Support ignoring users who unshared from a calendar

[tcitworld]

nextcloud/server#43117 brings a new share type which needs to be taken into account.

[tcitworld]

What we need is the list of unshares for a calendar, so that we can remove them from the list of users computed from the group shares.

As far as I can see there's no way to get the list of shares including the unshares, so this needs server changes. I would either :

• getSharesForId to have an optional parameter to include unshares
• add a new method to get specifically unshares

Do you have some input @miaulalala ?

[nickvergessen]

I'll have a look

[miaulalala]

What we need is the list of unshares for a calendar, so that we can remove them from the list of users computed from the group shares.

As far as I can see there's no way to get the list of shares including the unshares, so this needs server changes. I would either :

* `getSharesForId` to have an optional parameter to include unshares

* add a new method to get specifically unshares

Do you have some input @miaulalala ?

I like the unshares method. Optional params are not my fave code construct. OTOH having one query instead of two is a legitimate thought. I leave the implementation details up to you.