- (void)sendNewMessageAction {
    if(!newMessage.length && !attachment) {
        [Utility showAlert:NSCSENLocalizedString(@"NEW_MESSAGE_EMPTY_DATA", nil)];
        return;
    }

    [MBProgressHUD showHUDAddedTo:self.view animated:YES];
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
                   ^{
                       // Async part
                       NSDictionary *answer = [[WebService sharedManager] call:@"sendMessage" arguments:@[newMessage.length ? newMessage : @"", [self formatBase64FromAttachment]]];

                       dispatch_async(dispatch_get_main_queue(),
                                      ^{
                                          // Sync part (in main thread)
                                          [MBProgressHUD hideHUDForView:self.view animated:YES];

                                          if([[AnswerHandler sharedManager] processAnswer:answer]) {
                                              newMessage = @"";
                                              newMessageTextView.text = placeholderString;

                                              [newMessageTextView endEditing:YES];

                                              [self deleteAttachmentAction];

                                              [self loadData];
                                          }
                                      });
                   });
}

- (NSString *)formatBase64FromAttachment {
    if(!attachment) {
        return @"";
    }

    NSString *imgBase64 = [UIImagePNGRepresentation(attachment) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

    NSString * parsedString = [imgBase64 stringByReplacingOccurrencesOfString:@"+" withString:@"-"];
    return [parsedString stringByReplacingOccurrencesOfString:@"/" withString:@"_"];
}