#include <Wire.h>
#include <LiquidCrystal_I2C.h> // vloženie knižnice pre ovládanie LCD cez I2C
#include <Streaming.h>        //http://arduiniana.org/libraries/streaming/
#include <Time.h>             //http://playground.arduino.cc/Code/Time
#include <DS1302.h>


LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 20 chars and 4 line display

// rtc    RST, DAT,CLK
DS1302 rtc(2, 3, 4);

int h=12; //hodin
int m=20; //minuta
int s=15; //sekunda
int dd; //den
int mm; //mesiac
int yy; //rok
int reading1;
int reading2;
bool btn1=false;
bool btn2=false;
bool changed;
int index=0;
Time t;
void setup() {
  pinMode(7, INPUT);
  pinMode(6, INPUT);
  lcd.init();                // initialize the lcd
  rtc.halt(false);
  rtc.writeProtect(false);
  delay ( 1000 );
  Serial.begin(9600);
  lcd.backlight();
////////////////////////////
rtc.setTime(12, 30, 30);     //toto vymaz
  rtc.setDate(21, 4, 2017);  //toto vymaz
/////
}
void loop() {
  t = rtc.getTime();
  dd=t.date;
  mm=prevodMesiacNaCislo(rtc.getMonthStr());
  yy=t.year;
  h=t.hour;
  m=t.min;
  s=t.sec;
  reading1 =digitalRead(7);
  reading2 =digitalRead(6);
  if(reading1==1 && btn1)
  {
    index++;
    if(index>5)
      index=0;
    btn1=false;
  }
  else if(reading1==0 && !btn1)
    btn1=true;
  if(reading2==1 && btn2)
  {
    btn2=false;
    if(index==0)
    {
      h++;
	  if(h>23)
		h=0;
    }
    else if(index==1)
    {
      m++;
	  if(m>59)
		m=0;
    }
    else if(index==2)
    {
      s++;
	  if(s>59)
		s=0;
    }
    else if(index==3)
    {
      dd++;
	  if(dd>31)
		dd=1;
    }
    else if(index==4)
    {
      mm++;
	  if(mm>12)
		mm=1;
    }
    else if(index==5)
    {
      yy++;
    }
   ulozCas();
  }
  else if(reading2==0 && !btn2)
    btn2=true;


  lcd.setCursor(0,0);
  lcd.print(h);
  lcd.print(":");
  lcd.print(m);
  lcd.print(":");
  lcd.print(s);
  lcd.setCursor(0,1); //nastav na durhy riadok
  lcd.print(dd);
  lcd.print("-");
  lcd.print(mm);
  lcd.print("-");
  lcd.print(yy);
  /*Serial.println("------");
  Serial.print(h);
  Serial.print(":");
  Serial.print(m);
  Serial.print(":");
  Serial.print(s);
  Serial.print("---");
  Serial.print(dd);
  Serial.print("-");
  Serial.print(mm);
  Serial.print("-");
  Serial.print(yy);
  Serial.print("-");
  Serial.println();*/
  delay(300);
}

void ulozCas(){

  rtc.setTime(h, m, s);     // nastav cas do rtc modulu
  rtc.setDate(dd, mm, yy);  //nastav datum do rtc modulu
}
int prevodMesiacNaCislo(String mesiac)
{
  if(mesiac == "January")
    return 1;
  else if(mesiac == "February")
    return 2;
  else if(mesiac == "March")
    return 3;
  else if(mesiac == "April")
    return 4;
  else if(mesiac == "May")
    return 5;
  else if(mesiac == "June")
    return 6;
  else if(mesiac == "July")
    return 7;
  else if(mesiac == "August")
    return 8;
  else if(mesiac == "September")
    return 9;
  else if(mesiac == "October")
    return 10;
  else if(mesiac == "November")
    return 11;
  else if(mesiac == "December")
    return 12;
}