Use same chapter sorting logic in manga and reader views

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaController.kt

@@ -1020,23 +1020,11 @@ class MangaController :
 
     // OVERFLOW MENU DIALOGS
 
-    private fun getUnreadChaptersSorted(): List<ChapterItem> {
-        val chapters = presenter.chapters
-            .sortedWith(presenter.getChapterSort())
-            .filter { !it.read && it.status == Download.State.NOT_DOWNLOADED }
-            .distinctBy { it.name }
-        return if (presenter.sortDescending()) {
-            chapters.reversed()
-        } else {
-            chapters
-        }
-    }
-
     private fun downloadChapters(choice: Int) {
         val chaptersToDownload = when (choice) {
-            R.id.download_next -> getUnreadChaptersSorted().take(1)
-            R.id.download_next_5 -> getUnreadChaptersSorted().take(5)
-            R.id.download_next_10 -> getUnreadChaptersSorted().take(10)
+            R.id.download_next -> presenter.getUnreadChaptersSorted().take(1)
+            R.id.download_next_5 -> presenter.getUnreadChaptersSorted().take(5)
+            R.id.download_next_10 -> presenter.getUnreadChaptersSorted().take(10)
             R.id.download_custom -> {
                 showCustomDownloadDialog()
                 return
@@ -1059,7 +1047,7 @@ class MangaController :
     }
 
     override fun downloadCustomChapters(amount: Int) {
-        val chaptersToDownload = getUnreadChaptersSorted().take(amount)
+        val chaptersToDownload = presenter.getUnreadChaptersSorted().take(amount)
         if (chaptersToDownload.isNotEmpty()) {
             downloadChapters(chaptersToDownload)
         }

app/src/main/java/eu/kanade/tachiyomi/ui/manga/MangaPresenter.kt

@@ -26,6 +26,7 @@ import eu.kanade.tachiyomi.ui.base.presenter.BasePresenter
 import eu.kanade.tachiyomi.ui.manga.chapter.ChapterItem
 import eu.kanade.tachiyomi.ui.manga.track.TrackItem
 import eu.kanade.tachiyomi.util.chapter.ChapterSettingsHelper
+import eu.kanade.tachiyomi.util.chapter.getChapterSort
 import eu.kanade.tachiyomi.util.chapter.syncChaptersWithSource
 import eu.kanade.tachiyomi.util.chapter.syncChaptersWithTrackServiceTwoWay
 import eu.kanade.tachiyomi.util.isLocal
@@ -433,25 +434,7 @@ class MangaPresenter(
             observable = observable.filter { !it.bookmark }
         }
 
-        return observable.toSortedList(getChapterSort())
-    }
-
-    fun getChapterSort(): (Chapter, Chapter) -> Int {
-        return when (manga.sorting) {
-            Manga.CHAPTER_SORTING_SOURCE -> when (sortDescending()) {
-                true -> { c1, c2 -> c1.source_order.compareTo(c2.source_order) }
-                false -> { c1, c2 -> c2.source_order.compareTo(c1.source_order) }
-            }
-            Manga.CHAPTER_SORTING_NUMBER -> when (sortDescending()) {
-                true -> { c1, c2 -> c2.chapter_number.compareTo(c1.chapter_number) }
-                false -> { c1, c2 -> c1.chapter_number.compareTo(c2.chapter_number) }
-            }
-            Manga.CHAPTER_SORTING_UPLOAD_DATE -> when (sortDescending()) {
-                true -> { c1, c2 -> c2.date_upload.compareTo(c1.date_upload) }
-                false -> { c1, c2 -> c1.date_upload.compareTo(c2.date_upload) }
-            }
-            else -> throw NotImplementedError("Unimplemented sorting method")
-        }
+        return observable.toSortedList(getChapterSort(manga))
     }
 
     /**
@@ -478,7 +461,7 @@ class MangaPresenter(
      * Returns the next unread chapter or null if everything is read.
      */
     fun getNextUnreadChapter(): ChapterItem? {
-        val chapters = chapters.sortedWith(getChapterSort())
+        val chapters = chapters.sortedWith(getChapterSort(manga))
         return if (sortDescending()) {
             return chapters.findLast { !it.read }
         } else {
@@ -486,6 +469,18 @@ class MangaPresenter(
         }
     }
 
+    fun getUnreadChaptersSorted(): List<ChapterItem> {
+        val chapters = chapters
+            .sortedWith(getChapterSort(manga))
+            .filter { !it.read && it.status == Download.State.NOT_DOWNLOADED }
+            .distinctBy { it.name }
+        return if (sortDescending()) {
+            chapters.reversed()
+        } else {
+            chapters
+        }
+    }
+
     /**
      * Mark the selected chapter list as read/unread.
      * @param selectedChapters the list of selected chapters.

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ChapterLoadStrategy.kt

@@ -1,46 +0,0 @@
-package eu.kanade.tachiyomi.ui.reader
-
-import eu.kanade.tachiyomi.data.database.models.Chapter
-
-/**
- * Load strategy using the source order. This is the default ordering.
- */
-class ChapterLoadBySource {
-    fun get(allChapters: List<Chapter>): List<Chapter> {
-        return allChapters.sortedByDescending { it.source_order }
-    }
-}
-
-/**
- * Load strategy using unique chapter numbers with same scanlator preference.
- */
-class ChapterLoadByNumber {
-    fun get(allChapters: List<Chapter>, selectedChapter: Chapter): List<Chapter> {
-        val chapters = mutableListOf<Chapter>()
-        val chaptersByNumber = allChapters.groupBy { it.chapter_number }
-
-        for ((number, chaptersForNumber) in chaptersByNumber) {
-            val preferredChapter = when {
-                // Make sure the selected chapter is always present
-                number == selectedChapter.chapter_number -> selectedChapter
-                // If there is only one chapter for this number, use it
-                chaptersForNumber.size == 1 -> chaptersForNumber.first()
-                // Prefer a chapter of the same scanlator as the selected
-                else ->
-                    chaptersForNumber.find { it.scanlator == selectedChapter.scanlator }
-                        ?: chaptersForNumber.first()
-            }
-            chapters.add(preferredChapter)
-        }
-        return chapters.sortedBy { it.chapter_number }
-    }
-}
-
-/**
- * Load strategy using the chapter upload date. This ordering ignores scanlators
- */
-class ChapterLoadByUploadDate {
-    fun get(allChapters: List<Chapter>): List<Chapter> {
-        return allChapters.sortedBy { it.date_upload }
-    }
-}

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderPresenter.kt

@@ -23,6 +23,7 @@ import eu.kanade.tachiyomi.ui.reader.model.ReaderPage
 import eu.kanade.tachiyomi.ui.reader.model.ViewerChapters
 import eu.kanade.tachiyomi.ui.reader.setting.OrientationType
 import eu.kanade.tachiyomi.ui.reader.setting.ReadingModeType
+import eu.kanade.tachiyomi.util.chapter.getChapterSort
 import eu.kanade.tachiyomi.util.isLocal
 import eu.kanade.tachiyomi.util.lang.byteSize
 import eu.kanade.tachiyomi.util.lang.launchIO
@@ -123,12 +124,9 @@ class ReaderPresenter(
             else -> dbChapters
         }
 
-        when (manga.sorting) {
-            Manga.CHAPTER_SORTING_SOURCE -> ChapterLoadBySource().get(chaptersForReader)
-            Manga.CHAPTER_SORTING_NUMBER -> ChapterLoadByNumber().get(chaptersForReader, selectedChapter)
-            Manga.CHAPTER_SORTING_UPLOAD_DATE -> ChapterLoadByUploadDate().get(chaptersForReader)
-            else -> error("Unknown sorting method")
-        }.map(::ReaderChapter)
+        chaptersForReader
+            .sortedWith(getChapterSort(manga))
+            .map(::ReaderChapter)
     }
 
     private var hasTrackers: Boolean = false

app/src/main/java/eu/kanade/tachiyomi/util/chapter/ChapterSorter.kt

@@ -0,0 +1,24 @@
+package eu.kanade.tachiyomi.util.chapter
+
+import eu.kanade.tachiyomi.data.database.models.Chapter
+import eu.kanade.tachiyomi.data.database.models.Manga
+
+fun getChapterSort(manga: Manga): (Chapter, Chapter) -> Int {
+    val sortDescending = manga.sortDescending()
+
+    return when (manga.sorting) {
+        Manga.CHAPTER_SORTING_SOURCE -> when (sortDescending) {
+            true -> { c1, c2 -> c1.source_order.compareTo(c2.source_order) }
+            false -> { c1, c2 -> c2.source_order.compareTo(c1.source_order) }
+        }
+        Manga.CHAPTER_SORTING_NUMBER -> when (sortDescending) {
+            true -> { c1, c2 -> c2.chapter_number.compareTo(c1.chapter_number) }
+            false -> { c1, c2 -> c1.chapter_number.compareTo(c2.chapter_number) }
+        }
+        Manga.CHAPTER_SORTING_UPLOAD_DATE -> when (sortDescending) {
+            true -> { c1, c2 -> c2.date_upload.compareTo(c1.date_upload) }
+            false -> { c1, c2 -> c1.date_upload.compareTo(c2.date_upload) }
+        }
+        else -> throw NotImplementedError("Unimplemented sorting method")
+    }
+}

gradle.properties

@@ -11,7 +11,7 @@
 # The setting is particularly useful for tweaking memory settings.
 # Default value: -Xmx10248m -XX:MaxPermSize=256m
 # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8
-org.gradle.jvmargs=-Xmx3072m
+org.gradle.jvmargs=-Xmx4096m
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit