Start refactoring some business logic into view models #1969
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As Element Call grows in complexity, it has become a pain point that our business logic remains so tightly coupled to the UI code. In particular, this has made testing difficult, and the complex semantics of React hooks are not a great match for arbitrary business logic. Here, I show the beginnings of what it would look like for us to adopt the MVVM pattern. I've created a CallViewModel and TileViewModel that expose their state to the UI as rxjs Observables, as well as a couple of helper functions for consuming view models in React code. This should contain no user-visible changes, but we need to watch out for regressions particularly around focus switching and promotion of speakers, because this was the logic I chose to refactor first.
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## livekit #1969 +/- ##
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Coverage 24.67% 24.67%
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Files 48 48
Lines 2383 2383
Branches 438 438
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Hits 588 588
Misses 1744 1744
Partials 51 51
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I'm using this PR to get a non-broken Netlify build