/// <summary>
/// Creates <see cref="MailAddress"/> from <see cref="ICalAddress"/> that contains e-mail.
/// </summary>
/// <param name="address"><see cref="ICalAddress"/> that contains e-mail.</param>
/// <returns>New instance of <see cref="MailAddress"/>.</returns>
private static MailAddress GetMailAddress(ICalAddress address)
{
if (!string.IsNullOrEmpty(address.CommonName))
{
return(new MailAddress(address.Uri.Replace("mailto:", ""), address.CommonName, Encoding.UTF8));
}
return(new MailAddress(address.Uri.Replace("mailto:", "")));
}
/// <summary>
/// Sends an e-mail with event/to-do attachment to every attendee found in <see cref="ICalendar2.Attendees"/> list.
/// </summary>
/// <param name="calendar">Calendar object with event or to-do. The <see cref="ICalendar2.Method"/> property must be specified in this calendar object.</param>
public static async Task NotifyAttendeesAsync(DavContext context, ICalendar2 calendar)
{
IEnumerable <IEventBase> components = calendar.Events.Cast <IEventBase>();
if (!components.Any())
{
components = calendar.ToDos.Cast <IEventBase>();
}
IEventBase component = components.First();
ICalAddress organizer = component.Organizer;
string iCalendarContent = new vFormatter().Serialize(calendar);
foreach (IAttendee attendee in component.Attendees)
{
try
{
using (MailMessage mail = new MailMessage())
{
mail.From = GetMailAddress(organizer);
mail.To.Add(GetMailAddress(attendee));
mail.Subject = string.Format("Event: {0}", component.Summary.Text);
using (AlternateView alternateView = AlternateView.CreateAlternateViewFromString(iCalendarContent, Encoding.UTF8, "text/calendar"))
{
alternateView.TransferEncoding = TransferEncoding.EightBit;
// Method must be specified both in iCalendar METHOD property and in Content-Type.
alternateView.ContentType = new ContentType(string.Format(ContentTypePattern, calendar.Method.Method.Name));
mail.AlternateViews.Add(alternateView);
using (SmtpClient smtpClient = new SmtpClient())
{
smtpClient.EnableSsl = true;
await smtpClient.SendMailAsync(mail);
}
}
}
}
catch (Exception ex)
{
// Probably SMTP server is not configured in web.config/app.config
string message = "Faled to notify attendees about event change. SMTP server is not configured in web.config/app.config" + Environment.NewLine;
context.Logger.LogError(message, ex);
}
}
}
