/** <summary>
* Given a URI/URL, we call iCalendar's LoadFromURI, select the first element in the return, then return true.
* </summary>
*/
public bool Load(Uri path)
{
iCalc = iCalendar.LoadFromUri(path);
iCal = iCalc.FirstOrDefault();
this.Uri = path;
return true;
}
/// <summary>
/// Executed before the message is saved
/// </summary>
/// <param name="message"></param>
/// <param name="postSaveAction">if not null an action run after the save. This happens even if the save is cancelled.</param>
/// <returns>
/// True if the save is to be cancelled
/// </returns>
public bool BeforeSave(ReceivedEmailMessage message, out Action postSaveAction)
{
postSaveAction = null;
/////
// Check the message.
/////
if (message == null)
{
return(false);
}
var iCalMessage = message.As <ReceivedICalEmailMessage>( );
/////
// Ensure the message is a received iCal email message.
/////
if (iCalMessage == null)
{
return(false);
}
/////
// The iCalUpdate field was set by the iCalMailMesssageFormatter that was called as part
// of the ProcessInboxes action.
/////
if (string.IsNullOrEmpty(iCalMessage.ICalUpdate))
{
return(false);
}
/////
// Read the iCal update.
/////
using (var sr = new StringReader(iCalMessage.ICalUpdate))
{
/////
// Deserialize the string into the iCal object model.
/////
IICalendarCollection iCalendarCollection = iCalendar.LoadFromStream(sr);
if (iCalendarCollection == null)
{
return(false);
}
/////
// Get the first calendar.
/////
IICalendar calendar = iCalendarCollection.FirstOrDefault( );
if (calendar == null || calendar.Events == null)
{
return(false);
}
/////
// Get the first calendar event.
/////
IEvent calendarEvent = calendar.Events.FirstOrDefault( );
if (calendarEvent == null)
{
return(false);
}
/////
// Make sure the calendar events UID is set.
/////
if (string.IsNullOrEmpty(calendarEvent.Uid))
{
return(false);
}
EventEmail eventEntity = null;
Appointment appointment = null;
/////
// Find all sent iCal UID containers that correlate to the received calendar events UID.
/////
IEnumerable <ICalUidContainer> iCalUidContainers = Entity.GetByField <ICalUidContainer>(calendarEvent.Uid, ICalUidContainer.ICalUid_Field);
if (iCalUidContainers != null)
{
/////
// Get the first sent message.
/////
ICalUidContainer iCalUidContainer = iCalUidContainers.FirstOrDefault( );
if (iCalUidContainer != null && iCalUidContainer.CalendarEventEmail != null)
{
/////
// Get the original event email object that was used to create the sent iCal Email Message.
/////
eventEntity = iCalUidContainer.CalendarEventEmail.AsWritable <EventEmail>( );
}
}
bool modificationsMade = false;
if (eventEntity == null)
{
/////
// No existing event email so this is a new request.
/////
EntityRef type = GetEventCreationType(message);
eventEntity = type != null?Entity.Create(type).As <EventEmail>( ) : new EventEmail( );
appointment = Entity.Create <Appointment>();
eventEntity.EventEmailAppt = appointment;
modificationsMade = true;
eventEntity.Name = calendarEvent.Summary;
var calUidContainer = new ICalUidContainer
{
ICalUid = calendarEvent.Uid
};
eventEntity.CalendarId = calUidContainer;
string creatorEmailAddress = GetEmailAddress(message.EmFrom);
if (creatorEmailAddress != null)
{
EmailContact creatorEmailContact = FindEmailContact(creatorEmailAddress);
if (creatorEmailContact == null)
{
var mailAddress = new MailAddress(message.EmFrom);
creatorEmailContact = CreateEmailContact(creatorEmailAddress, mailAddress.DisplayName ?? creatorEmailAddress);
}
eventEntity.EventEmailCreator = creatorEmailContact;
}
foreach (IAttendee attendee in calendarEvent.Attendees)
{
string emailAddress = GetEmailAddress(attendee.Value.ToString( ));
if (emailAddress != null)
{
EmailContact emailContact = FindEmailContact(emailAddress);
if (emailContact == null)
{
CreateEmailContact(emailAddress, attendee.CommonName);
}
appointment.EventEmailAttendees.Add(emailContact.EmailContactOwner);
}
}
CreateAndSendAcceptance(calendar, iCalMessage, eventEntity);
}
else
{
appointment = eventEntity.EventEmailAppt;
if (calendar.Method == Methods.Publish || calendar.Method == Methods.Request)
{
/////
// A REQUEST or PUBLISH means a new event arriving in the system.
/////
CreateAndSendAcceptance(calendar, iCalMessage, eventEntity);
}
}
eventEntity.ReceivedEmailMessages.Add(iCalMessage);
/////
// Start time.
/////
if (calendarEvent.Start != null)
{
DateTime utcTime = calendarEvent.Start.Utc;
if (!Equals(utcTime, appointment.EventStart))
{
appointment.EventStart = utcTime;
modificationsMade = true;
}
}
/////
// End time.
/////
if (calendarEvent.End != null)
{
DateTime utcTime = calendarEvent.End.Utc;
if (!Equals(utcTime, appointment.EventEnd))
{
appointment.EventEnd = utcTime;
modificationsMade = true;
}
}
/////
// All Day Event.
/////
if (appointment.EventIsAllDay == null || !Equals(calendarEvent.IsAllDay, appointment.EventIsAllDay.Value))
{
appointment.EventIsAllDay = calendarEvent.IsAllDay;
modificationsMade = true;
}
/////
// Location.
/////
if (calendarEvent.Location != null)
{
if (!Equals(calendarEvent.Location, appointment.EventLocation))
{
appointment.EventLocation = calendarEvent.Location;
modificationsMade = true;
}
}
/////
// Location.
/////
if (eventEntity.EventEmailAppt.EventEmailPriority == null || !Equals(calendarEvent.Priority, eventEntity.EventEmailAppt.EventEmailPriority))
{
string priorityAlias;
if (calendarEvent.Priority <= 0)
{
/////
// Undefined.
/////
priorityAlias = null;
}
else if (calendarEvent.Priority <= 4)
{
/////
// High priority.
/////
priorityAlias = "core:highPriority";
}
else if (calendarEvent.Priority == 5)
{
/////
// Normal priority.
/////
priorityAlias = "core:normalPriority";
}
else if (calendarEvent.Priority <= 9)
{
/////
// Low priority.
/////
priorityAlias = "core:lowPriority";
}
else
{
/////
// Invalid priority.
/////
priorityAlias = null;
}
eventEntity.EventEmailAppt.EventEmailPriority = priorityAlias != null?Entity.Get <EventEmailPriorityEnum>(priorityAlias) : null;
modificationsMade = true;
}
/////
// Status.
/////
string statusAlias = null;
switch (calendarEvent.Status)
{
case EventStatus.Cancelled:
statusAlias = "core:eventStatusCancelled";
break;
case EventStatus.Confirmed:
statusAlias = "core:eventStatusConfirmed";
break;
case EventStatus.Tentative:
statusAlias = "core:eventStatusTentative";
break;
}
if (!string.IsNullOrEmpty(statusAlias))
{
if (appointment.EventStatus == null || appointment.EventStatus.Alias != statusAlias)
{
appointment.EventStatus = Entity.Get <EventStatusEnum>(statusAlias);
modificationsMade = true;
}
}
if (modificationsMade)
{
CustomContext cc = null;
try
{
string timeZone = null;
if (eventEntity != null)
{
/////
// Find all sent iCal Email Messages that correlate to the received calendar events UID.
/////
IEnumerable <SentICalEmailMessage> sentICalEmailMessages = eventEntity.SentEmailMessages;
if (sentICalEmailMessages != null)
{
SentICalEmailMessage sentICalEmailMessage = sentICalEmailMessages.FirstOrDefault(sent => sent.ICalTimeZone != null);
if (sentICalEmailMessage != null)
{
timeZone = sentICalEmailMessage.ICalTimeZone;
}
}
}
if (string.IsNullOrEmpty(timeZone))
{
if (calendar.TimeZones != null)
{
ITimeZone calendarTimeZone = calendar.TimeZones.FirstOrDefault( );
if (calendarTimeZone != null)
{
timeZone = calendarTimeZone.TzId;
}
}
}
if (!string.IsNullOrEmpty(timeZone))
{
/////
// Set up a custom context just for the duration of this call.
/////
RequestContext currentRequestContext = RequestContext.GetContext( );
var data = new RequestContextData(currentRequestContext)
{
TimeZone = timeZone
};
cc = new CustomContext(data);
}
eventEntity.Save( );
}
finally
{
/////
// Ensure the custom context is disposed.
/////
if (cc != null)
{
cc.Dispose( );
}
}
}
}
return(false);
}
/// <summary>
/// Gets the Ical update.
/// </summary>
/// <param name="message">The message.</param>
/// <param name="receivedICalEmailMessage">The received I cal email message.</param>
/// <param name="iCal">The i cal.</param>
/// <returns></returns>
private static MailMessageFormatterResult GetICalUpdate(MailMessage message, ReceivedICalEmailMessage receivedICalEmailMessage, out string iCal)
{
iCal = null;
if (message == null)
{
return(MailMessageFormatterResult.Skip);
}
try
{
var attachableItems = new List <AttachmentBase>( );
attachableItems.AddRange(message.AlternateViews);
attachableItems.AddRange(message.Attachments);
/////
// Locate a view that contains a calendar attachment.
/////
foreach (AttachmentBase attachment in attachableItems)
{
if (attachment.ContentType.MediaType == "text/calendar")
{
/////
// Deserialize the iCalendar attachment.
/////
IICalendarCollection iCalendarCollection = iCalendar.LoadFromStream(attachment.ContentStream);
if (iCalendarCollection != null)
{
IICalendar calendar = iCalendarCollection.FirstOrDefault( );
if (calendar != null)
{
if (calendar.Method == Methods.Reply)
{
IEvent calendarEvent = calendar.Events.FirstOrDefault( );
if (calendarEvent != null && !string.IsNullOrEmpty(calendarEvent.Uid))
{
/////
// Find all iCal UID containers that correlate to the received calendar events UID.
/////
IEnumerable <ICalUidContainer> iCalUidContainers = Entity.GetByField <ICalUidContainer>(calendarEvent.Uid, ICalUidContainer.ICalUid_Field);
if (iCalUidContainers != null)
{
/////
// Get the first iCal UID container.
/////
ICalUidContainer iCalUidContainer = iCalUidContainers.FirstOrDefault( );
if (iCalUidContainer != null && iCalUidContainer.CalendarEventEmail != null)
{
/////
// Get the original event email object that was used to calendar UID container.
/////
EventEmail eventEntity = iCalUidContainer.CalendarEventEmail;
if (eventEntity != null)
{
// ***************
// This needs to be fixed as part of dealing with replies from ical requests. The rel on a rel needs to be turned into something else.
// ***************
//IEntityRelationship<EventEmailAttendees, EmailContact> attendeeRelationshipInstance = FindAttendeeRelationshipInstance( eventEntity, message.From.Address.ToLowerInvariant( ) );
//if ( attendeeRelationshipInstance != null )
//{
// Attendee attendee = FindICalAttendee( calendarEvent, message.From.Address.ToLowerInvariant( ) );
// if ( attendee != null )
// {
// var eventEmailAttendees = attendeeRelationshipInstance.Instance.AsWritable<EventEmailAttendees>( );
// switch ( attendee.ParticipationStatus )
// {
// case ParticipationStatus.Accepted:
// eventEmailAttendees.AttendeeStatus_Enum = AttendeeStatusEnum_Enumeration.AttendeeStatusAccepted;
// break;
// case ParticipationStatus.Declined:
// eventEmailAttendees.AttendeeStatus_Enum = AttendeeStatusEnum_Enumeration.AttendeeStatusDeclined;
// break;
// case ParticipationStatus.Delegated:
// eventEmailAttendees.AttendeeStatus_Enum = AttendeeStatusEnum_Enumeration.AttendeeStatusDelegated;
// break;
// case ParticipationStatus.NeedsAction:
// eventEmailAttendees.AttendeeStatus_Enum = AttendeeStatusEnum_Enumeration.AttendeeStatusNeedsAction;
// break;
// case ParticipationStatus.Tentative:
// eventEmailAttendees.AttendeeStatus_Enum = AttendeeStatusEnum_Enumeration.AttendeeStatusTentative;
// break;
// }
// eventEmailAttendees.Save( );
// }
//}
//*************
receivedICalEmailMessage.CreatedEventEmail = eventEntity;
/////
// Save the message since the process inbox action will discard it.
/////
receivedICalEmailMessage.Save( );
}
}
}
}
return(MailMessageFormatterResult.Reject);
}
/////
// Serialize the iCalendar to a string for storage.
/////
var serializer = new iCalendarSerializer( );
iCal = serializer.SerializeToString(calendar);
return(MailMessageFormatterResult.Ok);
}
}
break;
}
}
}
catch (Exception exc)
{
EventLog.Application.WriteError("Failed to process email iCal attachment. " + exc);
return(MailMessageFormatterResult.Error);
}
return(MailMessageFormatterResult.Skip);
}