/* Copyright 2020 Richard Titmuss (richard.titmuss@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 torn_layers { _QWERTY, _LOWER, _RAISE, _ADJUST };

#define S_BSPC LSFT_T(KC_BSPC)
#define R_DEL LT(_RAISE, KC_DEL)
#define G_ENT LGUI_T(KC_ENT)
#define L_SPC LT(_LOWER, KC_SPC)

// clang-format off
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

/* Qwerty
 * ,-----------------------------------------.    ,-----------------------------------------.
 * | Tab  |   Q  |   W  |   E  |   R  |   T  |    |   Y  |   U  |   I  |   O  |   P  |  '   |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * | `    |   A  |   S  |   D  |   F  |   G  |    |   H  |   J  |   K  |   L  |   ;  |  [   |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * | \    |   Z  |   X  |   C  |   V  |   B  |    |   N  |   M  |   ,  |   .  |   /  |  ]   |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 *               | ____ | Ctrl | Bksp | Del  |    |Enter |Space | Alt  | ____ |
 *               |      |      |Shift |Raise |    | Gui  |Lower |      |      |
 *               `---------------------------'    `---------------------------'
 */
[_QWERTY] = LAYOUT_split_3x6_4(
    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,      KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_QUOT,
    KC_GRV,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,      KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_LBRC,
    KC_BSLS, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,      KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RBRC ,
                      R_DEL,   KC_LCTL, S_BSPC,  R_DEL,     G_ENT,   L_SPC,   KC_RALT, G_ENT
),

/* Lower
 * ,-----------------------------------------.    ,-----------------------------------------.
 * | Esc  |   !  |   @  |   #  |   $  |   %  |    |   ^  |   &  |   *  |   (  |   )  |      |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * | =    |   1  |   2  |   3  |   4  |   5  |    |   6  |   7  |   8  |   9  |   0  |  -   |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * | _    |      |      |      |      |      |    |      |      |   ,  |   .  |   /  |  +   |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 *               | ____ | Ctrl | Bksp | Del  |    |Enter |Space | Alt  | ____ |
 *               |      |      |Shift |Raise |    | Gui  |Lower |      |      |
 *               `---------------------------'    `---------------------------'
 */
[_LOWER] = LAYOUT_split_3x6_4(
    KC_ESC,  KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC,   KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, _______,
    KC_EQL,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,      KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_PMNS,
    KC_UNDS, _______, _______, _______, _______, _______,   _______, _______, KC_COMM, KC_DOT,  KC_SLSH, KC_PPLS,
                      KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
),

/* Raise
 * ,-----------------------------------------.    ,-----------------------------------------.
 * |      |  F1  |  F2  |  F3  |  F4  |  F5  |    |      |   &  |   *  |   (  |   )  |      |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * |      |  F6  |  F7  |  F8  |  F9  |  F10 |    | Home | Left | Down | Right| End  | PgUp |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * |      |  F11 |  F12 |      |      |      |    |      |      |      |      |      | PgDn |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 *               | ____ | Ctrl | Bksp | Del  |    |Enter |Space | Alt  | ____ |
 *               |      |      |Shift |Raise |    | Gui  |Lower |      |      |
 *               `---------------------------'    `---------------------------'
 */
[_RAISE] = LAYOUT_split_3x6_4(
    _______, KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,     _______, S(A(KC_LEFT)), KC_UP, S(A(KC_RGHT)), _______, _______,
    _______, KC_F6,   KC_F7,   KC_F8,   KC_F9,   KC_F10,    KC_HOME, KC_LEFT, KC_DOWN, KC_RGHT, KC_END,  KC_PGUP,
    _______, KC_F11,  KC_F12,  _______, _______, _______,   A(KC_BSPC), A(KC_LEFT), S(KC_DOWN), A(KC_RGHT), _______, KC_PGDN ,
                      KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
),

/* Adjust (Lower + Raise)
 * ,-----------------------------------------.    ,-----------------------------------------.
 * |      |      |      |      |      |      |    |      |      |      |      |      |      |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * |      |      |      |      |      |      |    |      |      |      |      |      |      |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 * |      |      |      |      |      |      |    |      |      |      |      |      |      |
 * |------+------+------+------+------+------|    |------+------+------+------+------+------|
 *               | ____ | Ctrl | Bksp | Del  |    |Enter |Space | Alt  | ____ |
 *               |      |      |Shift |Raise |    | Gui  |Lower |      |      |
 *               `---------------------------'    `---------------------------'
 */
[_ADJUST] = LAYOUT_split_3x6_4(
    _______, _______, _______, _______, _______, _______,   _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______,   _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______,   _______, _______, _______, _______, _______, _______,
                      KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
)

};

const uint16_t PROGMEM encoder_keymaps[][2][2] = {
    [_QWERTY] =  { { C(S(KC_TAB)), C(KC_TAB) },     { KC_PGDN,      KC_PGUP } },
    [_LOWER]  =  { { C(KC_LEFT),   C(KC_RGHT) },    { KC__VOLDOWN,  KC__VOLUP } },
    [_RAISE]  =  { { KC_TRNS,      KC_TRNS },       { G(KC_TAB),    G(S(KC_TAB)) } },
    [_ADJUST] =  { { KC_TRNS,      KC_TRNS },       { KC_TRNS,      KC_TRNS } },
};
// clang-format on

layer_state_t layer_state_set_user(layer_state_t state) {
    torn_set_led(0, IS_LAYER_ON_STATE(state, _RAISE));
    torn_set_led(1, IS_LAYER_ON_STATE(state, _LOWER));
    return state;
}