#include <LiquidCrystal_I2C.h>
#include <SPI.h>
#include <MFRC522.h>
#define RST_PIN         9          // Configurable, see typical pin layout above
#define SS_1_PIN        10         // Configurable, take a unused pin, only HIGH/LOW required, must be diffrent to SS 2
#define NR_OF_READERS   1
byte ssPins[] = {SS_1_PIN};
MFRC522 mfrc522[NR_OF_READERS];   // Create MFRC522 instance.
LiquidCrystal_I2C lcd(0x27, 16, 2);
unsigned long kod;
boolean run = false;
boolean run2 = false;
long timer = 0; //The timer
int second = 0;
int minute = 0;
int tenth = 0;
int hour =0;
int second2 = 0;
int minute2 = 0;
int tenth2 = 0;
int hour2 =0;
const int rfrele = 3;
const int gdprele = 4;
const int buzzer = 5;
void setup() {
  Serial.begin(9600);
  SPI.begin();
   lcd.begin();
  lcd.backlight();
  pinMode(rfrele,OUTPUT);
  pinMode(gdprele,OUTPUT);
  pinMode(buzzer,OUTPUT);
    for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
    mfrc522[reader].PCD_Init(ssPins[reader], RST_PIN); // Init each MFRC522 card
    Serial.print(F("Reader "));
    Serial.print(reader);
    Serial.print(F(": "));
    mfrc522[reader].PCD_DumpVersionToSerial();
  }

  lcd.setCursor(0,0);
  lcd.print("RF  00:00:00");
   lcd.setCursor(0,1);
   lcd.print("GD 00:00:00");
}

void tickClock() {
  if((timer - millis()/100) >= 100 || timer == 0) {
    tick();
    tick2();
    timer = millis()/100;
  }

}

void loop() {
   for (uint8_t reader = 0; reader < NR_OF_READERS; reader++) {
    if (mfrc522[reader].PICC_IsNewCardPresent() && mfrc522[reader].PICC_ReadCardSerial()) {
      Serial.print(F("Reader "));
      Serial.print(reader);
      // Show some details of the PICC (that is: the tag/card)
      Serial.print(F(": Card UID:"));
      dump_byte_array(mfrc522[reader].uid.uidByte, mfrc522[reader].uid.size);
      Serial.println();
      Serial.print(F("PICC type: "));
      MFRC522::PICC_Type piccType = mfrc522[reader].PICC_GetType(mfrc522[reader].uid.sak);
      Serial.println(mfrc522[reader].PICC_GetTypeName(piccType));

      // Halt PICC
      mfrc522[reader].PICC_HaltA();
      // Stop encryption on PCD
      mfrc522[reader].PCD_StopCrypto1();
    } //if (mfrc522[reader].PICC_IsNewC
  } //for(uint8_t reader
  if(kod==4294957290){

       digitalWrite(rfrele, HIGH);
             digitalWrite(gdprele, LOW);
      run = false;
      run2 = true;
        }else if(kod==17691){

           digitalWrite(rfrele, LOW);
             digitalWrite(gdprele, HIGH);
          run = true;
      run2 = false;
          }else if(kod==12619){

             digitalWrite(rfrele, HIGH);
             digitalWrite(gdprele, HIGH);
            run = false;
      run2 = false;
            }else if(kod==26377){

             digitalWrite(rfrele, HIGH);
             digitalWrite(gdprele, HIGH);
       second = 0;
 minute = 0;
 tenth = 0;
 hour =0;
 second2 = 0;
 minute2 = 0;
 tenth2 = 0;
 hour2 =0;
 updateLCD();
 updateLCD2();
  run = false;
      run2 = false;
              }
  tickClock(); //Start ticking the clock
}

void tick() {
  if(run) {
    updateLCD();



    if(tenth == 9) {
      tenth = 0;

      if(second == 59) {
        second = 0;
        minute++;

      }else {
        second++;
      }

      if(minute == 60) {
        minute = 0;
        hour++;

      }
    } else {
    tenth++;
    }
  }
}
void tick2() {
  if(run2) {
    updateLCD2();



    if(tenth2 == 9) {
      tenth2 = 0;

      if(second2 == 59) {
        second2 = 0;
        minute2++;

      }else {
        second2++;
      }

      if(minute2 == 60) {
        minute2 = 0;
        hour2++;

      }
    } else {
    tenth2++;
    }
  }
}
void updateLCD() {
   lcd.setCursor(4,0);
 if(hour < 10) {      // If hour does not have 2 digits
    lcd.print("0");
  }
   lcd.print(hour, DEC);
  lcd.print(":");
  if(minute < 10) {      // If hour does not have 2 digits
    lcd.print("0");
  }
  lcd.print(minute, DEC);
  lcd.print(":");

  if(second < 10) {    // If minute does not have 2 digits
    lcd.print("0");
  }
  lcd.print(second, DEC);
  //

}
void updateLCD2() {
  lcd.setCursor(4,1);
  if(hour2 < 10) {      // If hour does not have 2 digits
    lcd.print("0");
  }
   lcd.print(hour2, DEC);
  lcd.print(":");
  if(minute2 < 10) {      // If hour does not have 2 digits
    lcd.print("0");
  }
  lcd.print(minute2, DEC);
  lcd.print(":");

  if(second2 < 10) {    // If minute does not have 2 digits
    lcd.print("0");
  }
  lcd.print(second2, DEC);

}












void dump_byte_array(byte *buffer, byte bufferSize) {
  for (byte i = 0; i < bufferSize; i++) {

  }
  kod = 10000*buffer[4]+1000*buffer[3]+100*buffer[2]+10*buffer[1]+buffer[0];
    tone(buzzer, 4000, 100);
  Serial.println("Zaznamenany kod karty: ");
  Serial.println(kod);
}