Stats: Show 'sending email' notice

[edanzer]

Resolves: #87174
Addresses: Automattic/jetpack#40524
Related designs and P2: p1HpG7-v7v-p2

Proposed Changes

Context: If users publish a post and then go to the newsletter stats page too quickly, they will see stats showing a small number of emails sent, which has proven confusing.

Changes:

• We now show "Still sending emails" notice in place of stats for the first 5 minutes after a post is published.

The stats now look like this for the first 5 minutes after publishing a post:

Testing Instructions

• Check this out and go to a test site where you have some subscribers.
• Publish a post. If necessary, be sure to set it to send emails to subscribers.
• Go to Stats > Subscribers > Emails > the individual page for this post (or go directly to http://calypso.localhost:3000/stats/email/opens/day/[POSTID]/[YOURWEBSITEURL])
• Confirm you see "Still sending emails." for the first five minutes,.
• After 5 minutes, confirm you see numbers (if you publish on a site or in a way where no emails are sent, you'll just see 0 after 5 minutes).

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• Have you written new tests for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
  • For UI changes, have we tested the change in various languages (for example, ES, PT, FR, or DE)? The length of text and words vary significantly between languages.
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-aUh-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-128390

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-128390&env=jetpack

Automattic for Agencies live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-128390&env=a8c-for-agencies

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~81 bytes added 📈 [gzipped])

name   parsed_size           gzip_size
stats       +204 B  (+0.0%)      +81 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[matticbot]

This PR modifies the release build for the following Calypso Apps:

For info about this notification, see here: PCYsg-OT6-p2

• blaze-dashboard
• command-palette-wp-admin
• help-center
• notifications
• odyssey-stats
• whats-new

To test WordPress.com changes, run install-plugin.sh $pluginSlug update/email-stats-sending-notice on your sandbox.

[a8ci18n]

This Pull Request is now available for translation here: https://translate.wordpress.com/deliverables/17075819

Some locales (Hebrew, Japanese) have been temporarily machine-translated due to translator availability. All other translations are usually ready within a few days. Untranslated and machine-translated strings will be sent for translation next Monday and are expected to be completed by the following Friday.

Thank you @edanzer for including a screenshot in the description! This is really helpful for our translators.

[simison]

Works great! Thanks.

[a8ci18n]

Translation for this Pull Request has now been finished.