/* Copyright 2018 James Laird-Wah
 *
 * 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 "rgb_matrix.h"
#include "util.h"

/* Each driver needs to define the struct
 *    const rgb_matrix_driver_t rgb_matrix_driver;
 * All members must be provided.
 * Keyboard custom drivers can define this in their own files, it should only
 * be here if shared between boards.
 */

#if defined(RGB_MATRIX_IS31FL3218)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = is31fl3218_init,
    .flush         = is31fl3218_update_pwm_buffers,
    .set_color     = is31fl3218_set_color,
    .set_color_all = is31fl3218_set_color_all,
};

#elif defined(RGB_MATRIX_IS31FL3731)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = is31fl3731_init_drivers,
    .flush         = is31fl3731_flush,
    .set_color     = is31fl3731_set_color,
    .set_color_all = is31fl3731_set_color_all,
};

#elif defined(RGB_MATRIX_IS31FL3733)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = is31fl3733_init_drivers,
    .flush         = is31fl3733_flush,
    .set_color     = is31fl3733_set_color,
    .set_color_all = is31fl3733_set_color_all,
};

#elif defined(RGB_MATRIX_IS31FL3736)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = is31fl3736_init_drivers,
    .flush         = is31fl3736_flush,
    .set_color     = is31fl3736_set_color,
    .set_color_all = is31fl3736_set_color_all,
};

#elif defined(RGB_MATRIX_IS31FL3737)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = is31fl3737_init_drivers,
    .flush         = is31fl3737_flush,
    .set_color     = is31fl3737_set_color,
    .set_color_all = is31fl3737_set_color_all,
};

#elif defined(RGB_MATRIX_IS31FL3741)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = is31fl3741_init_drivers,
    .flush         = is31fl3741_flush,
    .set_color     = is31fl3741_set_color,
    .set_color_all = is31fl3741_set_color_all,
};

#elif defined(IS31FLCOMMON)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = IS31FL_RGB_init_drivers,
    .flush         = IS31FL_common_flush,
    .set_color     = IS31FL_RGB_set_color,
    .set_color_all = IS31FL_RGB_set_color_all,
};

#elif defined(RGB_MATRIX_SNLED27351)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = snled27351_init_drivers,
    .flush         = snled27351_flush,
    .set_color     = snled27351_set_color,
    .set_color_all = snled27351_set_color_all,
#        if defined(RGB_MATRIX_DRIVER_SHUTDOWN_ENABLE)
    .shutdown = snled27351_shutdown,
    .exit_shutdown = snled27351_exit_shutdown
#        endif
};
#elif defined(RGB_MATRIX_SNLED27351_SPI)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init = snled27351_init_drivers,
    .flush = snled27351_flush,
    .set_color = snled27351_set_color,
    .set_color_all = snled27351_set_color_all,
#        if defined(RGB_MATRIX_DRIVER_SHUTDOWN_ENABLE)
    .shutdown = snled27351_shutdown,
    .exit_shutdown = snled27351_exit_shutdown
#        endif
};
#elif defined(RGB_MATRIX_AW20216S)
const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = aw20216s_init_drivers,
    .flush         = aw20216s_flush,
    .set_color     = aw20216s_set_color,
    .set_color_all = aw20216s_set_color_all,
};

#elif defined(RGB_MATRIX_WS2812)
#    if defined(RGBLIGHT_WS2812)
#        pragma message "Cannot use RGBLIGHT and RGB Matrix using WS2812 at the same time."
#        pragma message "You need to use a custom driver, or re-implement the WS2812 driver to use a different configuration."
#    endif

// LED color buffer
rgb_led_t rgb_matrix_ws2812_array[RGB_MATRIX_LED_COUNT];
bool      ws2812_dirty = false;

static void init(void) {
    ws2812_dirty = false;
}

static void flush(void) {
    if (ws2812_dirty) {
        ws2812_setleds(rgb_matrix_ws2812_array, RGB_MATRIX_LED_COUNT);
        ws2812_dirty = false;
    }
}

// Set an led in the buffer to a color
static inline void setled(int i, uint8_t r, uint8_t g, uint8_t b) {
#    if defined(RGB_MATRIX_ENABLE) && defined(RGB_MATRIX_SPLIT)
    const uint8_t k_rgb_matrix_split[2] = RGB_MATRIX_SPLIT;
    if (!is_keyboard_left()) {
        if (i >= k_rgb_matrix_split[0]) {
            i -= k_rgb_matrix_split[0];
        } else {
            return;
        }
    } else if (i >= k_rgb_matrix_split[0]) {
        return;
    }
#    endif

    if (rgb_matrix_ws2812_array[i].r == r && rgb_matrix_ws2812_array[i].g == g && rgb_matrix_ws2812_array[i].b == b) {
        return;
    }

    ws2812_dirty                 = true;
    rgb_matrix_ws2812_array[i].r = r;
    rgb_matrix_ws2812_array[i].g = g;
    rgb_matrix_ws2812_array[i].b = b;
#    ifdef RGBW
    convert_rgb_to_rgbw(&rgb_matrix_ws2812_array[i]);
#    endif
}

static void setled_all(uint8_t r, uint8_t g, uint8_t b) {
    for (int i = 0; i < ARRAY_SIZE(rgb_matrix_ws2812_array); i++) {
        setled(i, r, g, b);
    }
}

const rgb_matrix_driver_t rgb_matrix_driver = {
    .init          = init,
    .flush         = flush,
    .set_color     = setled,
    .set_color_all = setled_all,
};

#endif
