RSServer get

gistfile1.m

+ (void)get {
    
    [RSServer get:nil completionBlock:^(CKResult *result) {
        
        NSLog(@"server get response code %i: %@", result.responseCode, [[NSString alloc] initWithData:result.responseBody encoding:NSUTF8StringEncoding]);        
        
        if ([result isSuccess]) {
        
            // We should remove servers that didn't come back in the results.
            // To do this, we need to find the complement to the result set and
            // the set of all servers currently stored in Core Data.

            NSArray *allServers = [RSServer findWithPredicate:[self predicate]];

            NSMutableSet *complementSet = [NSMutableSet setWithArray:allServers];
            NSMutableSet *intersectionSet = [NSMutableSet setWithArray:allServers];
            NSMutableSet *resultsSet = [NSMutableSet setWithArray:result.objects];
            
            [intersectionSet intersectSet:resultsSet];
            [complementSet minusSet:intersectionSet];
                    
            [RSServer removeAllInSet:complementSet];
            [RSServer save];
            
        } else if (result.responseCode == 401) {
            
            // the auth token has expired.  reauthenticate and try this request again
            if ([[RSAccount activeAccount] authenticate]) {
                [self get];
            }
            
        }
        
    } errorBlock:^(CKResult *result) {
        
        NSLog(@"error: %@", [result.error description]);
        
    }];
    
}