int GREEN1 = 15;
int GREEN2 = 2;
int GREEN3 = 0;
int GREEN4 = 4;

int RED5 = 16;
int RED6 = 17;
int RED7 = 5;
int RED8 = 18;

int S1 = 14;
int S2 = 27;
int S3 = 26;
int S4 = 25;

bool switch1_on = false;
bool switch2_on = false;
bool switch3_on = false;
bool switch4_on = false;

void setup() {
  pinMode(S1, INPUT);
  pinMode(S2, INPUT);
  pinMode(S3, INPUT);
  pinMode(S4, INPUT);

  pinMode(GREEN1, OUTPUT);
  pinMode(GREEN2, OUTPUT);
  pinMode(GREEN3, OUTPUT);
  pinMode(GREEN4, OUTPUT);

  pinMode(RED5, OUTPUT);
  pinMode(RED6, OUTPUT);
  pinMode(RED7, OUTPUT);
  pinMode(RED8, OUTPUT);
}

void loop() {
  if (digitalRead(S1)) {
    if (!switch1_on) {
      switch1_on = true;
      switch2_on = false;
      switch3_on = false;
      switch4_on = false;
      Switch1();
    }
  } else {
    if (switch1_on) {
      switch1_on = false;
      ResetLEDs();
    }
  }

  if (digitalRead(S2)) {
    if (!switch2_on) {
      switch1_on = false;
      switch2_on = true;
      switch3_on = false;
      switch4_on = false;
      Switch2();
    }
  } else {
    if (switch2_on) {
      switch2_on = false;
      ResetLEDs();
    }
  }

  if (digitalRead(S3)) {
    if (!switch3_on) {
      switch1_on = false;
      switch2_on = false;
      switch3_on = true;
      switch4_on = false;
      Switch3();
    }
  } else {
    if (switch3_on) {
      switch3_on = false;
      ResetLEDs();
    }
  }

  if (digitalRead(S4)) {
    if (!switch4_on) {
      switch1_on = false;
      switch2_on = false;
      switch3_on = false;
      switch4_on = true;
      Switch4();
    }
  } else {
    if (switch4_on) {
      switch4_on = false;
      ResetLEDs();
    }
  }
  
  // If none of the switches are on, reset LEDs
  if (!switch1_on && !switch2_on && !switch3_on && !switch4_on) {
    ResetLEDs();
  }
}

void Switch1() {
  while (switch1_on) {
    LED(0,0,0,1,1,0,0,0, 300);
    LED(0,0,1,0,0,1,0,0, 300);
    LED(0,1,0,0,0,0,1,0, 300);
    LED(1,0,0,0,0,0,0,1, 300);
    if (!digitalRead(S1)) break; // Break out of loop if switch1 is no longer pressed
  }
}

void Switch2() {
  while (switch2_on) {
    LED(1,0,0,0,0,0,0,1, 300);
    LED(0,0,1,0,0,1,0,0, 300);
    LED(0,0,0,1,1,0,0,0, 300);
    LED(0,0,1,0,0,1,0,0, 300);
    LED(0,1,0,0,0,0,1,0, 300);
    LED(1,0,0,0,0,0,0,1, 300);
    if (!digitalRead(S2)) break; // Break out of loop if switch2 is no longer pressed
  }
}

void Switch3() {
  while (switch3_on) {
    LED(1,0,0,0,0,0,0,0, 300);
    LED(0,1,0,0,0,0,0,0, 300);
    LED(0,0,1,0,0,0,0,0, 300);
    LED(0,0,0,1,0,0,0,0, 300);
    LED(0,0,0,0,1,0,0,0, 300);
    LED(0,0,0,0,0,1,0,0, 300);
    LED(0,0,0,0,0,0,1,0, 300);
    LED(0,0,0,0,0,0,0,1, 300);
    LED(0,0,0,0,0,0,1,0, 300);
    LED(0,0,0,0,0,1,0,0, 300);
    LED(0,0,0,0,1,0,0,0, 300);
    LED(0,0,0,1,0,0,0,0, 300);
    LED(0,0,1,0,0,0,0,0, 300);
    LED(0,1,0,0,0,0,0,0, 300);
    LED(1,0,0,0,0,0,0,0, 300);
    if (!digitalRead(S3)) break; // Break out of loop if switch3 is no longer pressed
  }
}

void Switch4() {
  while (switch4_on) {
    LED(1,0,1,0,1,0,1,0, 300);
    LED(0,1,0,1,0,1,0,1, 300);
    if (!digitalRead(S4)) break; // Break out of loop if switch4 is no longer pressed
  }
}

void LED(int a, int b, int c, int d, int e, int f, int g, int h, int t) {
  digitalWrite(GREEN1, a);
  digitalWrite(GREEN2, b);
  digitalWrite(GREEN3, c);
  digitalWrite(GREEN4, d);
  digitalWrite(RED5, e);
  digitalWrite(RED6, f);
  digitalWrite(RED7, g);
  digitalWrite(RED8, h);
  delay(t);
}

void ResetLEDs() {
  digitalWrite(GREEN1, LOW);
  digitalWrite(GREEN2, LOW);
  digitalWrite(GREEN3, LOW);
  digitalWrite(GREEN4, LOW);
  digitalWrite(RED5, LOW);
  digitalWrite(RED6, LOW);
  digitalWrite(RED7, LOW);
  digitalWrite(RED8, LOW);
}