use std::{env, process::exit}; use tokio::time::{sleep, Duration}; use matrix_sdk::{ self, async_trait, events::{room::member::MemberEventContent, StrippedStateEvent}, Client, ClientConfig, EventHandler, Room, RoomType, SyncSettings, }; use url::Url; struct AutoJoinBot { client: Client, } impl AutoJoinBot { pub fn new(client: Client) -> Self { Self { client } } } #[async_trait] impl EventHandler for AutoJoinBot { async fn on_stripped_state_member( &self, room: Room, room_member: &StrippedStateEvent, _: Option, ) { if room_member.state_key != self.client.user_id().await.unwrap() { return; } if room.room_type() == RoomType::Invited { println!("Autojoining room {}", room.room_id()); let mut delay = 2; while let Err(err) = self.client.join_room_by_id(room.room_id()).await { // retry autojoin due to synapse sending invites, before the // invited user can join for more information see // https://github.com/matrix-org/synapse/issues/4345 eprintln!( "Failed to join room {} ({:?}), retrying in {}s", room.room_id(), err, delay ); sleep(Duration::from_secs(delay)).await; delay *= 2; if delay > 3600 { eprintln!("Can't join room {} ({:?})", room.room_id(), err); break; } } println!("Successfully joined room {}", room.room_id()); } } } async fn login_and_sync( homeserver_url: String, username: &str, password: &str, ) -> Result<(), matrix_sdk::Error> { let mut home = dirs::home_dir().expect("no home directory found"); home.push("autojoin_bot"); let client_config = ClientConfig::new().store_path(home); let homeserver_url = Url::parse(&homeserver_url).expect("Couldn't parse the homeserver URL"); let client = Client::new_with_config(homeserver_url, client_config).unwrap(); client .login(username, password, None, Some("autojoin bot")) .await?; println!("logged in as {}", username); client .set_event_handler(Box::new(AutoJoinBot::new(client.clone()))) .await; client.sync(SyncSettings::default()).await; Ok(()) } #[tokio::main] async fn main() -> Result<(), matrix_sdk::Error> { tracing_subscriber::fmt::init(); let (homeserver_url, username, password) = match (env::args().nth(1), env::args().nth(2), env::args().nth(3)) { (Some(a), Some(b), Some(c)) => (a, b, c), _ => { eprintln!( "Usage: {} ", env::args().next().unwrap() ); exit(1) } }; login_and_sync(homeserver_url, &username, &password).await?; Ok(()) }