#define Y1 3
#define W1 4
#define Y2 5
#define W2 6
#define X1 7
#define X2 8
#define Yout 9
#define SVout 10
#define EP 11
#define VO 12
#define HB 13
#define Winh 14

int page;
int paragraph;
int sentence;
int verb;
int noun;

int priority;
int valve;
int inhibit;


void setup() {
  pinMode(Y1, INPUT_PULLUP);
  pinMode(W1, INPUT_PULLUP);
  pinMode(Y2, INPUT_PULLUP);
  pinMode(W2, INPUT_PULLUP);
  pinMode(EP, INPUT_PULLUP);
  pinMode(VO, INPUT_PULLUP);
  pinMode(Winh, INPUT_PULLUP);

  pinMode(X1, OUTPUT);
  pinMode(X2, OUTPUT);
  pinMode(Yout, OUTPUT);
  pinMode(SVout, OUTPUT);
  pinMode(HB, OUTPUT);

  digitalWrite(HB, HIGH);
  digitalWrite(X1, LOW);
  digitalWrite(X2, LOW);
  digitalWrite(Yout, LOW);
  digitalWrite(SVout, LOW);
  delay(1000);
  digitalWrite(HB, LOW);

  Serial.begin(9600);

  inputs();

}

void loop() {
  inputs();

  while(priority == 1) {
    inputs();
    if(digitalRead(Y1) == LOW) {
      digitalWrite(Yout, HIGH);
      if(inhibit == 2) {
        digitalWrite(X2, HIGH);
        digitalWrite(X1, LOW);
      }
      else if(inhibit == 1) {
        digitalWrite(X2, LOW);
        digitalWrite(X1, LOW);
      }
      delay(2000);
      if(valve == priority) {
        digitalWrite(SVout, HIGH);
      }
      else if(valve != priority) {
        digitalWrite(SVout, LOW);
      }
    }
    else if(digitalRead(Y1) == HIGH) {
      if(digitalRead(Y2) == LOW) {
        digitalWrite(Yout, HIGH);
        if(inhibit == 2) {
          digitalWrite(X2, LOW);
          digitalWrite(X1, HIGH);
        }
        else if(inhibit == 1) {
          digitalWrite(X2, LOW);
          digitalWrite(X1, LOW);
        }
        delay(2000);
        if(valve == priority) {
          digitalWrite(SVout, LOW);
        }
        else if(valve != priority) {
          digitalWrite(SVout, HIGH);
        }
      }
      else if(digitalRead(Y2) == HIGH) {
        digitalWrite(Yout, LOW);
        digitalWrite(SVout, LOW);
        digitalWrite(X1, LOW);
        digitalWrite(X2, LOW);
      }
    }
  }

  while(priority == 2) {
    inputs();
    if(digitalRead(Y2) == LOW) {
      digitalWrite(Yout, HIGH);
      if(inhibit == 2) {
        digitalWrite(X2, LOW);
        digitalWrite(X1, HIGH);
      }
      else if(inhibit == 1) {
        digitalWrite(X2, LOW);
        digitalWrite(X1, LOW);
      }
      delay(2000);
      if(valve == priority) {
        digitalWrite(SVout, HIGH);
      }
      else if(valve != priority) {
        digitalWrite(SVout, LOW);
      }
    }
    else if(digitalRead(Y2) == HIGH) {
      if(digitalRead(Y1) == LOW) {
        digitalWrite(Yout, HIGH);
        if(inhibit == 2) {
          digitalWrite(X2, HIGH);
          digitalWrite(X1, LOW);
        }
        else if(inhibit == 1) {
          digitalWrite(X2, LOW);
          digitalWrite(X1, LOW);
        }
        delay(2000);
        if(valve == priority) {
          digitalWrite(SVout, LOW);
        }
        else if(valve != priority) {
          digitalWrite(SVout, HIGH);
        }
      }
      else if(digitalRead(Y1) == HIGH) {
        digitalWrite(Yout, LOW);
        digitalWrite(SVout, LOW);
        digitalWrite(X1, LOW);
        digitalWrite(X2, LOW);
      }
    }
  }

}

void inputs() {
  if(digitalRead(EP) == HIGH) {
    priority = 1;
    if(digitalRead(VO) == HIGH) {
      valve = 1;
    }
    else if(digitalRead(VO) == LOW) {
      valve = 2;
    }
  }
  else if(digitalRead(EP) == LOW) {
    priority = 2;
    if(digitalRead(VO) == HIGH) {
      valve = 2;
    }
    else if(digitalRead(VO) == LOW) {
      valve = 1;
    }
  }

  if(digitalRead(Winh) == HIGH) {
    inhibit = 1;
  }
  else if(digitalRead(Winh) == LOW) {
    inhibit = 2;
  }

}