private async Task Validate(Models.ShortenUrl model)
{
var shortcutValid = await _validator.IsShortcutValidAsync(model.Shortcut);
if (!shortcutValid)
{
throw new ArgumentException("Shortcut is already used");
}
var urlValid = await _validator.IsUrlValidAsync(model.Url);
if (!urlValid)
{
throw new ArgumentException("Url is not valid");
}
}