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#include "drashna.h"
#include "rgb_stuff.h"
#include "eeprom.h"

#if defined(RGBLIGHT_ENABLE)
extern rgblight_config_t rgblight_config;
bool has_initialized;
#elif defined(RGB_MATRIX_ENABLE)
extern rgb_config_t rgb_matrix_config;
#endif

#ifdef RGBLIGHT_ENABLE
void rgblight_sethsv_default_helper(uint8_t index) {
    rgblight_sethsv_at(rgblight_config.hue, rgblight_config.sat, rgblight_config.val, index);
}
#endif // RGBLIGHT_ENABLE

#ifdef INDICATOR_LIGHTS
void set_rgb_indicators(uint8_t this_mod, uint8_t this_led, uint8_t this_osm) {
    if (userspace_config.rgb_layer_change && biton32(layer_state) == 0) {
        if ( (this_mod | this_osm) & MOD_MASK_SHIFT || this_led & (1<<USB_LED_CAPS_LOCK) ) {
        #ifdef SHFT_LED1
            rgblight_sethsv_at(120, 255, 255, SHFT_LED1);
        #endif // SHFT_LED1
        #ifdef SHFT_LED2
            rgblight_sethsv_at(120, 255, 255, SHFT_LED2);
        #endif // SHFT_LED2
        } else {
        #ifdef SHFT_LED1
            rgblight_sethsv_default_helper(SHFT_LED1);
        #endif // SHFT_LED1
        #ifdef SHFT_LED2
            rgblight_sethsv_default_helper(SHFT_LED2);
        #endif // SHFT_LED2
        }
        if ( (this_mod | this_osm) & MOD_MASK_CTRL) {
        #ifdef CTRL_LED1
            rgblight_sethsv_at(0, 255, 255, CTRL_LED1);
        #endif // CTRL_LED1
        #ifdef CTRL_LED2
            rgblight_sethsv_at(0, 255, 255, CTRL_LED2);
        #endif // CTRL_LED2
        } else {
        #ifdef CTRL_LED1
            rgblight_sethsv_default_helper(CTRL_LED1);
        #endif // CTRL_LED1
        #ifdef CTRL_LED2
            rgblight_sethsv_default_helper(CTRL_LED2);
        #endif // CTRL_LED2
        }
        if ( (this_mod | this_osm) & MOD_MASK_GUI) {
        #ifdef GUI_LED1
            rgblight_sethsv_at(51, 255, 255, GUI_LED1);
        #endif // GUI_LED1
        #ifdef GUI_LED2
            rgblight_sethsv_at(51, 255, 255, GUI_LED2);
        #endif // GUI_LED2
        } else {
        #ifdef GUI_LED1
            rgblight_sethsv_default_helper(GUI_LED1);
        #endif // GUI_LED1
        #ifdef GUI_LED2
            rgblight_sethsv_default_helper(GUI_LED2);
        #endif // GUI_LED2
        }
        if ( (this_mod | this_osm) & MOD_MASK_ALT) {
        #ifdef ALT_LED1
            rgblight_sethsv_at(240, 255, 255, ALT_LED1);
        #endif // ALT_LED1
        #ifdef GUI_LED2
            rgblight_sethsv_at(240, 255, 255, ALT_LED2);
        #endif // GUI_LED2
        } else {
        #ifdef GUI_LED1
            rgblight_sethsv_default_helper(ALT_LED1);
        #endif // GUI_LED1
        #ifdef GUI_LED2
            rgblight_sethsv_default_helper(ALT_LED2);
        #endif // GUI_LED2
        }
    }
}

void matrix_scan_indicator(void) {
    if (has_initialized) {
        set_rgb_indicators(get_mods(), host_keyboard_leds(), get_oneshot_mods());
    }
}
#endif //INDICATOR_LIGHTS

#ifdef RGBLIGHT_TWINKLE
static rgblight_fadeout lights[RGBLED_NUM];

__attribute__ ((weak))
bool rgblight_twinkle_is_led_used_keymap(uint8_t index) { return false; }

bool rgblight_twinkle_is_led_used(uint8_t index) {
    switch (index) {
#ifdef INDICATOR_LIGHTS
#ifdef SHFT_LED1
        case SHFT_LED1:
            return true;
#endif //SHFT_LED1
#ifdef SHFT_LED2
        case SHFT_LED2:
            return true;
#endif //SHFT_LED2
#ifdef CTRL_LED1
        case CTRL_LED1:
            return true;
#endif //CTRL_LED1
#ifdef CTRL_LED2
        case CTRL_LED2:
            return true;
#endif //CTRL_LED2
#ifdef GUI_LED1
        case GUI_LED1:
            return true;
#endif //GUI_LED1
#ifdef GUI_LED2
        case GUI_LED2:
            return true;
#endif //GUI_LED2
#ifdef ALT_LED1
        case ALT_LED1:
            return true;
#endif //ALT_LED1
#ifdef ALT_LED2
        case ALT_LED2:
            return true;
#endif //ALT_LED2
#endif //INDICATOR_LIGHTS
        default:
            return rgblight_twinkle_is_led_used_keymap(index);
  }
}

void scan_rgblight_fadeout(void) { // Don't effing change this function .... rgblight_sethsv is supppppper intensive
    bool litup = false;
    for (uint8_t light_index = 0 ; light_index < RGBLED_NUM ; ++light_index ) {
        if (lights[light_index].enabled && timer_elapsed(lights[light_index].timer) > 10) {
        rgblight_fadeout *light = &lights[light_index];
        litup = true;

        if (light->life) {
            light->life -= 1;
            if (biton32(layer_state) == 0) {
                sethsv(light->hue + rand() % 0xF, 255, light->life, (LED_TYPE *)&led[light_index]);
            }
            light->timer = timer_read();
        }
        else {
            if (light->enabled && biton32(layer_state) == 0) {
                rgblight_sethsv_default_helper(light_index);
            }
            litup = light->enabled = false;
        }
        }
    }
    if (litup && biton32(layer_state) == 0) {
        rgblight_set();
    }
}

void start_rgb_light(void) {

    uint8_t indices[RGBLED_NUM];
    uint8_t indices_count = 0;
    uint8_t min_life = 0xFF;
    uint8_t min_life_index = -1;
    for (uint8_t index = 0 ; index < RGBLED_NUM ; ++index ) {
      if (rgblight_twinkle_is_led_used(index)) { continue; }
      if (lights[index].enabled) {
        if (min_life_index == -1 ||
          lights[index].life < min_life)
        {
          min_life = lights[index].life;
          min_life_index = index;
        }
        continue;
      }

      indices[indices_count] = index;
      ++indices_count;
    }

    uint8_t light_index;
    if (!indices_count) {
        light_index = min_life_index;
    }
    else {
      light_index = indices[rand() % indices_count];
    }

    rgblight_fadeout *light = &lights[light_index];
    light->enabled = true;
    light->timer = timer_read();
    light->life = 0xC0 + rand() % 0x40;

    light->hue = rgblight_config.hue + (rand() % 0xB4) - 0x54;

    rgblight_sethsv_at(light->hue, 255, light->life, light_index);
}
#endif


bool process_record_user_rgb(uint16_t keycode, keyrecord_t *record) {
    if ((keycode >= QK_MOD_TAP && keycode <= QK_MOD_TAP_MAX) || (keycode >= QK_LAYER_TAP && keycode <= QK_LAYER_TAP_MAX)) {
        keycode = keycode & 0xFF;
    }
    switch (keycode) {
#ifdef RGBLIGHT_TWINKLE
        case KC_A ... KC_SLASH:
        case KC_F1 ... KC_F12:
        case KC_INSERT ... KC_UP:
        case KC_KP_SLASH ... KC_KP_DOT:
        case KC_F13 ... KC_F24:
        case KC_AUDIO_MUTE ... KC_MEDIA_REWIND:
            if (record->event.pressed) { start_rgb_light(); }
            return true; break;
#endif // RGBLIGHT_TWINKLE
        case KC_RGB_T:  // This allows me to use underglow as layer indication, or as normal
#if defined(RGBLIGHT_ENABLE) || defined(RGB_MATRIX_ENABLE)
            if (record->event.pressed) {
                userspace_config.rgb_layer_change ^= 1;
                xprintf("rgblight layer change [EEPROM]: %u\n", userspace_config.rgb_layer_change);
                eeconfig_update_user(userspace_config.raw);
                if (userspace_config.rgb_layer_change) {
                    layer_state_set(layer_state); // This is needed to immediately set the layer color (looks better)
                }
            }
#endif // RGBLIGHT_ENABLE
            return false; break;
#ifdef RGBLIGHT_ENABLE
        case RGB_MODE_FORWARD ... RGB_MODE_GRADIENT: // quantum_keycodes.h L400 for definitions
            if (record->event.pressed) { //This disables layer indication, as it's assumed that if you're changing this ... you want that disabled
                if (userspace_config.rgb_layer_change) {
                    userspace_config.rgb_layer_change = false;
                    xprintf("rgblight layer change [EEPROM]: %u\n", userspace_config.rgb_layer_change);
                    eeconfig_update_user(userspace_config.raw);
                }
            }
            return true; break;
#endif // RGBLIGHT_ENABLE
  }
    return true;
}



void keyboard_post_init_rgb(void) {
#if defined(RGBLIGHT_ENABLE) && defined(RGBLIGHT_STARTUP_ANIMATION)
    if (userspace_config.rgb_layer_change) { rgblight_enable_noeeprom(); }
    if (rgblight_config.enable) {
        layer_state_set_user(layer_state);
        uint16_t old_hue = rgblight_config.hue;
        rgblight_mode_noeeprom(RGBLIGHT_MODE_STATIC_LIGHT);
        for (uint16_t i = 255; i > 0; i--) {
            rgblight_sethsv_noeeprom( ( i + old_hue) % 255, 255, 255);
            matrix_scan();
            wait_ms(10);
        }
    }
#endif
    layer_state_set_user(layer_state);
}

void matrix_scan_rgb(void) {
#ifdef RGBLIGHT_TWINKLE
    scan_rgblight_fadeout();
#endif // RGBLIGHT_ENABLE

#ifdef INDICATOR_LIGHTS
    matrix_scan_indicator();
#endif

}


uint32_t layer_state_set_rgb(uint32_t state) {
#ifdef RGBLIGHT_ENABLE
    if (userspace_config.rgb_layer_change) {
        switch (biton32(state)) {
            case _MACROS:
                rgblight_sethsv_noeeprom_orange();
                userspace_config.is_overwatch ? rgblight_mode_noeeprom(RGBLIGHT_MODE_SNAKE + 2) : rgblight_mode_noeeprom(RGBLIGHT_MODE_SNAKE + 3);
                break;
            case _MEDIA:
                rgblight_sethsv_noeeprom_chartreuse();
                rgblight_mode_noeeprom(RGBLIGHT_MODE_KNIGHT + 1);
                break;
            case _GAMEPAD:
                rgblight_sethsv_noeeprom_orange();
                rgblight_mode_noeeprom(RGBLIGHT_MODE_SNAKE + 2);
                break;
            case _DIABLO:
                rgblight_sethsv_noeeprom_red();
                rgblight_mode_noeeprom(RGBLIGHT_MODE_BREATHING + 3);
                break;
            case _RAISE:
                rgblight_sethsv_noeeprom_yellow();
                rgblight_mode_noeeprom(RGBLIGHT_MODE_BREATHING + 3);
                break;
            case _LOWER:
                rgblight_sethsv_noeeprom_green();
                rgblight_mode_noeeprom(RGBLIGHT_MODE_BREATHING + 3);
                break;
            case _ADJUST:
                rgblight_sethsv_noeeprom_red();
                rgblight_mode_noeeprom(RGBLIGHT_MODE_KNIGHT + 2);
                break;
            default: //  for any other layers, or the default layer
                switch (biton32(default_layer_state)) {
                    case _COLEMAK:
                        rgblight_sethsv_noeeprom_magenta(); break;
                    case _DVORAK:
                        rgblight_sethsv_noeeprom_springgreen(); break;
                    case _WORKMAN:
                        rgblight_sethsv_noeeprom_goldenrod(); break;
                    case _NORMAN:
                        rgblight_sethsv_noeeprom_coral(); break;
                    case _MALTRON:
                        rgblight_sethsv_noeeprom_yellow(); break;
                    case _EUCALYN:
                        rgblight_sethsv_noeeprom_pink(); break;
                    case _CARPLAX:
                        rgblight_sethsv_noeeprom_blue(); break;
                    default:
                        rgblight_sethsv_noeeprom_cyan(); break;
                }
                biton32(state) == _MODS ? rgblight_mode_noeeprom(RGBLIGHT_MODE_BREATHING) : rgblight_mode_noeeprom(RGBLIGHT_MODE_STATIC_LIGHT); // if _MODS layer is on, then breath to denote it
                break;
        }
    }
#endif // RGBLIGHT_ENABLE

    return state;
}