AI Featured Image: enable Stable Diffusion to all users and improve tracking information

[lhkowalski]

Depends on D149604-code. The required code got merged already.

Proposed changes:

• Enable stable diffusion to 100% of the site base
• Add site type to the events being tracked
• Add generation model to the events being tracked
• Drop the need of the jetpack_experimental_image_generation_enabled filter to enable the Stable Diffusion generation
• Change the endpoint used to generate the images, to use the same that provides Dall-e-3 generation
• Refactor code now that both endpoints are the same

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

Jetpack product discussion

Does this pull request change what data or activity we track or use?

Yes, it's including the site type and the image generation model on the events tracked by the Featured Image Generation tool.

Testing instructions:

• Sandbox the public-api and apply the D149604-code diff to your sandbox
• Test it on a Simple site, a Jetpack site and, if possible, an Atomic site too
• Run this branch on your testing site
  • For Atomic sites, use the Jetpack Beta Tester plugin to run the branch, the same way you would do on a JN site
• Make sure beta blocks are disabled and you are running production blocks on your testing site
  • For Simple sites, use it unproxied so you get the production blocks
• Go to the block editor, open the browser console and enable debug messages with localStorage.setItem( 'debug', '*' );
• Add some content to the editor, than look for the AI Featured Image tool and click to generate the image
• Confirm an image is generated
• Confirm the generation event was triggered containing the site type and the image generation model
  • the site type needs to be the type of the site you are using for tests
  • the generation model needs to be stable-diffusion since you are using the beta variation
• Confirm you can use the tool as expected, with follow ups and every other buttons working as expected

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WordPress.com Simple site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin, and enable the update/ai-featured-image-stable-diffusion-soft-launch branch.

• To test on Simple, run the following command on your sandbox:

  bin/jetpack-downloader test jetpack update/ai-featured-image-stable-diffusion-soft-launch
  

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

• ✅ Include a description of your PR changes.
  
• ✅ Add a "[Status]" label (In Progress, Needs Team Review, ...).
  
• ✅ Add testing instructions.
  
• ✅ Specify whether this PR includes any changes to data or privacy.
  
• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

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The e2e test report can be found here. Please note that it can take a few minutes after the e2e tests checks are complete for the report to be available.

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Once your PR is ready for review, check one last time that all required checks appearing at the bottom of this PR are passing or skipped.
Then, add the "[Status] Needs Team Review" label and ask someone from your team review the code. Once reviewed, it can then be merged.
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Jetpack plugin:

The Jetpack plugin has different release cadences depending on the platform:

• WordPress.com Simple releases happen daily.
• WoA releases happen weekly.
• Releases to self-hosted sites happen monthly. The next release is scheduled for June 4, 2024 (scheduled code freeze on June 3, 2024).

If you have any questions about the release process, please ask in the #jetpack-releases channel on Slack.

[dhasilva]

Working well on all platforms.

[vianasw]

Code looks good. I tested it and it worked in all three site types.

[vianasw]

Nice addition.