Display rooms list

matrixgw_frontend/src/api/matrix/MatrixApiRoom.ts

@@ -1,5 +1,7 @@
 import { APIClient } from "../ApiClient";
+import type { UserInfo } from "../AuthApi";
 import type { MatrixEvent } from "./MatrixApiEvent";
+import type { UsersMap } from "./MatrixApiProfile";
 
 export interface Room {
   id: string;
@@ -12,6 +14,32 @@ export interface Room {
   latest_event?: MatrixEvent;
 }
 
+/**
+ * Find main member of room
+ */
+export function mainRoomMember(user: UserInfo, r: Room): string | undefined {
+  if (r.members.length <= 1) return r.members[0];
+
+  if (r.members.length < 2)
+    return r.members[0] == user.matrix_user_id ? r.members[1] : r.members[0];
+
+  return undefined;
+}
+
+/**
+ * Find room name
+ */
+export function roomName(user: UserInfo, r: Room, users: UsersMap): string {
+  if (r.name) return r.name;
+
+  const name = r.members
+    .filter((m) => m !== user.matrix_user_id)
+    .map((m) => users.get(m)?.display_name ?? m)
+    .join(",");
+
+  return name === "" ? "Empty room" : name;
+}
+
 export class MatrixApiRoom {
   /**
    * Get the list of joined rooms