extern crate json;
extern crate rand;

mod actions;
mod math;
mod files;
mod ships;
mod placement;
mod shooting;
mod state;

use math::*;
use files::*;
use ships::*;
use placement::*;
use shooting::*;
use state::*;

use std::path::PathBuf;

pub fn write_move(working_dir: PathBuf) -> Result<(), String> {
    let state_json = read_file(&working_dir)?;

    println!("\n\n{}\n\n", state_json.pretty(2));

    let is_place_phase = state_json["Phase"] == 1;
    let map_size = State::map_size_from_json(&state_json)?;

    let action = if is_place_phase {
        place_ships_randomly(map_size)
    }
    else {
        let state = State::new(&state_json)?;
        shoot_randomly(&state)
    };

    write_action(&working_dir, is_place_phase, action)
        .map_err(|e| format!("Failed to write action to file. Error: {}", e))?;
    
    Ok(())
}