#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#include <Stepper.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
const int stepsPerRevolution = 1028;


Stepper myStepper = Stepper(stepsPerRevolution, 9, 11, 10, 12);
void setup() {
  //Set the speed to 5 rpm:
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(A3, INPUT);
  pinMode(A2, INPUT);
  pinMode(A1, INPUT);
  pinMode(A0, INPUT);
  pinMode(6, INPUT);
  pinMode(7, INPUT);
  myStepper.setSpeed(10);
  lcd.begin();

  // Turn on the blacklight and print a message.
  lcd.backlight();
  lcd.print("Imeskite moneta");
  // Begin Serial communication at a baud rate of 9600:
  Serial.begin(9600);
}
boolean moneta = false;
boolean iskrito = false;
int daiktas = -1;
void loop() {
  int reading = analogRead(A3);
 Serial.println(reading);

  if(digitalRead(6) == LOW){
    moneta = true;
    Serial.write("HIGH");
    lcd.clear();
    lcd.print("Pasirinkite");
  }

  if(moneta){
    if(analogRead(A3) >= 1000){
      digitalWrite(2, HIGH);
      daiktas = 1;
    }
  /*   if(analogRead(A2) >= 1000){
      digitalWrite(3, HIGH);
      daiktas = 2;
    }
     if(analogRead(A1) >= 1000){
      digitalWrite(4, HIGH);
      daiktas = 3;
    }
     if(analogRead(A0) >= 1000){
      digitalWrite(5, HIGH);
      daiktas = 4;
    }*/
  }
  if(daiktas != -1){
      lcd.clear();
      lcd.print("Aciu, kad pirkote");
      lcd.setCursor(0,1);
      lcd.print("produktas:");
      //Serial.write(daiktas);
      lcd.setCursor(10,1);
      lcd.print(daiktas);
  }
   while(moneta && !iskrito && daiktas != -1){
      myStepper.step(128);
      if(digitalRead(7) == LOW){
        iskrito = true;
       }
   }
   if(moneta && iskrito && daiktas != -1){
    lcd.clear();
    lcd.print("Imeskite moneta");
    moneta = false;
    iskrito = false;
    daiktas = -1;
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
   }
  delay(100);
}