teloxide

A full-featured framework that empowers you to easily build Telegram bots using the async/.await syntax in Rust. It handles all the difficult stuff so you can focus only on your business logic.

Highlights

• Declarative design. teloxide is based upon dptree, a functional-style chain of responsibility pattern that allows you to express pipelines of message processing in a highly declarative and extensible style.

• Dialogues management subsystem. Our dialogues management subsystem is simple and easy-to-use, and, furthermore, is agnostic of how/where dialogues are stored. For example, you can just replace a one line to achieve persistence. Out-of-the-box storages include Redis and Sqlite.

• Strongly typed commands. You can describe bot commands as enumerations, and then they'll be automatically constructed from strings — just like JSON structures in serde-json and command-line arguments in structopt.

Setting up your environment

1. Download Rust.
2. Create a new bot using @Botfather to get a token in the format 123456789:blablabla.
3. Initialise the TELOXIDE_TOKEN environmental variable to your token:

# Unix-like
$ export TELOXIDE_TOKEN=<Your token here>

# Windows command line
$ set TELOXIDE_TOKEN=<Your token here>

# Windows PowerShell
$ $env:TELOXIDE_TOKEN=<Your token here>

4. Make sure that your Rust compiler is up to date:

# If you're using stable
$ rustup update stable
$ rustup override set stable

# If you're using nightly
$ rustup update nightly
$ rustup override set nightly

5. Run cargo new my_bot, enter the directory and put these lines into your Cargo.toml:

[dependencies]
teloxide = { version = "0.5", features = ["macros", "auto-send"] }
log = "0.4"
pretty_env_logger = "0.4.0"
tokio = { version =  "1.8", features = ["rt-multi-thread", "macros"] }

API overview

The dices bot

This bot replies with a dice throw to each received message:

(Full)

use teloxide::prelude2::*;

#[tokio::main]
async fn main() {
    teloxide::enable_logging!();
    log::info!("Starting dices_bot...");

    let bot = Bot::from_env().auto_send();

    teloxide::repls2::repl(bot, |message: Message, bot: AutoSend<Bot>| async move {
        bot.send_dice(message.chat.id).await?;
        respond(())
    })
    .await;
}

Commands

Commands are strongly typed and defined declaratively, similar to how we define CLI using structopt and JSON structures in serde-json. The following bot accepts these commands:

• /username <your username>
• /usernameandage <your username> <your age>
• /help

(Full)

use teloxide::{prelude2::*, utils::command::BotCommand};

use std::error::Error;

#[derive(BotCommand, Clone)]
#[command(rename = "lowercase", description = "These commands are supported:")]
enum Command {
    #[command(description = "display this text.")]
    Help,
    #[command(description = "handle a username.")]
    Username(String),
    #[command(description = "handle a username and an age.", parse_with = "split")]
    UsernameAndAge { username: String, age: u8 },
}

async fn answer(
    bot: AutoSend<Bot>,
    message: Message,
    command: Command,
) -> Result<(), Box<dyn Error + Send + Sync>> {
    match command {
        Command::Help => bot.send_message(message.chat.id, Command::descriptions()).await?,
        Command::Username(username) => {
            bot.send_message(message.chat.id, format!("Your username is @{}.", username)).await?
        }
        Command::UsernameAndAge { username, age } => {
            bot.send_message(
                message.chat.id,
                format!("Your username is @{} and age is {}.", username, age),
            )
            .await?
        }
    };

    Ok(())
}

#[tokio::main]
async fn main() {
    teloxide::enable_logging!();
    log::info!("Starting simple_commands_bot...");

    let bot = Bot::from_env().auto_send();

    teloxide::repls2::commands_repl(bot, answer, Command::ty()).await;
}

Dialogues management

A dialogue is typically described by an enumeration where each variant is one of possible dialogue's states. There are also state handler functions, which may turn a dialogue from one state to another, thereby forming an FSM.

Below is a bot that asks you three questions and then sends the answers back to you:

(Full)

use teloxide::{dispatching2::dialogue::InMemStorage, macros::DialogueState, prelude2::*};

type MyDialogue = Dialogue<State, InMemStorage<State>>;

#[derive(DialogueState, Clone)]
#[handler_out(anyhow::Result<()>)]
pub enum State {
    #[handler(handle_start)]
    Start,

    #[handler(handle_receive_full_name)]
    ReceiveFullName,

    #[handler(handle_receive_age)]
    ReceiveAge { full_name: String },

    #[handler(handle_receive_location)]
    ReceiveLocation { full_name: String, age: u8 },
}

impl Default for State {
    fn default() -> Self {
        Self::Start
    }
}

#[tokio::main]
async fn main() {
    teloxide::enable_logging!();
    log::info!("Starting dialogue_bot...");

    let bot = Bot::from_env().auto_send();

    DispatcherBuilder::new(
        bot,
        Update::filter_message()
            .add_dialogue::<Message, InMemStorage<State>, State>()
            .dispatch_by::<State>(),
    )
    .dependencies(dptree::deps![InMemStorage::<State>::new()])
    .build()
    .setup_ctrlc_handler()
    .dispatch()
    .await;
}

async fn handle_start(
    bot: AutoSend<Bot>,
    msg: Message,
    dialogue: MyDialogue,
) -> anyhow::Result<()> {
    bot.send_message(msg.chat.id, "Let's start! What's your full name?").await?;
    dialogue.update(State::ReceiveFullName).await?;
    Ok(())
}

async fn handle_receive_full_name(
    bot: AutoSend<Bot>,
    msg: Message,
    dialogue: MyDialogue,
) -> anyhow::Result<()> {
    match msg.text() {
        Some(text) => {
            bot.send_message(msg.chat.id, "How old are you?").await?;
            dialogue.update(State::ReceiveAge { full_name: text.into() }).await?;
        }
        None => {
            bot.send_message(msg.chat.id, "Send me plain text.").await?;
        }
    }

    Ok(())
}

async fn handle_receive_age(
    bot: AutoSend<Bot>,
    msg: Message,
    dialogue: MyDialogue,
    (full_name,): (String,),
) -> anyhow::Result<()> {
    match msg.text().map(|text| text.parse::<u8>()) {
        Some(Ok(age)) => {
            bot.send_message(msg.chat.id, "What's your location?").await?;
            dialogue.update(State::ReceiveLocation { full_name, age }).await?;
        }
        _ => {
            bot.send_message(msg.chat.id, "Send me a number.").await?;
        }
    }

    Ok(())
}

async fn handle_receive_location(
    bot: AutoSend<Bot>,
    msg: Message,
    dialogue: MyDialogue,
    (full_name, age): (String, u8),
) -> anyhow::Result<()> {
    match msg.text() {
        Some(location) => {
            let message = format!("Full name: {}\nAge: {}\nLocation: {}", full_name, age, location);
            bot.send_message(msg.chat.id, message).await?;
            dialogue.exit().await?;
        }
        None => {
            bot.send_message(msg.chat.id, "Send me plain text.").await?;
        }
    }

    Ok(())
}

More examples >>

FAQ

Q: Where I can ask questions?

A: Issues is a good place for well-formed questions about the library design, enhancements, and bug reports. If you can't compile your bot due to compilation errors and need quick help, feel free to ask in our official Telegram group.

Q: Do you support the Telegram API for clients?

A: No, only the bots API.

Q: Can I use webhooks?

A: teloxide doesn't provide special API for working with webhooks due to their nature with lots of subtle settings. Instead, you should setup your webhook by yourself, as shown in examples/ngrok_ping_pong_bot and examples/heroku_ping_pong_bot.

Associated links:

• Marvin's Marvellous Guide to All Things Webhook
• Using self-signed certificates

Q: Can I use different loggers?

A: Yes. You can setup any logger, for example, fern, e.g. teloxide has no specific requirements as it depends only on log. Remember that enable_logging! and enable_logging_with_filter! are just optional utilities.

Community bots

Feel free to propose your own bot to our collection!

• WaffleLapkin/crate_upd_bot -- A bot that notifies about crate updates.
• mxseev/logram -- Utility that takes logs from anywhere and sends them to Telegram.
• alexkonovalov/PedigreeBot -- A Telegram bot for building family trees.
• Hermitter/tepe -- A CLI to command a bot to send messages and files over Telegram.
• dracarys18/grpmr-rs -- A Telegram group manager bot with variety of extra features.
• steadylearner/subreddit_reader -- A bot that shows the latest posts at Rust subreddit.
• myblackbeard/basketball-betting-bot -- The bot lets you bet on NBA games against your buddies.
• ArtHome12/vzmuinebot -- Telegram bot for food menu navigate.
• ArtHome12/cognito_bot -- The bot is designed to anonymize messages to a group.
• pro-vim/tg-vimhelpbot -- Link :help for Vim in Telegram.
• sschiz/janitor-bot -- A bot that removes users trying to join to a chat that is designed for comments.
• slondr/BeerHolderBot -- A bot that holds your beer.
• MustafaSalih1993/Miss-Vodka-Telegram-Bot -- A Telegram bot written in rust using "Teloxide" library.
• x13a/tg-prompt -- Telegram prompt.
• magnickolas/remindee-bot -- Telegram bot for managing reminders.
• cyberknight777/knight-bot -- A Telegram bot with variety of fun features.
• wa7sa34cx/the-black-box-bot -- This is the Black Box Telegram bot. You can hold any items in it.
• crapstone/hsctt -- A Telegram bot that searches for HTTP status codes in all messages and replies with the text form.
• alenpaul2001/AurSearchBot -- Telegram bot for searching AUR in inline mode.

Contributing

See CONRIBUTING.md.