//#include <Keypad.h>
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);  //Change the HEX address

const int buttonPin = 11;  
const int ledPin = 13;  
const int buttonPin2 = 12;  
const int ledPin2 = 9;

int Status1 = 0;
int Status2 = 0;

int Hours = 00;
int Minutes = 00;
int Seconds = 00;
int trycount = 0;
int keycount = 0;
int i = 0;

int redled = A2;
int yellowled = A1;
int greenled = A3;

int hourstenscode;
int hoursonescode;
int mintenscode;
int minonescode;
int sectenscode;
int seconescode;

long secMillis = 0;
long interval = 1000;


void setup() 
{
  pinMode(redled, OUTPUT);
  pinMode(yellowled, OUTPUT);
  pinMode(greenled, OUTPUT);
  digitalWrite(redled,HIGH);
  digitalWrite(yellowled,HIGH);
  digitalWrite(greenled,HIGH);

  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(buttonPin2, INPUT);

  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Bomba   ARDUBA");
  delay(1000);

  if (keycount == 11);
  {
    Hours = (0 * 10) + 0;
    Minutes = (0 * 10) + 1;
    Seconds = (0 * 10) + 0;
    delay(10);
    lcd.noBlink();
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("Timer set at:");
    if (Hours >= 10)
    {
      lcd.setCursor (7, 1);
      lcd.print (Hours);
    }
    if (Hours < 10)
    {
      lcd.setCursor (7, 1);
      lcd.write (" ");
      lcd.setCursor (8, 1);
      lcd.print (Hours);
    }
    lcd.print (":");

    if (Minutes >= 10)
    {
      lcd.setCursor (10, 1);
      lcd.print (Minutes);
    }
    if (Minutes < 10)
    {
      lcd.setCursor (10, 1);
      lcd.write (" ");
      lcd.setCursor (11, 1);
      lcd.print (Minutes);
    }
    lcd.print (":");

    if (Seconds >= 10)
    {
      lcd.setCursor (13, 1);
      lcd.print (Seconds);
    }

    if (Seconds < 10)
    {
      lcd.setCursor (13, 1);
      lcd.write (" ");
      lcd.setCursor (14, 1);
      lcd.print (Seconds);
    }
    delay(3000);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("spremno");
    delay (500);
    keycount = 12;
  }

  while (keycount == 12)
  {
    Status1 = digitalRead(buttonPin);
    

    if (Status1 == HIGH)
    {
      digitalWrite(ledPin, HIGH);
      digitalWrite(ledPin2, LOW);   
    
      tone(10, 5000, 100);
      delay(50);
      tone(10, 0, 100);
      delay(50);
      tone(10, 5000, 100);
      delay(50);
      tone(10, 0, 100);
      delay(50);
      tone(10, 5000, 100);
      delay(50);
      tone(10, 0, 100);
      lcd.clear();
      lcd.print ("Bomb aktivirana!");
      lcd.setCursor(0, 1);
      lcd.print("Countdown start");
      delay(3000);
      lcd.clear();
      keycount = 0;
    }

    Status2 = digitalRead(buttonPin2);

    if (Status2 == HIGH)
    {
      digitalWrite(ledPin, LOW);
      digitalWrite(ledPin2, HIGH);  

      tone(10, 5000, 100);
      delay(50);
      tone(10, 0, 100);
      delay(50);
      tone(10, 5000, 100);
      delay(50);
      tone(10, 0, 100);
      delay(50);
      tone(10, 5000, 100);
      delay(50);
      tone(10, 0, 100);
      lcd.clear();
      lcd.print ("Bomb aktivirana!");
      lcd.setCursor(0, 1);
      lcd.print("Countdown start");
      delay(3000);
      lcd.clear();
      keycount = 0;
    }
  }
}

void loop()
{
  Serial.print(Seconds);
  Serial.println();

  if (Hours <= 0)
  {
    if ( Minutes < 0 )
    {
      lcd.noBlink();
      lcd.clear();
      lcd.home();
      lcd.print("Bomba je ");
      lcd.setCursor (0, 1);
      lcd.print("Explodirala!");

      while (Minutes < 0)
      {
        digitalWrite(redled, LOW);
        tone(10, 7000, 100);
        delay(100);
        digitalWrite(redled, HIGH);
        tone(10, 7000, 100);
        delay(100);
        digitalWrite(yellowled, LOW);
        tone(10, 7000, 100);
        delay(100);
        digitalWrite(yellowled, HIGH);
        tone(10, 7000, 100);
        delay(100);
        digitalWrite(greenled, LOW);
        tone(10, 7000, 100);
        delay(100);
        digitalWrite(greenled, HIGH);
        tone(10, 7000, 100);
        delay(100);
      }
    }
  }
  lcd.setCursor (0, 1);
  lcd.print ("Timer:");

  if (Hours >= 10)
  {
    lcd.setCursor (7, 1);
    lcd.print (Hours);
  }
  if (Hours < 10)
  {
    lcd.setCursor (7, 1);
    lcd.write (" ");
    lcd.setCursor (8, 1);
    lcd.print (Hours);
  }
  lcd.print (":");

  if (Minutes >= 10)
  {
    lcd.setCursor (10, 1);
    lcd.print (Minutes);
  }
  if (Minutes < 10)
  {
    lcd.setCursor (10, 1);
    lcd.write (" ");
    lcd.setCursor (11, 1);
    lcd.print (Minutes);
  }
  lcd.print (":");

  if (Seconds >= 10)
  {
    lcd.setCursor (13, 1);
    lcd.print (Seconds);
  }

  if (Seconds < 10)
  {
    lcd.setCursor (13, 1);
    lcd.write (" ");
    lcd.setCursor (14, 1);
    lcd.print (Seconds);
  }

  if (Hours < 0)
  {
    Hours = 0;
  }

  if (Minutes < 0)
  {
    Hours --;
    Minutes = 59;
  }

  if (Seconds < 1)
  {
    Minutes --;
    Seconds = 59;
  }

  if (Seconds > 0)
  {
    unsigned long currentMillis = millis();

    if (currentMillis - secMillis > interval)
    {
      tone(10, 7000, 50);
      secMillis = currentMillis;
      Seconds --;
      digitalWrite(yellowled, LOW);
      delay(10);
      digitalWrite(yellowled, HIGH);
      delay(10);
    }
  }
}