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diff --git a/lib/utils/role-utils.js b/lib/utils/role-utils.js
--- a/lib/utils/role-utils.js
+++ b/lib/utils/role-utils.js
@@ -1,8 +1,11 @@
// @flow
+import _groupBy from 'lodash/fp/groupBy.js';
+import _toPairs from 'lodash/fp/toPairs.js';
import * as React from 'react';
import { useSelector } from './redux-utils.js';
+import { useSortedENSResolvedUsers } from '../hooks/ens-cache.js';
import { threadInfoSelector } from '../selectors/thread-selectors.js';
import type {
RelativeMemberInfo,
@@ -93,6 +96,36 @@
return roleMap;
}
+function useMembersGroupedByRole(
+ threadInfo: ThreadInfo,
+): $ReadOnlyMap<string, $ReadOnlyArray<RelativeMemberInfo>> {
+ const { members } = threadInfo;
+ const sortedENSResolvedMembers = useSortedENSResolvedUsers(members);
+
+ const roles = useRolesFromCommunityThreadInfo(
+ threadInfo,
+ sortedENSResolvedMembers,
+ );
+
+ const groupByRoleName = React.useMemo(
+ () =>
+ _groupBy(member => roles.get(member.id)?.name)(sortedENSResolvedMembers),
+ [sortedENSResolvedMembers, roles],
+ );
+
+ const membersGroupedByRoleMap = React.useMemo(() => {
+ const map: Map<string, $ReadOnlyArray<RelativeMemberInfo>> = new Map();
+
+ _toPairs(groupByRoleName)
+ .sort((a, b) => a[0].localeCompare(b[0]))
+ .forEach(([roleName, memberInfos]) => map.set(roleName, memberInfos));
+
+ return map;
+ }, [groupByRoleName]);
+
+ return membersGroupedByRoleMap;
+}
+
function toggleUserSurfacedPermission(
rolePermissions: ThreadRolePermissionsBlob,
userSurfacedPermission: UserSurfacedPermission,
@@ -124,4 +157,5 @@
useRoleDeletableAndEditableStatus,
useRolesFromCommunityThreadInfo,
toggleUserSurfacedPermission,
+ useMembersGroupedByRole,
};

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