fix: crashes on audio message playback [WPB-16195]

[saleniuk]

WPB-16195 [Android]Audio not available or app crashes on playback

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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

The app crashes as soon as the user taps the play button on audio message.

Causes (Optional)

Race condition when fetching audio asset file - it can be executed multiple times at once as it's also called to fetch waves mask and then asset file can be overwritten and broken (created but empty for instance) resulting in a crash when trying to play empty file.
The "fetch waves mask" action can also be called multiple times for each message as it's called every time paging data is updated. The whole map of audio states is propagated through all composables all way down from the screen to the AudioMessage item and it's not stable so it can be also prone to more unneeded recompositions.
ConversationAudioMessagePlayer dropping and losing some of the crucial states emitted because of DROP_OLDEST and for instance making the audio message be played without any indication on the screen.

Solutions

Secured getAssetMessage by keeping the deferred until it's completed so that each execution during that time will reuse the same deferred and it won't be called multiple times at the same time - no issues with overwriting the file and no unnecessary requests.
Created dedicated scoped AudioMessageViewModel which handles the state for the given message and executes calls to play the audio associated with that message, change the audio speed or fetch waves mask for that audio so that it happens only once and is kept in the view model. Thanks to that, a map with all audio states doesn't need to be passed all the way to the AudioMessage but instead it uses state from injected scoped AudioMessageViewModel.
Replaced DROP_OLDEST with SUSPEND in ConversationAudioMessagePlayer to not lose any state updates.

Testing

Test Coverage (Optional)

• I have added automated test to this contribution

How to Test

Receive audio messages and try to play them.

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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 88.88889% with 8 lines in your changes missing coverage. Please review.

Project coverage is 45.74%. Comparing base (ca62a1a) to head (747cdbd).

Files with missing lines	Patch %	Lines
...ndroid/media/audiomessage/AudioMessageViewModel.kt	89.74%	4 Missing ⚠️
...dia/audiomessage/ConversationAudioMessagePlayer.kt	88.88%	2 Missing and 1 partial ⚠️
...d/ui/home/conversations/media/FileAssetsContent.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                  Coverage Diff                  @@
##           release/candidate    #3917      +/-   ##
=====================================================
+ Coverage              45.59%   45.74%   +0.15%     
=====================================================
  Files                    491      492       +1     
  Lines                  17078    17097      +19     
  Branches                2845     2845              
=====================================================
+ Hits                    7786     7821      +35     
+ Misses                  8500     8483      -17     
- Partials                 792      793       +1     

Files with missing lines	Coverage Δ
...rsations/messages/ConversationMessagesViewModel.kt	68.94% <100.00%> (+0.19%)	⬆️
...rsations/messages/ConversationMessagesViewState.kt	100.00% <100.00%> (ø)
...conversations/messages/item/MessageClickActions.kt	0.00% <ø> (ø)
.../conversations/messages/item/RegularMessageItem.kt	0.00% <ø> (ø)
...tions/model/messagetypes/audio/AudioMessageType.kt	0.00% <ø> (ø)
...d/ui/home/conversations/media/FileAssetsContent.kt	0.00% <0.00%> (ø)
...dia/audiomessage/ConversationAudioMessagePlayer.kt	65.66% <88.88%> (+4.48%)	⬆️
...ndroid/media/audiomessage/AudioMessageViewModel.kt	89.74% <89.74%> (ø)

... and 2 files with indirect coverage changes

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[github-actions]

Built wire-android-staging-compat-pr-3917.apk is available for download

[sonarqubecloud]

Quality Gate passed

Issues
5 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

[github-actions]

Built wire-android-staging-compat-pr-3917.apk is available for download