To review URL sharing, previews and server rendering

[phwizard]

Sharing with previews

Let's ignore the existing 'short link' and 'preview' sharing service functionality from the old version.
This functionality allows to display chat preview in outside applications (e.g. when sharing Ethora based app chat link via WhatsApp or Slack - via eto.li users will see a link preview including a chat name).

In chat sharing modal in the new beta version we will use the same URL as in the browser for now.

In future phase, we should:

1. Add server rendering (Next.js ?) so that the usual chat URL copied from the browser also supports link previews.
2. Add a better URL shortener functionality for the QR/sharing modal window so that a short link can be generated for each chat which will ultimately render into the normal link.
3. Review requirements for Chat and User profile access and layout for guest users (i.e. cases where User or Chat access is set to public in which case we can allow 3rd party apps, search engines and unauthorised users to preview some of the content).