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global class LeadConversionBatch implements Database.Batchable<sObject> {
    
    List<QueryException> mergeErrors {get; set;}
    
    global Integer numberOfLeadsConvert = 0;
    global Integer numberOfFailures     = 0;

    global Database.QueryLocator start(Database.BatchableContext bc) {
        // collect the batches of records or objects to be passed to execute
         
        // create list of profiles that the lead owner should have
        List<String> profileNames = new List<String> {
            'Boomi-Salesforce Sync',
            'GIA Education User LON',
            'GIA Education User US',
            'GIA G&G User',
            'GIA Integration',
            'GIA Laboratory User US',
            'GIA Management LON',
            'GIA Management US',
            'Marketing User',
            'Marketo-Salesforce Sync',
            'Read Only',
            'Solution Manager',
            'Standard User',
            'System Administrator',
            'US-Business Development',
            'US – Marketing'        
        };
                     
        // get org profile id
        List<Profile> profiles = [SELECT Id, Name 
                                  FROM Profile
                                  WHERE Name IN :profileNames];
        List<String> profileIds = new List<String>();
        
        for(Profile p : profiles) {
            profileIds.add(String.valueOf(p.Id));
        }        

        
        // get all lead owner ids that have appropriate profile
        List<User> owners = [SELECT Id, Name, ProfileId
                             FROM User
                             WHERE ProfileId IN :profileIds];
        
        List<String> ownerIds = new List<String>();
        
        for(User o : owners) {
            ownerIds.add(String.valueOf(o.Id));
        }
        
        // get leads where owner is equal to one of the owners with 
        // the right profile
        // and the lead has not been converted
        return Database.getQueryLocator(
            'SELECT Id, Email, IsConverted, FirstName, LastName, OwnerId, Subscription_AlumConnect__c, Subscription_EQ_Email__c, Subscription_Gems_Gemology_Email__c, Subscription_GIA_Insider__c, Subscription_Products_and_Services__c, Subscription_Retailer_Support__c ' +
            'FROM Lead ' +
            'WHERE OwnerId IN :ownerIds ' +
            'AND IsConverted = false ' +
            'AND Marketo_Sync__c = true'
        );
    }

    global void execute(Database.BatchableContext bc, List<Lead> leads){
        // process each batch of records
        
        List<Integer> results = LeadService.Conversion(leads);
        
       		System.debug('results list' + results);
        	numberOfLeadsConvert = numberOfLeadsConvert + results[0];
        	numberOfFailures = numberOfFailures + results[1];
        
		 
    }    

    global void finish(Database.BatchableContext bc){
        // execute any post-processing operations
      
        // send an email after batch is complete to user
        // who started batch
        AsyncApexJob a = [Select Id, Status, ExtendedStatus, NumberOfErrors, 
                          JobItemsProcessed, TotalJobItems, CreatedBy.Email
                          from AsyncApexJob where Id =:bc.getJobId()];
        
        Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
        String[] toAddresses = new String[] {a.CreatedBy.Email};
        
        mail.setToAddresses(toAddresses);
        mail.setSubject('Match Merge Batch ' + a.Status);
        
        String emailBody = '';
        
        if(mergeErrors != null) {
			emailBody = 'leads converted: ' + numberOfLeadsConvert +
                              '. Failures: ' + numberOfFailures + '.';          
        } else {
            emailBody = 'leads converted: ' + numberOfLeadsConvert +
                              '. Failures: ' + numberOfFailures + '.';
        }
        mail.setPlainTextBody(emailBody);
		Messaging.sendEmail(new Messaging.Email[] { mail });
    }    

}