Configure pdfjs

[alepbloyd]

What type of PR is this? (check all applicable)

• Refactor
• Feature
• Bug Fix
• Optimization
• Documentation Update

Description

Adds pdfjs viewer for AcademicDocuments. When an AcademicDocument with a pdf format is deposited and processed, the show page for that work should appear with an embedded PDF viewer by default.

Related Tickets & Documents

• Related Issue Configure pdfjs for AcademicWorks #32
• Closes Configure pdfjs for AcademicWorks #32

QA Instructions, Screenshots, Recordings

Run automated test suite, should see 205 examples, 0 failures, 1 pending.

Manual testing:

• Build and launch containers, attach to rails container, run 'bundle exec rails db:seed'
• Sign in as admin user (admin@example.com, password is password)
• Click on "Works", then "Add New Work", and choose "Academic Document" as the work type.
• Fill in required metadata, check deposit agreement, and attach a PDF file. Click save.
• You should be redirected to the show page, where you will see a notification that "Your files are being processed by Scholarspace in the background..."
• Refresh the page after 30 seconds or so (or monitor logs for completion of background work jobs).
• You should see an interactive PDF viewing panel on the page.

Contrary to how ArchivalDocuments are processed, these works do not get split into component DerivedPage works for IIIF rendering, so you should not have to trigger any jobs in sidekiq and this should run fairly quickly.

Added/updated tests?

• Yes - added just a basic, 'can we successfully deposit a pdf work through the dashboard' test. Still working on figuring out testing the actual pdfjs rendering.
• No, and this is why: please replace this line with details on why tests
  have not been included
• I need help with writing tests

Other notes

1. On sticking the whole PDFJS directory in /public. There is probably a good way to have PDFJS build with the Docker images, but the example code for PDFJS (https://mozilla.github.io/pdf.js/getting_started/) is based on including the pre-built build in the repository.

2. This is operating under the general assumption that 'AcademicDocuments' will be PDF files. I have the pdfjs view panel set to conditionally render based on if the representative media is a pdf, so it should be okay to deposit non-pdfs as this work type, but there will not be a viewing panel.

[alepbloyd]

@dolsysmith @maxturer

I need to spend some more time arguing with our testing and CI system, so the test I started for this is also skipped, but I think this should be okay if either of y'all are up for manually testing this with the steps in the PR.

[dolsysmith]

PDF is rendered correctly and viewer behaves as expected.