teloxide/examples/dialogue.rs

127 lines
3.2 KiB
Rust

// This is a bot that asks you three questions, e.g. a simple test.
//
// # Example
// ```
// - Hey
// - Let's start! What's your full name?
// - Gandalf the Grey
// - How old are you?
// - 223
// - What's your location?
// - Middle-earth
// - Full name: Gandalf the Grey
// Age: 223
// Location: Middle-earth
// ```
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();
Dispatcher::builder(
bot,
Update::filter_message()
.enter_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,), // Available from `State::ReceiveAge`.
) -> 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), // Available from `State::ReceiveLocation`.
) -> 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(())
}