/*
To do: 
* Add buzzer functions
* Abstract more if possible
*/

// Set pin 6 as pin controlling LED
const int ledPin = 6;
const int buzzPin = 5;
const int dot = 60;
const int dash = 3*dot;
const int freq = 262;
int onTime;
int offTime = dot;
String letter;

// Lists all characters in alphabet and again in Morse code
const String characters = String("ABCDEFGHIJKLMNOPQRSTUVWXYZ,.");

const String codes[28] = {
  ".-",
  "-...",
  "-.-.",
  "-..",
  ".",
  "..-.",
  "--.",
  "....",
  "..",
  ".---",
  "-.-",
  ".-..",
  "--",
  "-.",
  "---",
  ".--.",
  "--.-",
  ".-.",
  "...",
  "-",
  "..-",
  "...-",
  ".--",
  "-..-",
  "-.--",
  "--..",
  "--..--",
  ".-.-.-"
};

// these arrays hold the indices of the letters in each word
int helloSequence[] = {7, 4, 11, 11, 14};
int worldSequence[] = {22, 14, 17, 11, 3};




void flashbuzz(int ledPin, int onTime) {
  /*
  Turns the LED on, waits for onTime,
  then turns off for offTime
  */


  digitalWrite(ledPin, HIGH);
  tone(buzzPin, freq);
  delay(onTime);
  digitalWrite(ledPin, LOW);
  noTone(buzzPin);
  delay(offTime);
}

String findLetter(int index){
	String letter;
	letter = codes[index];
	return letter;
}

int dotordash(char input){
  
  // Determines if onTime should be a dot or dash length
  int onTime;

  if(input == "."){
 
   onTime = dot;
  }
  else if(input == "-"){
    onTime = dash;
  }
  return onTime;
}


void setup() {
  // LED pin is output
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
}


void loop() {
	
	for(int i = 0; i< sizeof(helloSequence)/sizeof(helloSequence[0]);i++){
		letter = findLetter(helloSequence[i]);
    Serial.println(letter);
		for(int j = 0; j< sizeof(letter)/sizeof(letter[0]);j++){
			onTime = dotordash(letter[j]);
			flashbuzz(ledPin, onTime);
			delay(offTime);
			}
	
	}
	
	delay(7*offTime);
	
		for(int i = 0; i< sizeof(worldSequence)/sizeof(worldSequence[0]);i++){
		letter = findLetter(worldSequence[i]);
    Serial.println(letter);
		for(int j = 0; j< sizeof(letter)/sizeof(letter[0]);j++){
			onTime = dotordash((letter[j]));
			flashbuzz(ledPin, onTime);
			delay(offTime);
			}
	
	}
	

  delay(2000);
}