use std::{ env, fs::File, io::{Seek, SeekFrom}, path::PathBuf, process::exit, sync::Arc, }; use tokio::sync::Mutex; use matrix_sdk::{ self, async_trait, events::{ room::message::{MessageEventContent, TextMessageEventContent}, SyncMessageEvent, }, Client, EventEmitter, RoomState, SyncSettings, }; use url::Url; struct ImageBot { client: Client, image: Arc<Mutex<File>>, } impl ImageBot { pub fn new(client: Client, image: File) -> Self { let image = Arc::new(Mutex::new(image)); Self { client, image } } } #[async_trait] impl EventEmitter for ImageBot { async fn on_room_message( &self, room: RoomState, event: &SyncMessageEvent<MessageEventContent>, ) { if let RoomState::Joined(room) = room { let msg_body = if let SyncMessageEvent { content: MessageEventContent::Text(TextMessageEventContent { body: msg_body, .. }), .. } = event { msg_body } else { return; }; if msg_body.contains("!image") { println!("sending image"); let mut image = self.image.lock().await; self.client .room_send_attachment( room.room_id(), "cat", &mime::IMAGE_JPEG, &mut *image, None, ) .await .unwrap(); image.seek(SeekFrom::Start(0)).unwrap(); println!("message sent"); } } } } async fn login_and_sync( homeserver_url: String, username: String, password: String, image: File, ) -> Result<(), matrix_sdk::Error> { let homeserver_url = Url::parse(&homeserver_url).expect("Couldn't parse the homeserver URL"); let client = Client::new(homeserver_url).unwrap(); client .login(&username, &password, None, Some("command bot")) .await?; client.sync_once(SyncSettings::default()).await.unwrap(); client .add_event_emitter(Box::new(ImageBot::new(client.clone(), image))) .await; let settings = SyncSettings::default().token(client.sync_token().await.unwrap()); client.sync(settings).await; Ok(()) } #[tokio::main] async fn main() -> Result<(), matrix_sdk::Error> { tracing_subscriber::fmt::init(); let (homeserver_url, username, password, image_path) = match ( env::args().nth(1), env::args().nth(2), env::args().nth(3), env::args().nth(4), ) { (Some(a), Some(b), Some(c), Some(d)) => (a, b, c, d), _ => { eprintln!( "Usage: {} <homeserver_url> <username> <password> <image>", env::args().next().unwrap() ); exit(1) } }; println!( "helloooo {} {} {} {:#?}", homeserver_url, username, password, image_path ); let path = PathBuf::from(image_path); let image = File::open(path).expect("Can't open image file."); login_and_sync(homeserver_url, username, password, image).await?; Ok(()) }