#define LED1 2
#define LED2 3
#define LED3 4
#define LED4 5
#define Button 6

bool isLED1_On=false;
bool isLED2_On=false;
bool isLED3_On=false;
bool isLED4_On=false;

long lastTurnOn = millis();
long lastPatternChange=millis();

unsigned int CurrentState = 1;
unsigned int LEDPattern=1;
bool isStateChanged=false;
bool ButtonStateLast;
bool ButtonStateActual=digitalRead(Button);


void LED1_TurnOn() {
  digitalWrite(LED1, HIGH);
  isLED1_On=true;
  Serial.println("LED1 turned on!");
}

void LED2_TurnOn() {
  digitalWrite(LED2, HIGH);
  isLED2_On=true;
  Serial.println("LED2 turned on!");
}

void LED3_TurnOn() {
  digitalWrite(LED3, HIGH);
  isLED3_On=true;
  Serial.println("LED3 turned on!");
}

void LED4_TurnOn() {
  digitalWrite(LED4, HIGH);
  isLED4_On=true;
  Serial.println("LED4 turned on!");
}

void LED1_TurnOff(){
  digitalWrite(LED1, LOW);
  isLED1_On=false;
  Serial.println("LED1 turned off!");
}

void LED2_TurnOff(){
  digitalWrite(LED2, LOW);
  isLED2_On=false;
  Serial.println("LED2 turned off!");
}

void LED3_TurnOff(){
  digitalWrite(LED3, LOW);
  isLED3_On=false;
  Serial.println("LED3 turned off!");
}

void LED4_TurnOff(){
  digitalWrite(LED4, LOW);
  isLED4_On=false;
  Serial.println("LED4 turned off!");
}

void setup() {
  // put your setup code here, to run once:
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
  pinMode(Button, INPUT_PULLUP);
  Serial.begin(115200); // Any baud rate should work
  Serial.println("Start\n");
  ButtonStateLast=digitalRead(Button);
 
}

void loop() {
  // put your main code here, to run repeatedly:


  switch (CurrentState){
    case 1:
      LED1_TurnOn();
      LED2_TurnOn();
      LED3_TurnOn();
      LED4_TurnOn();

      if (isStateChanged){
        CurrentState=2;
        isStateChanged = false;
        LEDPattern=1;}
      break;

    case 2:
      
      if (lastPatternChange<=(millis()-200)){
        LEDPattern++;
        lastPatternChange=millis();
        if (LEDPattern > 8){
          LEDPattern=1;}
      }

      switch (LEDPattern){
        case 1:
          LED1_TurnOff();
          LED2_TurnOff();
          LED3_TurnOff();
          LED4_TurnOff();
          break;
        case 2:
          LED1_TurnOff();
          LED2_TurnOff();
          LED3_TurnOff();
          LED4_TurnOn();
          break;
        case 3:
          LED1_TurnOff();
          LED2_TurnOff();
          LED3_TurnOn();
          LED4_TurnOn();
          break;
        case 4:
          LED1_TurnOff();
          LED2_TurnOn();
          LED3_TurnOn();
          LED4_TurnOn();
          break;
        case 5:
          LED1_TurnOn();
          LED2_TurnOn();
          LED3_TurnOn();
          LED4_TurnOn();
          break;
        case 6:
          LED1_TurnOn();
          LED2_TurnOn();
          LED3_TurnOn();
          LED4_TurnOff();
          break;
        case 7:
          LED1_TurnOn();
          LED2_TurnOn();
          LED3_TurnOff();
          LED4_TurnOff();
          break;
        case 8:
          LED1_TurnOn();
          LED2_TurnOff();
          LED3_TurnOff();
          LED4_TurnOff();
          break; 
      }

      if (isStateChanged){
        CurrentState=3;
        isStateChanged = false;
        LEDPattern=1;}
      break;
  
    case 3:
      if (lastPatternChange<=(millis()-500)){
        LEDPattern++;
        lastPatternChange=millis();
        if (LEDPattern > 2){
          LEDPattern=1;}
      }
      
      switch (LEDPattern){
        case 1:
          LED1_TurnOn();
          LED2_TurnOn();
          LED3_TurnOn();
          LED4_TurnOn();
          break;
        case 2:
          LED1_TurnOff();
          LED2_TurnOff();
          LED3_TurnOff();
          LED4_TurnOff();
          break;
      }
      
      if (isStateChanged){
          CurrentState=4;
          isStateChanged = false;
          LEDPattern=1;}
      break;

    case 4:
      LED1_TurnOff();
      LED2_TurnOff();
      LED3_TurnOff();
      LED4_TurnOff();

      if (isStateChanged){
        CurrentState=1;
        isStateChanged = false;
        LEDPattern=1;}
      break;
  }

  ButtonStateActual=digitalRead(Button);
  if(ButtonStateActual != ButtonStateLast){
    // then save the state change
    ButtonStateLast = ButtonStateActual;

    // button pressed not released
    if(LOW == ButtonStateActual){
      // switch state
      // use ?: operand to read and toggle LED1 state
      isStateChanged = true; // toggle LedState
      delay(50); // simple debouncing
    }
  }
  
  //delay(500);

  //Serial.println("Utolsó elsütés:" + String(lastTurnOn));
 //Serial.println(millis());
}