rps.js

//function to get the user's choice
const getUserChoice = userInput => {
  userInput = 
  userInput.toLowerCase();
  //if stmt to make sure input is valid
  if (userInput === 'rock' || 'scissors' || 'paper') {
    return userInput;
  } else {
    	console.log('Invalid selection'); 
    }//end else
}//end getUserChoice function


//function to get computer choice
const getComputerChoice = () => {
  Math.floor(Math.random() * 3);
  //switch case to verify & return result
  switch (getComputerChoice) {
    case 0:
      return 'rock';
      break;
    case 1:
      return 'paper';
      break;
    case 2:
      return 'scissors';
      break;
    default: 
  		console.log ('Invalid');
    break;
  }//end switch 
}//end getComputerChoice

//function to determine the winner
const determineWinner = (userChoice, computerChoice) => {
  if (userChoice === computerChoice) {
    return 'The game is a tie';
  } 
  
  
  if (userChoice === 'rock') { 
 			if (computerChoice === 'paper')
        {return 'You Won!';}     
  	} // end userchoice is rock
  
  
  
	if (userChoice === 'paper') {
  	if (computerChoice === 'scissors') {
    	return 'The computer won!';
  } else {
    return 'You won!';
  }  
  	} // end userchoice is paper
  
 
  if (userChoice === 'scissors') {
  	if (computerChoice === 'rock') {
    	return 'The computer won!';
  } else {
    	return 'You won!';
  }        
  	} //end userchoice is scissors
    
}//end winner function


//function to play the game
const playGame = () => {
    const userChoice = getUserChoice('rock');
    const computerChoice = getComputerChoice();
  	console.log('You threw: ' + userChoice);
    console.log('The computer threw: ' + computerChoice);  

  //call funtion to determine winner
console.log(determineWinner(userChoice,computerChoice));
  }//end playGame


//function calls
playGame();