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use std::{f32::INFINITY, time::{Duration, Instant}};

use chessnost::board::Board;

fn main() {
    let increment = Duration::from_secs(0);
    let mut time_left = Duration::from_secs(60 * 10);
    let manual_decrement = Duration::from_secs(7); // Time to sync moves with the game

    let mut board = Board::new();

    board.print();

    loop {
        time_left += increment;
        time_left -= manual_decrement;

        let mov = match board.read_move() {
            Ok(m) => m,
            Err(e) => {
                println!("Error: {}", e);
                continue;
            }
        };
        print!("{:?}", mov);
        board.make_move(mov);
        board.print();

        let allowed_move_duration = time_left / 20;
        let max_depth = 6 + (board.ply as i32 / 15) as u8;
        println!("~{:?} left, allocating {:?} for a move", time_left, allowed_move_duration);

        let move_start = Instant::now();
        let (score, pv) = board.iterative_deepening(max_depth, allowed_move_duration);
        let elapsed = move_start.elapsed();

        if time_left >= elapsed {
            time_left -= elapsed;
        } else {
            println!("You are probably out of time. I will keep going anyway...");
        }

        println!("Finished in {:?}: score={:?}", elapsed, score);

        let mov = pv[0];
        println!("{:?}", mov);
        board.make_move(mov);
        board.print();
        println!("Score for {:?} is now: {}", board.color(), board.quiscence(-INFINITY, INFINITY));

        println!("\nPondering for 3 seconds...");
        board.iterative_deepening(max_depth - 1, Duration::from_secs(3));
    }
}