Using a Business Rule add a user to a group when a certain notification is added to their device

addUserToGroupForNotification

//When a user addes a certain notification to thier device, add them to a group (Group paging)
//Business Rule -- ServiceNow
//Name:addUserToGroupForNotification
//Table: Notification Messages [cmn_notif_message]
//Order: 500, When: async, Priority: 500, Insert
//If "P1/P2 All Manager Notify New"(sysevent_email_action).
//-->Then, add user(sys_user) to "IT Managers" group(sys_user_group)(sys_user_grmember)

cm_addUserToGroupForNotification();

function cm_addUserToGroupForNotification(){
    //Lookup Group 'IT Managers'
    var grpItMgr = getSysId('IT Managers', 'sys_user_group');
    
    //Lookup Notification 'P1/P2 All Manager Notify New'
    var notMessage = getSysId('P1/P2 All Manager Notify New', 'sysevent_email_action');
    
    
    if(current.notification == notMessage){
        addToGroup(current.user, grpItMgr);
    }else{
        //gs.log("Notification does not match", 'Chris');
    }
    
    
    function getSysId (itemName,tableName){
        //Todo: add varable incase the 'name' field is not correct
        var gdRec = new GlideRecord(tableName);
        gdRec.addQuery('name', '=', itemName);
        gdRec.query();
        if(gdRec.next()){
            return gdRec.sys_id;
        }else{
            return false;
        }
        
    }
    
    function addToGroup(userSysId,groupSysId){
        var gdRec = new GlideRecord('sys_user_grmember');
        //Check to see if user is already in group
        gdRec.addQuery('user','=', userSysId);
        gdRec.addQuery('group','=', groupSysId);
        gdRec.query();
        if(gdRec.next()){
            //Found it, so don't insert it
            //gs.log("User already in group, skipping...", "Chris");
        }else{
            gdRec.initialize();
            gdRec.group = groupSysId;
            gdRec.user = userSysId;
            gdRec.insert();
        }
    }
}