/// <summary>
/// Returns a collection of portal ID's to reindex if it was requested since last indexing
/// </summary>
/// <param name="startDate"></param>
/// <returns></returns>
public IEnumerable <int> GetPortalsToReindex(DateTime startDate)
{
var portals2Reindex = new PortalController().GetPortals().Cast <PortalInfo>()
.Where(portal => IsReindexRequested(portal.PortalID, startDate))
.Select(portal => portal.PortalID);
if (IsReindexRequested(-1, startDate))
{
// Include Host Level
portals2Reindex = portals2Reindex.Concat(new[] { -1 });
}
return(portals2Reindex.ToArray());
}