bridgev2/networkinterface: add DeleteOnlyForMe field to message remove events

bridgev2/networkinterface.go

@@ -913,11 +913,15 @@ type RemoteBackfill interface {
 	GetBackfillData(ctx context.Context, portal *Portal) (*FetchMessagesResponse, error)
 }
 
-type RemoteChatDelete interface {
+type RemoteDeleteOnlyForMe interface {
 	RemoteEvent
 	DeleteOnlyForMe() bool
 }
 
+type RemoteChatDelete interface {
+	RemoteDeleteOnlyForMe
+}
+
 type RemoteEventThatMayCreatePortal interface {
 	RemoteEvent
 	ShouldCreatePortal() bool

bridgev2/portal.go

@@ -2370,6 +2370,12 @@ func (portal *Portal) handleRemoteMessageRemove(ctx context.Context, source *Use
 		log.Debug().Msg("Target message not found")
 		return
 	}
+	onlyForMeProvider, ok := evt.(RemoteDeleteOnlyForMe)
+	onlyForMe := ok && onlyForMeProvider.DeleteOnlyForMe()
+	if onlyForMe && portal.Receiver == "" {
+		// TODO check if there are other user logins before deleting
+	}
+
 	intent := portal.GetIntentFor(ctx, evt.GetSender(), source, RemoteEventMessageRemove)
 	if intent == portal.Bridge.Bot && len(targetParts) > 0 {
 		senderIntent, err := portal.getIntentForMXID(ctx, targetParts[0].SenderMXID)

bridgev2/simplevent/message.go

@@ -63,10 +63,18 @@ type MessageRemove struct {
 	EventMeta
 
 	TargetMessage networkid.MessageID
+	OnlyForMe     bool
 }
 
-var _ bridgev2.RemoteMessageRemove = (*MessageRemove)(nil)
+var (
+	_ bridgev2.RemoteMessageRemove   = (*MessageRemove)(nil)
+	_ bridgev2.RemoteDeleteOnlyForMe = (*MessageRemove)(nil)
+)
 
 func (evt *MessageRemove) GetTargetMessage() networkid.MessageID {
 	return evt.TargetMessage
 }
+
+func (evt *MessageRemove) DeleteOnlyForMe() bool {
+	return evt.OnlyForMe
+}