Fix a crash in the media events screen by storing the active timeline context. (#3746)
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@@ -28,7 +28,7 @@ struct MediaEventsTimelineScreenViewState: BindableState {
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var groups = [MediaEventsTimelineGroup]()
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var activeTimelineContextProvider: (() -> TimelineViewModel.Context)!
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var activeTimelineContext: TimelineViewModel.Context
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var bindings: MediaEventsTimelineScreenViewStateBindings
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}
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@@ -37,7 +37,7 @@ class MediaEventsTimelineScreenViewModel: MediaEventsTimelineScreenViewModelType
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init(mediaTimelineViewModel: TimelineViewModelProtocol,
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filesTimelineViewModel: TimelineViewModelProtocol,
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initialViewState: MediaEventsTimelineScreenViewState = .init(bindings: .init(screenMode: .media)),
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initialScreenMode: MediaEventsTimelineScreenMode = .media,
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mediaProvider: MediaProviderProtocol,
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userIndicatorController: UserIndicatorControllerProtocol,
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appMediator: AppMediatorProtocol) {
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@@ -47,14 +47,24 @@ class MediaEventsTimelineScreenViewModel: MediaEventsTimelineScreenViewModelType
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self.userIndicatorController = userIndicatorController
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self.appMediator = appMediator
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super.init(initialViewState: initialViewState, mediaProvider: mediaProvider)
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state.activeTimelineContextProvider = { [weak self] in
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guard let self else { fatalError() }
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return activeTimelineViewModel.context
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let activeTimelineContext = switch initialScreenMode {
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case .media: mediaTimelineViewModel.context
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case .files: filesTimelineViewModel.context
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}
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super.init(initialViewState: .init(activeTimelineContext: activeTimelineContext, bindings: .init(screenMode: initialScreenMode)), mediaProvider: mediaProvider)
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context.$viewState.map(\.bindings.screenMode)
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.removeDuplicates()
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.map {
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switch $0 {
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case .media: mediaTimelineViewModel.context
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case .files: filesTimelineViewModel.context
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}
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}
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.weakAssign(to: \.state.activeTimelineContext, on: self)
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.store(in: &cancellables)
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mediaTimelineViewModel.context.$viewState.sink { [weak self] timelineViewState in
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guard let self, state.bindings.screenMode == .media else {
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return
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@@ -18,8 +18,8 @@ struct MediaEventsTimelineScreen: View {
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// Doesn't play well with the transformed scrollView
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.toolbarBackground(.visible, for: .navigationBar)
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.toolbar { toolbar }
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.environmentObject(context.viewState.activeTimelineContextProvider())
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.environment(\.timelineContext, context.viewState.activeTimelineContextProvider())
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.environmentObject(context.viewState.activeTimelineContext)
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.environment(\.timelineContext, context.viewState.activeTimelineContext)
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.onChange(of: context.screenMode) { _, _ in
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context.send(viewAction: .changedScreenMode)
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}
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@@ -137,7 +137,7 @@ struct MediaEventsTimelineScreen: View {
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AudioMediaEventsTimelineView(timelineItem: timelineItem)
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case .voice(let timelineItem):
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let defaultPlayerState = AudioPlayerState(id: .timelineItemIdentifier(timelineItem.id), title: L10n.commonVoiceMessage, duration: 0)
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let playerState = context.viewState.activeTimelineContextProvider().viewState.audioPlayerStateProvider?(timelineItem.id) ?? defaultPlayerState
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let playerState = context.viewState.activeTimelineContext.viewState.audioPlayerStateProvider?(timelineItem.id) ?? defaultPlayerState
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VoiceMessageMediaEventsTimelineView(timelineItem: timelineItem, playerState: playerState)
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default:
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EmptyView()
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@@ -251,7 +251,7 @@ struct MediaEventsTimelineScreen_Previews: PreviewProvider, TestablePreview {
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screenMode: MediaEventsTimelineScreenMode) -> MediaEventsTimelineScreenViewModel {
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MediaEventsTimelineScreenViewModel(mediaTimelineViewModel: makeTimelineViewModel(empty: empty),
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filesTimelineViewModel: makeTimelineViewModel(empty: empty),
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initialViewState: .init(bindings: .init(screenMode: screenMode)),
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initialScreenMode: screenMode,
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mediaProvider: MediaProviderMock(configuration: .init()),
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userIndicatorController: UserIndicatorControllerMock(),
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appMediator: AppMediatorMock())
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