/* Copyright 2020 Andrew Kannan
 *
 * 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


// Each layer gets a name for readability, which is then used in the keymap matrix below.
// The underscores don't mean anything - you can have a layer called STUFF or any other name.
// Layer names don't all need to be of the same length, obviously, and you can also skip them
// entirely and just use numbers.
enum layer_names {
    _BASE,
    _FN1,
    _FN2,
    _FN3
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  [_BASE] = LAYOUT_all(
    KC_GESC,  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_BSPC, KC_VOLU,
    KC_TAB,   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_VOLD,
    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,   TG(_FN3),
    KC_LCTL,  KC_LGUI, KC_LALT, KC_SPC, MO(_FN1), KC_RALT, KC_RGUI, MO(_FN2), KC_LEFT, KC_DOWN, KC_RIGHT
  ),

  [_FN1] = LAYOUT_all(
    KC_GRV, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_TRNS, KC_TRNS, KC_LPRN, KC_RPRN, KC_TRNS, KC_HOME,
    RGB_TOG, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_BSLS, KC_TRNS, KC_END,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_DOT, KC_TRNS, KC_TRNS, KC_MINS, KC_PLUS, KC_ASTR, KC_TRNS, KC_EQL, KC_INS, KC_PSCR,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
  ),

  [_FN2] = LAYOUT_all(
    KC_POWER, KC_F1, KC_F2, KC_F3, KC_F4, KC_F5, KC_F6, KC_TRNS, KC_TRNS, KC_TRNS, KC_MPLY, KC_MPRV, KC_MNXT, KC_DEL, KC_VOLU,
    KC_SLEP, KC_F7, KC_F8, KC_F9, KC_F10, KC_F11, KC_F12, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_VOLD,
    KC_WAKE, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_PSCR, KC_MUTE,
    RESET, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
  ),

  [_FN3] = LAYOUT_all(
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
    KC_TRNS, KC_TRNS, KC_TRNS, KC_SPC, KC_TRNS, KC_TRNS, KC_TRNS, MO(_FN1), KC_TRNS, KC_TRNS, KC_TRNS
  )
};

const rgblight_segment_t PROGMEM my_layer0_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_RED}
);
const rgblight_segment_t PROGMEM my_layer1_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_CYAN}
);
const rgblight_segment_t PROGMEM my_layer2_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_PURPLE}
);
const rgblight_segment_t PROGMEM my_layer3_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_GREEN}
);

const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
    my_layer0_layer,
    my_layer1_layer,
    my_layer2_layer,
    my_layer3_layer
);

void keyboard_post_init_user(void) {
    // Enable the LED layers
    rgblight_layers = my_rgb_layers;
}

layer_state_t default_layer_state_set_user(layer_state_t state) {
    rgblight_set_layer_state(0, layer_state_cmp(state, _BASE));
    return state;
}

layer_state_t layer_state_set_user(layer_state_t state) {
    rgblight_set_layer_state(1, layer_state_cmp(state, _FN1));
    rgblight_set_layer_state(2, layer_state_cmp(state, _FN2));
    rgblight_set_layer_state(3, layer_state_cmp(state, _FN3));
    return state;
}