use fmt;
use getopt;
use io;
use net::dial;
use os;
use trace;
use unix::signal;

const help: [_]getopt::help = [
	"minecraft client",
	('u', "name", "username for login"),
	"addr",
];

export fn main() void = {
	signal::ignore(signal::sig::PIPE);
	dial::registersvc("tcp", "minecraft", [], 25565);

	let tracer = newtracer(os::stderr);
	trace::setroot(&tracer);
	defer trace::setroot(&trace::silent);

	const cmd = getopt::parse(os::args, help...);
	defer getopt::finish(&cmd);

	let username = "Player";

	for (let i = 0z; i < len(cmd.opts); i += 1) {
		const (flag, param) = cmd.opts[i];

		switch (flag) {
		case 'u' =>
			username = param;
		case => abort();
		};
	};

	if (len(cmd.args) != 1) {
		die_usage("expected exactly 1 positional argument");
	};
	const addr = cmd.args[0];

	window_run(addr, username);
};

fn error(fmt: str, args: fmt::field...) void = {
	fmt::errorf("{}: ", os::args[0]): void;
	fmt::errorfln(fmt, args...): void;
};

fn die(fmt: str, args: fmt::field...) never = {
	error(fmt, args...);
	os::exit(1);
};

fn die_usage(fmt: str, args: fmt::field...) never = {
	error(fmt, args...);
	getopt::printusage(os::stderr, os::args[0], help)!;
	os::exit(1);
};