/* Copyright 2020 Worldspawn <mcmancuso@gmail.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 g4m3ralpha_layers {
    _HOME,
    _FN,
    _FNCHAR,
    _FKEYS,
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [_HOME] = LAYOUT(
        KC_1,    KC_2,    KC_3,    KC_4,    KC_5,
        KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,
        KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_ENT,
        LCTL_T(KC_Z), LALT_T(KC_X), LT(_FN, KC_C), LT(_FNCHAR, KC_V), LSFT_T(KC_SPC), RGUI_T(KC_B), RALT_T(KC_N), RCTL_T(KC_M)
    ),

    [_FN] = LAYOUT(
        KC_6,    KC_7,    KC_8,    KC_9,    KC_0,
        KC_ESC,  KC_MUTE, KC_VOLD, KC_VOLU, KC_MPLY, KC_HOME, KC_PGDN, KC_PGUP, KC_END,  KC_NO,
        KC_TAB,  KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT, KC_BSPC,
        KC_LCTL, KC_LALT, KC_TRNS, MO(_FKEYS),       LSFT_T(KC_SPC),   KC_RGUI, KC_RALT, KC_RCTL
    ),

    [_FNCHAR] = LAYOUT(
        RGB_TOG, RGB_VAD, RGB_VAI, RGB_MOD, RGB_SPD,
        KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,
        KC_GRV,  KC_NO,   KC_MINS, KC_EQL,  KC_BSLS, KC_LBRC, KC_RBRC, KC_SCLN, KC_QUOT, KC_BSPC,
        KC_LCTL, KC_LALT, MO(_FKEYS), KC_TRNS,       LSFT_T(KC_SPC),   KC_COMM, KC_DOT,  KC_SLSH
    ),

    [_FKEYS] = LAYOUT(
        RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD, RGB_SPI,
        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_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_NO,   KC_DEL,
        KC_LCTL, KC_LALT, KC_TRNS, KC_TRNS,          LSFT_T(KC_SPC),   KC_RGUI, KC_RALT, KC_RCTL
    ),
};

layer_state_t layer_state_set_user(layer_state_t state) {
    switch (get_highest_layer(state)) {
    case _FN:
        gpio_write_pin_high(D3);
        gpio_write_pin_low(D2);
        break;
    case _FNCHAR:
        gpio_write_pin_low(D3);
        gpio_write_pin_high(D2);
        break;
    case _FKEYS:
        gpio_write_pin_high(D3);
        gpio_write_pin_high(D2);
        break;
    default: //  for any other layers, or the default layer
        gpio_write_pin_low(D3);
        gpio_write_pin_low(D2);
        break;
    }
  return state;
}

bool led_update_user(led_t led_state) {
    gpio_write_pin(D0, led_state.caps_lock);
    return false;
}