#[repr(u8)]
pub enum Play {
    Rock,
    Paper,
    Scissors,
}

impl Into<char> for Play {
    fn into(self) -> char {
        match self {
            Play::Rock => 'X',
            Play::Paper => 'Y',
            Play::Scissors => 'Z',
        }
    }
}

impl Into<i32> for Play {
    fn into(self) -> i32 {
        match self {
            Play::Rock => 1,
            Play::Paper => 2,
            Play::Scissors => 3,
        }
    }
}

pub fn translate(letter: char) -> Option<Play> {
    match letter {
        'A' => Some(Play::Rock),
        'B' => Some(Play::Paper),
        'C' => Some(Play::Scissors),
        _ => None,
    }
}

pub fn winning(play: Play) -> char {
    match play {
        Play::Rock => Play::Paper.into(),
        Play::Paper => Play::Scissors.into(),
        Play::Scissors => Play::Rock.into(),
    }
}