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/* Copyright 2022 @ Keychron (https://www.keychron.com)
 *
 * 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,
    FN,
    COLEMAK,
    NAVIGATION
};

enum tap_dance_keys {
    TD_CAPS_NAV = 0
};

enum tap_dance_state {
    TD_NONE,
    TD_UNKNOWN,
    TD_SINGLE_TAP,
    TD_SINGLE_HOLD,
    TD_DOUBLE_TAP,
    TD_TAP_HOLD
};

typedef struct {
    bool is_press_action;
    enum tap_dance_state state;
} td_tap_t;

enum tap_dance_state cur_dance(tap_dance_state_t *state) {
    if (state->count == 1) {
        if (state->interrupted || !state->pressed) return TD_SINGLE_TAP;
        else return TD_SINGLE_HOLD;
    } else if (state->count == 2) {
        if (state->interrupted) return TD_DOUBLE_TAP;
        else if (state->pressed) return TD_TAP_HOLD;
        else return TD_DOUBLE_TAP;
    }
    return TD_UNKNOWN;
}

static td_tap_t caps_tap_state = {.is_press_action = true, .state = TD_NONE};

void caps_finished(tap_dance_state_t *state, void *user_data) {
    caps_tap_state.state = cur_dance(state);
    switch (caps_tap_state.state) {
        case TD_SINGLE_TAP:
        case TD_SINGLE_HOLD:
            register_code(KC_LCTL);
            break;
        case TD_TAP_HOLD:
            layer_on(NAVIGATION);
            break;
        default:
            break;
    }
}

void caps_reset(tap_dance_state_t *state, void *user_data) {
    switch (caps_tap_state.state) {
        case TD_SINGLE_TAP:
        case TD_SINGLE_HOLD:
            unregister_code(KC_LCTL);
            break;
        case TD_TAP_HOLD:
            layer_off(NAVIGATION);
            break;
        default:
            break;
    }
    caps_tap_state.state = TD_NONE;
}

tap_dance_action_t tap_dance_actions[] = {
    [TD_CAPS_NAV] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, caps_finished, caps_reset)
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [BASE] = LAYOUT_tkl_f13_ansi(
        KC_ESC,   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_MUTE,  KC_F13,   KC_F14,    RM_NEXT,
        KC_GRV,   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_INS,   KC_HOME,  KC_PGUP,
        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_DEL,   KC_END,   KC_PGDN,
        TD(TD_CAPS_NAV),  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_LSFT,            KC_Z,     KC_X,     KC_C,     KC_V,     KC_B,     KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,              KC_RSFT,            KC_UP,
        KC_LCTL,  KC_LOPT,  KC_LCMD,                                KC_SPC,                                 KC_RCMD,  KC_ROPT,  MO(FN),     KC_RCTL,  KC_LEFT,  KC_DOWN,  KC_RGHT),

    [FN] = LAYOUT_tkl_f13_ansi(
        _______,  KC_BRID,  KC_BRIU,  KC_MISSION_CONTROL, KC_LAUNCHPAD, RM_VALD,  RM_VALU,  KC_MPRV,  KC_MPLY,  KC_MNXT,  KC_MUTE,  KC_VOLD,  KC_VOLU,    RM_TOGG,  _______,  _______,  _______,
        _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,    _______,  _______,  _______,  _______,
        RM_TOGG,  RM_NEXT,  RM_VALU,  RM_HUEU,  RM_SATU,  RM_SPDU,  _______,  _______,  _______,  _______,  _______,  _______,  _______,    _______,  _______,  _______,  _______,
        _______,  RM_PREV,  RM_VALD,  RM_HUED,  RM_SATD,  RM_SPDD,  _______,  _______,  _______,  _______,  _______,  _______,              _______,
        _______,            _______,  _______,  _______,  _______,  _______,  NK_TOGG,  _______,  _______,  _______,  _______,              _______,            _______,
        _______,  _______,  _______,                                _______,                                _______,  _______,  _______,    _______,  _______,  _______,  _______),

    [COLEMAK] = LAYOUT_tkl_f13_ansi(
        KC_ESC,             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_MUTE,  KC_F13,   KC_F14,    RM_NEXT,
        KC_GRV,             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_INS,   KC_HOME,  KC_PGUP,
        KC_TAB,             KC_Q,     KC_W,     KC_F,     KC_P,     KC_B,     KC_J,     KC_L,     KC_U,     KC_Y,     KC_SCLN,  KC_LBRC,  KC_RBRC,    KC_BSLS,  KC_DEL,   KC_END,   KC_PGDN,
        TD(TD_CAPS_NAV),    KC_A,     KC_R,     KC_S,     KC_T,     KC_G,     KC_M,     KC_N,     KC_E,     KC_I,     KC_O,     KC_QUOT,              KC_ENT,
        MT(MOD_LSFT, KC_Z),           KC_X,     KC_C,     KC_D,     KC_V,     KC_NUHS,     KC_K,     KC_H,     KC_COMM,  KC_DOT,   KC_SLSH,              KC_RSFT,            KC_UP,
        KC_LCTL,            KC_LOPT,  KC_LCMD,                                KC_SPC,                                 KC_RCMD,  KC_ROPT,  MO(FN),     KC_RCTL,  KC_LEFT,  KC_DOWN,  KC_RGHT),

    [NAVIGATION] = LAYOUT_tkl_f13_ansi(
        _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,    _______,  _______,  _______,  _______,
        _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,    _______,  _______,  _______,  _______,
        _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,    _______,  _______,  _______,  _______,
        _______,  _______,  _______,  _______,  _______,  _______,  KC_LEFT,  KC_DOWN,  KC_UP,    KC_RGHT,  _______,  _______,              _______,
        _______,            _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,  _______,              _______,            _______,
        _______,  _______,  _______,                                _______,                                _______,  _______,  _______,    _______,  _______,  _______,  _______),
};

#if defined(ENCODER_MAP_ENABLE)
const uint16_t PROGMEM encoder_map[][NUM_ENCODERS][NUM_DIRECTIONS] = {
    [BASE]       = {ENCODER_CCW_CW(KC_VOLD, KC_VOLU) },
    [FN]         = {ENCODER_CCW_CW(RM_VALD, RM_VALU) },
    [COLEMAK]    = {ENCODER_CCW_CW(KC_VOLD, KC_VOLU) },
    [NAVIGATION] = {ENCODER_CCW_CW(KC_VOLD, KC_VOLU) }
};
#endif // ENCODER_MAP_ENABLE

#ifdef RGB_MATRIX_ENABLE
bool rgb_matrix_indicators_advanced_user(uint8_t led_min, uint8_t led_max) {
    // Check if COLEMAK is the default layer (set by DIP switch)
    // The DIP switch uses default_layer_set(), not layer_on()
    if (get_highest_layer(default_layer_state) == COLEMAK) {
        // Create a breathing effect for the pause key
        uint16_t time = timer_read();
        uint8_t val = ((time >> 3) & 0xFF);

        // Convert to triangle wave for breathing
        if (val > 127) {
            val = 255 - val;
        }
        val = val << 1;  // Double brightness

        // Set pause key to pulse red
        RGB_MATRIX_INDICATOR_SET_COLOR(15, val, 0, 0);
    }

    // Check if NAVIGATION layer is active
    if (IS_LAYER_ON(NAVIGATION)) {
        // Light up the HJKL keys (navigation arrow positions) in solid green
        // H = LED 56, J = LED 57, K = LED 58, L = LED 59
        RGB_MATRIX_INDICATOR_SET_COLOR(56, 0, 255, 0);  // H (Left)
        RGB_MATRIX_INDICATOR_SET_COLOR(57, 0, 255, 0);  // J (Down)
        RGB_MATRIX_INDICATOR_SET_COLOR(58, 0, 255, 0);  // K (Up)
        RGB_MATRIX_INDICATOR_SET_COLOR(59, 0, 255, 0);  // L (Right)
    }

    return true;
}
#endif