Simplify items appending operation

androidApp/src/main/java/bou/amine/apps/readerforselfossv2/android/HomeActivity.kt

@@ -893,9 +893,9 @@ class HomeActivity : AppCompatActivity(), SearchView.OnQueryTextListener, DIAwar
             binding.swipeRefreshLayout.isRefreshing = true
             repository.displayedItems = itemType
             items = if (appendResults) {
-                repository.getNewerItems()
-            } else {
                 repository.getOlderItems()
+            } else {
+                repository.getNewerItems()
             }
             binding.swipeRefreshLayout.isRefreshing = false
             handleListResult()

shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/repository/RepositoryImpl.kt

@@ -83,8 +83,7 @@ class RepositoryImpl(private val api: SelfossApi, private val apiDetails: ApiDet
     private fun appendItems(fetchedItems: List<SelfossModel.Item>) {
         // TODO: Store in DB if enabled by user
         val fetchedIDS = fetchedItems.map { it.id }
-        val tmpItems = items
-        tmpItems.removeAll{ it.id in fetchedIDS }
+        val tmpItems = ArrayList(items.filterNot { it.id in fetchedIDS })
         tmpItems.addAll(fetchedItems)
         sortItems(tmpItems)
         items = tmpItems