1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73

//! telegram bot handler.

use futures_async_stream::for_await;
use telegram_client::{MessageKind, Update, UpdateKind};

use cxmr_broker::SharedBroker;

use super::{plugins, ChatClient, Error};

/// Creates telegram bot.
pub async fn start_bot(chat: ChatClient, broker: SharedBroker) -> Result<(), Error> {
    // notify owner bot is starting
    chat.notify_owner("crypto-bank is starting; use /cmds to list commands".to_string())
        .await?;

    let mut stream = chat.api.clone().into_stream();

    #[for_await]
    for update in stream.updates() {
        match update {
            Ok(update) => {
                if let Err(e) = handle_message(&chat, &broker, update).await {
                    error!("Telegram handle message error: {:?}", e);
                }
            }
            Err(e) => {
                error!("Telegram bot error: {:?}", e);
            }
        }
    }

    Ok(())
}

async fn handle_message(
    chat: &ChatClient,
    broker: &SharedBroker,
    update: Update,
) -> Result<(), Error> {
    // If the received update contains a new message...
    if let UpdateKind::Message(message) = update.kind {
        if message.chat.id() != chat.owner {
            info!("Telegram unknown sender: {:?}", &message.from);
        }

        if let MessageKind::Text { ref data, .. } = message.kind {
            info!("Telegram: <{}>: {}", &message.from.first_name, data);
            let mut msg = data.split_whitespace();
            match msg.next() {
                Some("/cmds") | Some("/commands") | Some("/help") => {
                    plugins::commands(&chat, &message).await?;
                }
                Some("/bnc") => {
                    plugins::balances(&chat, &message, broker).await?;
                }
                Some("/btc") => {
                    plugins::btc(&chat, &message, broker).await?;
                }
                Some(other) => {
                    chat.send(
                        &message.chat,
                        format!(
                            "Hi, **{}**! Your command '{}' was not recognized. Try /cmds to list commands.",
                            &message.from.first_name, other
                        ),
                    ).await?;
                }
                None => {}
            }
        }
    }
    Ok(())
}