use std::io::prelude::*;
use std::io::stdin;
use std::path::Path;

use time::{Duration, PreciseTime};

use steam_powered_wyrm::command::{Action, Command};
use steam_powered_wyrm::game;
use steam_powered_wyrm::json;
use steam_powered_wyrm::strategy::{choose_move, ScoreConfig};

fn main() {
    let max_time = Duration::milliseconds(900);
    let config = ScoreConfig::default();

    let mut game_board = None;
    for line in stdin().lock().lines() {
        let start_time = PreciseTime::now();

        let round_number = line.expect("Failed to read line from stdin: {}");

        let command = match json::read_state_from_json_file(&Path::new(&format!(
            "./rounds/{}/state.json",
            round_number
        ))) {
            Ok(json_state) => match &mut game_board {
                None => {
                    let new_board = game::GameBoard::new(json_state);
                    let command = choose_move(&new_board, &config, start_time, max_time);
                    game_board = Some(new_board);
                    command
                }
                Some(game_board) => {
                    game_board.update(json_state);
                    choose_move(&game_board, &config, start_time, max_time)
                }
            },
            Err(e) => {
                #[cfg(feature = "logging")]
                eprintln!("WARN: State file could not be parsed: {}", e);
                Command::new(Action::DoNothing)
            }
        };
        println!("C;{};{}", round_number, command);
    }
}