- (IBAction)buttonPressed:(id)sender
{
    if ([FunctionsHelper isValidEmail:_emailTextField.text useStricterFilter:YES])
    {
        if ([sender isEqual:_enterButton])
        {
            NSPredicate *predicate = [NSPredicate predicateWithFormat:@"email == %@ AND password == %@", _emailTextField.text, _passwordTextField.text];

            NSError *error;
            NSSet *result = [CoreDataController fetchEntities:@"MSDUser" withPredicate:predicate error:error];

            if (error)
            {
                DebugLog(@"Login user fetch error: %@", [error userInfo]);
            }
            if ([result count] > 0)
            {
                MSDUser *user = (MSDUser *)[[result allObjects] firstObject];
                SettingsHelper *settings = [SettingsHelper new];

                [settings setInteger:[user.id integerValue] forSetting:MSDCurrentUserID];
                [settings setObject:user.email forSetting:MSDLastUsedUsername];

                _scoreInfoViewController = [[MSDScoreInfoViewController alloc] initWithNibName:@"MSDScoreInfoViewController" bundle:nil];
                _scoreInfoViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
                [self presentViewController:_scoreInfoViewController animated:YES completion:nil];

                [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(logout) name:@"MSDLogout" object:nil];
            }
            else
                [FunctionsHelper showAlertMessage:@"Aanmelden mislukt" message:@"Het aanmelden is mislukt, uw e-mailadres en/of paswoord blijken ongeldig te zijn. Probeer opnieuw of contacteer de admin voor assistentie, dank u."];
        }
        else
        {
            _mcvc = [[MFMailComposeViewController alloc] init];
            _mcvc.mailComposeDelegate = self;
            NSString *toAddress = @"hylke.segers@merck.com";
            [_mcvc setToRecipients:[NSArray arrayWithObjects:toAddress,nil]];
            [_mcvc setCcRecipients:[NSArray arrayWithObjects:_emailTextField.text, nil]];
            [_mcvc setSubject:@"Paswoord vergeten"];
            [_mcvc setMessageBody:[NSString stringWithFormat:@"Beste,\n\nIk ben mijn paswoord vergeten.\n\nMet vriendelijke groeten,\n%@", _emailTextField.text] isHTML:NO];

            _mcvc.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
            [self presentViewController:_mcvc animated:YES completion:nil];
        }
    }
    else
        [FunctionsHelper showAlertMessage:@"Ongeldig e-mailadres" message:@"Gelieve een geldig e-mailadres in te vullen, dank u."];
}