// Pin Definitions
int button = 12;
int segments[] = {1, 2, 3, 4, 5, 6, 7};
int displays[] = {8, 9, 10, 11};
int number1; 
int number2; 
int number3;
int wildcard;
bool buttonState;

void setup() {
  // Set pin modes
  pinMode(button, INPUT_PULLUP);
  for (int i = 0; i < 7; i++) {
    pinMode(segments[i], OUTPUT);
  }
  for (int i = 0; i < 4; i++) {
    pinMode(displays[i], OUTPUT);
  }
  randomSeed(analogRead(0));
}


void spin() {
  //  random numbers
  number1 = random(0, 9);
  number2 = random(0, 9);
  number3 = random(0, 9);
  wildcard = random(0, 9);

  // Spin
  for (int i = 0; i < 20; i++) { // i causes the spin to happen after the limit is reached then it stops 
    digitalWrite(displays[0], LOW);
    displayNum(random(1, 9));
    delay(25);

    digitalWrite(displays[1], LOW);
    displayNum(random(1, 9));
    delay(50);

    digitalWrite(displays[2], LOW);
    displayNum(random(1, 9));
    delay(75);

    digitalWrite(displays[0], HIGH);
    digitalWrite(displays[1], HIGH);
    digitalWrite(displays[2], HIGH);
    delay(1);
  }
}

void stop() {
  // Stops the spinning by displaying the last known numbers which were stored in global variables 
  digitalWrite(displays[0], LOW);
  displayNum(number1);
  delay(5);

  digitalWrite(displays[1], LOW);
  displayNum(number2);
  delay(5);

  digitalWrite(displays[2], LOW);

  if (number3 == wildcard) { // triggering the wildcard to be displayed 
    displayNum(wildcard);
  } else {
    displayNum(number3);
    digitalWrite(displays[3], LOW);
  }

  delay(1);


}

void displayNum(int number) { //  for the displays so the number knew where to go
  for (int i = 0; i < 4; i++) {
    digitalWrite(displays[i], HIGH);
  }

  switch (number) { // all the numbers case matches what is displayed 
    case 0:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], HIGH);
      digitalWrite(segments[5], HIGH);
      digitalWrite(segments[6], LOW);
      break;
    case 1:
      digitalWrite(segments[0], LOW);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], LOW);
      digitalWrite(segments[4], LOW);
      digitalWrite(segments[5], LOW);
      digitalWrite(segments[6], LOW);
      break;
    case 2:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], LOW);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], HIGH);
      digitalWrite(segments[5], LOW);
      digitalWrite(segments[6], HIGH);
      break;
    case 3:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], LOW);
      digitalWrite(segments[5], LOW);
      digitalWrite(segments[6], HIGH);
      break;
    case 4:
      digitalWrite(segments[0], LOW);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], LOW);
      digitalWrite(segments[4], LOW);
      digitalWrite(segments[5], HIGH);
      digitalWrite(segments[6], HIGH);
      break;
    case 5:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], LOW);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], LOW);
      digitalWrite(segments[5], HIGH);
      digitalWrite(segments[6], HIGH);
      break;
    case 6:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], LOW);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], HIGH);
      digitalWrite(segments[5], HIGH);
      digitalWrite(segments[6], HIGH);
      break;
    case 7:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], LOW);
      digitalWrite(segments[4], LOW);
      digitalWrite(segments[5], LOW);
      digitalWrite(segments[6], LOW);
      break;
    case 8:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], HIGH);
      digitalWrite(segments[5], HIGH);
      digitalWrite(segments[6], HIGH);
      break;
    case 9:
      digitalWrite(segments[0], HIGH);
      digitalWrite(segments[1], HIGH);
      digitalWrite(segments[2], HIGH);
      digitalWrite(segments[3], HIGH);
      digitalWrite(segments[4], LOW);
      digitalWrite(segments[5], HIGH);
      digitalWrite(segments[6], HIGH);
      break;
  }
  }
void loop() {
  buttonState = digitalRead(button);

  if (buttonState == LOW) {
    spin(); // calling the spin function
    delay(500);
  } else {
    stop(); // display the numbers that were generated
  }

}