use std::net;
use clap;
use message::common::Magic;

pub struct Config {
	pub magic: Magic,
	pub port: u16,
	pub connect: Option<net::IpAddr>,
	pub seednode: Option<net::IpAddr>,
	pub print_to_console: bool,
}

pub fn parse(matches: &clap::ArgMatches) -> Result<Config, String> {
	let print_to_console = matches.is_present("printtoconsole");
	let magic = match matches.is_present("testnet") {
		true => Magic::Testnet,
		false => Magic::Mainnet,
	};

	let port = match matches.value_of("port") {
		Some(port) => try!(port.parse().map_err(|_| "Invalid port".to_owned())),
		None => magic.port(),
	};

	let connect = match matches.value_of("connect") {
		Some(s) => Some(try!(s.parse().map_err(|_| "Invalid connect".to_owned()))),
		None => None,
	};

	let seednode = match matches.value_of("seednode") {
		Some(s) => Some(try!(s.parse().map_err(|_| "Invalid seednode".to_owned()))),
		None => None,
	};

	let config = Config {
		print_to_console: print_to_console,
		magic: magic,
		port: port,
		connect: connect,
		seednode: seednode,
	};

	Ok(config)
}