#include "MicroBit.h"

MicroBit uBit;//Create an object called uBit
//defining button A
MicroBitButton buttonA(MICROBIT_PIN_BUTTON_A, MICROBIT_ID_BUTTON_A);
//defining button B
MicroBitButton buttonB(MICROBIT_PIN_BUTTON_B, MICROBIT_ID_BUTTON_B);
//defining currentData string where incoming data will be stored
ManagedString currentData;
//Defining morse patterns
ManagedString morse[26] = {"..-",     ".-...",    ".-.-.",     ".-..",     "..",     "...-.",    ".--.",     ".....",     "...",     "..---",     ".-.-",     "..-..",    ".--",    ".-.",     ".---",    "..--.",     ".--.-",     "..-.",     "....",     ".-",     "...-",     "....-",     "..--",     ".-..-",     ".-.--",    ".--.."} ;
//Defining letter
ManagedString letter[26] = {"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K" , "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"};

//A method called translate used to translate incoming pattern into a letter
void translate(){
    while(1) {
      //for loop to go through all 26 letters of alphabet
        for(int i =0; i <= 26; i++) {
          //check if the pattern in currentData matches any item in morse ManagedString
            if (currentData == morse[i]) {
              //If so display the letter in the same index of letter ManagedString as in Morse pattern ManagedString
                uBit.display.print(letter[i]);
            }
        }
    }
}

int main()
{
    // Initialise the micro:bit runtime.
    uBit.init();
    //defining pressed flag
    bool pressed;
    uBit.buttonA.setEventConfiguration(MICROBIT_BUTTON_ALL_EVENTS);

    while(1) {
       // time of loop execution
       //defining time variable
      int time = 0;
      //get current time
      uint64_t reading = system_timer_current_time();
      //if button A is pressed do the following
      while (buttonA.isPressed()){
        //call translate method
        translate();
      }
      //If microbit is receiving signal from the other microbit execute while loop
      while(uBit.io.P0.getDigitalValue()==1) {
        pressed = true;
        //Calculate time difference to find if it is a dot or a dash
        time = system_timer_current_time() - reading;
       }

       if(pressed){
         //If time is less than 250ms
           if(time < 250){
             //Display "."
             uBit.display.print(".");
             //Add "." to currentData
             currentData = currentData +".";
             uBit.sleep(time);

           }
           else
           {
             //Otherwise print "-"
             uBit.display.print("-");
             //Add "-" to currentData
             currentData = currentData +"-";
             uBit.sleep(time);
           }
        }
        //set pressed flag to false so microbit knows button is not pressed
       pressed = false;
       // Clear display
       uBit.display.clear();

    }
    release_fiber();
}