Fix room creation

The room alias is not part of the spec. Synapse returns it anyway,
but it's not part of the js-sdk types. We don't really need the
server to tell us what the alias is, so just generate it locally
instead.

src/matrix-utils.ts

@@ -108,7 +108,7 @@ export async function initClient(
   return client;
 }
 
-export function roomAliasFromRoomName(roomName: string): string {
+export function roomAliasLocalpartFromRoomName(roomName: string): string {
   return roomName
     .trim()
     .replace(/\s/g, "-")
@@ -116,6 +116,13 @@ export function roomAliasFromRoomName(roomName: string): string {
     .toLowerCase();
 }
 
+export function fullAliasFromRoomName(
+  roomName: string,
+  client: MatrixClient
+): string {
+  return `#${roomAliasLocalpartFromRoomName(roomName)}:${client.getDomain()}`;
+}
+
 export function roomNameFromRoomId(roomId: string): string {
   return roomId
     .match(/([^:]+):.*$/)[1]
@@ -151,7 +158,7 @@ export async function createRoom(
     visibility: Visibility.Private,
     preset: Preset.PublicChat,
     name,
-    room_alias_name: roomAliasFromRoomName(name),
+    room_alias_name: roomAliasLocalpartFromRoomName(name),
     power_level_content_override: {
       invite: 100,
       kick: 100,
@@ -177,7 +184,7 @@ export async function createRoom(
     },
   });
 
-  console.log({ isPtt });
+  console.log(`Creating ${isPtt ? "PTT" : "video"} group call room`);
 
   await client.createGroupCall(
     createRoomResult.room_id,
@@ -186,7 +193,7 @@ export async function createRoom(
     GroupCallIntent.Prompt
   );
 
-  return createRoomResult.room_id;
+  return fullAliasFromRoomName(name, client);
 }
 
 export function getRoomUrl(roomId: string): string {