opportunity more than 30 days via account

// ? 2. Write a trigger on the Account when the Account is updated check all opportunities related to the account. Update all Opportunities Stage to close lost if an opportunity created date is greater than 30 days from today and stage not equal to close won.



Trigger oppUpdateOnAcc on Account (After Update){

  switch on Trigger.operationType{
    when AFTER_INSERT{
      oppUpdateOnAccHelper.checkOppStage(Trigger.new);
    }
  }
}

public with sharing oppUpdateOnAccHelper{
  public static void checkOppStage(List<Account> accList){
  Set<Account> aCheck = new Set<Account>();
  if(accList != null){
    for(Account a : accList){
    aCheck.add(a.Id);
    }
    //calc data--
    DateTime LastDay = system.now() + 30;
    List<opportunity> oppUpdate = new List<opportunity>();
    List<Opportunity> oppLst = [SELECT id, name , stagename, ammount , description from opportunity ];
    if(oppLst.size() > 0){
      for(Opportunity opp : oppLst){
        if( opp.createdDate > LastDay && opp.stagename == 'Close Wom'){
        opp.Stagename == 'Close Lost';
        opp.CloseDate = system.now();
        opp.description = 'closed by Trigger oppUpdateOnAcc';
        oppUpdate.add(opp);
        }

      }
      if(oppUpdate.size() > 0){
      INSERT oppUpdate;
      }
    }

  }
  }
}