/* Copyright 2020 Kyle McCreery
 *
 * 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


#define FN1_SPC     LT(1, KC_SPC)
#define FN2_BSPC    LT(2, KC_BSPC)
#define FN3_B       LT(3, KC_B)
#define CTL_Z       CTL_T(KC_Z)
#define ALT_X       ALT_T(KC_X)
#define ALT_N       ALGR_T(KC_N)
#define CTL_M       RCTL_T(KC_M)
#define SFT_ENT     RSFT_T(KC_ENT)
#define WIN_C       LGUI_T(KC_C)

typedef struct {
    bool is_press_action;
    uint8_t state;
} tap;

enum {
    SINGLE_TAP = 1,
    SINGLE_HOLD,
    DOUBLE_TAP
};

// Tap dance enums
enum {
    left_enter,
};

uint8_t cur_dance(tap_dance_state_t *state);
void left_enter_finished(tap_dance_state_t *state, void *user_data);
void left_enter_reset(tap_dance_state_t *state, void *user_data);



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

  [0] = LAYOUT(
    KC_7,    KC_8,    KC_9,    KC_0,           KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,     KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,
    KC_4,    KC_5,    KC_6,    TD(left_enter), KC_A,    KC_S,    KC_D,    KC_F,    KC_G,     KC_H,    KC_J,    KC_K,    KC_L,    KC_ESC,
    KC_1,    KC_2,    KC_3,                    CTL_Z,   ALT_X,   WIN_C,   KC_V,    FN2_BSPC, FN1_SPC, FN3_B,   ALT_N,   CTL_M,   SFT_ENT
  ),

  [1] = LAYOUT(
    KC_F7,   KC_F8,   KC_F9,   KC_F10,  _______, _______, _______, QK_BOOT, _______,  KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
    KC_F4,   KC_F5,   KC_F6,   KC_TAB,  _______, _______, _______, _______, _______,  KC_COMM, KC_DOT,  KC_SLSH, KC_SCLN, KC_QUOT,
    KC_F1,   KC_F2,   KC_F3,            _______, _______, KC_LGUI, _______, KC_DEL,   _______, KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
  ),

  [2] = LAYOUT(
    _______, _______, _______, _______, _______, _______, _______, _______, _______,  KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE,
    _______, _______, _______, _______, _______, _______, _______, _______, _______,  KC_LABK, KC_RABK, KC_QUES, KC_COLN, KC_DQUO,
    KC_F11,  KC_F12,  _______,          _______, _______, _______, _______, _______,  KC_PSCR, KC_HOME, KC_PGDN, KC_PGUP, KC_END
  ),

[3] = LAYOUT(
    RGB_M_G,  RGB_M_T, _______,  RGB_M_P, RGB_HUI, RGB_SAI, RGB_VAI, RGB_MOD,  _______,  _______, _______, _______, _______, _______,
    RGB_M_SN, RGB_M_K, RGB_M_X,  RGB_TOG, RGB_HUD, RGB_SAD, RGB_VAD, RGB_RMOD, _______,  _______, _______, _______, _______, _______,
    RGB_M_B,  RGB_M_R, RGB_M_SW,          _______, _______, _______, _______,  _______,  _______, _______, _______, _______, _______
  )

};


uint8_t cur_dance(tap_dance_state_t *state) {
    if (state->count == 1) {
        if (state->interrupted || !state->pressed) return SINGLE_TAP;
        // Key has not been interrupted, but the key is still held. Means you want to send a 'HOLD'.
        else return SINGLE_HOLD;
    } else return DOUBLE_TAP;
    //} else if (state->count >= 2) {
    //    return DOUBLE_TAP;
    //}else return 8; // Magic number. At some point this method will expand to work for more presses
}

static tap left_enter_tap_state = {
    .is_press_action = true,
    .state = 0
};

void left_enter_finished(tap_dance_state_t *state, void *user_data) {
    left_enter_tap_state.state = cur_dance(state);
    switch (left_enter_tap_state.state) {
        //case SINGLE_TAP: register_code(KC_ENT); break;
        case SINGLE_HOLD: register_code(KC_LSFT); break;
        case DOUBLE_TAP: register_code(KC_ENT); break;
    }
}

void left_enter_reset(tap_dance_state_t *state, void *user_data) {
    switch (left_enter_tap_state.state) {
        //case SINGLE_TAP: unregister_code(KC_ENT); break;
        case SINGLE_HOLD: unregister_code(KC_LSFT); break;
        case DOUBLE_TAP: unregister_code(KC_ENT); break;
    }
    left_enter_tap_state.state = 0;
}

tap_dance_action_t tap_dance_actions[] = {
    [left_enter] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, left_enter_finished, left_enter_reset)
};