trigger Create_followup on Opportunity (before update, after insert) 
{
    List<Pricebook2> standardBook = [SELECT Id FROM Pricebook2 WHERE Name = :'Ambition'];//Create an instance of the standard pricebook
    
    if(Trigger.isUpdate)
	{
        List<Opportunity> listOppor = new List<Opportunity>();
		Set<String> setOppId = new Set<String>();
		
		for(Opportunity o: Trigger.new)
		{
			setOppId.add(o.id);
		}
		List<Opportunity> lstOpportunity = [select id,StageName,Stage_Change__c,CloseDate,account.Name ,Name,,Renewal_Date__c,Probability,
											Parent_Opportunity__c,Pricebook2Id from lstOpportunity from Opportunity where id in :setOppId
											];
		
        for (Opportunity o: lstOpportunity)
		{
            if (o.StageName == 'Closed Won' && o.Stage_Change__c == false){

                Opportunity oppNew = o.clone();
                oppNew.Name = o.account.Name  + ' - Annual ' + o.CloseDate.year();
                
                if(o.Renewal_Date__c != null){
                oppNew.Renewal_Date__c = o.Renewal_Date__c.addYears(1);
                oppNew.CloseDate = o.Renewal_Date__c;}
                
                oppNew.StageName = 'Discovery';
                oppNew.Probability = 25;
                oppNew.Parent_Opportunity__c = o.Id;
                
                
                oppNew.Pricebook2Id = standardBook[0].Id;//associate the standard pricebook with this opportunity
                
                oppNew.Is_Clone__c = true;
                listOppor.add(oppNew);
                o.Stage_Change__c = true;
                
            }

        }//end of for loop

        if(listOppor.size() > 0){
            insert listOppor;
            
            List<OpportunityContactRole> ocrList = [SELECT OpportunityId, ContactId, Role FROM OpportunityContactRole WHERE OpportunityId IN :Trigger.New];
            List<OpportunityContactRole> newOcrList = new List<OpportunityContactRole>();

            if(!ocrList.isEmpty()) {
                Map<Id, Id> oldOpNewOpIdMap = new Map<Id, Id>();
                for(Opportunity opNew : listOppor) {
                    oldOpNewOpIdMap.put(opNew.Parent_Opportunity__c, opNew.Id);
                }   
                for(OpportunityContactRole ocr : ocrList) {
                    OpportunityContactRole newOcr = new OpportunityContactRole();
                    newOcr.ContactId = ocr.ContactId;
                    newOcr.Role = ocr.Role;
                    newOcr.OpportunityId = oldOpNewOpIdMap.get(ocr.OpportunityId);
                    newOcrList.add(newOcr);
                }
                insert newOcrList;
            }
            
          List<OpportunityLineItem> oliList = [SELECT OpportunityId, PricebookEntryId, UnitPrice, Quantity, Duration__c, Payment_Terms__c, Discount FROM OpportunityLineItem WHERE OpportunityId IN :Trigger.New];
          List<OpportunityLineItem> newoliList = new List<OpportunityLineItem>();
          
          if(!oliList.isEmpty()) {
                Map<Id, Id> oldOpNewOpIdMap2 = new Map<Id, Id>();
                for(Opportunity opNew : listOppor) {
                    oldOpNewOpIdMap2.put(opNew.Parent_Opportunity__c, opNew.Id);
                }   
                for(OpportunityLineItem oli : oliList) {
                    OpportunityLineItem newOli = new OpportunityLineItem();
                    newOli.UnitPrice = oli.UnitPrice;
                    
                    newOli.PricebookEntryId = oli.PricebookEntryId;
                    newOli.Quantity = oli.Quantity;
                    newOli.Duration__c = 12;
                   
                    newOli.Payment_Terms__c = oli.Payment_Terms__c;
                    newOli.Discount = oli.Discount;
                    newOli.OpportunityId = oldOpNewOpIdMap2.get(oli.OpportunityId);
                    
                    
                    newoliList.add(newOli);
                }
                insert newoliList;
            }

            
        }
        
        

    }

    if(trigger.isInsert){
        try{
            //OpportunityLineItem[] lines = new OpportunityLineItem[0];
            //PricebookEntry entry = [SELECT Id, UnitPrice FROM PricebookEntry WHERE Pricebook2Id = :standardBook.Id AND Product2.ProductCode = 'ENTERPRISE_ANNUAL_UPFRONT'];
            List<Event> eventList = new List<Event>();
            //List<Note> noteList = new List<Note>();


            for(Opportunity o: Trigger.new){
                if(o.Is_Clone__c == true){

                    //noteList.add(new Note(ParentId=o.id,Title='Matt is the Apex_God',Body='Matt is the Apex_God',isPrivate=false));

                    //lines.add(new OpportunityLineItem(PricebookEntryId=entry.Id, OpportunityId=o.Id, UnitPrice=entry.UnitPrice, Quantity=1));

                    if(o.Renewal_Date__c != null){

                        DateTime myDateTime = o.Renewal_Date__c.addMonths(-10);
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime,subject='Account Management Follow-Up', EndDateTime=myDateTime, IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(2),subject='Account Management Follow-Up', EndDateTime=myDateTime.addMonths(2), IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(4),subject='Account Management Follow-Up', EndDateTime=myDateTime.addMonths(4), IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(6),subject='Account Management Follow-Up', EndDateTime=myDateTime.addMonths(6), IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(8),subject='Account Management Follow-Up', EndDateTime=myDateTime.addMonths(8), IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(10),subject='Account Management Follow-Up', EndDateTime=myDateTime.addMonths(10), IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(10),subject='Renewal',EndDateTime=myDateTime.addMonths(10), IsAllDayEvent=true));
                        eventList.add(new Event(whatid=o.id,startdatetime=myDateTime.addMonths(9),subject='Sales Contract Follow-Up',EndDateTime=myDateTime.addMonths(9), IsAllDayEvent=true));

                    }//end of if

                }
            }
            //insert lines;
            insert eventList;
            //insert noteList;

        }
        catch(Exception e){

        }
    }
}