#include <Stepper.h>

#define STEPS 200

Stepper stepper(STEPS, 8, 10, 9, 11);

int urobilKrokov = 0;

int r = 2;
int g = 3;
int b = 4;

int button = 6;

int steps;
int dozadu;

bool stl = true;

/*const byte numChars = 32;
char receivedChars[numChars];

boolean newData = false;*/


void setup() {
  stepper.setSpeed(60);

  pinMode(r, OUTPUT);
  pinMode(g, OUTPUT);
  pinMode(b, OUTPUT);

  pinMode(button, INPUT);
  digitalWrite(button, HIGH);

  Serial.begin(9600);

  Serial.println("zadaj o kolko sa ma posunut:");
}

void loop() 
{
  /*bool value = digitalRead(button);*/

  digitalWrite(r, LOW);
  digitalWrite(g, HIGH);

  if (Serial.available() > 0) {
    String input = Serial.readStringUntil('\n');

    input.trim();

    if (input.length() > 0 && input.toInt() != 0) {
      int steps = input.toInt();

      urobilKrokov += steps;

      stepper.step(steps);

      Serial.print("Posunul o: ");
      Serial.print(steps);
      Serial.print(" krokov. Spravil: ");
      Serial.println(urobilKrokov);

      Serial.println("zadaj o kolko sa ma posunut:");

    } else {
      Serial.println("nezadal si cislo");
    }

  }
    if (digitalRead(button) == LOW && stl == true)
    {
      digitalWrite(g, LOW);
      digitalWrite(r, HIGH);
      Serial.println("-------------------------------------");
      Serial.println("Stepper sa vracia!");

      stepper.step(-urobilKrokov);

      urobilKrokov = 0;
      Serial.println("Stepper sa vratil na hodnotu 0");

      Serial.println("-------------------------------------");

      Serial.println("zadaj o kolko sa ma posunut:");
    } 
    if (digitalRead(5) != LOW && stl != true)
    {
      stl = true;
    }
}

/*void recvWithEndMarker() {
    static byte ndx = 0;
    char endMarker = '\n';
    char rc;
    
    while (Serial.available() > 0 && newData == false) {
        rc = Serial.read();

        if (rc != endMarker) {
            receivedChars[ndx] = rc;
            ndx++;
            if (ndx >= numChars) {
                ndx = numChars - 1;
            }
        }
        else {
            receivedChars[ndx] = '\0'; // terminate the string
            ndx = 0;
            newData = true;
        }
    }
}

void showNewData() {
    if (newData == true) {
        Serial.print("This just in ... ");
        Serial.println(receivedChars);
        newData = false;
    }
}*/