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https://github.com/teloxide/teloxide.git
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53be9d0e92
In reordering the parameters, I stick the following principle: place parameters from least changing to most changing. Thus, we have config and bot right from the beginning, next a dialogue with a possible payload, and next updates such as messages, inline queries, etc. This principle is used in languages with a native support for currying, although in Rust people appear to order parameters arbitrarily, so this commit is mostly for the sake of consistency.
Former-commit-id: 5922984f6c
57 lines
1.6 KiB
Rust
57 lines
1.6 KiB
Rust
// The version of Heroku ping-pong-bot, which uses a webhook to receive updates
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// from Telegram, instead of long polling.
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//
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// You will need to configure the buildpack for heroku. We will be using Heroku
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// rust buildpack [1]. Configuration was done by using heroku CLI.
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//
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// If you're creating a new Heroku application, run this:
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//
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// ```
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// heroku create --buildpack emk/rust
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// ```
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//
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// To set buildpack for existing applicaton:
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//
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// ```
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// heroku buildpacks:set emk/rust
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// ```
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//
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// [1]: https://github.com/emk/heroku-buildpack-rust
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use std::env;
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use teloxide::{dispatching::update_listeners::webhooks, prelude::*};
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#[tokio::main]
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async fn main() {
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pretty_env_logger::init();
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log::info!("Starting Heroku ping-pong bot...");
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let bot = Bot::from_env();
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// Heroku auto defines a port value
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let port: u16 = env::var("PORT")
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.expect("PORT env variable is not set")
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.parse()
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.expect("PORT env variable value is not an integer");
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let addr = ([0, 0, 0, 0], port).into();
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// Heroku host example: "heroku-ping-pong-bot.herokuapp.com"
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let host = env::var("HOST").expect("HOST env variable is not set");
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let url = format!("https://{host}/webhook").parse().unwrap();
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let listener = webhooks::axum(bot.clone(), webhooks::Options::new(addr, url))
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.await
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.expect("Couldn't setup webhook");
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teloxide::repl_with_listener(
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bot,
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|bot: Bot, msg: Message| async move {
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bot.send_message(msg.chat.id, "pong").await?;
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Ok(())
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},
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listener,
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)
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.await;
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}
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