use crate::game;
use crate::player;

pub struct Engine {
    players: Vec<player::PlayerConsole>,
    turn: usize,
    board: game::Board,
}

impl Engine {
    pub fn new() -> Engine {
        let p1 = player::PlayerConsole::new("P1", game::CELL_X);
        let p2 = player::PlayerConsole::new("P2", game::CELL_O);

        let board = game::Board::new();

        Engine {
            players: vec![p1, p2],
            turn: 0,
            board: board,
        }
    }

    pub fn run(&mut self) -> Result<(), Box<dyn std::error::Error>> {
        loop {
            let m = self.players[self.turn].request_move(&self.board)?;

            let ok = self.board.put(m);
            if !ok {
                continue;
            }

            let winner = self.board.has_winner();
            if winner != game::CELL_EMPTY {
                println!("the winner is {}", self.players[self.turn].name());
                break;
            }

            self.turn = (self.turn + 1) % 2
        }

        Ok(())
    }
}