[calsify] draft-ietf-calext-jscalendar and participants

[Michael Douglass <[e-mail]>]

I ran into a problem mapping iCalendar ATTENDEE onto jscalendar 
participants.

For example I might have an ATTENDEE that looks like

ATTENDEE;CN=Michael 
Douglass;CUTYPE=INDIVIDUAL;PARTSTAT=ACCEPTED;ROLE=CHAIR;EMAIL=[e-mail]:/aMzkzNTI4MzkzNTI4MzkzNQPuXCcDTdG5iXfOhcljjCSqMYrUXDcs6f1z7CyXejTR/principal/

The value is a URI but certainly not an email address.

Additionally the value is used as a unique key to the attendee - 
something we don't have clearly defined in jscalendar.

I suggest we add a calendarAddress property which maps on to the value 
of the ORGANIZER or ATTENDEE properties.

The "calendarAddress" and "email" properties can then match the behavior 
specified for the EMAIL parameter and ORGANIZER/ATTENDEE values -

    Description:  This property parameter MAY be specified on "ORGANIZER"
       or "ATTENDEE" properties.  This property can be used in situations
       where the calendar user address value of the "ORGANIZER" and
       "ATTENDEE" properties is not likely to be an identifier that
       recipients of scheduling messages could use to match the calendar
       user with, for example, an address book entry.  The value of this
       property is an email address that can easily be matched by
       recipients.  Recipients can also use this value as an alternative
       means of contacting the calendar user via email.  If a recipient's
       calendar user agent allows the recipient to save contact
       information based on the "ORGANIZER" or "ATTENDEE" properties,
       those calendar user agents SHOULD use any "EMAIL" property
       parameter value for the email address of the contact over any
       mailto: calendar user address specified as the value of the
       property.  Calendar user agents SHOULD NOT include an "EMAIL"
       property parameter when its value matches the calendar user
       address specified as the value of the property.


While I appreciate the intent of the jscalendar sendTo I'd suggest it's 
in general unnecessary to specify iMip - iMip is sending email with a 
calendar attachment and it goes to the email address.

I'd suggest that sendTo only be used for non-iMip alternatives - or if 
iMip really should be sent to a different address from email.

So the above would become:

"participants": {

    "123": {

       ....

      "calendarAddress": 
"/aMzkzNTI4MzkzNTI4MzkzNQPuXCcDTdG5iXfOhcljjCSqMYrUXDcs6f1z7CyXejTR/principal/"

     "email": "[e-mail]"

      ...}


Additional to all this I realised there is no clear mapping for the 
SENT-BY parameter. This is used on ATTENDEE and ORGANIZER when somebody 
else sends on behalf of the participant. I suggest we add a "sentBy" 
jscalendar property for participants.

I believe there's no mapping for the jscalendar "invitedBy" from 
iCalendar - is that so?