Flip a coin action webhook

index.js

app.handle('coin_handle', (conv) => {
  
  // create a variable to hold the response
  var response = "";
  
  // create a constant to hold what the user picked
  const userSide = conv.intent.params.coin_slot.resolved;
  response += "You picked " + userSide + ". ";
  
  // generate a random number between 0 and 1
  const randomNum = Math.floor(Math.random() * 2);
  
  // create a variable to hold what the system flipped
  var flipSide = "";
  if (randomNum == 0) {
    flipSide = "heads";
  } else {
    flipSide = "tails";
  }
  response += "I flipped " + flipSide + ". ";
  
  // compare userSide with flipSide
  if (userSide == flipSide) {
    response += "You won!!! ";
  } else {
    response += "You lose!! ";
  }
  
  // add the response to the conversation
  conv.add(response);

});