fix: member list reactivity and online category size

Signed-off-by: Infi <wingit@geist.ga>

app/src/main/java/chat/revolt/sheets/MemberListSheet.kt

@@ -31,6 +31,7 @@ import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshotFlow
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Brush
@@ -55,6 +56,7 @@ import chat.revolt.components.generic.UserAvatar
 import chat.revolt.components.generic.presenceFromStatus
 import dagger.hilt.android.lifecycle.HiltViewModel
 import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.distinctUntilChanged
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
@@ -127,6 +129,7 @@ class MemberListSheetViewModel @Inject constructor(
             }
 
             // Online
+            if (!categories[defaultCategoryName].isNullOrEmpty()) {
                 fullItemList.add(
                     MemberListItem.CategoryItem(
                         defaultCategoryName,
@@ -136,9 +139,10 @@ class MemberListSheetViewModel @Inject constructor(
                 categories[defaultCategoryName]?.forEach { member ->
                     fullItemList.add(MemberListItem.MemberItem(member))
                 }
+            }
 
             // Offline
-            if (categories[offlineCategoryName].isNullOrEmpty()) return@launch
+            if (!categories[offlineCategoryName].isNullOrEmpty()) {
                 fullItemList.add(
                     MemberListItem.CategoryItem(
                         offlineCategoryName,
@@ -151,6 +155,7 @@ class MemberListSheetViewModel @Inject constructor(
             }
         }
     }
+}
 
 @OptIn(ExperimentalFoundationApi::class, ExperimentalMaterial3Api::class)
 @Composable
@@ -161,9 +166,12 @@ fun MemberListSheet(
     var showUserContextSheet by remember { mutableStateOf(false) }
     var userContextSheetTarget by remember { mutableStateOf("") }
 
-    LaunchedEffect(serverId) {
+    // We use LaunchedEffect to make sure that this is called every time any of the users status changes
+    LaunchedEffect(RevoltAPI.userCache) {
+        snapshotFlow { RevoltAPI.userCache }.distinctUntilChanged().collect {
             viewModel.fetchMemberList(serverId)
         }
+    }
 
     if (showUserContextSheet) {
         val userContextSheetState = rememberModalBottomSheetState()