From 37cb4ec0c22d9b020afa473e593a074e2b8d5694 Mon Sep 17 00:00:00 2001
From: arkon <eugcheung94@gmail.com>
Date: Fri, 28 Oct 2022 18:29:00 -0400
Subject: [PATCH] Don't filter out partially read chapters when marking as
 unread

Fixes #8313
---
 .../eu/kanade/domain/chapter/interactor/SetReadStatus.kt   | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/eu/kanade/domain/chapter/interactor/SetReadStatus.kt b/app/src/main/java/eu/kanade/domain/chapter/interactor/SetReadStatus.kt
index ed196965c9..21199cf3b9 100644
--- a/app/src/main/java/eu/kanade/domain/chapter/interactor/SetReadStatus.kt
+++ b/app/src/main/java/eu/kanade/domain/chapter/interactor/SetReadStatus.kt
@@ -27,7 +27,12 @@ class SetReadStatus(
     }
 
     suspend fun await(read: Boolean, vararg chapters: Chapter): Result = withNonCancellableContext {
-        val chaptersToUpdate = chapters.filterNot { it.read == read }
+        val chaptersToUpdate = chapters.filter {
+            when (read) {
+                true -> !it.read
+                false -> it.read || it.lastPageRead > 0
+            }
+        }
         if (chaptersToUpdate.isEmpty()) {
             return@withNonCancellableContext Result.NoChapters
         }