KC_RCTL,KC_HOME,KC_PGDOWN  ,KC_END ),
};

enum function_id {
    SHIFT_ESC,
};

const uint16_t PROGMEM fn_actions[] = {
  [0]  = ACTION_FUNCTION(SHIFT_ESC),
};

void action_function(keyrecord_t *record, uint8_t id, uint8_t opt) {
  static uint8_t shift_esc_shift_mask;
  switch (id) {
    case SHIFT_ESC:
      shift_esc_shift_mask = get_mods()&MODS_CTRL_MASK;
      if (record->event.pressed) {
        if (shift_esc_shift_mask) {
          add_key(KC_GRV);
          send_keyboard_report();
        } else {
          add_key(KC_ESC);
          send_keyboard_report();
        }
      } else {
        if (shift_esc_shift_mask) {
          del_key(KC_GRV);
          send_keyboard_report();
        } else {
          del_key(KC_ESC);
          send_keyboard_report();
        }
      }
      break;
  }
}