Account_logMerge

	public static void logMerge(Account[] AccountOld){
		List<Merge_Audit__c> audit = new List<Merge_Audit__c>();
		List<Account> mergeAccounts = new List<Account>();
		Set<String> winnerIds = new Set<String>();
		Map<String,String> idMap = new Map<String,String>();
		Map<String,String> nameMap = new Map<String,String>();
		for(Account a : AccountOld){
			if(String.isNotBlank(a.MasterRecordId)){
				winnerIds.add(a.MasterRecordId);
				mergeAccounts.add(a);
			}
		}
		List<Account> accs = new List<Account>([Select Id, WG_Account_ID__c, Name from Account Where Id in :winnerIds]);
		for(Account a : accs){
			idMap.put(a.Id, a.WG_Account_ID__c);
			nameMap.put(a.Id, a.Name);
		}
		if(!mergeAccounts.isEmpty()){
			for(Account a : AccountOld){
				String jsonString = JSON.serializePretty(a);
				String winnerId = idMap.get(a.MasterRecordId);
				String loserId = a.WG_Account_ID__c;
				Merge_Audit__c m = Utilities.createMergeAudit(a.MasterRecordId,a.Id,winnerId,loserId,'Account',jsonString);
				m.Winner_Account__c = a.MasterRecordId;
				m.Winning_Name__c = nameMap.get(a.MasterRecordId);
                m.Losing_Name__c = a.Name;
				audit.add(m);
			}
		}
		if(!audit.isEmpty()){
			insert audit;
		}
	}