const int BUTTON_PIN =2;
const int RED_LIGHT_PIN =11;
const int YELLOW_LIGHT_PIN =10;
const int GREEN_LIGHT_PIN =9;
const int GREEN_PED_LIGHT_PIN =8;
const int RED_PED_LIGHT_PIN =7;
int TIME_FLASHING=0;
const int CAR_SLOW_DOWN_DELAY=3000;
const int PED_CROSSING_DELAY=10000;
const int FLASHING_LIGHT_DELAY=500;
const unsigned long NEXT_BUTTON_PRESS_DELAY=(60000);
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(BUTTON_PIN, INPUT_PULLUP);
pinMode(RED_LIGHT_PIN, OUTPUT);
pinMode(YELLOW_LIGHT_PIN, OUTPUT);
pinMode(GREEN_LIGHT_PIN, OUTPUT);
pinMode(GREEN_PED_LIGHT_PIN, OUTPUT);
pinMode(RED_PED_LIGHT_PIN, OUTPUT);

}
int lastState = HIGH;
void loop() {
  // put your main code here, to run repeatedly:
int value = digitalRead((BUTTON_PIN));
  if (lastState != value) {
    lastState = value;
    if (value == LOW) {
      SLOWDOWN_LIGHT_STATE();
      PED_CROSSING_STATE();
      while (TIME_FLASHING<5) {
        FLASHING_LIGHTS_HURRY_STAGE();
      }
      if (TIME_FLASHING>4){
          DELAY_60_SECONDS();
      }
    }
      
  }
  else {
     DEFAULT_LIGHT_STATE();
   }
}

void DEFAULT_LIGHT_STATE() {
      digitalWrite(GREEN_LIGHT_PIN, HIGH);
      digitalWrite(RED_PED_LIGHT_PIN, HIGH);
}

void SLOWDOWN_LIGHT_STATE(){
  digitalWrite(GREEN_LIGHT_PIN, LOW);
  digitalWrite(YELLOW_LIGHT_PIN, HIGH);
  delay(CAR_SLOW_DOWN_DELAY);
}

void PED_CROSSING_STATE(){
  digitalWrite(YELLOW_LIGHT_PIN, LOW);
  digitalWrite(RED_LIGHT_PIN, HIGH);
  digitalWrite(GREEN_PED_LIGHT_PIN, HIGH);
  digitalWrite(RED_PED_LIGHT_PIN, LOW);
  delay(PED_CROSSING_DELAY);
  digitalWrite(RED_LIGHT_PIN, LOW);
  digitalWrite(GREEN_PED_LIGHT_PIN, LOW);
}
void FLASHING_LIGHTS_HURRY_STAGE(){
  digitalWrite(YELLOW_LIGHT_PIN, LOW);
  digitalWrite(GREEN_PED_LIGHT_PIN, LOW);
  delay(FLASHING_LIGHT_DELAY);
  digitalWrite(YELLOW_LIGHT_PIN, HIGH);
  digitalWrite(GREEN_PED_LIGHT_PIN, HIGH);
  delay(FLASHING_LIGHT_DELAY);
  digitalWrite(YELLOW_LIGHT_PIN, LOW);
  digitalWrite(GREEN_PED_LIGHT_PIN, LOW);
  TIME_FLASHING= TIME_FLASHING+1;

 
}

void DELAY_60_SECONDS(){
  TIME_FLASHING=0;
  digitalWrite(GREEN_LIGHT_PIN, HIGH);
  digitalWrite(RED_PED_LIGHT_PIN, HIGH);
  delay(NEXT_BUTTON_PRESS_DELAY);
}