Refactor: Enhance conversations and friends features

-   In `ConversationsScreen`, removed `isNeedToScrollToTop` and `onScrolledToTop`, and refactored toolbar container color logic. Added `NoItemsView` for empty conversation lists.
-   In `MainGraph`, added `onMessageClicked` for navigation to message history.
-   In `ApiEvent`, introduced `parseOrNull` for handling unknown event types.
-   In `ConversationsViewModel`, removed `scrollToTop` logic and refactored error handling.
-   In `FriendsViewModel`, refactored error handling and introduced `onErrorConsumed` and `handleError`.
-   In `FriendItem`, added an icon button to initiate sending a message to a friend.
-   In `strings.xml`, added or updated strings for session expiration, log out, refreshing, and empty friend lists.
-   In `RootScreen`, added `onMessageClicked` for navigating to messages.
-   In `FriendsList`, added `onMessageClicked` for handling message clicks.
-   In `MainScreen`, removed unused `MutableSharedFlow`.
-   In `FriendsScreen`, added support for showing errors, added `onMessageClicked`, and replaced `hazeChild` with `hazeEffect` and `hazeSource`.
-   In `FriendsNavigation`, added `onMessageClicked` for handling message clicks.
-   In `ConversationsNavigation`, removed the unused `scrollToTopFlow` parameter.
-   In `ErrorView`, added text alignment.
-   In `NoItemsView`, added support for a button and custom text.
-   In `LongPollUpdatesParser`, replaced try-catch with `parseOrNull`.

feature/conversations/src/main/kotlin/dev/meloda/fast/conversations/ConversationsViewModel.kt

@@ -30,9 +30,7 @@ import dev.meloda.fast.model.LongPollEvent
 import dev.meloda.fast.model.api.domain.VkConversation
 import dev.meloda.fast.network.VkErrorCode
 import dev.meloda.fast.ui.util.ImmutableList
-import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
-import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
@@ -40,7 +38,6 @@ import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.stateIn
 import kotlinx.coroutines.flow.update
-import kotlinx.coroutines.launch
 import kotlin.coroutines.cancellation.CancellationException
 
 interface ConversationsViewModel {
@@ -49,7 +46,6 @@ interface ConversationsViewModel {
     val baseError: StateFlow<BaseError?>
     val currentOffset: StateFlow<Int>
     val canPaginate: StateFlow<Boolean>
-    val scrollToTop: StateFlow<Boolean>
 
     fun onPaginationConditionsMet()
 
@@ -70,10 +66,6 @@ interface ConversationsViewModel {
 
     fun setScrollIndex(index: Int)
     fun setScrollOffset(offset: Int)
-
-
-    fun setScrollToTopFlow(scrollToTopFlow: Flow<Int>)
-    fun onScrolledToTop()
 }
 
 class ConversationsViewModelImpl(
@@ -91,7 +83,6 @@ class ConversationsViewModelImpl(
     override val baseError = MutableStateFlow<BaseError?>(null)
     override val currentOffset = MutableStateFlow(0)
     override val canPaginate = MutableStateFlow(false)
-    override val scrollToTop = MutableStateFlow(false)
 
     // TODO: 22-Dec-24, Danil Nikolaev: rewrite
     private val useContactNames = {
@@ -134,7 +125,7 @@ class ConversationsViewModelImpl(
     }
 
     override fun onRefresh() {
-        baseError.setValue { null }
+        onErrorConsumed()
         loadConversations(offset = 0)
     }
 
@@ -237,20 +228,6 @@ class ConversationsViewModelImpl(
         screenState.setValue { old -> old.copy(scrollOffset = offset) }
     }
 
-    override fun setScrollToTopFlow(scrollToTopFlow: Flow<Int>) {
-        scrollToTopFlow.listenValue(viewModelScope) { index ->
-            if (index == 1) {
-                scrollToTop.emit(true)
-            }
-        }
-    }
-
-    override fun onScrolledToTop() {
-        viewModelScope.launch(Dispatchers.Main) {
-            scrollToTop.emit(false)
-        }
-    }
-
     private fun hideOptions(conversationId: Int) {
         screenState.setValue { old ->
             old.copy(

feature/conversations/src/main/kotlin/dev/meloda/fast/conversations/navigation/ConversationsNavigation.kt

@@ -8,7 +8,6 @@ import dev.meloda.fast.conversations.ConversationsViewModelImpl
 import dev.meloda.fast.conversations.presentation.ConversationsRoute
 import dev.meloda.fast.model.BaseError
 import dev.meloda.fast.ui.extensions.sharedViewModel
-import kotlinx.coroutines.flow.Flow
 import kotlinx.serialization.Serializable
 
 @Serializable
@@ -18,13 +17,11 @@ fun NavGraphBuilder.conversationsScreen(
     onError: (BaseError) -> Unit,
     onConversationItemClicked: (id: Int) -> Unit,
     onPhotoClicked: (url: String) -> Unit,
-    scrollToTopFlow: Flow<Int>,
     navController: NavController,
 ) {
     composable<Conversations> {
         val viewModel: ConversationsViewModel =
             it.sharedViewModel<ConversationsViewModelImpl>(navController = navController)
-        viewModel.setScrollToTopFlow(scrollToTopFlow)
 
         ConversationsRoute(
             onError = onError,

feature/conversations/src/main/kotlin/dev/meloda/fast/conversations/presentation/ConversationsScreen.kt

@@ -77,6 +77,7 @@ import dev.meloda.fast.model.BaseError
 import dev.meloda.fast.ui.components.ErrorView
 import dev.meloda.fast.ui.components.FullScreenLoader
 import dev.meloda.fast.ui.components.MaterialDialog
+import dev.meloda.fast.ui.components.NoItemsView
 import dev.meloda.fast.ui.theme.LocalBottomPadding
 import dev.meloda.fast.ui.theme.LocalHazeState
 import dev.meloda.fast.ui.theme.LocalThemeConfig
@@ -96,7 +97,6 @@ fun ConversationsRoute(
     val screenState by viewModel.screenState.collectAsStateWithLifecycle()
     val baseError by viewModel.baseError.collectAsStateWithLifecycle()
     val canPaginate by viewModel.canPaginate.collectAsStateWithLifecycle()
-    val isNeedToScrollToTop by viewModel.scrollToTop.collectAsStateWithLifecycle()
 
     ConversationsScreen(
         screenState = screenState,
@@ -114,9 +114,7 @@ fun ConversationsRoute(
         onRefresh = viewModel::onRefresh,
         onConversationPhotoClicked = onConversationPhotoClicked,
         setScrollIndex = viewModel::setScrollIndex,
-        setScrollOffset = viewModel::setScrollOffset,
-        isNeedToScrollToTop = isNeedToScrollToTop,
-        onScrolledToTop = viewModel::onScrolledToTop
+        setScrollOffset = viewModel::setScrollOffset
     )
 
     HandleDialogs(
@@ -143,9 +141,7 @@ fun ConversationsScreen(
     onRefresh: () -> Unit = {},
     onConversationPhotoClicked: (url: String) -> Unit = {},
     setScrollIndex: (Int) -> Unit = {},
-    setScrollOffset: (Int) -> Unit = {},
-    isNeedToScrollToTop: Boolean = false,
-    onScrolledToTop: () -> Unit = {}
+    setScrollOffset: (Int) -> Unit = {}
 ) {
     val view = LocalView.current
     val currentTheme = LocalThemeConfig.current
@@ -159,14 +155,6 @@ fun ConversationsScreen(
         initialFirstVisibleItemScrollOffset = screenState.scrollOffset
     )
 
-    LaunchedEffect(isNeedToScrollToTop) {
-        if (isNeedToScrollToTop) {
-            listState.scrollToItem(0)
-            onScrolledToTop()
-
-        }
-    }
-
     LaunchedEffect(listState) {
         snapshotFlow { listState.firstVisibleItemIndex }
             .debounce(500L)
@@ -207,10 +195,10 @@ fun ConversationsScreen(
 
     val toolbarContainerColor by animateColorAsState(
         targetValue =
-        if (currentTheme.enableBlur || !listState.canScrollBackward)
-            MaterialTheme.colorScheme.surface
-        else
-            MaterialTheme.colorScheme.surfaceColorAtElevation(3.dp),
+            if (currentTheme.enableBlur || !listState.canScrollBackward)
+                MaterialTheme.colorScheme.surface
+            else
+                MaterialTheme.colorScheme.surfaceColorAtElevation(3.dp),
         label = "toolbarColorAlpha",
         animationSpec = tween(durationMillis = 50)
     )
@@ -343,8 +331,8 @@ fun ConversationsScreen(
                 when (baseError) {
                     is BaseError.SessionExpired -> {
                         ErrorView(
-                            text = "Session expired",
-                            buttonText = "Log out",
+                            text = stringResource(UiR.string.session_expired),
+                            buttonText = stringResource(UiR.string.action_log_out),
                             onButtonClick = onSessionExpiredLogOutButtonClicked
                         )
                     }
@@ -352,7 +340,7 @@ fun ConversationsScreen(
                     is BaseError.SimpleError -> {
                         ErrorView(
                             text = baseError.message,
-                            buttonText = "Try again",
+                            buttonText = stringResource(UiR.string.try_again),
                             onButtonClick = onRefresh
                         )
                     }
@@ -398,6 +386,13 @@ fun ConversationsScreen(
                         padding = padding,
                         onPhotoClicked = onConversationPhotoClicked
                     )
+
+                    if (screenState.conversations.isEmpty()) {
+                        NoItemsView(
+                            buttonText = stringResource(UiR.string.action_refresh),
+                            onButtonClick = onRefresh
+                        )
+                    }
                 }
             }
         }