Add status line to talk.brave.com to give notices on system outages, etc.

[mrose17]

The question is where to get the data from...

[tackley]

Option 1. If we updated status.brave.com with the notice, there's an API to obtain the current status values - https://status.brave.com/api/v2/summary.json. Of course, we'd have to weigh up whether introducing a call to that url from talk.brave.com justifies providing the feedback.

Option 2. There are also more managed options from statuspage for providing that feedback - https://support.atlassian.com/statuspage/docs/embed-status-updates-to-other-pages/, though I suspect that the extra third party dep this would introduce makes this an unattractive approach.

Option 3. Alternatively, for big emergencies only, we could just embed an urgent message in the code and re-release, since the release of talk.brave.com takes less than 1 minute. If we wanted to take that approach we should prepare the logic so that setting the setting the message is just a matter of updating a constant string and we're not trying to prepare UI logic etc during an emergency.

[mrose17]

Option 1 (summary.json) doesn't seem so bad if we can load/parse asynchronously and then call notice

Option 3 (edit-deploy) seems duplicative given that we probably want to change the status site as well.

[tackley]

Option 1 seems sensible to me. To implement, we'll need to:

• update the CSP to include https://status.brave.com as a connect-src - this appears to have already been done
• implement the code to read the status json and if brave talk is non-operational display a banner.

[mrose17]

@tackley - i confirm option 1.

[stephendonner]

Verified PASSED on dev (and staging).

Confirmed link to (Brave's) Service Status (https://status.brave.com/) appears at the bottom right of the footer, on https://talk.brave.software/ and https://talk.bravesoftware.com: