/* Copyright 2021 Stan Gurenkov <rococo04_fox@icloud.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

#define M0(kc) MT(MOD_HYPR, kc)
#define M1(kc) MT(MOD_LGUI, kc)
#define M2(kc) MT(MOD_LCTL, kc)
#define M3(kc) MT(MOD_LALT, kc)
#define M4(kc) MT(MOD_LSFT, kc)
#define LTH1 LT(L_LEFT, KC_SPC)
#define LTH2 LT(L_NUM, KC_BSPC)
#define RTH1 LT(L_RIGHT, KC_SPC)
#define RTH2 LT(L_NUM, KC_ENT)
#define COPY LCMD(KC_C)
#define PASTE LCMD(KC_V)
// Layers
#define L_BASE 0
#define L_LEFT 1
#define L_RIGHT 2
#define L_NUM 3

bool is_cmd_tab_active = false;

enum custom_keycodes {
    CMD_TAB = SAFE_RANGE,
};
// clang-format off
const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
// L_BASE
	LAYOUT(
    KC_ESC,         KC_Q,      KC_W,       KC_E,      KC_R,      KC_T,       KC_Y,     KC_U,     KC_I,     KC_O,     KC_P,         KC_DEL,
    KC_TAB,         M4(KC_A),  M3(KC_S),   M2(KC_D),  M1(KC_F),  M0(KC_G),   M0(KC_H), M1(KC_J), M2(KC_K), M3(KC_L), M4(KC_COLN),  KC_QUOT,
    KC_GRV,         KC_Z,      KC_X,       KC_C,      KC_V,      KC_B,       KC_N,     KC_M,     KC_COMM,  KC_DOT,   KC_SLSH,      KC_BSLS,
    OSM(MOD_LSFT),  KC_LEAD,   KC_LGUI,    LTH1,      XXXXXXX,   LTH2,       RTH2,     XXXXXXX,  RTH1,     KC_RGUI,  KC_LEAD,      OSM(MOD_HYPR)),

// L_LEFT
    LAYOUT(
    _______, XXXXXXX,   XXXXXXX, KC_EQL,  KC_PERC, KC_AT,        COPY,     KC_UNDS, KC_HASH, RALT(KC_SPC), KC_PLUS,  _______,
    _______, KC_LSHIFT, KC_LALT, KC_LCTL, KC_LGUI, KC_HYPR,      KC_LEFT,  KC_DOWN, KC_UP,   KC_RIGHT,     KC_LBRC,  KC_RBRC,
    _______, XXXXXXX,   KC_EXLM, KC_CIRC, XXXXXXX, KC_HOME,      KC_END,   KC_MINS, KC_LPRN, KC_RPRN,      PASTE,    XXXXXXX,
    _______, KC_BRID,   KC_BRIU, _______, _______,  _______,     _______, _______, _______,  KC_VOLD,      KC_VOLU,  _______),

// L_RIGHT
    LAYOUT(
    _______, XXXXXXX, XXXXXXX, KC_EQL,  KC_PERC,      KC_AT,        COPY,    KC_UNDS, KC_HASH,  RALT(KC_SPC), KC_PLUS,  _______,
    _______, KC_AMPR, KC_ASTR, KC_DLR,  LGUI(KC_GRV), XXXXXXX,      KC_LEFT, KC_DOWN, KC_UP,    KC_RIGHT,     KC_RSFT,  KC_RBRC,
    _______, XXXXXXX, KC_EXLM, KC_CIRC, XXXXXXX,      KC_HOME,      KC_END,  KC_MINS, KC_LPRN,  KC_RPRN,      PASTE,    XXXXXXX,
    _______, KC_BRID, KC_BRIU, _______, _______,      _______,      _______, _______, _______,  KC_VOLD,      KC_VOLU,  _______),

// L_NUM
  	LAYOUT(
    _______,  XXXXXXX,     KC_F7,     KC_F8,     KC_F9,     KC_F12,         KC_MINS,    KC_7,     KC_8,     KC_9,                  KC_COMM,              _______,
    _______,  M4(KC_LSFT), M3(KC_F4), M2(KC_F5), M1(KC_F6), M0(KC_F11),     M0(KC_DOT), M1(KC_4), M2(KC_5), M3(KC_6),              M4(KC_0),             _______,
    _______,  XXXXXXX,     KC_F1,     KC_F2,     KC_F3,     KC_F10,         KC_PLUS,    KC_1,     KC_2,     KC_3,                  KC_DOT,               _______,
    _______,  _______,     _______,   _______,   _______,   _______,        _______,    _______,  _______,  KC_MEDIA_PREV_TRACK ,  KC_MEDIA_NEXT_TRACK,  KC_MEDIA_PLAY_PAUSE),

    LAYOUT(
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______),
};
// clang-format on
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    switch (keycode) {
        case CMD_TAB:
            if (record->event.pressed) {
                register_code(KC_LCMD);
                tap_code(KC_TAB);
                layer_on(2);
            } else {
                unregister_code(KC_LCMD);
                layer_off(2);
            }
            break;
        case KC_ESC:
            layer_clear();
    }
    return true;
}

LEADER_EXTERNS();

void matrix_scan_user(void) {
    LEADER_DICTIONARY() {
        leading = false;
        leader_end();

        // Cancel task CTRL+C
        SEQ_ONE_KEY(KC_C) { tap_code16(C(KC_C)); }
        // copy
        SEQ_ONE_KEY(KC_Y) { tap_code16(G(KC_C)); }
        // cut
        SEQ_ONE_KEY(KC_X) { tap_code16(G(KC_X)); }
        // paste
        SEQ_ONE_KEY(KC_P) { tap_code16(G(KC_V)); }
        // undo
        SEQ_ONE_KEY(KC_U) { tap_code16(G(KC_Z)); }
        // redo
        SEQ_ONE_KEY(KC_R) { tap_code16(S(G(KC_Z))); }
        // delete line
        SEQ_TWO_KEYS(KC_D, KC_D) {
            register_code(KC_LGUI);

            tap_code(KC_RIGHT);

            tap_code(KC_BSPACE);

            unregister_code(KC_LGUI);
        }
        // go to the beginning of the string
        SEQ_ONE_KEY(KC_H) { tap_code16(G(KC_LEFT)); }
        // go to the end of the string
        SEQ_ONE_KEY(KC_L) { tap_code16(G(KC_RIGHT)); }
    }