[$500] Web - The group is deleted when there are no messages or the first parent message deleted

[kbecciv]

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Action Performed:

1. Create a group
2. Send any message
3. Hover on message and reply in thread
4. Send any message on thread
5. Delete the parent message, Observed that the chat group disappeared on LHN

Expected Result:

Group chat remains on LHN when there are no messages or messages are deleted.

Actual Result:

Group chat disappeared on LHN

Workaround:

Unknown

Platforms:

Which of our officially supported platforms is this issue occurring on?

• Android / native
• Android / Chrome
• iOS / native
• iOS / Safari
• MacOS / Chrome / Safari
• MacOS / Desktop

Version Number: 1.3.68.13
Reproducible in staging?: y
Reproducible in production?: y
If this was caught during regression testing, add the test name, ID and link from TestRail:
Email or phone of affected tester (no customers):
Logs: https://stackoverflow.com/c/expensify/questions/4856
Notes/Photos/Videos: Any additional supporting documentation

Screen.Recording.2023-09-10.at.11.19.40.1.mov

Recording.4423.mp4

Expensify/Expensify Issue URL:
Issue reported by: @namhihi237
Slack conversation: https://expensify.slack.com/archives/C049HHMV9SM/p1694319570718779

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[melvin-bot]

Job added to Upwork: https://www.upwork.com/jobs/~01ad723399ebef5bd6

[melvin-bot]

Triggered auto assignment to @CortneyOfstad (Bug), see https://stackoverflow.com/c/expensify/questions/14418 for more details.

[melvin-bot]

Bug0 Triage Checklist (Main S/O)

• This "bug" occurs on a supported platform (ensure Platforms in OP are ✅)
• This bug is not a duplicate report (check E/App issues and #expensify-bugs)
  • If it is, comment with a link to the original report, close the issue and add any novel details to the original issue instead
• This bug is reproducible using the reproduction steps in the OP. S/O
  • If the reproduction steps are clear and you're unable to reproduce the bug, check with the reporter and QA first, then close the issue.
  • If the reproduction steps aren't clear and you determine the correct steps, please update the OP.
• This issue is filled out as thoroughly and clearly as possible
  • Pay special attention to the title, results, platforms where the bug occurs, and if the bug happens on staging/production.
• I have reviewed and subscribed to the linked Slack conversation to ensure Slack/Github stay in sync

[melvin-bot]

Triggered auto assignment to @zanyrenney (External), see https://stackoverflow.com/c/expensify/questions/8582 for more details.

[melvin-bot]

Triggered auto assignment to Contributor-plus team member for initial proposal review - @Ollyws (External)

[kbecciv]

Proposal by: @namhihi237
Slack conversation: https://expensify.slack.com/archives/C049HHMV9SM/p1694319570718779

Proposal

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

What is the root cause of that problem?

We are checking whether the report is displayed on LHN here:

App/src/libs/ReportUtils.js

Lines 2847 to 2850 in 6188d7b

	// Hide chats between two users that haven't been commented on from the LNH
	if (excludeEmptyChats && isEmptyChat && isChatReport(report) && !isChatRoom(report) && !isPolicyExpenseChat(report)) {
	return false;
	}

We are checking the isEmptyChat report here

App/src/libs/ReportUtils.js

Lines 2818 to 2820 in 6188d7b

	const lastVisibleMessage = ReportActionsUtils.getLastVisibleMessage(report.reportID);
	const isEmptyChat = !lastVisibleMessage.lastMessageText && !lastVisibleMessage.lastMessageTranslationKey;

Here, if the report has only 1 message and that message has a thread. After deleting the parent message, the report still displays the message [Deleted message] and there is a thread in this message. But we are only checking lastVisibleMessage so the miss case message is deleted but the thread remains.

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

We should update the isEmptyChat checking logic by checking reportActions. If there is any item with childVisibleActionCount > 0. That means the message still has a thread.

    const lastVisibleMessage = ReportActionsUtils.getLastVisibleMessage(report.reportID);
    const reportActions = ReportActionsUtils.getAllReportActions(report.reportID);
    let isEmptyChat = false;
    if (!lastVisibleMessage.lastMessageText && !lastVisibleMessage.lastMessageTranslationKey) {
        const has thread = _.some(reportActions, (reportAction) => reportAction.childCommenterCount > 0);
        isEmptyChat = !hasThread
    }

Result:
https://github.com/Expensify/App/assets/39086067/ddf7244d-16ad-4bf2-bf3d-3b170de3aa8e

What alternative solutions did you explore? (Optional)

N/A

[dukenv0307]

The same root cause with #26791.