| 1 | use macltok::{ |
| 2 | EngineConfig, Event, PasswordLogin, Retain, RoomMembership, Session, StoreConfig, |
| 3 | TimelineContent, TimelineId, TimelineItem, |
| 4 | }; |
| 5 | |
| 6 | #[tokio::main] |
| 7 | async fn main() -> Result<(), Box<dyn std::error::Error>> { |
| 8 | let store_path = std::path::PathBuf::from(required("MATRIX_STORE_PATH")?); |
| 9 | let passphrase = required("MATRIX_STORE_PASSPHRASE")?; |
| 10 | // a real client keeps this somewhere safer, it holds the access token |
| 11 | let record_path = store_path.join("session.json"); |
| 12 | let store = StoreConfig::sqlite(&store_path, &passphrase); |
| 13 | let session = match std::fs::read(&record_path) { |
| 14 | Ok(saved) => Session::restore(serde_json::from_slice(&saved)?, store).await?, |
| 15 | Err(_) => { |
| 16 | let session = Session::login_password( |
| 17 | PasswordLogin::new( |
| 18 | required("MATRIX_HOMESERVER")?, |
| 19 | required("MATRIX_USERNAME")?, |
| 20 | required("MATRIX_PASSWORD")?, |
| 21 | ) |
| 22 | .with_device_display_name("macltok headless example"), |
| 23 | store, |
| 24 | ) |
| 25 | .await?; |
| 26 | std::fs::write(&record_path, serde_json::to_vec(&session.record())?)?; |
| 27 | session |
| 28 | } |
| 29 | }; |
| 30 | let (engine, handle, mut events) = session.build(EngineConfig::default()).await?; |
| 31 | let running = tokio::spawn(engine.run()); |
| 32 | let mut opened: Option<TimelineId> = None; |
| 33 | let mut items = Vec::new(); |
| 34 | let mut stale = false; |
| 35 | |
| 36 | loop { |
| 37 | tokio::select! { |
| 38 | event = events.recv() => { |
| 39 | let Some(event) = event else { break }; |
| 40 | match event { |
| 41 | Event::RoomsChanged if opened.is_none() => { |
| 42 | let Some(room) = handle |
| 43 | .rooms() |
| 44 | .await |
| 45 | .into_iter() |
| 46 | .find(|room| room.membership == RoomMembership::Joined) |
| 47 | else { |
| 48 | continue; |
| 49 | }; |
| 50 | opened = Some(room.room_id.clone().into()); |
| 51 | // answers arrive on their own, the event loop keeps draining meanwhile |
| 52 | let handle = handle.clone(); |
| 53 | tokio::spawn(async move { |
| 54 | if let Err(error) = handle.open_room(room.room_id).await { |
| 55 | eprintln!("could not open {error}"); |
| 56 | } |
| 57 | }); |
| 58 | } |
| 59 | Event::TimelineReset { timeline_id, items: snapshot } |
| 60 | if opened.as_ref() == Some(&timeline_id) => |
| 61 | { |
| 62 | items = snapshot; |
| 63 | stale = false; |
| 64 | print_messages(&items); |
| 65 | } |
| 66 | Event::TimelineChanged { timeline_id, diffs } |
| 67 | if !stale && opened.as_ref() == Some(&timeline_id) => |
| 68 | { |
| 69 | if diffs.into_iter().any(|diff| diff.try_apply(&mut items).is_err()) { |
| 70 | stale = true; |
| 71 | let handle = handle.clone(); |
| 72 | tokio::spawn(async move { handle.resync(timeline_id).await }); |
| 73 | continue; |
| 74 | } |
| 75 | print_messages(&items); |
| 76 | } |
| 77 | Event::SessionTokensChanged => { |
| 78 | std::fs::write(&record_path, serde_json::to_vec(&handle.session_record()?)?)?; |
| 79 | } |
| 80 | Event::Stopped => break, |
| 81 | _ => {} |
| 82 | } |
| 83 | } |
| 84 | result = tokio::signal::ctrl_c() => { |
| 85 | result?; |
| 86 | let handle = handle.clone(); |
| 87 | tokio::spawn(async move { handle.shutdown().await }); |
| 88 | } |
| 89 | } |
| 90 | } |
| 91 | match running.await??.retain() { |
| 92 | Retain::RecordAndStore => {} |
| 93 | Retain::Store => std::fs::remove_file(&record_path)?, |
| 94 | Retain::Nothing => std::fs::remove_dir_all(&store_path)?, |
| 95 | } |
| 96 | Ok(()) |
| 97 | } |
| 98 | |
| 99 | fn print_messages(items: &[TimelineItem]) { |
| 100 | for item in items { |
| 101 | if let TimelineItem::Event(event) = item |
| 102 | && let TimelineContent::Message(message) = &event.content |
| 103 | { |
| 104 | println!("{} {}", event.sender.name(), message.body); |
| 105 | } |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | fn required(name: &str) -> Result<String, Box<dyn std::error::Error>> { |
| 110 | std::env::var(name).map_err(|_| format!("{name} is required").into()) |
| 111 | } |