Rewrite chat room mentions for federation.

clientsession_test.go

@@ -363,6 +363,10 @@ func TestFeatureChatRelayFederation(t *testing.T) {
 						"mention-id": "federated_user/" + hello2.Hello.UserId + "@" + getCloudUrl(server2.URL),
 						"server":     server2.URL,
 					},
+					"mention-call": {
+						"type": "call",
+						"id":   roomId,
+					},
 				},
 			}
 			federatedChatComment := map[string]any{
@@ -390,6 +394,10 @@ func TestFeatureChatRelayFederation(t *testing.T) {
 						"name":       "User 2",
 						"mention-id": "federated_user/" + hello2.Hello.UserId + "@" + getCloudUrl(server2.URL),
 					},
+					"mention-call": {
+						"type": "call",
+						"id":   federatedRoomId,
+					},
 				},
 			}
 			message := api.StringMap{

federation.go

@@ -648,20 +648,30 @@ func (c *FederationClient) updateComment(comment api.StringMap, localCloudUrl st
 				continue
 			}
 
-			if ptype, found := api.GetStringMapString[string](param, "type"); found && ptype == "user" {
-				if server, found := api.GetStringMapString[string](param, "server"); found && server == localUrl {
-					delete(param, "server")
-					params[key] = param
-					changed = true
-					continue
-				}
+			if ptype, found := api.GetStringMapString[string](param, "type"); found {
+				switch ptype {
+				case "user":
+					if server, found := api.GetStringMapString[string](param, "server"); found && server == localUrl {
+						delete(param, "server")
+						params[key] = param
+						changed = true
+						continue
+					}
 
-				if _, found := api.GetStringMapString[string](param, "mention-id"); !found {
-					param["mention-id"] = param["id"]
-					param["server"] = remoteUrl
-					params[key] = param
-					changed = true
-					continue
+					if _, found := api.GetStringMapString[string](param, "mention-id"); !found {
+						param["mention-id"] = param["id"]
+						param["server"] = remoteUrl
+						params[key] = param
+						changed = true
+						continue
+					}
+				case "call":
+					roomId := c.RoomId()
+					remoteRoomId := c.RemoteRoomId()
+					// TODO: Should we also rewrite the room avatar url in "icon-url"?
+					if c.changeRoomId.Load() && param["id"] == remoteRoomId {
+						param["id"] = roomId
+					}
 				}
 			}
 		}