base: Add presence storing.

matrix_sdk_base/src/client.rs

@@ -579,18 +579,28 @@ impl BaseClient {
             changes.add_room(summary);
         }
 
-        self.store.save_changes(&changes).await;
-        *self.sync_token.write().await = Some(response.next_batch.clone());
-        self.apply_changes(changes).await;
-
-        Ok(SyncResponse::new(response.next_batch.clone(), rooms))
+        for event in &response.presence.events {
+            if let Ok(e) = event.deserialize() {
+                changes.add_presence_event(e);
+            }
         }
 
-    async fn apply_changes(&self, changes: StateChanges) {
+        self.store.save_changes(&changes).await;
+        *self.sync_token.write().await = Some(response.next_batch.clone());
+        self.apply_changes(&changes).await;
+
+        Ok(SyncResponse::new(
+            response.next_batch.clone(),
+            rooms,
+            changes,
+        ))
+    }
+
+    async fn apply_changes(&self, changes: &StateChanges) {
         // TODO emit room changes here
-        for (room_id, summary) in changes.room_summaries {
+        for (room_id, summary) in &changes.room_summaries {
             if let Some(room) = self.get_joined_room(&room_id) {
-                room.update_summary(summary)
+                room.update_summary(summary.clone())
             }
         }
     }
@@ -638,7 +648,7 @@ impl BaseClient {
             changes.add_room(summary);
 
             self.store.save_changes(&changes).await;
-            self.apply_changes(changes).await;
+            self.apply_changes(&changes).await;
         }
 
         Ok(())

matrix_sdk_base/src/responses.rs

@@ -2,20 +2,20 @@ use serde::{Deserialize, Serialize};
 use std::collections::BTreeMap;
 
 use matrix_sdk_common::{
-    events::{AnySyncRoomEvent, AnySyncStateEvent},
+    events::{presence::PresenceEvent, AnySyncRoomEvent, AnySyncStateEvent},
     identifiers::RoomId,
 };
 
+use crate::store::StateChanges;
+
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
 pub struct SyncResponse {
     /// The batch token to supply in the `since` param of the next `/sync` request.
     pub next_batch: String,
     /// Updates to rooms.
     pub rooms: Rooms,
-    ///// Updates to the presence status of other users.
-    //#[serde(default, skip_serializing_if = "Presence::is_empty")]
-    //pub presence: Presence,
-
+    /// Updates to the presence status of other users.
+    pub presence: Presence,
     ///// The global private data created by this user.
     //#[serde(default, skip_serializing_if = "AccountData::is_empty")]
     //pub account_data: AccountData,
@@ -37,8 +37,15 @@ pub struct SyncResponse {
 }
 
 impl SyncResponse {
-    pub fn new(next_batch: String, rooms: Rooms) -> Self {
-        Self { next_batch, rooms }
+    pub fn new(next_batch: String, rooms: Rooms, changes: StateChanges) -> Self {
+        Self {
+            next_batch,
+            rooms,
+            presence: Presence {
+                events: changes.presence.into_iter().map(|(_, v)| v).collect(),
+            },
+            ..Default::default()
+        }
     }
 
     pub fn new_empty(next_batch: String) -> Self {
@@ -49,6 +56,13 @@ impl SyncResponse {
     }
 }
 
+/// Updates to the presence status of other users.
+#[derive(Clone, Debug, Default, Deserialize, Serialize)]
+pub struct Presence {
+    /// A list of events.
+    pub events: Vec<PresenceEvent>,
+}
+
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
 pub struct Rooms {
     // /// The rooms that the user has left or been banned from.

matrix_sdk_base/src/store.rs

@@ -12,6 +12,7 @@ use futures::{
 use matrix_sdk_common::{
     api::r0::sync::sync_events::RoomSummary as RumaSummary,
     events::{
+        presence::PresenceEvent,
         room::{encryption::EncryptionEventContent, member::MemberEventContent},
         AnySyncStateEvent, EventContent, SyncStateEvent,
     },
@@ -32,20 +33,22 @@ pub struct Store {
     invited_user_ids: Tree,
     room_state: Tree,
     room_summaries: Tree,
+    presence: Tree,
 }
 
 use crate::{client::hoist_and_deserialize_state_event, Session};
 
 #[derive(Debug, Default)]
 pub struct StateChanges {
-    session: Option<Session>,
-    members: BTreeMap<RoomId, BTreeMap<UserId, SyncStateEvent<MemberEventContent>>>,
-    state: BTreeMap<RoomId, BTreeMap<String, AnySyncStateEvent>>,
+    pub session: Option<Session>,
+    pub members: BTreeMap<RoomId, BTreeMap<UserId, SyncStateEvent<MemberEventContent>>>,
+    pub state: BTreeMap<RoomId, BTreeMap<String, AnySyncStateEvent>>,
     pub room_summaries: BTreeMap<RoomId, InnerSummary>,
     // display_names: BTreeMap<RoomId, BTreeMap<String, BTreeMap<UserId, ()>>>,
     pub joined_user_ids: BTreeMap<RoomId, Vec<UserId>>,
     pub invited_user_ids: BTreeMap<RoomId, Vec<UserId>>,
-    removed_user_ids: BTreeMap<RoomId, UserId>,
+    pub removed_user_ids: BTreeMap<RoomId, UserId>,
+    pub presence: BTreeMap<UserId, PresenceEvent>,
 }
 
 impl StateChanges {
@@ -65,6 +68,10 @@ impl StateChanges {
             .insert(user_id, event);
     }
 
+    pub fn add_presence_event(&mut self, event: PresenceEvent) {
+        self.presence.insert(event.sender.clone(), event);
+    }
+
     pub fn add_invited_member(
         &mut self,
         room_id: &RoomId,
@@ -455,6 +462,7 @@ impl Store {
 
         let room_state = db.open_tree("room_state").unwrap();
         let room_summaries = db.open_tree("room_summaries").unwrap();
+        let presence = db.open_tree("presence").unwrap();
 
         Self {
             inner: db,
@@ -462,6 +470,7 @@ impl Store {
             members,
             joined_user_ids,
             invited_user_ids,
+            presence,
             room_state,
             room_summaries,
         }
@@ -501,8 +510,10 @@ impl Store {
             &self.invited_user_ids,
             &self.room_state,
             &self.room_summaries,
+            &self.presence,
         )
-            .transaction(|(session, members, joined, invited, state, summaries)| {
+            .transaction(
+                |(session, members, joined, invited, state, summaries, presence)| {
                     if let Some(s) = &changes.session {
                         session.insert("session", serde_json::to_vec(s).unwrap())?;
                     }
@@ -550,11 +561,16 @@ impl Store {
                     }
 
                     for (room_id, summary) in &changes.room_summaries {
-                    summaries.insert(room_id.as_str().as_bytes(), summary.serialize())?;
+                        summaries.insert(room_id.as_bytes(), summary.serialize())?;
+                    }
+
+                    for (sender, event) in &changes.presence {
+                        presence.insert(sender.as_bytes(), serde_json::to_vec(&event).unwrap())?;
                     }
 
                     Ok(())
-            });
+                },
+            );
 
         ret.unwrap();