Implement scroll to top in friends and conversations screens

feature/friends/src/main/kotlin/dev/meloda/fast/friends/navigation/FriendsNavigation.kt

@@ -12,13 +12,15 @@ object Friends
 fun NavGraphBuilder.friendsScreen(
     onError: (BaseError) -> Unit,
     onPhotoClicked: (url: String) -> Unit,
-    onMessageClicked: (userId: Int) -> Unit
+    onMessageClicked: (userId: Int) -> Unit,
+    onScrolledToTop: () -> Unit
 ) {
     composable<Friends> {
         FriendsRoute(
             onError = onError,
             onPhotoClicked = onPhotoClicked,
-            onMessageClicked = onMessageClicked
+            onMessageClicked = onMessageClicked,
+            onScrolledToTop = onScrolledToTop
         )
     }
 }

feature/friends/src/main/kotlin/dev/meloda/fast/friends/presentation/FriendsScreen.kt

@@ -29,12 +29,14 @@ import dev.chrisbanes.haze.hazeSource
 import dev.meloda.fast.friends.FriendsViewModel
 import dev.meloda.fast.friends.FriendsViewModelImpl
 import dev.meloda.fast.friends.OnlineFriendsViewModelImpl
+import dev.meloda.fast.friends.navigation.Friends
 import dev.meloda.fast.model.BaseError
 import dev.meloda.fast.ui.R
 import dev.meloda.fast.ui.components.ErrorView
 import dev.meloda.fast.ui.components.FullScreenLoader
 import dev.meloda.fast.ui.components.NoItemsView
 import dev.meloda.fast.ui.theme.LocalHazeState
+import dev.meloda.fast.ui.theme.LocalScrollToTop
 import dev.meloda.fast.ui.theme.LocalThemeConfig
 import dev.meloda.fast.ui.util.ImmutableList
 import kotlinx.coroutines.flow.collectLatest
@@ -51,7 +53,8 @@ fun FriendsScreen(
     onSessionExpiredLogOutButtonClicked: () -> Unit = {},
     onPhotoClicked: (url: String) -> Unit = {},
     onMessageClicked: (userId: Int) -> Unit = {},
-    setCanScrollBackward: (Boolean) -> Unit = {}
+    setCanScrollBackward: (Boolean) -> Unit = {},
+    onScrolledToTop: () -> Unit = {}
 ) {
     val context: Context = LocalContext.current
     val viewModel: FriendsViewModel =
@@ -93,6 +96,17 @@ fun FriendsScreen(
         initialFirstVisibleItemScrollOffset = screenState.scrollOffset
     )
 
+    val scrollToTop = LocalScrollToTop.current[Friends] ?: false
+    LaunchedEffect(scrollToTop) {
+        if (scrollToTop) {
+            if (listState.firstVisibleItemIndex > 14) {
+                listState.scrollToItem(14)
+            }
+            listState.animateScrollToItem(0)
+            onScrolledToTop()
+        }
+    }
+
     LaunchedEffect(listState) {
         snapshotFlow { listState.firstVisibleItemIndex }
             .debounce(250L)

feature/friends/src/main/kotlin/dev/meloda/fast/friends/presentation/RootFriendsScreen.kt

@@ -58,6 +58,7 @@ fun FriendsRoute(
     onError: (BaseError) -> Unit,
     onPhotoClicked: (url: String) -> Unit,
     onMessageClicked: (userId: Int) -> Unit,
+    onScrolledToTop: () -> Unit
 ) {
     val scope = rememberCoroutineScope()
     val currentTheme = LocalThemeConfig.current
@@ -236,7 +237,8 @@ fun FriendsRoute(
                 onSessionExpiredLogOutButtonClicked = { onError(BaseError.SessionExpired) },
                 onPhotoClicked = onPhotoClicked,
                 onMessageClicked = onMessageClicked,
-                setCanScrollBackward = { canScrollBackward = it }
+                setCanScrollBackward = { canScrollBackward = it },
+                onScrolledToTop = onScrolledToTop
             )
         }
     }