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mod bot;
pub mod prelude;
use async_trait::async_trait;
pub use azalea_client::*;
use azalea_protocol::ServerAddress;
use parking_lot::Mutex;
use std::{future::Future, sync::Arc};
use thiserror::Error;
/// Plugins can keep their own personal state, listen to events, and add new functions to Client.
#[async_trait]
pub trait Plugin: Send + Sync {
async fn handle(self: Arc<Self>, bot: Client, event: Arc<Event>);
}
// pub type HeuristicFn<N, W> = fn(start: &Vertex<N, W>, current: &Vertex<N, W>) -> W;
pub type HandleFn<Fut, S> = fn(Client, Arc<Event>, Arc<Mutex<S>>) -> Fut;
pub struct Options<S, A, Fut>
where
A: TryInto<ServerAddress>,
Fut: Future<Output = Result<(), anyhow::Error>>,
{
pub address: A,
pub account: Account,
pub plugins: Vec<Arc<dyn Plugin>>,
pub state: Arc<Mutex<S>>,
pub handle: HandleFn<Fut, S>,
}
#[derive(Error, Debug)]
pub enum Error {
#[error("Invalid address")]
InvalidAddress,
}
/// Join a Minecraft server.
///
/// ```no_run
/// azalea::start(azalea::Options {
/// account,
/// address: "localhost",
/// state: Arc::new(Mutex::new(State::default())),
/// plugins: vec![&autoeat::Plugin::default()],
/// handle: Box::new(handle),
/// }).await.unwrap();
/// ```
pub async fn start<
S: Send + 'static,
A: Send + TryInto<ServerAddress>,
Fut: Future<Output = Result<(), anyhow::Error>> + Send + 'static,
>(
options: Options<S, A, Fut>,
) -> Result<(), Error> {
let address = match options.address.try_into() {
Ok(address) => address,
Err(_) => return Err(Error::InvalidAddress),
};
let (bot, mut rx) = options.account.join(&address).await.unwrap();
let state = options.state;
let bot_plugin = Arc::new(bot::Plugin::default());
while let Some(event) = rx.recv().await {
// we put it into an Arc so it's cheaper to clone
let event = Arc::new(event);
for plugin in &options.plugins {
tokio::spawn(plugin.clone().handle(bot.clone(), event.clone()));
}
{
let bot_plugin = bot_plugin.clone();
let bot = bot.clone();
let event = event.clone();
tokio::spawn(bot::Plugin::handle(bot_plugin, bot, event));
};
tokio::spawn((options.handle)(bot.clone(), event.clone(), state.clone()));
}
Ok(())
}
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