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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/>.
 */

#pragma once

#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 interrupting_keycode;
    uint16_t timer;
    bool     interrupted;
    bool     pressed;
    bool     finished;
} qk_tap_dance_state_t;

#    define TD(n) (QK_TAP_DANCE | ((n)&0xFF))

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;
    void (*layer_function)(uint8_t);
} 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, layer_move }),  }

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

#    define ACTION_TAP_DANCE_LAYER_MOVE(kc, layer) ACTION_TAP_DANCE_DUAL_ROLE(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