NTP-13179 | unpaid bills list index out of bound crash fix (#13674)

android/navi-bbps/src/main/kotlin/com/navi/bbps/feature/category/ui/RenderBillCategoriesScreen.kt

@@ -69,13 +69,16 @@ import com.navi.bbps.feature.category.model.view.MyBillCardInfoState
 import com.navi.bbps.feature.category.model.view.RewardDataEntity
 import com.navi.bbps.feature.mybills.model.view.MyBillEntity
 import com.navi.common.R as CommonR
+import com.navi.common.utils.log
 import com.navi.design.common.NaviVerticalGrid
 import com.navi.design.font.FontWeightEnum
 import com.navi.design.theme.ABABAB
 import com.navi.design.theme.getFontWeight
 import com.navi.design.theme.ttComposeFontFamily
 import com.navi.naviwidgets.extensions.NaviText
+import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.flow.collectLatest
+import kotlinx.coroutines.flow.debounce
 
 typealias CategoryGroupId = String
 
@@ -202,7 +205,7 @@ fun PendingCountSection(
     Spacer(modifier = Modifier.height(16.dp))
 }
 
-@OptIn(ExperimentalFoundationApi::class)
+@OptIn(ExperimentalFoundationApi::class, FlowPreview::class)
 @Composable
 internal fun PendingBillCarouselSection(
     nonDismissedUnpaidBills: List<MyBillEntity>,
@@ -215,12 +218,10 @@ internal fun PendingBillCarouselSection(
     val itemWidth by
         remember(nonDismissedUnpaidBills.size) {
             derivedStateOf {
-                if (nonDismissedUnpaidBills.isEmpty()) {
-                    configuration.screenWidthDp.dp
-                } else if (nonDismissedUnpaidBills.size == 1) {
-                    configuration.screenWidthDp.dp - 16.dp
-                } else {
-                    configuration.screenWidthDp.dp - 32.dp
+                when (nonDismissedUnpaidBills.size) {
+                    0 -> configuration.screenWidthDp.dp
+                    1 -> maxOf(configuration.screenWidthDp.dp - 16.dp, 0.dp)
+                    else -> maxOf(configuration.screenWidthDp.dp - 32.dp, 0.dp)
                 }
             }
         }
@@ -229,9 +230,16 @@ internal fun PendingBillCarouselSection(
 
     LaunchedEffect(listState, nonDismissedUnpaidBills.size) {
         snapshotFlow { listState.firstVisibleItemIndex }
+            .debounce(50)
             .collectLatest { index ->
-                if (index < nonDismissedUnpaidBills.size) {
-                    listState.scrollToItem(index)
+                try {
+                    if (index < nonDismissedUnpaidBills.size) {
+                        listState.scrollToItem(index)
+                    } else {
+                        listState.scrollToItem(0) // Safe fallback
+                    }
+                } catch (e: Exception) {
+                    e.log()
                 }
             }
     }