MongoDB Add User Client Source

mongorc.js

// Remove Duplicates
function removeDuplicates(array) {
    return array.sort().filter((a, b) => array.indexOf(a) === b)
};

// Add CIDR Address on User
addUserClientSource = function(user,dbname,cidr) {
    var nsAdmin = "admin." + user;
    var res = db.system.users.aggregate([
        {$match:{"_id" : nsAdmin, "user" : user, "db" : dbname}},
        {$project:{_id:0,"authenticationRestrictions.clientSource":1}},
        {$addFields:{
            clientSource:{
                $reduce:{
                    input:"$authenticationRestrictions.clientSource",
                    initialValue:[],
                    in: { $concatArrays : ["$$value", "$$this"] }
                }
            }
        }},
        {$project:{"authenticationRestrictions":0}}
    ])

    if ( ! res._batch ) {
        printStackTrace();
        throw "User not found: " + tojson(res);
    }
    
    var ipList = res._batch[0];
    if(!ipList.clientSource){
        ipList.clientSource=[cidr]
    } else {
        ipList.clientSource.push(cidr)
    } 

    var uniqList = removeDuplicates(ipList.clientSource);

    //Remove
    //print( "ipList " + JSON.stringify( ipList ) )
    //isRemove = isRemove ? true : false;
    //uniqList = uniqList.filter(item => item !== cidr)

    db.updateUser( user,{authenticationRestrictions: [ {clientSource:uniqList} ]})

    var results = db.getSiblingDB("admin").runCommand( { usersInfo:  user, showPrivileges: true, showAuthenticationRestrictions: true } ).users[0].authenticationRestrictions
    print( user + " Add " + JSON.stringify( results ) )

}