feat(library): Hide empty library tabs when searching/filtering (#1069)

* feat(library): Hide empty library tabs when searching/filtering

* Add search-global to Empty screen in Library

* Simplify conditional logic

* combine conditional flow

* Optimize code

* Simplified the code

* Simplified the code

app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt

@@ -205,10 +205,11 @@ class LibraryScreenModel(
                 combine(
                     getCategoriesPerLibraryManga.subscribe(),
                     state.map { it.filterCategory }.distinctUntilChanged(),
-                    ::Pair,
+                    state.map { it.searchQuery.isNullOrBlank() && !it.hasActiveFilters }.distinctUntilChanged(),
+                    ::Triple,
                 ),
                 // KMK <--
-            ) { (searchQuery, library, _), (tracks, trackingFilter), (groupType, sort), (categoriesPerManga, filterCategory) ->
+            ) { (searchQuery, library, _), (tracks, trackingFilter), (groupType, sort), (categoriesPerManga, filterCategory, noActiveFilterOrSearch) ->
                 library
                     // SY -->
                     .applyGrouping(/* KMK --> */ if (filterCategory) LibraryGroup.UNGROUPED else /* KMK <-- */ groupType)
@@ -238,6 +239,24 @@ class LibraryScreenModel(
                             value
                         }
                     }
+                    // KMK -->
+                    .filter {
+                        noActiveFilterOrSearch || it.value.isNotEmpty()
+                    }
+                    .let {
+                        it.ifEmpty {
+                            mapOf(
+                                Category(
+                                    0,
+                                    preferences.context.stringResource(MR.strings.default_category),
+                                    0,
+                                    0,
+                                    false,
+                                ) to emptyList(),
+                            )
+                        }
+                    }
+                // KMK <--
             }
                 .collectLatest {
                     mutableState.update { state ->

presentation-core/src/main/java/tachiyomi/presentation/core/screens/EmptyScreen.kt

@@ -90,7 +90,7 @@ fun EmptyScreen(
         )
 
         // KMK -->
-        help?.let { help() }
+        help?.invoke()
         // KMK <--
 
         if (!actions.isNullOrEmpty()) {