#include <LiquidCrystal.h>
#include "pitches.h"
#include "TimerOne.h"
// melodia ca lista de note
int melody[] = {
  NOTE_C4, NOTE_G3, NOTE_G3, NOTE_A3, NOTE_G3, 0, NOTE_B3, NOTE_C4
};
//introducem durata pentru fiecare nota din melodie
int noteDurations[] = {4, 8, 8, 4,4,4,4,4};


LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
volatile unsigned long x=0;
volatile unsigned long xA=0;
unsigned long cm = 0;
unsigned long pm = 0;
unsigned long interval = 1000;
char ora_min[7];
char ora_minA[7];
char show[10];
volatile unsigned int minute, secunde, ora, minuteA, oraA = 0, flagAlarma = 0;

#define PIN20 20
#define PIN21 21
#define PIN19 19

void display_time() {
  if (ora < 10 && minute < 10) {
    sprintf(ora_min, "0%d:0%d:", ora, minute);
  }

  else if (ora > 9 && minute > 9) {
    sprintf(ora_min, "%d:%d:", ora, minute);
  }

  else if (ora < 10 && minute > 9) {
    sprintf(ora_min, "0%d:%d:", ora, minute);
  }

  else if (ora > 9 && minute < 10) {
    sprintf(ora_min, "%d:0%d:", ora, minute);
  }

  if (secunde > 9) {
    sprintf(show, "%s%d", ora_min, secunde);
  } else {
    sprintf(show, "%s0%d", ora_min, secunde);
  }

  lcd.setCursor(0, 0);
  lcd.print(show);
}

void display_alarm() {
  if (oraA < 10 && minuteA < 10) {
    sprintf(ora_minA, "0%d:0%d", oraA, minuteA);
  }

  else if (oraA > 9 && minuteA > 9) {
    sprintf(ora_minA, "%d:%d", oraA, minuteA);
  }

  else if (oraA < 10 && minuteA > 9) {
    sprintf(ora_minA, "0%d:%d", oraA, minuteA);
  }

  else if (oraA > 9 && minuteA < 10) {
    sprintf(ora_minA, "%d:0%d", oraA, minuteA);
  }

  lcd.setCursor(0, 1);
  lcd.print(ora_minA);
}



void fctH()
{
  if(flagAlarma==1){
    xA+=3600;
  }else{
 x+=3600;}
}

void fctM()
{
if(flagAlarma==1){
 xA+=60;
  }else{
 x+=60;}
}

void fctA() {
  flagAlarma = 1-flagAlarma;
}

void setup()
{

  Timer1.initialize(1000000);
  Timer1.attachInterrupt(fct_exec);

  Serial.begin(9600);
  lcd.begin(16, 2);
  pinMode(PIN19, INPUT_PULLUP);
  pinMode(PIN20 , INPUT_PULLUP);
  pinMode(PIN21, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(21), fctH, RISING);
  attachInterrupt(digitalPinToInterrupt(20), fctM, RISING);
  attachInterrupt(digitalPinToInterrupt(19), fctA, RISING);
}


void fct_exec(){
  x++;
  secunde = x % 60;
  minute = (x / 60) % 60;
  ora = (x / 3600) % 24;

  minuteA = (xA / 60) % 60;
  oraA = (xA / 3600) % 24;

  display_time();
  display_alarm();
}


void loop()
{
  
  if(x==xA && x>59){
    Serial.println("Suna");
    for (int thisNote = 0; thisNote < 8; thisNote++) {
        //calculam durata de afisare a notei
        int noteDuration = 1000 / noteDurations[thisNote];
        //apelam functia de tone pentru difuzorul atasat la pinul 8 si durata specificata
        tone(6, melody[thisNote], noteDuration);
        int pauseBetweenNotes = noteDuration * 1.30;
        delay(pauseBetweenNotes);
        noTone(8);}
  }

}