/// <summary>
/// Notifies the reader when an editor register a new news item in a section or when an existing one is edited.
/// In a real application, it could be an e-mail, in a web application, or a notification, in a mobile application.
/// </summary>
/// <param name="sender">Action performer.</param>
/// <param name="e">Event argument.</param>
public void Notify(object sender, NewsChangeEventArgs e)
{
if (e.News.EditDate != null)
{
Console.WriteLine($"Hello \"{Name}\". The news \"{e.News.Title}\" was edited in {e.News.EditDate.Value.ToLongDateString()} by {e.News.UpdateEditor.Name}.\nSynthesis: {e.News.Synthesis}\n");
}
else
{
Console.WriteLine($"Hello \"{Name}\". New news item: \"{e.News.Title}\".\n Registered in {e.News.PublishDate.ToLongDateString()} by {e.News.Editor.Name}.\nSynthesis: {e.News.Synthesis}\n");
}
}
/// <summary>
/// Invokes all methods assigned to "Change" event handler, in order to notify all readers about updates.
/// </summary>
/// <param name="e">Update event.</param>
protected virtual void OnChange(NewsChangeEventArgs e)
{
Change?.Invoke(this, e);
}
