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/* Copyright 2016 Jack Humbert
 *
 * 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/>.
 */
#ifndef PROCESS_TAP_DANCE_H
#define PROCESS_TAP_DANCE_H

#ifdef TAP_DANCE_ENABLE

#include <stdbool.h>
#include <inttypes.h>

typedef struct
{
  uint8_t count;
  uint8_t oneshot_mods;
  uint8_t weak_mods;
  uint16_t keycode;
  uint16_t timer;
  bool interrupted;
  bool pressed;
  bool finished;
} qk_tap_dance_state_t;

#define TD(n) (QK_TAP_DANCE + n)

typedef void (*qk_tap_dance_user_fn_t) (qk_tap_dance_state_t *state, void *user_data);

typedef struct
{
  struct {
    qk_tap_dance_user_fn_t on_each_tap;
    qk_tap_dance_user_fn_t on_dance_finished;
    qk_tap_dance_user_fn_t on_reset;
  } fn;
  qk_tap_dance_state_t state;
  uint16_t custom_tapping_term;
  void *user_data;
} qk_tap_dance_action_t;

typedef struct
{
  uint16_t kc1;
  uint16_t kc2;
} qk_tap_dance_pair_t;

typedef struct
{
  uint16_t kc;
  uint8_t layer;
} qk_tap_dance_dual_role_t;

#define ACTION_TAP_DANCE_DOUBLE(kc1, kc2) { \
    .fn = { qk_tap_dance_pair_on_each_tap, qk_tap_dance_pair_finished, qk_tap_dance_pair_reset }, \
    .user_data = (void *)&((qk_tap_dance_pair_t) { kc1, kc2 }),  \
  }

#define ACTION_TAP_DANCE_DUAL_ROLE(kc, layer) { \
    .fn = { qk_tap_dance_dual_role_on_each_tap, qk_tap_dance_dual_role_finished, qk_tap_dance_dual_role_reset }, \
    .user_data = (void *)&((qk_tap_dance_dual_role_t) { kc, layer }), \
  }

#define ACTION_TAP_DANCE_FN(user_fn) {  \
    .fn = { NULL, user_fn, NULL }, \
    .user_data = NULL, \
  }

#define ACTION_TAP_DANCE_FN_ADVANCED(user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_dance_reset) { \
    .fn = { user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_dance_reset }, \
    .user_data = NULL, \
  }

#define ACTION_TAP_DANCE_FN_ADVANCED_TIME(user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_dance_reset, tap_specific_tapping_term) { \
    .fn = { user_fn_on_each_tap, user_fn_on_dance_finished, user_fn_on_dance_reset }, \
    .user_data = NULL, \
    .custom_tapping_term = tap_specific_tapping_term, \
  }

extern qk_tap_dance_action_t tap_dance_actions[];

/* To be used internally */

void preprocess_tap_dance(uint16_t keycode, keyrecord_t *record);
bool process_tap_dance(uint16_t keycode, keyrecord_t *record);
void matrix_scan_tap_dance (void);
void reset_tap_dance (qk_tap_dance_state_t *state);

void qk_tap_dance_pair_on_each_tap (qk_tap_dance_state_t *state, void *user_data);
void qk_tap_dance_pair_finished (qk_tap_dance_state_t *state, void *user_data);
void qk_tap_dance_pair_reset (qk_tap_dance_state_t *state, void *user_data);

void qk_tap_dance_dual_role_on_each_tap (qk_tap_dance_state_t *state, void *user_data);
void qk_tap_dance_dual_role_finished (qk_tap_dance_state_t *state, void *user_data);
void qk_tap_dance_dual_role_reset (qk_tap_dance_state_t *state, void *user_data);

#else

#define TD(n) KC_NO

#endif

#endif