tsclientlib 0.2.0

use anyhow::{bail, Result};
use futures::prelude::*;
use structopt::StructOpt;
use tokio::time::{self, Duration};

use tsclientlib::{Connection, DisconnectOptions, Identity, StreamItem};

#[derive(StructOpt, Debug)]
#[structopt(author, about)]
struct Args {
	/// The address of the server to connect to
	#[structopt(short = "a", long, default_value = "localhost")]
	address: String,
	/// Print the content of all packets
	///
	/// 0. Print nothing
	/// 1. Print command string
	/// 2. Print packets
	/// 3. Print udp packets
	#[structopt(short = "v", long, parse(from_occurrences))]
	verbose: u8,
}

#[tokio::main]
async fn main() -> Result<()> { real_main().await }

async fn real_main() -> Result<()> {
	// Parse command line options
	let args = Args::from_args();

	let con_config = Connection::build(args.address)
		.log_commands(args.verbose >= 1)
		.log_packets(args.verbose >= 2)
		.log_udp_packets(args.verbose >= 3);

	// Optionally set the key of this client, otherwise a new key is generated.
	let id = Identity::new_from_str(
		"MG0DAgeAAgEgAiAIXJBlj1hQbaH0Eq0DuLlCmH8bl+veTAO2+\
		k9EQjEYSgIgNnImcmKo7ls5mExb6skfK2Tw+u54aeDr0OP1ITs\
		C/50CIA8M5nmDBnmDM/gZ//4AAAAAAAAAAAAAAAAAAAAZRzOI").unwrap();
	let con_config = con_config.identity(id);

	// Connect
	let mut con = con_config.connect()?;

	let r = con
		.events()
		.try_filter(|e| future::ready(matches!(e, StreamItem::BookEvents(_))))
		.next()
		.await;
	if let Some(r) = r {
		r?;
	}

	println!("Server welcome message: {}", sanitize(&con.get_state()?.server.welcome_message));

	// Wait some time
	let mut events = con.events().try_filter(|_| future::ready(false));
	tokio::select! {
		_ = time::sleep(Duration::from_secs(1)) => {}
		_ = events.next() => {
			bail!("Disconnected");
		}
	};
	drop(events);

	// Disconnect
	con.disconnect(DisconnectOptions::new())?;
	con.events().for_each(|_| future::ready(())).await;

	Ok(())
}

/// Only retain a certain set of characters.
fn sanitize(s: &str) -> String {
	s.chars()
		.filter(|c| {
			c.is_alphanumeric()
				|| [' ', '\t', '.', ':', '-', '_', '"', '\'', '/', '(', ')', '[', ']', '{', '}']
					.contains(c)
		})
		.collect()
}