Clone With Opportunity Product

CloneOpportunityWithProducts.cls

public with sharing class CloneOpportunityWithProducts{
    @AuraEnabled
    public static string cloneOpportunity(Id opportunityId) {
       string query='select ';
        string queryOLI='select ';
        List<Opportunitylineitem> lstOLI = new List<Opportunitylineitem>();
        List<Opportunitylineitem> lstOLIToInsert = new List<Opportunitylineitem>();
        Schema.DescribeSObjectResult r = Opportunity.sObjectType.getDescribe();
        List<String> apiNamesOpportunity =  new list<String>();
        for(string apiName : r.fields.getMap().keySet()){
           apiNamesOpportunity.add(apiName);
        }
        for(string objstr:apiNamesOpportunity){
            query+=objstr+',';
        }
        query=query.removeend(',');
        query = query+' from opportunity where id=:opportunityid';
        system.debug('QUERY-->'+query);
        Opportunity op1 = Database.query(query);
        Opportunity op2 = op1.clone(false);
        op2.name = op1.name+' - Clone';
        insert op2;
        system.debug('ID-->'+op2); 
        Schema.DescribeSObjectResult roli = OpportunityLineItem.sObjectType.getDescribe();
        List<String> apiNamesOLI =  new list<String>();
        for(string apiName : roli.fields.getMap().keySet()){
           apiNamesOLI.add(apiName);
        }
        for(string objstr:apiNamesOLI){
            if(objstr!='totalprice')
                queryOLI+=objstr+',';
        }
        queryOLI=queryOLI.removeend(',');
        queryOLI = queryOLI+' from OpportunityLineItem where opportunityid=:opportunityid';
        lstOLI = Database.query(queryOLI);
        if(lstOLI!=null && lstOLI.size()>0){
            for(OpportunityLineItem objOLI:lstOLI){
            opportunitylineitem objNewOLI = objOLI.clone(false);
            objNewOLI.opportunityid = op2.id;
            lstOLIToInsert.add(objNewOLI);
        }
        insert lstOLIToInsert;
        }
                return op2.id;
            }

}

CloneWithProducts.cmp

<aura:component controller="CloneOpportunityWithProducts" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,force:lightningQuickAction" access="global" >
	<aura:handler name="init" value="{!this}" action="{!c.doInit}" />
      <lightning:spinner variant="brand"  size="medium" />
</aura:component>

CloneWithProducts.js

({
	doInit : function(component, event, helper) {
		// Prepare the action to load case record
        var action = component.get("c.cloneOpportunity");
        action.setParams({"opportunityId": component.get("v.recordId")});

        // Configure response handler
        action.setCallback(this, function(response) {
            var state = response.getState();
            if(component.isValid() && state === "SUCCESS") {
                 // Prepare a toast UI message
                    
                    var resultsToast = $A.get("e.force:showToast");
                    resultsToast.setParams({
                        "type": "success",
                        "message": "Opportunity has been successfully cloned with Opportunity Products."
                    });

                    // Update the UI: close panel, show toast, refresh case page
                    $A.get("e.force:closeQuickAction").fire();
                    resultsToast.fire();
                    var sobjectEvent=$A.get("e.force:navigateToSObject");
                    sobjectEvent.setParams({
                         
                        "recordId": response.getReturnValue()
             
                    });
        sobjectEvent.fire();
                
            } else {
                console.log('Problem getting Case, response state: ' + state);
            }
        });
        $A.enqueueAction(action);
    }
	
})