move presence up two levels out of rooms.edus and rooms.

Signed-off-by: Jason Volk <jason@zemos.net>

src/service/presence/data.rs

@@ -0,0 +1,27 @@
+use ruma::{events::presence::PresenceEvent, presence::PresenceState, OwnedUserId, RoomId, UInt, UserId};
+
+use crate::Result;
+
+pub trait Data: Send + Sync {
+	/// Returns the latest presence event for the given user in the given room.
+	fn get_presence(&self, room_id: &RoomId, user_id: &UserId) -> Result<Option<PresenceEvent>>;
+
+	/// Pings the presence of the given user in the given room, setting the
+	/// specified state.
+	fn ping_presence(&self, user_id: &UserId, new_state: PresenceState) -> Result<()>;
+
+	/// Adds a presence event which will be saved until a new event replaces it.
+	fn set_presence(
+		&self, room_id: &RoomId, user_id: &UserId, presence_state: PresenceState, currently_active: Option<bool>,
+		last_active_ago: Option<UInt>, status_msg: Option<String>,
+	) -> Result<()>;
+
+	/// Removes the presence record for the given user from the database.
+	fn remove_presence(&self, user_id: &UserId) -> Result<()>;
+
+	/// Returns the most recent presence updates that happened after the event
+	/// with id `since`.
+	fn presence_since<'a>(
+		&'a self, room_id: &RoomId, since: u64,
+	) -> Box<dyn Iterator<Item = (OwnedUserId, u64, PresenceEvent)> + 'a>;
+}