Background
Currently, when a user selects to download a page in two-column format, they are redirected to a "rendering finished" page which has a button for downloading the PDF (https://en.wikipedia.org/w/index.php?title=Special:Book&bookcmd=rendering&return_to=Main+Page&collection_id=f76862132045e12d1f62c3c065c54af7f3f8b2b7&writer=rdf2latex&is_cached=1)
For the electron option, we currently have no such page and selecting "download as PDF" automatically generated the PDF
We would like to investigate whether it's worth it to have a similar page for the updated PDF renderer. In the future, this page may also contain setting and customization for the PDF.
Acceptance criteria
Redesign download as pdf page to account for:
- Rendering updates (currently done by percentage)
- Rendering completion and download button
- Page must contain size (if available)
- Page must contain article name
- Remove old page (selections screen)
- Update instrumentation
- Feature flag and add to beta cluster
Prototype
https://wikimedia.invisionapp.com/share/MSD8GDQBH#/screens/250732064