int Butt = 2;
int LED = 13;
int Buzz = 8;
int buttonState = 0;     // current state of the button
int lastButtonState = 0; // previous state of the button
int startPressed = 0;    // the moment the button was pressed
int endPressed = 0;      // the moment the button was released
int holdTime = 0;        // how long the button was held
int startBreakTime = 0;        // how long the button was hold
int breakTime = 0;
int time=50;
String toDecode = "";

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(Butt, INPUT);
  pinMode(LED, OUTPUT);
  pinMode(Buzz, OUTPUT);
}

int morseDecode(String x){
  String morse[] = {".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....",
                            "..", ".---", "-.-", ".-..", "--", "-.", "---", ".--.", "--.-",
                            ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--.."
                            };
  for (int i=0; i<26 ;i++){
    if (x == morse[i]){
      return i;
    }
  }

}


void loop() {
  buttonState=digitalRead(Butt);
  breakTime++;
  if(breakTime>time/5 && toDecode!=""){                                  
      Serial.println(morseDecode(toDecode));
      Serial.println(toDecode);
      toDecode = "";
    }
  if (buttonState && !lastButtonState){        //if the button is pressed
    breakTime=0;                                        //reset breakTime
    digitalWrite(LED,HIGH);                             //LED on 
    lastButtonState=digitalRead(Butt);                  //change the last state of the Button to the current state
    startPressed=millis();                              //save start time
    digitalWrite(Buzz,HIGH);                            //Buzzer is on
  }
  if(!buttonState && lastButtonState ){           //if the button is released
    breakTime=0;                                         //reset breakTime
    digitalWrite(LED,LOW);                              //LED off
    lastButtonState=digitalRead(Butt);                  //change the last state of the Button to the current state
    endPressed = millis();                              //save release time
    holdTime=endPressed-startPressed;                   
    digitalWrite(Buzz,LOW);                             //Buzzer off     
    if (time/2 < holdTime && holdTime < time*3){               //generates '.' and adds it to the current string
      toDecode = toDecode + ".";                        //generates '-' and adds it to the current string
    }
    else if(time*3 < holdTime && holdTime < time*20){
      toDecode = toDecode + "-";
    }
  }

  delay(50);
}