// set pin numbers
const int HRrelay = 34;  // the pin on which to read the Heater Relay State
const int HRSolOnOff = 22;    // the output pin to activate temp + button
const int HRSolOnOff2 = 26;  // the output pin to activate temp + button

// variables for storing the relay status 

int HRRelayState = 0;
bool PrevEnergized = false;

void setup() {
  Serial.begin(115200);
  Serial.println("Welcome to Mash/Ferment Heater Control by Bill Niester");
  pinMode(HRrelay, INPUT); // init HRrelay pin as Input to read state of heater relay
  pinMode(HRSolOnOff, OUTPUT); // init HRSolOnOff pin as output to provide + button activation
  pinMode(HRSolOnOff2, OUTPUT); // init HRSolOnOff pin as output to provide + button activation
  digitalWrite(HRSolOnOff, LOW); // make sure that we are not activating the capaitive switch at start
}

void loop() {
  // read the state of the PID controller relay's Heating and Cooling state (high or low)
  // Achived throhgh pulldown of 10K resistor

  HRRelayState = digitalRead(HRrelay);
  Serial.println("INIT Value for HRRelayState = ");
  Serial.println(HRRelayState);
  Serial.println("Value of PrevEnergized = ");
  Serial.println(PrevEnergized);
  delay(2500);

// HEATING SECTION

  // check if the heater relay is active (energized).
  // If it is, the RelayState is HIGH and the temperature of the wash needs to increase
  // so write to HRSolOnOff to press + button on induction heater
  if (HRRelayState == HIGH) {

   Serial.println("HRRelayState = ");
   Serial.println(HRRelayState);
  //  delay(3000);

   if (PrevEnergized == false) {
    Serial.println("PrevEnergized: FALSE ");
    Serial.println("CYCLING ON/OFF ... FLASH 50% DUTY CYCLE");
    for (int i = 0; i <= 5; i++) {
      Serial.println("Cycling ON/OFF....");
      digitalWrite(HRSolOnOff, HIGH);
      delay(300);
      digitalWrite(HRSolOnOff, LOW);
      delay(150);
    }

    // delay(1000);
    // digitalWrite(HRSolOnOff2, HIGH);
    // delay(1000);
    // digitalWrite(HRSolOnOff2, LOW);
    // delay(1000);

    for (int i = 0; i <= 5; i++) {
      Serial.println("Cycling PWR @ 40% duty cycle....");
      digitalWrite(HRSolOnOff2, HIGH);
      delay(200);
      digitalWrite(HRSolOnOff2, LOW);
      delay(800);
    }

    HRRelayState = digitalRead(HRrelay);
    PrevEnergized = true;
    Serial.println("PrevEnergized: set TRUE ");
    delay(2000);

   }

  }
  else if (HRRelayState == LOW) {

   Serial.println("HRRelayState = ");
   Serial.println(HRRelayState);

    if (PrevEnergized == true) {

    Serial.println("PrevEnergized: TRUE ");
    Serial.println("TURNING OFF ... FLASH 37.5% DUTY CYCLE");

      for (int i = 0; i <= 5; i++) {
        digitalWrite(HRSolOnOff2, HIGH);
        delay(150);
        digitalWrite(HRSolOnOff2, LOW);
        delay(400);
      }

      delay(2000);

      // for (int i = 0; i <= 5; i++) {
      //   digitalWrite(HRSolEnergize, HIGH);
      //   delay(150);
      //   digitalWrite(HRSolEnergize, LOW);
      //   delay(400);
      // }


      // digitalWrite(HRSolOnOff, HIGH);
  
      HRRelayState = digitalRead(HRrelay);
      PrevEnergized = false;
      Serial.println("PrevEnergized: set FALSE ");
    delay(2000);

    }
  }
  
}