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

use vroomba::command::Command;
use vroomba::*;

fn main() {
    for line in stdin().lock().lines() {
        let round_number = line
            .expect("Failed to read line from stdin: {}")
            .parse::<usize>()
            .expect("Round number was not an unsigned integer: {}");
        let command =
            match json::read_state_from_json_file(&format!("./rounds/{}/state.json", round_number))
            {
                Ok(state) => choose_command(round_number, &state),
                Err(e) => {
                    eprintln!("WARN: State file could not be parsed: {}", e);
                    Command::Nothing
                }
            };
        println!("C;{};{}", round_number, command);
    }
}