/* Copyright 2020 kamonanban
 *
 * 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 layer_names {
    _BASE = 0,
    _LOWER,
    _RAISE,
    _ADJUST
};

enum custom_keycodes {
    LOWER = SAFE_RANGE,
    RAISE,
    ADJUST
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [_BASE] = LAYOUT(
        KC_ESC,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_EQL,     KC_MINS, KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSLS,
        KC_GRV,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_LBRC,    KC_RBRC, KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_AT,
        KC_TAB,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_COMM,    KC_DOT,  KC_H,    KC_J,    KC_K,    KC_L,    KC_UP,   KC_SCLN,
        KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_SLSH,                      KC_B,    KC_N,    KC_M,    KC_LEFT, KC_DOWN, KC_RGHT,
        LOWER,   XXXXXXX, KC_LALT, KC_LCTL, KC_SPC,  KC_LGUI, KC_ENT,     KC_BSPC, KC_DEL,  KC_SPC,  KC_RCTL, KC_RALT, XXXXXXX, RAISE
    ),

    [_LOWER] = LAYOUT(
        _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   XXXXXXX,    XXXXXXX, XXXXXXX, KC_MINS, KC_EQL,  KC_INT3, KC_LBRC, KC_RBRC,
        _______, KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,  XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, KC_SCLN, KC_QUOT, KC_BSLS,
        _______, KC_F11,  KC_F12,  XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, KC_COMM, KC_DOT,  KC_SLSH, XXXXXXX,
        _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        LOWER,   XXXXXXX, _______, _______, _______, _______, _______,    _______, _______, _______, _______, _______, XXXXXXX, RAISE
    ),

    [_RAISE] = LAYOUT(
        _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        _______, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,                      XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        LOWER,   XXXXXXX, _______, _______, _______, _______, _______,    _______, _______, _______, _______, _______, XXXXXXX, RAISE
    ),

    [_ADJUST] = LAYOUT(
        _______, UG_TOGG, XXXXXXX, XXXXXXX, XXXXXXX, RGB_M_R, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, QK_BOOT,
        _______, UG_NEXT, UG_HUEU, UG_SATU, UG_VALU, RGB_M_SN,XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        _______, RGB_M_T, UG_HUED, UG_SATD, UG_VALD, RGB_M_K, XXXXXXX,    XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        _______, RGB_M_P, XXXXXXX, XXXXXXX, XXXXXXX, RGB_M_SW,                     XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX, XXXXXXX,
        LOWER,   XXXXXXX, _______, _______, _______, _______, _______,    _______, _______, _______, _______, _______, XXXXXXX, RAISE
    )
};

static inline void update_tri_layer_RGB(uint8_t layer1, uint8_t layer2, uint8_t layer3) {
    if (IS_LAYER_ON(layer1) && IS_LAYER_ON(layer2)) {
        layer_on(layer3);
    } else {
        layer_off(layer3);
    }
}

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case LOWER:
            if (record->event.pressed) {
                layer_on(_LOWER);
                update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
            } else {
                layer_off(_LOWER);
                update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
            }
            return false;
        case RAISE:
            if (record->event.pressed) {
                layer_on(_RAISE);
                update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
            } else {
                layer_off(_RAISE);
                update_tri_layer_RGB(_LOWER, _RAISE, _ADJUST);
            }
            return false;
        case ADJUST:
            if (record->event.pressed) {
                layer_on(_ADJUST);
            } else {
                layer_off(_ADJUST);
            }
            return false;
    }
    return true;
}