Don't show groups in share placeholder if group sharing is disabled

[tcitworld]

Steps to reproduce

1. Check out Dav respect disallow sharing with groups server#25658
2. Disallow sharing with groups in the sharing settings
3. Open the share section on an address book

Expected behaviour

No mention of "groups" in the placeholder.

Actual behaviour

Mention of "groups" in the placeholder.

[harisaisundhar]

Hello! I would like to work on this issue, is it available? If so, can you tell more about this ?

[tcitworld]

Great !

So in server we have introduced nextcloud/server#25658 a while ago, which is a flag to disable sharing with groups. It's working as intended, no groups are suggested in the autocomplete sharing field, but it would be nicer if the placeholder just said Share with users instead of Share with users or groups when group sharing is disabled.

See https://github.com/nextcloud/contacts/blob/master/src/components/AppNavigation/Settings/SettingsAddressbookShare.vue#L82

To know if group sharing if enabled you'll have to get the config value here and provide it though initial state.

$this->config->getAppValue('core', 'shareapi_allow_group_sharing', 'yes') === 'yes'

https://github.com/nextcloud/contacts/blob/master/lib/Controller/PageController.php

Then you can get the state for instance in a service:
https://github.com/nextcloud/contacts/blob/master/src/services/isContactsInteractionEnabled.js

And finally change the placeholder in the component linked at first depending on this value.

[harisaisundhar]

Awesome, thanks! Will come up with updates soon.

[Zishan-7]

Hey! I tried to fix the issue can you please review the PR?