bigbuffet-rw/app/soapbox/utils/permissions.ts

import type { RootState } from 'soapbox/store';

export const PERMISSION_CREATE_GROUPS  = 0x0000000000100000;
export const PERMISSION_INVITE_USERS   = 0x0000000000010000;
export const PERMISSION_MANAGE_USERS   = 0x0000000000000400;
export const PERMISSION_MANAGE_REPORTS = 0x0000000000000010;

type Permission = typeof PERMISSION_CREATE_GROUPS | typeof PERMISSION_INVITE_USERS | typeof PERMISSION_MANAGE_USERS | typeof PERMISSION_MANAGE_REPORTS

export const hasPermission = (state: RootState, permission: Permission) => {
  const account = state.accounts_meta.get(state.me as string)!;

  if (!account?.role) return true;

  const permissions = account.getIn(['role', 'permissions']) as number;

  if (!permission) return true;
  return (permissions & permission) === permission;
};