lead criteria change

public class leadDomainChange {

    public void relateNewAccount(){
        //create sets to hold data we need for querying matching accounts
        Set<String> domains = new Set<String>();
        Set<String> ldNames = new Set<String>();
        Set<String> ldWebs = new Set<String>();
        List<Lead> updatelds = new List<Lead>();
        //maps for holding accounts we can reference with different keys
        Map<String, Account> accDomMap = new Map<String, Account>();
        Map<String, Contact> conDomMap = new Map<String,Contact>();
        Map<String, Account> accWebMap = new Map<String, Account>();
        Map<String, Contact> conWebMap = new Map<String, Contact>();
        Map<String,Account> accNameMap = new Map<String, Account>();
        //set with user role names for sales users
        Set<String> salesRoles = new Set<String>{'Large Accounts', 'Strategic Accounts', 'SDR', 'Services', 'CSM'};
        //set to hold all personal domains to limit account query results
        Set<String> personalDomains = new Set<String>();
        //loop through all personal domains to populate set
        for(Personal_domain__c pd :[SELECT domain_name__c FROM Personal_Domain__c]){
            personalDomains.add(pd.domain_Name__c);
        }
        //loop through leads to populate data for querying relevant accounts
        for(Lead ld : (List<Lead>)trigger.new){
            Map<Id, Lead> oldMap = (Map<Id,Lead>)trigger.oldMap;
            domains.add(ld.domainName__c);
            ldNames.add(ld.company);
            ldWebs.add(ld.website);
            if(oldMap.get(ld.id).domainName__c != ld.domainName__c){
                updateLds.add(ld);
            }
        }
        //Gather all accounts that have domain names we pulled from the leads.  This is how we will match records
        //Will iterate over a list and store values in a map
        for(Account acc : [SELECT id, name, owner.name, numberOfEmployees, billingState, strategic_account__c, target_account__c, domainName__c, website, master_record__c, owner.UserRole.Name
                           FROM Account WHERE ((domainName__c IN :domains AND domainName__c !=null) OR (website IN :ldWebs AND website != null) OR name IN :ldNames) AND domainName__c NOT IN :personalDomains AND domainName__c != 'gmail.com' AND domainName__c != 'yahoo.com'
                           ORDER BY LastActivityDate DESC LIMIT 50000]){
                               system.debug('Account Name: '+acc.name+'.  Account Domain: '+acc.domainName__c+'.  Account website: '+acc.website+'.  Master Record? '+acc.master_record__c);
                               //if domainName isn't null, populate domain key map
                               if(acc.domainName__c != null){
                                   accDomMap.put(acc.domainName__c, acc);
                               }
                               //if website isn't null populate website key map
                               if(acc.website != null){
                                   system.debug('Website: '+acc.website);
                                   accWebMap.put(acc.website, acc);
                               }
                               //Name is a system required field so we always populate the name key map
                               accNameMap.put(acc.name, acc);
                           }
        for(Lead ld : updateLds){
            system.debug('Lead Company: '+ld.company+'.  Lead Domain: '+ld.domainName__c+'.  Lead website: '+ld.website);

            //preset each check box to true and then flag false if match is found
            ld.no_matches_found_sales_queue__c = true;
            //Make sure we have accounts to look at
            //if not break the loop
            if(accDomMap.isEmpty() && accNameMap.isEmpty() && accWebMap.isEmpty()){
               break;
            }
            //first things first we check if there is an exact domain match and exact company match, and see if we have a master record...
            if(accDomMap.containsKey(ld.domainName__c) && accNameMap.containsKey(ld.company) && accDomMap.get(ld.domainName__c).master_record__c == true && accDomMap.get(ld.domainName__c).id == accNameMap.get(ld.company).id){
                //relate account when criteria are met
                ld.related_account__c = accDomMap.get(ld.domainName__c).id;
            }else if(accWebMap.containsKey(ld.website) && accNameMap.containsKey(ld.company) && accWebMap.get(ld.website).id == accNameMap.get(ld.company).id && accNameMap.get(ld.company).master_record__c == true){
                ld.related_account__c = accNameMap.get(ld.company).id;
            }else if(accDomMap.containsKey(ld.domainName__c) && accDomMap.get(ld.domainName__c).master_record__c == true){
                ld.related_account__c = accDomMap.get(ld.domainName__c).id;
            }else If(accNameMap.containsKey(ld.company) && accNameMap.get(ld.company).master_record__c == true){
                ld.related_account__c = accNameMap.get(ld.company).id;
            }else if(accWebMap.containsKey(ld.website) && accWebMap.get(ld.website).master_record__c == true){
                ld.related_account__c = accWebMap.get(ld.website).id;
            }else if(accDomMap.containsKey(ld.domainName__c) && accWebMap.containsKey(ld.website) && accNameMap.containsKey(ld.company) && accDomMap.get(ld.domainName__c).id == accNameMap.get(ld.company).id && accDomMap.get(ld.domainName__c).id == accWebMap.get(ld.website).id){
                ld.related_account__c = accWebMap.get(ld.website).id;
            }else if(accDomMap.containsKey(ld.domainName__c) && accNameMap.containsKey(ld.company) && accDomMap.get(ld.domainName__c).id == accNameMap.get(ld.company).id){
                ld.related_account__c = accNameMap.get(ld.company).id;
            }else if(accWebMap.containsKey(ld.website) && accNameMap.containsKey(ld.company) && accWebMap.get(ld.website).id == accNameMap.get(ld.company).id){
                ld.related_account__c = accNameMap.get(ld.company).id;
            }else if(accDomMap.containsKey(ld.domainName__c) && accDomMap.get(ld.domainName__c).billingState != null && accDomMap.get(ld.domainName__c).numberOfEmployees != null){
                ld.related_account__c = accDomMap.get(ld.domainName__c).id;
            }else if(accNameMap.containsKey(ld.company) && accNameMap.get(ld.company).billingState != null && accNameMap.get(ld.company).numberOfEmployees != null){
                ld.related_account__c = accNameMap.get(ld.company).id;
            }else if(accWebMap.containsKey(ld.website) && accNameMap.containsKey(ld.company) && accWebMap.get(ld.website).id == accNameMap.get(ld.company).id){
                ld.related_account__c = accNameMap.get(ld.company).id;
            }else if(accDomMap.containsKey(ld.domainName__c)){
                ld.related_account__c = accDomMap.get(ld.domainName__c).id;
            }
        }
    }
}