#[derive(Copy, Clone, PartialEq, Eq, Debug)]
pub enum Piece {
    Black,
    White,
}

impl Piece {
    pub const fn flip(&self) -> Self {
        match self {
            Piece::Black => Piece::White,
            Piece::White => Piece::Black,
        }
    }

    pub const fn symbol(&self) -> &'static str {
        match self {
            Piece::White => "■",
            Piece::Black => "□",
        }
    }

    pub const fn text(&self) -> &'static str {
        match self {
            Piece::Black => "Black",
            Piece::White => "White",
        }
    }
}

impl std::ops::Not for Piece {
    type Output = Piece;

    fn not(self) -> Self::Output {
        self.flip()
    }
}