rutebot

Rust Telegram Bot. A framework offering Telegram Bot API bindings for the Rust programming language.

For details see the docs.

Example

A simple greetings bot. Replies to all messages with text "Hello %USERNAME%"

You can run the following example with cargo run --example simplebot.

use std::env;

use futures::future::Future;
use futures::stream::Stream;
use rutebot::client::Rutebot;
use rutebot::requests::{GetUpdates, SendMessage};
use rutebot::responses::Update;

fn main() {
    let token_env = env::var_os("TELEGRAM_TOKEN")
        .expect("Please specify your bot's token in the TELEGRAM_TOKEN environment variable.");
    let token = token_env.to_string_lossy();

    let rutebot = Rutebot::new(token);
    let get_updates = GetUpdates::new_with_timeout(20);
    let updates = rutebot
        .incoming_updates(get_updates)
        .for_each(move |update| {
            let create_reply_request = |update: Update| {
                let message = update.message?;
                let response_message = format!("Hello {}", message.from?.first_name);
                let reply =
                    SendMessage::new_reply(message.chat.id, &response_message, message.message_id);
                Some(rutebot.prepare_api_request(reply))
            };

            if let Some(reply) = create_reply_request(update) {
                tokio::spawn(reply.send().then(|_| Ok(())));
            }
            Ok(())
        })
        .then(|_| Ok(()));

    tokio::run(updates);
}