1use futures::{future, Sink, Stream};
 2use jid::Jid;
 3use minidom::Element;
 4use std::env::args;
 5use std::process::exit;
 6use tokio::runtime::current_thread::Runtime;
 7use tokio_xmpp::Client;
 8use try_from::TryFrom;
 9use xmpp_parsers::message::{Body, Message, MessageType};
10use xmpp_parsers::presence::{Presence, Show as PresenceShow, Type as PresenceType};
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
42            .into_stanza()
43            .and_then(|stanza| Message::try_from(stanza).ok())
44        {
45            // This is a message we'll echo
46            match (message.from, message.bodies.get("")) {
47                (Some(from), Some(body)) => {
48                    if message.type_ != MessageType::Error {
49                        let reply = make_reply(from, &body.0);
50                        send(reply);
51                    }
52                }
53                _ => (),
54            }
55        }
56
57        Box::new(future::ok(()))
58    });
59
60    // Start polling `done`
61    match rt.block_on(done) {
62        Ok(_) => (),
63        Err(e) => {
64            println!("Fatal: {}", e);
65            ()
66        }
67    }
68}
69
70// Construct a <presence/>
71fn make_presence() -> Element {
72    let mut presence = Presence::new(PresenceType::None);
73    presence.show = PresenceShow::Chat;
74    presence
75        .statuses
76        .insert(String::from("en"), String::from("Echoing messages."));
77    presence.into()
78}
79
80// Construct a chat <message/>
81fn make_reply(to: Jid, body: &str) -> Element {
82    let mut message = Message::new(Some(to));
83    message.bodies.insert(String::new(), Body(body.to_owned()));
84    message.into()
85}