FetchGroupsAndUsers.cls

global class FetchGroupsAndUsers implements Schedulable, Database.Batchable<DeskResource>, Database.AllowsCallouts
{
    public static String CRON_EXPRESSION = '0 0 0 * * ? *';
    
    global static final DeskClient DESK_CLIENT = new DeskClient(new Map<String, String>{
        'username' => 'support@example.com',
        'password' => 'somepassword',
        'subdomain' => 'devel'
    });
    
    global Iterable<DeskResource> start(Database.BatchableContext ctx)
    {
        return DESK_CLIENT.getResource('groups').getEntries();
    }
    
    global void execute(Database.BatchableContext ctx, List<DeskResource> scope)
    {
        Map<String, User> userMap = new Map<String, User>();
        for (User u : [Select Email From User]) {
            userMap.put(u.Email, u);
        }
        
        List<User> users = new List<User>();
        for (DeskResource res : scope) {
            for (DeskResource usr : res.getResource('users').getEntries()) {
                User u = userMap.get((String)usr.get('email'));
                if (u != null /* && (u.DeskGroupId__c != res.getHref() || u.DeskUserId__c != usr.getHref()) */){
                    /*
		    u.DeskGroupId__c = g.getHref();
		    u.DeskUserId__c = usr.getHref();
		    users.add(u);
		    */
                }
            }
        }
        
        if (users.size() > 0) update(users);
    }
    
    global void execute(SchedulableContext ctx)
    {
        FetchGroupsAndUsers batch = new FetchGroupsAndUsers();
        // set batch size to five so we don't have problems with callouts
        Database.executeBatch(batch, 5);
    }
    
    global void finish(Database.BatchableContext ctx)
    {}
    
    global String schedule() { return schedule('fetchGroupsAndUsers'); }
    global String schedule(String jobName)
    {
        return System.schedule(jobName, FetchGroupsAndUsers.CRON_EXPRESSION, new FetchGroupsAndUsers());
    }
    
    global static void updateDeskCase(Integer deskCaseNumber, String deskGroupId, String deskUserId)
    { 
        updateDeskCase(String.valueOf(deskCaseNumber), deskGroupId, deskUserId);
    }
    
    @future(callout=true)
    global static void updateDeskCase(String deskCaseNumber, String deskGroupId, String deskUserId)
    {
        DESK_CLIENT.getResource('users').find(deskCaseNumber).patch(new Map<String, Object>{
            '_links' => new Map<String, Object>{
                'assigned_user' => new Map<String, Object>{
                    'href' => deskUserId
                },
                'assigned_group' => new Map<String, Object>{
                    'href' => deskGroupId
                }
            }
        });
    }
}