/*  https://www.reddit.com/r/olkb/comments/oxlqyi/common_anode_rgb_led_control_with_qmk/
 *  Code to include a specially wired button into the regular QMK keymap.
 *  This should go into keymap.c
 */

#ifdef ENC_BUTTON_PIN
    #include "matrix.h"
    #include "debounce.h"
    extern matrix_row_t raw_matrix[MATRIX_ROWS];  // raw values
    extern matrix_row_t matrix[MATRIX_ROWS];      // debounced values
#endif  //ENC_BUTTON_PIN


void keyboard_pre_init_user(void) {
    setPinInput(ENC_BUTTON_PIN);  //set encoder pin as an input
}

void matrix_scan_user(void) {
#ifdef ENC_BUTTON_PIN
    uint16_t prev_row_value = raw_matrix[ENC_ROW];          //save the current state of the row value

    if (readPin(ENC_BUTTON_PIN)) {                          //if encoder button is pressed (pin reads HIGH)
        raw_matrix[ENC_ROW] |= 1 << ENC_COL;                //  set encoder button state in matrix
    } else {                                                //if encoder is not pressed (pin reads LOW)
        raw_matrix[ENC_ROW] &= ~(1 << ENC_COL);             //  clear encoder button state in matrix
    }

    if ((prev_row_value != raw_matrix[ENC_ROW])) {          //if the encoder state was just changed
        debounce(raw_matrix, matrix, MATRIX_ROWS, true);    //  debounce the matrix
    }
#endif  //ENC_BUTTON_PIN
}