fix: reusing PagingData crash [WPB-15055][WPB-15079][WPB-15064] 🍒

[saleniuk]

WPB-15055 [Android] Crash when opening connection request from paginated list

This PR was manually cherry-picked based on the following PR:

• fix: reusing PagingData crash [WPB-15055][WPB-15079][WPB-15064] #3758

Original PR description:

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

There are crashes related to reusing PagingData flow when doing some actions on paginated conversation list screen, like accepting legal hold request, answering 1:1 call or opening pending connection request which can fetch user data.

Causes (Optional)

Each action that modifies (or even puts the same exact data but just requires executing insert, update or delete query) a table that then affects paginated conversation list query, makes this query dirty and executes it again, which reloads the list.
When using combine, it creates a new instance of flow, so if the combine is used after PagingData is created then if the data is changed and emitted by the flow that's combined, it will re-use the same PagingData and put it into a new flow, so cachedIn won't cache the flow properly and it will crash because PagingData cannot be used twice.

Solutions

Move combine "above" the PagingData flow so that each time a new value is emitted, it will always create a new PagingData for the new flow and also cachedIn will be used correctly.
Simplify showLoading parameter to be a simple logical equation rather than a state. Make use of mocked previewConversationFoldersFlow with proper LoadStates to represent loaded data instead of using specific initiallyLoaded parameter.
Fix rememberSearchbarState so that it actually saves the searchQueryTextState.

Testing

Test Coverage (Optional)

• I have added automated test to this contribution

How to Test

The crash was happening when opening pending connection request (most frequently), answering 1:1 call or accepting legal hold request, so these actions shouldn't crash the app. Also, after opening connection request or 1:1 conversation, if your or that user's data hasn't changed since the last fetch, then it shouldn't refresh the conversation list when navigating back.

Attachments (Optional)

Before	After
refreshing_when_going_back.mp4	no_refreshing_when_going_back.mp4
pagination_crash.mp4

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 42.55319% with 27 lines in your changes missing coverage. Please review.

Project coverage is 45.82%. Comparing base (9d5c57c) to head (c38e61f).

Files with missing lines	Patch %	Lines
...ome/conversationslist/ConversationListViewModel.kt	42.55%	23 Missing and 4 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3778      +/-   ##
===========================================
+ Coverage    45.80%   45.82%   +0.02%     
===========================================
  Files          483      483              
  Lines        16513    16522       +9     
  Branches      2783     2783              
===========================================
+ Hits          7563     7571       +8     
- Misses        8170     8171       +1     
  Partials       780      780              

Files with missing lines	Coverage Δ
...ome/conversationslist/ConversationListViewModel.kt	33.33% <42.55%> (+1.91%)	⬆️

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

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Built wire-android-staging-compat-pr-3778.apk is available for download

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Built wire-android-dev-debug-pr-3778.apk is available for download