Hi All,
my need is that any time any chatter post is going on case Case Team Members should also receive it.
like whenever Any Chatter post is going on Case than the Case team member is also recieve that post?
my helper class is given below:-
public  without sharing class CaseFeedTriggerHelper {
    public static List<FeedItem> newCasesFeed = new List<FeedItem>();
    public static List<FeedItem> oldCasesFeed = new List<FeedItem>();
    public static Map<Id, FeedItem> newMapCasesFeed = new Map<Id, FeedItem>();
    public static Map<Id, FeedItem> oldMapCasesFeed = new Map<Id, FeedItem>(); 
    
    //Method to add case team members in case record followers.
    public static void AlertToCaseTeamMembers(){
        //set to retrive All cases from case feed
        Set<Id> caseIds = new Set<Id>();
        // link feedItem to Case
        for( FeedItem fi : newCasesFeed ){
            if( fi.ParentId != null && String.valueOf(fi.ParentId).startsWith('500') ){
                caseIds.add(fi.ParentId);
            }
        }
        
        //In case there was a feed insertion on an object other than case
        if (caseIds.size() > 0) { 
            //Map to retrive case team member and caseids
            Map<Id, Id> caseIdToCaseMemberId = new Map<Id, Id>();
            //Because there can be more than one team member
            List<EntitySubscription> listEntitySub = new List<EntitySubscription>();
             // add CaseTeamMembers to Map
            for( CaseTeamMember ctm : [ SELECT id, ParentId, 
                                       MemberId
                                       FROM CaseTeamMember 
                                       WHERE Parentid IN : caseIds
                                      ]){
                   caseIdToCaseMemberId.put(ctm.ParentId , ctm.MemberId);                        
            }
            //check if map has value or not
            if(caseIdToCaseMemberId.size() > 0){
                //create a entitySubscription for case  
                for ( Id caseIdsFromMap : caseIdToCaseMemberId.keySet() ) {
                    EntitySubscription entitySub = new EntitySubscription();
                    entitySub.ParentId = caseIdsFromMap;
                    entitySub.SubscriberId = caseIdToCaseMemberId.get(caseIdsFromMap);
                    listEntitySub.add(entitySub);
                }
            }
            //check if list of EntitySubscription has value
            if (listEntitySub.size() > 0) {
                insert listEntitySub;
            }
        }
    }
}
Any suggestion?