matrix-rust-sdk/matrix_sdk/examples/autojoin.rs

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use std::{env, process::exit};
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use tokio::time::{delay_for, Duration};
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use matrix_sdk::{
self,
events::{room::member::MemberEventContent, StrippedStateEvent},
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Client, ClientConfig, EventEmitter, SyncRoom, SyncSettings,
};
use matrix_sdk_common_macros::async_trait;
use url::Url;
struct AutoJoinBot {
client: Client,
}
impl AutoJoinBot {
pub fn new(client: Client) -> Self {
Self { client }
}
}
#[async_trait]
impl EventEmitter for AutoJoinBot {
async fn on_stripped_state_member(
&self,
room: SyncRoom,
room_member: &StrippedStateEvent<MemberEventContent>,
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_: Option<MemberEventContent>,
) {
if room_member.state_key != self.client.user_id().await.unwrap() {
return;
}
if let SyncRoom::Invited(room) = room {
let room = room.read().await;
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println!("Autojoining room {}", room.room_id);
let mut delay = 2;
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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
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eprintln!(
"Failed to join room {} ({:?}), retrying in {}s",
room.room_id, err, delay
);
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delay_for(Duration::from_secs(delay)).await;
delay *= 2;
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if delay > 3600 {
eprintln!("Can't join room {} ({:?})", room.room_id, err);
break;
}
}
println!("Successfully joined room {}", room.room_id);
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}
}
}
async fn login_and_sync(
homeserver_url: String,
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username: &str,
password: &str,
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) -> 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 mut client = Client::new_with_config(homeserver_url, client_config).unwrap();
client
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.login(username, password, None, Some("autojoin bot"))
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.await?;
println!("logged in as {}", username);
client
.add_event_emitter(Box::new(AutoJoinBot::new(client.clone())))
.await;
client.sync(SyncSettings::default()).await;
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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: {} <homeserver_url> <username> <password>",
env::args().next().unwrap()
);
exit(1)
}
};
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login_and_sync(homeserver_url, &username, &password).await?;
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Ok(())
}