Auto-scroll to top when new live chat messages arrive

Author: Ecomont

app/src/main/java/org/schabi/newpipe/ui/components/video/comment/CommentInfo.kt

@@ -13,7 +13,7 @@ class CommentInfo(
     val nextPage: Page?,
     val commentCount: Int,
     val isCommentsDisabled: Boolean,
-    val isLiveChat: Boolean = false
+    val isLiveChat: Boolean
 ) {
     constructor(commentsInfo: CommentsInfo) : this(
         commentsInfo.serviceId,

app/src/main/java/org/schabi/newpipe/ui/components/video/comment/CommentSection.kt

@@ -12,6 +12,7 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
@@ -59,6 +60,14 @@ private fun CommentSection(
     val nestedScrollInterop = rememberNestedScrollInteropConnection()
     val state = rememberLazyListState()
 
+    // Auto-scroll to top when new live chat messages arrive
+    val isLiveChat = uiState is Resource.Success && uiState.data.isLiveChat
+    LaunchedEffect(liveChatItems.size) {
+        if (isLiveChat && liveChatItems.isNotEmpty()) {
+            state.scrollToItem(0)
+        }
+    }
+
     LazyColumnThemedScrollbar(state = state) {
         LazyColumn(
             modifier = Modifier

app/src/main/java/org/schabi/newpipe/viewmodels/CommentsViewModel.kt

@@ -17,7 +17,6 @@ import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.filterIsInstance
 import kotlinx.coroutines.flow.flatMapLatest
-import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.stateIn