//DECLARATION
int ledDigiRed = 8;
int buttonPin = 12;
int leda = 2;
int ledb = 3;
int ledc = 4;
int ledd = 5;
int lede = 6;

int buttonState = 0;
int lastButtonState = LOW;
int ledState = LOW;
int p = 0;


void setup() {
  // pin all components at once
  pinMode(ledDigiRed, OUTPUT);
  pinMode(leda, OUTPUT);
  pinMode(ledb, OUTPUT);
  pinMode(ledc, OUTPUT);
  pinMode(ledd, OUTPUT);
  pinMode(lede, OUTPUT);
  pinMode(buttonPin, INPUT);

}

void loop() {

  //get the button curretn state
  buttonState = digitalRead(buttonPin);
  //Exercice 2
  // a et b
  
  // Read the button state (HIGH or LOW)

  if (buttonState == 1) {
    digitalWrite(ledDigiRed, HIGH); 
    delay(500);
  } else {
    digitalWrite(ledDigiRed, LOW);
  }
  

  // c

  if (buttonState != lastButtonState) {
    lastButtonState = buttonState;
    if (buttonState == LOW) {
      ledState = (ledState == HIGH) ? LOW: HIGH;
      digitalWrite(ledDigiRed, ledState);
    }
  }
  delay(100);

  // d

  if (buttonState == HIGH) {
    // increment the P value 
    p++;
    delay(500);
  }

  //check for p value.. not sure if i can use switch to reduce the code,
  //but its work for if, anywhere !
  if(p==1){
    digitalWrite(leda, HIGH);
    digitalWrite(ledb, LOW);
    digitalWrite(ledc, LOW);
    digitalWrite(ledd, LOW);
    digitalWrite(lede, LOW);
    p=1;
  delay(50);
  }
  if(p==2){
    digitalWrite(leda, HIGH);
    digitalWrite(ledb, HIGH);
    digitalWrite(ledc, LOW);
    digitalWrite(ledd, LOW);
    digitalWrite(lede, LOW);
  delay(50);
  }
  if(p==3){
    digitalWrite(leda, HIGH);
    digitalWrite(ledb, HIGH);
    digitalWrite(ledc, HIGH);
    digitalWrite(ledd, LOW);
    digitalWrite(lede, LOW);
  delay(50);
  }
  if(p==4){
    digitalWrite(leda, HIGH);
    digitalWrite(ledb, HIGH);
    digitalWrite(ledc, HIGH);
    digitalWrite(ledd, HIGH);
    digitalWrite(lede, LOW);
  delay(50);
  }
  if(p==5){
    digitalWrite(leda, HIGH);
    digitalWrite(ledb, HIGH);
    digitalWrite(ledc, HIGH);
    digitalWrite(ledd, HIGH);
    digitalWrite(lede, HIGH);
  delay(50);
  }
  if(p==6){
    digitalWrite(leda, LOW);
    digitalWrite(ledb, LOW);
    digitalWrite(ledc, LOW);
    digitalWrite(ledd, LOW);
    digitalWrite(lede, LOW);
  delay(50);
  p=0;
  }

}