[$250] Chat - No unread marker when messages are marked unread

[IuliiaHerets]

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Version Number: v9.0.20-0
Reproducible in staging?: Y
Reproducible in production?: N
Email or phone of affected tester (no customers): applausetester+kh050806@applause.expensifail.com
Issue reported by: Applause Internal Team

Action Performed:

1. Go to staging.new.expensify.com
2. Go to chat.
3. Send a few messages.
4. Mark any message as unread.

Expected Result:

There will be unread marker.

Actual Result:

There is no unread marker.
In self DM, when marking messages as unread, LHN report is not bolded.

Workaround:

Unknown

Platforms:

• Android: Native
• Android: mWeb Chrome
• iOS: Native
• iOS: mWeb Safari
• MacOS: Chrome / Safari
• MacOS: Desktop

Screenshots/Videos

Bug6571535_1723594600338.20240814_081514.mp4

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• nkdengineer | Contributor | 103518252

Issue Owner

Current Issue Owner: @

[melvin-bot]

Triggered auto assignment to @kevinksullivan (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details. Please add this bug to a GH project, as outlined in the SO.

[github-actions]

👋 Friendly reminder that deploy blockers are time-sensitive ⏱ issues! Check out the open `StagingDeployCash` deploy checklist to see the list of PRs included in this release, then work quickly to do one of the following:

1. Identify the pull request that introduced this issue and revert it.
2. Find someone who can quickly fix the issue.
3. Fix the issue yourself.

[IuliiaHerets]

We think that this bug might be related to #vip-vsb

[melvin-bot]

Triggered auto assignment to @techievivek (DeployBlockerCash), see https://stackoverflowteams.com/c/expensify/questions/9980/ for more details.

[nkdengineer]

Edited by proposal-police: This proposal was edited at 2024-08-14 05:39:01 UTC.

Proposal

Please re-state the problem that we are trying to solve in this issue.

There is no unread marker.
In self DM, when marking messages as unread, LHN report is not bolded.

What is the root cause of that problem?

We return early if the report action comes from the current user here. It comes from this PR

App/src/pages/home/report/ReportActionsList.tsx

Lines 225 to 228 in b7f7f1b

	const isFromCurrentUser = accountID === (ReportActionsUtils.isReportPreviewAction(reportAction) ? !reportAction.childLastActorAccountID : reportAction.actorAccountID);
	if (isFromCurrentUser) {
	return false;
	}

In the past, we only checked this condition if messageManuallyMarkedUnread is undefined

What changes do you think we should make in order to solve the problem?

We should bring messageManuallyMarkedUnread back and update the condition to check the unread as we do in the past here

App/src/pages/home/report/ReportActionsList.tsx

Lines 225 to 228 in b7f7f1b

	const isFromCurrentUser = accountID === (ReportActionsUtils.isReportPreviewAction(reportAction) ? !reportAction.childLastActorAccountID : reportAction.actorAccountID);
	if (isFromCurrentUser) {
	return false;
	}

What alternative solutions did you explore? (Optional)

I think we can use unreadMarkerTime as messageManuallyMarkedUnread in the past since the aim of this state is the same as messageManuallyMarkedUnread

App/src/pages/home/report/ReportActionsList.tsx

Lines 207 to 212 in b7f7f1b

	* This should ONLY be updated when the user
	* - switches reports
	* - marks a message as read/unread
	* - reads a new message as it is received
	*/
	const [unreadMarkerTime, setUnreadMarkerTime] = useState(report.lastReadTime ?? '');