use criterion::{criterion_group, criterion_main, BenchmarkId, Criterion, Throughput};
use std::time::Duration;

// use crate::future_move::FutureMove;
use othello::{board::Board, future_moves::FutureMoves, piece::Piece};

fn future_move_bench(depth: usize, expire: usize) {
    let mut fut = FutureMoves::new(Piece::Black, depth, expire);
    fut.update(&Board::new().starting_pos());
    let _best_move = fut.best_move().inspect(|&(i, j)| {
        if !fut.update_root_coord(i, j) {
            panic!("update_root_coord failed");
        }
    });
}

fn criterion_benchmark(c: &mut Criterion) {
    let mut group = c.benchmark_group("future_move (expire 4)");
    group.measurement_time(Duration::from_secs(60));

    for (depth, expire) in [(2, 4), (3, 4), (4, 4), (5, 4), (6, 4)].iter() {
        group.throughput(Throughput::Elements(*depth as u64));
        group.bench_with_input(BenchmarkId::from_parameter(depth), depth, |b, depth| {
            b.iter(|| future_move_bench(*depth, *expire));
        });
    }
    group.finish();
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);