1496744 - CalDAV should support multiple calendars, e.g. Owncloud

Status: RESOLVED DUPLICATE of bug 306495

(Calendar :: Provider: CalDAV, defect)

Description

[Matthew Exon]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:62.0) Gecko/20100101 Firefox/62.0

Steps to reproduce:

Trying to add my Owncloud calendars:

* In Owncloud web interface, click "Settings and Import"
* Copy the URL from "Primary CalDAV Address" (https://owncloud.exon.name/remote.php/dav/)
* In Lightning, select "New Calendar...", "On the Network"
* Select "CalDAV" and paste URL into "Location"
* Give it a name and an email


Actual results:

* New calendar appears with yellow exclamation triangle next to it
* Events are not imported from Owncloud
* It only worked when I imported a specific calendar https://owncloud.exon.name/remote.php/dav/calendars/mat/personal/
* Clicking on the yellow exclamation mark didn't bring up any more detail about what the problem was
* Running on the command line, I got the following output:

Warning: There has been an error reading data for calendar: Owncloud.  However, this error is believed to be minor, so the program will attempt to continue. Error code: DAV_DAV_NOT_CALDAV. Description: The resource at https://owncloud.exon.name/remote.php/dav/ is a DAV collection but not a CalDAV calendar
Warning: There has been an error reading data for calendar: Owncloud.  However, this error is believed to be minor, so the program will attempt to continue. Error code: READ_FAILED. Description: 
Error: [calCachedCalendar] replay action failed: null, uri=https://owncloud.exon.name/remote.php/dav/, result=2147500037, operation=[xpconnect wrapped calIOperation]



Expected results:

* Events should have been imported from Owncloud
* Behind the scenes, it should have retrieved the URL and discovered one or more calendars underneath
* If there is only one calendar, it could just import that one
* If there are multiple calendars, it could e.g. ask user to select one from a list
* Another way of handling that is to automatically import all available calendars
* Clicking on a yellow exclamation mark should bring up the error message about "not a CalDAV calendar", or that error should be surfaced some other way

Note that I previously imported the "Primary CalDAV Address" onto an Android phone using DAVdroid.  I used the "iOS / OS X CalDAV Address" to import the account to OS X's Calendar and also onto an iPhone.  Events from all calendars automatically show up.  This is why I expected the same URL to work in Lighting.