1use std::env::args;
 2use std::process::exit;
 3use try_from::TryFrom;
 4use futures::{Stream, Sink, future};
 5use tokio::runtime::current_thread::Runtime;
 6use tokio_xmpp::Client;
 7use minidom::Element;
 8use xmpp_parsers::presence::{Presence, Type as PresenceType, Show as PresenceShow};
 9use xmpp_parsers::message::{Message, MessageType, Body};
10use jid::Jid;
11
12fn main() {
13    let args: Vec<String> = args().collect();
14    if args.len() != 3 {
15        println!("Usage: {} <jid> <password>", args[0]);
16        exit(1);
17    }
18    let jid = &args[1];
19    let password = &args[2];
20
21    // tokio_core context
22    let mut rt = Runtime::new().unwrap();
23    // Client instance
24    let client = Client::new(jid, password).unwrap();
25
26    // Make the two interfaces for sending and receiving independent
27    // of each other so we can move one into a closure.
28    let (mut sink, stream) = client.split();
29    // Wrap sink in Option so that we can take() it for the send(self)
30    // to consume and return it back when ready.
31    let mut send = move |stanza| {
32        sink.start_send(stanza).expect("start_send");
33    };
34    // Main loop, processes events
35    let done = stream.for_each(|event| {
36        if event.is_online() {
37            println!("Online!");
38
39            let presence = make_presence();
40            send(presence);
41        } else if let Some(message) = event.into_stanza()
42            .and_then(|stanza| Message::try_from(stanza).ok())
43        {
44            // This is a message we'll echo
45            match (message.from, message.bodies.get("")) {
46                (Some(from), Some(body)) =>
47                    if message.type_ != MessageType::Error {
48                        let reply = make_reply(from, &body.0);
49                        send(reply);
50                    },
51                _ => (),
52            }
53        }
54
55        Box::new(future::ok(()))
56    });
57
58    // Start polling `done`
59    match rt.block_on(done) {
60        Ok(_) => (),
61        Err(e) => {
62            println!("Fatal: {}", e);
63            ()
64        }
65    }
66}
67
68// Construct a <presence/>
69fn make_presence() -> Element {
70    let mut presence = Presence::new(PresenceType::None);
71    presence.show = PresenceShow::Chat;
72    presence.statuses.insert(String::from("en"), String::from("Echoing messages."));
73    presence.into()
74}
75
76// Construct a chat <message/>
77fn make_reply(to: Jid, body: &str) -> Element {
78    let mut message = Message::new(Some(to));
79    message.bodies.insert(String::new(), Body(body.to_owned()));
80    message.into()
81}