#include "RTClib.h"

RTC_DS1307 rtc;

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};


////////////////Task States ///////////////////////////

#define LED 0
#define PushButton  1
#define Buzzer 2
#define RTC  3
#define End 4
///////////////////////////////////////////////////////



/////////////////////////////////////General Variables////////////////
char Task = 0; 
unsigned long currentMillis = millis();  /// tick timer 

unsigned int second =0;
unsigned int x =0;

////////////////////////////////////////////////////////////

///////////////////LED Task Global veriables////////

// Variables will change:
int ledState = LOW;  // ledState used to set the LED
////////////////////////////////////////////////////


///////////////Task timer veriables/////////////////
unsigned long LED_previousMillis = 0;  // will store last time LED was updated
const long LED_Timer = 500;  // interval at which to blink (milliseconds)

unsigned long RTC_previousMillis = 0;  // will store last time LED was updated
const long RTC_Timer = 1000;  // interval at which to blink (milliseconds)
////////////////////////////////////////////////////////////

////////////Task counter ////////////////////////
unsigned  long  LED_counter =0;
///////////////////////////////////////



///////////////Function Prototypes/////////////////////
void Red_LED_Task ();
void Push_Button_Task ();
void Buzzer_Task ();
int  RTC_Task ();
////////////////////////////////////////////////////////////


void setup() {
///////////////////////////RTC
Serial.begin(115200);

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

///////////////////////////////////////////////////////
  pinMode(7, INPUT);
  pinMode(8, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(9, OUTPUT);
}

void loop() {
  
  currentMillis = millis();


  switch(Task){
    case LED :
    
     Red_LED_Task();

     Task = PushButton ;
    break;

    case PushButton:
     Push_Button_Task ();
  
    Task = Buzzer ;
    break;

    case Buzzer:
    Buzzer_Task ();
    
    Task = RTC;
    break;

  case RTC:
    second = RTC_Task ();
    
    Serial.println(second , DEC);

    if(second < 15){
     Task = LED;

    }
    else{
    Task = End;

    }
    
    break;

    

  }

  
}


void Red_LED_Task(){

if (currentMillis - LED_previousMillis >= LED_Timer) {
    // save the last time you blinked the LED
    LED_previousMillis = currentMillis; 
  if (ledState == LOW) {
      ledState = HIGH;
    } else {
      ledState = LOW;
    }
    // set the LED with the ledState of the variable:
    digitalWrite(8, ledState);
    }
  
}

void Push_Button_Task (){

if(digitalRead(7)){
   digitalWrite(9, HIGH);

}
else{
 digitalWrite(9, LOW);

}

}




void Buzzer_Task (){


tone(6, 262, 10); // Plays 262Hz tone for 0.250 seconds


}

int  RTC_Task (){

DateTime now = rtc.now();

if (currentMillis - RTC_previousMillis >= RTC_Timer) {
    // save the last time you blinked the LED
    RTC_previousMillis = currentMillis; 



  // Serial.print("Current time: ");
  // Serial.print(now.year(), DEC);
  // Serial.print('/');
  // Serial.print(now.month(), DEC);
  // Serial.print('/');
  // Serial.print(now.day(), DEC);
  // Serial.print(" (");
  // Serial.print(daysOfTheWeek[now.dayOfTheWeek()]);
  // Serial.print(") ");
  // Serial.print(now.hour(), DEC);
  // Serial.print(':');
  // Serial.print(now.minute(), DEC);
  // Serial.print(':');
  // Serial.print(now.second(), DEC);
  // Serial.println();
  // Serial.println();




}

x = now.second();

return x;

}