/* Copyright 2023 Moritz Plattner
 *
 * 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 layers{
    BASE,
    GAME,
    _FN1
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {

    [BASE] = LAYOUT_75_ansi(    /* keymap for layer 0 */
        KC_ESC,  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_F13, KC_PSCR,   KC_DEL,
        KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_MINS, KC_EQL,       KC_BSPC,     KC_PGUP,
        KC_TAB,  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_BSLS,     KC_PGDN,
        KC_CAPS, 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_HOME,
        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,   KC_END,
        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                             KC_RALT, MO(_FN1),KC_RCTL, KC_LEFT, KC_DOWN, KC_RGHT
    ),

    [GAME] = LAYOUT_75_ansi(    /* keymap for layer 1 - GAME disables WIN key and has RGB layer indicators */
        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_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_NO,   KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
    ),

    [_FN1] = LAYOUT_75_ansi(    /* keymap for layer 2 */
        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, RGB_TOG, RGB_VAD, RGB_VAI, KC_MPRV, KC_MPLY, KC_MNXT, KC_VOLD, KC_VOLU, KC_MUTE, 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,     RGB_RMOD,
        RGB_TOG, RGB_VAI, RGB_HUI, RGB_SAI, RGB_SPI, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,      KC_TRNS,     RGB_MOD,
        KC_TRNS, RGB_VAD, RGB_HUD, RGB_SAD, RGB_SPD, 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, NK_TOGG,KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
        KC_TRNS, TG(GAME),KC_TRNS,                            KC_TRNS,                            KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS
    ),
};

/* RGB matrix indicator code
It reads the current matrix color, offsets the hue by 30, 
and sets val to RGB_MATRIX_MAXIMUM_BRIGHTNESS (by default, 255)
This is applied to both caps lock, and other indicator keys for layer 1 */

bool rgb_matrix_indicators_user(void) {
    HSV hsv_ind = {rgb_matrix_get_hue()+30,255,RGB_MATRIX_MAXIMUM_BRIGHTNESS};
    RGB rgb_ind = hsv_to_rgb(hsv_ind);

    /* Sets Caps to different color as indicator. If RGB mode is rain, and caps indicator is off, the LED will always be off.
    This is to avoid having the LED persist on until the animation randomly refreshes it. */
    if (host_keyboard_led_state().caps_lock) {
      rgb_matrix_set_color(CAPS_LED_INDEX, rgb_ind.r, rgb_ind.g, rgb_ind.b);
    } else if (rgb_matrix_get_mode() == 10) {
      rgb_matrix_set_color(CAPS_LED_INDEX, 0, 0, 0);
    }

    /* Sets W, A, S, D, LGUI to a different color as layer indicator */
    if(IS_LAYER_ON(1)) {
      HSV hsv_ind = {rgb_matrix_get_hue()+30,255,RGB_MATRIX_MAXIMUM_BRIGHTNESS};
      RGB rgb_ind = hsv_to_rgb(hsv_ind);

      rgb_matrix_set_color(W_LED_INDEX, rgb_ind.r, rgb_ind.g, rgb_ind.b);
      rgb_matrix_set_color(A_LED_INDEX, rgb_ind.r, rgb_ind.g, rgb_ind.b);
      rgb_matrix_set_color(S_LED_INDEX, rgb_ind.r, rgb_ind.g, rgb_ind.b);
      rgb_matrix_set_color(D_LED_INDEX, rgb_ind.r, rgb_ind.g, rgb_ind.b);
      rgb_matrix_set_color(WIN_LED_INDEX, rgb_ind.r, rgb_ind.g, rgb_ind.b);
    }
    return true;
}

layer_state_t layer_state_set_user(layer_state_t state) {
    /* If reverting to base layer (no special LED effects) and rain animation is on, set "layer 1" mods back to matrix color to avoid single key persistence*/
    if(!IS_LAYER_ON_STATE(state, 1) && rgb_matrix_get_mode() == 10) {
        HSV hsv_mat = rgb_matrix_get_hsv();
        RGB rgb_mat = hsv_to_rgb(hsv_mat);

        rgb_matrix_set_color(W_LED_INDEX, rgb_mat.r, rgb_mat.g, rgb_mat.b);
        rgb_matrix_set_color(A_LED_INDEX, rgb_mat.r, rgb_mat.g, rgb_mat.b);
        rgb_matrix_set_color(S_LED_INDEX, rgb_mat.r, rgb_mat.g, rgb_mat.b);
        rgb_matrix_set_color(D_LED_INDEX, rgb_mat.r, rgb_mat.g, rgb_mat.b);
        rgb_matrix_set_color(WIN_LED_INDEX, rgb_mat.r, rgb_mat.g, rgb_mat.b);
    }
    return state;
}