Fix daily-co#7: Add idType param to useParticipantIds

See daily-co#7 for discussion.

src/hooks/useParticipantIds.ts

@@ -34,6 +34,7 @@ type SortParticipants =
  | 'user_id'
  | 'user_name'
  | SortParticipantsFunction;
+type IdType = 'user' | 'session';
 
 const defaultFilter: FilterParticipants = Boolean;
 const defaultSort: SortParticipants = () => 0;
@@ -45,10 +46,11 @@ interface UseParticipantIdsArgs {
  onParticipantLeft?(ev: DailyEventObjectParticipantLeft): void;
  onParticipantUpdated?(ev: DailyEventObjectParticipant): void;
  sort?: SortParticipants;
+ idType?: IdType;
 }
 
 /**
- * Returns a list of participant ids (= session_id).
+ * Returns a list of participant ids (default = session_id).
  * The list can optionally be filtered and sorted, using the filter and sort options.
  */
 export const useParticipantIds = (
@@ -59,6 +61,7 @@ export const useParticipantIds = (
  onParticipantLeft,
  onParticipantUpdated,
  sort = defaultSort,
+ idType = 'session',
  }: UseParticipantIdsArgs = {
  filter: defaultFilter,
  sort: defaultSort,
@@ -121,13 +124,14 @@ export const useParticipantIds = (
  return sortFn;
  }, [sort]);
 
+ const idKey = idType === 'user' ? 'user_id' : 'session_id';
  const sortedIds = useMemo(() => {
  return allParticipants
  .filter(filterFn)
  .sort(sortFn)
- .map((p) => p.session_id)
+ .map((p) => p[idKey])
  .filter(Boolean);
- }, [allParticipants, filterFn, sortFn]);
+ }, [allParticipants, filterFn, sortFn, idKey]);
 
  useThrottledDailyEvent(
  [