function getUserChoice(userInput) {
  userInput = userInput.toLowerCase();
  if (userInput === 'bear' || userInput === 'human' || userInput === 'gun') {
    return userInput;
  } else {
    return 'Please enter valid option';
  }
}

function getComputerChoice() {
  var randomNumber = Math.floor(Math.random() * 3);
  if (randomNumber === 0) {
    return 'bear'
  } else if (randomNumber === 1) {
    return 'human';
  } else {
    return 'gun';
  }

}

function determineWinner(userChoice, computerChoice) {
  if (userChoice === computerChoice) {
    return 'you\'re neither a loser nor a winner';
  }

  if (userChoice === 'human') {
    if (computerChoice === 'bear') {
      return 'you suck';
    } else {
      return 'you\'re sub par I guess ¯\_(ツ)_/¯';
    }
  }
  if (userChoice === 'bear') {
    if (computerChoice === 'gun') {
      return 'you suck';
    } else {
      return 'you\'re sub par I guess ¯\_(ツ)_/¯';
    }
  }

  if (userChoice === 'gun') {
    if (computerChoice === 'human') {
      return 'you suck';
    } else {
      return 'you\'re sub par I guess ¯\_(ツ)_/¯';
    }
  }
}

function playGame() {
  var promptUserChoice = prompt('Please chose bear, human, or gun');
  var userChoice = getUserChoice(promptUserChoice);
  var computerChoice = getComputerChoice();
  console.log(userChoice);
  console.log(computerChoice);
  console.log(determineWinner(userChoice, computerChoice));
}
playGame();