Abstract Pdu filter matching into trait Event.

Abstract Pdu unsigned accessors into trait Event.

Abstract Pdu relation related into trait Event.

Abstract PDU content into trait Event.

Move event_id utils from pdu to event.

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

src/core/matrix/event/id.rs

@@ -0,0 +1,31 @@
+use ruma::{CanonicalJsonObject, OwnedEventId, RoomVersionId};
+use serde_json::value::RawValue as RawJsonValue;
+
+use crate::{Result, err};
+
+/// Generates a correct eventId for the incoming pdu.
+///
+/// Returns a tuple of the new `EventId` and the PDU as a `BTreeMap<String,
+/// CanonicalJsonValue>`.
+pub fn gen_event_id_canonical_json(
+	pdu: &RawJsonValue,
+	room_version_id: &RoomVersionId,
+) -> Result<(OwnedEventId, CanonicalJsonObject)> {
+	let value: CanonicalJsonObject = serde_json::from_str(pdu.get())
+		.map_err(|e| err!(BadServerResponse(warn!("Error parsing incoming event: {e:?}"))))?;
+
+	let event_id = gen_event_id(&value, room_version_id)?;
+
+	Ok((event_id, value))
+}
+
+/// Generates a correct eventId for the incoming pdu.
+pub fn gen_event_id(
+	value: &CanonicalJsonObject,
+	room_version_id: &RoomVersionId,
+) -> Result<OwnedEventId> {
+	let reference_hash = ruma::signatures::reference_hash(value, room_version_id)?;
+	let event_id: OwnedEventId = format!("${reference_hash}").try_into()?;
+
+	Ok(event_id)
+}