show room id for each room in output and list given aliases separately

main.go

@@ -73,7 +73,8 @@ func main() {
 		fclient.WithTimeout(config.HomeserverVersionInfoTimeout),
 	)
 
-	givenRoomsByRoomID := make(map[id.RoomID]string)
+	roomIDSet := make(map[id.RoomID]bool)
+	aliasSetByRoomID := make(map[id.RoomID](map[string]bool))
 	for _, room := range config.Rooms {
 		// Check, if given room is an alias and try to resolve it into a room id.
 		if strings.HasPrefix(room, "#") {
@@ -81,14 +82,22 @@ func main() {
 			if err != nil {
 				log.Fatal(err)
 			}
-			givenRoomsByRoomID[resolvedAlias.RoomID] = room
+
+			roomIDSet[resolvedAlias.RoomID] = true
+
+			aliasSet, ok := aliasSetByRoomID[resolvedAlias.RoomID]
+			if !ok {
+				aliasSet = make(map[string]bool)
+				aliasSetByRoomID[resolvedAlias.RoomID] = aliasSet
+			}
+			aliasSet[room] = true
 		} else {
-			givenRoomsByRoomID[id.RoomID(room)] = room
+			roomIDSet[id.RoomID(room)] = true
 		}
 	}
 
-	roomIDs := make([]id.RoomID, 0, len(givenRoomsByRoomID))
-	for roomID := range givenRoomsByRoomID {
+	roomIDs := make([]id.RoomID, 0, len(roomIDSet))
+	for roomID := range roomIDSet {
 		roomIDs = append(roomIDs, roomID)
 	}
 
@@ -96,7 +105,14 @@ func main() {
 
 	for roomID, roomInfo := range roomInfoTree {
 		fmt.Println("Room:")
-		fmt.Printf("  %s -> %d\n", givenRoomsByRoomID[roomID], roomInfo.MemberCount)
+		fmt.Printf("  %s -> %d\n", roomID, roomInfo.MemberCount)
+		aliasSet, ok := aliasSetByRoomID[roomID]
+		if ok {
+			fmt.Println("Given Aliases:")
+			for alias := range aliasSet {
+				fmt.Printf("  %s\n", alias)
+			}
+		}
 
 		fmt.Println("Version Support:")