Update public.php

[bjuergens]

Description

Added open-graph support to share-page:

• That little share-title is added for all share-links.
• When a preview can be generated, the little preview-image is also generated.
• other cases, that open-graph might support (e.g. videos) are not explicitly included.

please be gentle; this is my first time contributing to free sorftware.

Related Issue

#12946

Motivation and Context

In telegram a share-link now looks like this

Without this patch, it looks like this:

How Has This Been Tested?

It has been tested on 8.2.7, but not on the current version.

Here is a link to in owncloud-instance, that already uses this feature: https://owncloud.wotanii.de/index.php/s/TQsy6hyWaSM3tBP

You can see, that there are the relavant <meta /> tags in markup.

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

[mention-bot]

@wotanii, thanks for your PR! By analyzing the annotation information on this pull request, we identified @Henni, @LukasReschke and @jancborchardt to be potential reviewers

[DeepDiver1975]

There is already an open pull request - please help testing #25579

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.