From e7c29705613900d411b3e61d606f4385badc4879 Mon Sep 17 00:00:00 2001
From: arkon <eugcheung94@gmail.com>
Date: Sun, 27 Nov 2022 10:43:38 -0500
Subject: [PATCH] Show empty library message properly

Fixes #8632
The `library` map still contains the default category even when "empty".

(cherry picked from commit ac1bed38f93e6b8e51b6f8cc2dae97c7ccb5f9b6)
---
 .../main/java/eu/kanade/tachiyomi/ui/library/LibraryScreen.kt | 4 ++--
 .../java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreen.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreen.kt
index 74004c5df..1f81ba0f6 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreen.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreen.kt
@@ -179,7 +179,7 @@ object LibraryScreen : Screen {
                 return@Scaffold
             }
 
-            if (state.searchQuery.isNullOrEmpty() && state.library.isEmpty()) {
+            if (state.searchQuery.isNullOrEmpty() && state.libraryCount == 0) {
                 val handler = LocalUriHandler.current
                 EmptyScreen(
                     textResource = R.string.information_empty_library,
@@ -201,7 +201,7 @@ object LibraryScreen : Screen {
                 selection = state.selection,
                 contentPadding = contentPadding,
                 currentPage = { screenModel.activeCategory },
-                isLibraryEmpty = state.library.isEmpty(),
+                isLibraryEmpty = state.libraryCount == 0,
                 showPageTabs = state.showCategoryTabs,
                 onChangeCurrentPage = { screenModel.activeCategory = it },
                 onMangaClicked = { router.openManga(it) },
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt
index 3112e8f75..c0b27b5b7 100755
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryScreenModel.kt
@@ -13,6 +13,7 @@ import cafe.adriel.voyager.core.model.coroutineScope
 import eu.kanade.core.prefs.CheckboxState
 import eu.kanade.core.prefs.PreferenceMutableState
 import eu.kanade.core.prefs.asState
+import eu.kanade.core.util.fastDistinctBy
 import eu.kanade.core.util.fastFilter
 import eu.kanade.core.util.fastFilterNot
 import eu.kanade.core.util.fastMapNotNull
@@ -1315,7 +1316,7 @@ class LibraryScreenModel(
         val libraryCount by lazy {
             library
                 .flatMap { (_, v) -> v }
-                .distinctBy { it.libraryManga.manga.id }
+                .fastDistinctBy { it.libraryManga.manga.id }
                 .size
         }