fun HomeRoute()

in JetNews/app/src/main/java/com/example/jetnews/ui/home/HomeRoute.kt [85:169]
75 lines of code
1 McCabe index (conditional complexity)

fun HomeRoute(
    uiState: HomeUiState,
    isExpandedScreen: Boolean,
    onToggleFavorite: (String) -> Unit,
    onSelectPost: (String) -> Unit,
    onRefreshPosts: () -> Unit,
    onErrorDismiss: (Long) -> Unit,
    onInteractWithFeed: () -> Unit,
    onInteractWithArticleDetails: (String) -> Unit,
    onSearchInputChanged: (String) -> Unit,
    openDrawer: () -> Unit,
    scaffoldState: ScaffoldState
) {
    // Construct the lazy list states for the list and the details outside of deciding which one to
    // show. This allows the associated state to survive beyond that decision, and therefore
    // we get to preserve the scroll throughout any changes to the content.
    val homeListLazyListState = rememberLazyListState()
    val articleDetailLazyListStates = when (uiState) {
        is HomeUiState.HasPosts -> uiState.postsFeed.allPosts
        is HomeUiState.NoPosts -> emptyList()
    }.associate { post ->
        key(post.id) {
            post.id to rememberLazyListState()
        }
    }

    val homeScreenType = getHomeScreenType(isExpandedScreen, uiState)
    when (homeScreenType) {
        HomeScreenType.FeedWithArticleDetails -> {
            HomeFeedWithArticleDetailsScreen(
                uiState = uiState,
                showTopAppBar = !isExpandedScreen,
                onToggleFavorite = onToggleFavorite,
                onSelectPost = onSelectPost,
                onRefreshPosts = onRefreshPosts,
                onErrorDismiss = onErrorDismiss,
                onInteractWithList = onInteractWithFeed,
                onInteractWithDetail = onInteractWithArticleDetails,
                openDrawer = openDrawer,
                homeListLazyListState = homeListLazyListState,
                articleDetailLazyListStates = articleDetailLazyListStates,
                scaffoldState = scaffoldState,
                onSearchInputChanged = onSearchInputChanged,
            )
        }
        HomeScreenType.Feed -> {
            HomeFeedScreen(
                uiState = uiState,
                showTopAppBar = !isExpandedScreen,
                onToggleFavorite = onToggleFavorite,
                onSelectPost = onSelectPost,
                onRefreshPosts = onRefreshPosts,
                onErrorDismiss = onErrorDismiss,
                openDrawer = openDrawer,
                homeListLazyListState = homeListLazyListState,
                scaffoldState = scaffoldState,
                onSearchInputChanged = onSearchInputChanged,
            )
        }
        HomeScreenType.ArticleDetails -> {
            // Guaranteed by above condition for home screen type
            check(uiState is HomeUiState.HasPosts)

            ArticleScreen(
                post = uiState.selectedPost,
                isExpandedScreen = isExpandedScreen,
                onBack = onInteractWithFeed,
                isFavorite = uiState.favorites.contains(uiState.selectedPost.id),
                onToggleFavorite = {
                    onToggleFavorite(uiState.selectedPost.id)
                },
                lazyListState = articleDetailLazyListStates.getValue(
                    uiState.selectedPost.id
                )
            )

            // If we are just showing the detail, have a back press switch to the list.
            // This doesn't take anything more than notifying that we "interacted with the list"
            // since that is what drives the display of the feed
            BackHandler {
                onInteractWithFeed()
            }
        }
    }
}