chess_game 0.2.0

pub mod local;
pub mod random_bot;
pub mod mate_in_one_bot;
pub mod bong_master_bot;
pub mod eval_bot;
pub mod search_bot;

use chess::*;

pub trait Player {
    fn get_move(board: Board, num_moves: usize, bot_wait_ms: u64) -> Result<ChessMove, ()>;
}

fn get_move_from_input(input: String) -> Result<ChessMove, ()> {
    let input = input.trim().to_uppercase();

    if input.len() < 4 { return Err(()); }

    let rank = match &input[1..=1] {
        "1" => Rank::First,
        "2" => Rank::Second,
        "3" => Rank::Third,
        "4" => Rank::Fourth,
        "5" => Rank::Fifth,
        "6" => Rank::Sixth,
        "7" => Rank::Seventh,
        "8" => Rank::Eighth,
        _ => return Err(())
    };
    let file = match &input[0..=0] {
        "A" => File::A,
        "B" => File::B,
        "C" => File::C,
        "D" => File::D,
        "E" => File::E,
        "F" => File::F,
        "G" => File::G,
        "H" => File::H,
        _ => return Err(())
    };

    let source = Square::make_square(rank, file);

    let rank = match &input[3..=3] {
        "1" => Rank::First,
        "2" => Rank::Second,
        "3" => Rank::Third,
        "4" => Rank::Fourth,
        "5" => Rank::Fifth,
        "6" => Rank::Sixth,
        "7" => Rank::Seventh,
        "8" => Rank::Eighth,
        _ => return Err(())
    };
    let file = match &input[2..=2] {
        "A" => File::A,
        "B" => File::B,
        "C" => File::C,
        "D" => File::D,
        "E" => File::E,
        "F" => File::F,
        "G" => File::G,
        "H" => File::H,
        _ => return Err(())
    };

    let dest = Square::make_square(rank, file);
    
    let promotion: Option<Piece>;
    if input.len() == 5 {
        promotion = match &input[4..5] {
            "Q" => Some(Piece::Queen),
            "N" => Some(Piece::Knight),
            "R" => Some(Piece::Rook),
            "B" => Some(Piece::Bishop),
            _ => return Err(())
        };
    }
    else {
        promotion = None;
    }

    Ok(ChessMove::new(
        source,
        dest,
        promotion
    ))
}