#include <RTClib.h>
#include <LiquidCrystal_I2C.h>
#include <Keypad.h>
#include <Servo.h>

Servo servo1;
int PinServo1=10;

RTC_DS1307 rtc;

const uint8_t ROWS = 4;
const uint8_t COLS = 4;
char keys[ROWS][COLS] = 
{
  { '1', '2', '3', 'A' },
  { '4', '5', '6', 'B' },
  { '7', '8', '9', 'C' },
  { '*', '0', '#', 'D' }
};

uint8_t colPins[COLS] = { 5, 4, 3, 2 }; // Pins connected to C1, C2, C3, C4
uint8_t rowPins[ROWS] = { 9, 8, 7, 6 }; // Pins connected to R1, R2, R3, R4

Keypad keypad = Keypad(makeKeymap(keys), rowPins, colPins, ROWS, COLS);

LiquidCrystal_I2C lcd(0x27, 16, 2);

int PrevHH = 0;
int PrevMI = 0;
int PrevSS = 0;
boolean AlarmStatus = false;
String Mode = "CLOCK";
int AlarmH1 = 0;
int AlarmH2 = 0;
int AlarmM1 = 0;
int AlarmM2 = 0;
int AlarmH3 = 0;
int AlarmH4 = 0;
int AlarmM3 = 0;
int AlarmM4 = 0;
boolean Blinkletter = false;




void setup() {
  
  Serial.begin(9600); //Turn on serial monitor
  servo1.attach(PinServo1);
  lcd.init();
  lcd.backlight();
  lcd.begin(16, 2);                        // set the lcd dimension
  lcd.clear(); 
  rtc.begin();
  rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }


String print2digits(int number) 
{
  String f = "";
  if (number >= 0 && number < 10) 
  {
    f = "0";
  }
  f = f + String(number);
  return f;
}

void Displaytime() 
{

      lcd.setCursor(2,0);    
     DateTime now = rtc.now();
     PrevHH=now.hour();
     PrevMI=now.minute();
     PrevSS=now.second();
  lcd.print(String(print2digits(PrevHH)));
  lcd.print(':');
  lcd.print(String(print2digits(PrevMI)));
  lcd.print(':');
  lcd.print(String(print2digits(PrevSS)));
}

    
void DisplayStatus()
{   
    if (AlarmStatus)
    {
      lcd.setCursor(0,1);
      lcd.print("A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2) + "  B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
    }
    else
    {
      lcd.setCursor(0,1);
      lcd.print("A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2) + "  B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
    }  
}

void BlinkA()
{
  if(Mode=="CLOCK")
  {
   Displaytime();
  }
  if(Mode == "SET H1" )
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }
      else
      {
         lcd.print("PET FEED A  " + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }  
  }  

  if(Mode == "SET H2")
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }
      else
      {
         lcd.print("PET FEED A " + String(AlarmH1) + " :" + String(AlarmM1) + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }  
  }
 
  if(Mode == "SET M1") 
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }
      else
      {
         lcd.print("PET FEED A " + String(AlarmH1) + String(AlarmH2) + ": " + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }  
  }
 
  if(Mode == "SET M2")
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + String(AlarmM2));
         Blinkletter = !Blinkletter;
      }
      else
      {
        lcd.print("PET FEED A " + String(AlarmH1) + String(AlarmH2) + ":" + String(AlarmM1) + " ");
         Blinkletter = !Blinkletter;
      }  
  }
}

void BlinkB()
{
    if(Mode=="CLOCK")
  {
   Displaytime();
  }
  if(Mode == "SET H3" ) 
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }
      else
      {
         lcd.print("PET FEED B  " + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }  
  }  

  if(Mode == "SET H4") 
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }
      else
      {
         lcd.print("PET FEED B " + String(AlarmH3) + " :" + String(AlarmM3) + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }  
  }
 
  if(Mode == "SET M3")
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }
      else
      {
         lcd.print("PET FEED B " + String(AlarmH3) + String(AlarmH4) + ": " + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }  
  }
 
  if(Mode == "SET M4")
  {
      lcd.setCursor(0,1);
      if(Blinkletter)
      {
         lcd.print("PET FEED B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + String(AlarmM4));
         Blinkletter = !Blinkletter;
      }
      else
      {
        lcd.print("PET FEED B " + String(AlarmH3) + String(AlarmH4) + ":" + String(AlarmM3) + " ");
         Blinkletter = !Blinkletter;
      }  
  }
}


void loop() 
 {
    String PressedKey;
    Displaytime();
    char key = keypad.getKey();  
    if (key)
   {
      PressedKey = String(key);
      if ((Mode == "CLOCK") && (PressedKey == "*")) 
      {
        AlarmStatus = !AlarmStatus;
      }  

      if ((Mode == "CLOCK") && (PressedKey == "A")) 
      {
        Mode = "SET H1";
      }
      if ((Mode == "CLOCK") && (PressedKey == "B")) 
      {
        Mode = "SET H3";
      }
      if ((Mode == "CLOCK") && (PressedKey == "C")) 
      {
        servo1.write(90);
      }
      


      if ((PressedKey == "#") && (Mode == "SET H1" || Mode == "SET H2" || Mode == "SET M1" || Mode == "SET M2")) 
      {
        Mode = "CLOCK";           
        DisplayStatus();
        goto EnA;
      }  
      if (Mode == "SET H1")
      {
        if ((PressedKey == "0" || PressedKey == "1" || PressedKey == "2"))
        {
           AlarmH1 = PressedKey.toInt();
           Mode = "SET H2";
           goto EnA;
        }
      }
      if (Mode == "SET H2")
      {
        if (((AlarmH1 * 10) + PressedKey.toInt()) < 24)
        {
           AlarmH2 = PressedKey.toInt();
           Mode = "SET M1";
           goto EnA;
        }
      }
      if (Mode == "SET M1")
      {
        if (PressedKey == "0" || PressedKey == "1" || PressedKey == "2" || PressedKey == "3" || PressedKey == "4" || PressedKey == "5")
        {
           AlarmM1 = PressedKey.toInt();
           Mode = "SET M2";
           goto EnA;
        }
      }
      if (Mode == "SET M2")
      {
        if (((AlarmM1 * 10) + PressedKey.toInt()) < 60)
        {
           AlarmM2 = PressedKey.toInt();
           Mode = "SET H1";
           goto EnA;
        }
      }
 

      if ((PressedKey == "#") && (Mode == "SET H3" || Mode == "SET H4" || Mode == "SET M3" || Mode == "SET M4")) 
      {
        Mode = "CLOCK";
        DisplayStatus();
        goto EnB;
      }  
      if (Mode == "SET H3")
      {
        if ((PressedKey == "0" || PressedKey == "1" || PressedKey == "2"))
        {
           AlarmH3 = PressedKey.toInt();
           Mode = "SET H4";
          goto EnB;
        }
      }
      if (Mode == "SET H4")
      {
        if (((AlarmH3 * 10) + PressedKey.toInt()) < 24)
        {
           AlarmH4 = PressedKey.toInt();
           Mode = "SET M3";
          goto EnB;
        }
      }
      if (Mode == "SET M3")
      {
        if (PressedKey == "0" || PressedKey == "1" || PressedKey == "2" || PressedKey == "3" || PressedKey == "4" || PressedKey == "5")
        {
           AlarmM3 = PressedKey.toInt();
           Mode = "SET M4";
          goto EnB;
        }
      }
      if (Mode == "SET M4")
      {
        if (((AlarmM3 * 10) + PressedKey.toInt()) < 60)
        {
           AlarmM4 = PressedKey.toInt();
           Mode = "SET H3";
          goto EnB;
        }
      }
    }

EnA:
{
          if (AlarmStatus)
      {
      lcd.setCursor(11,0);
      lcd.print("ON ");
      }
      else
      {
      lcd.setCursor(11,0);
      lcd.print("OFF");

      }  
    BlinkA();
    AlarmTrigger();
}
EnB:
{
          if (AlarmStatus)
      {
      lcd.setCursor(11,0);
      lcd.print("ON ");
      }
      else
      {
      lcd.setCursor(11,0);
      lcd.print("OFF");

      }  
    BlinkB();
    AlarmTrigger();
}

}







void AlarmTrigger()
{ 
  if (AlarmStatus)
  {
     if ((((AlarmH1 * 10) + AlarmH2) == PrevHH && (((AlarmM1 * 10) + AlarmM2) == PrevMI)))
     {
        if (PrevSS >= 0 && PrevSS < 1)
        {
         servo1.write(0);
        }
     }
     if ((((AlarmH3 * 10) + AlarmH4) == PrevHH) && (((AlarmM3 * 10) + AlarmM4) == PrevMI))
     {
        if (PrevSS >= 0 && PrevSS < 1)
        {
         servo1.write(180);
        }
     }  
}
}