Allow deleting bookmarked chapters option

Some minor tweaks to this:
* tapping delete download on manga details/recents WILL delete the chapter, regardless of bookmark status
* Tapping Remove all downloads in manga details will remove all downloads still, since there's an option to remove all but bookmarks anyway (library like upstream still deletes all)

closes #1470

Co-Authored-By: arkon <4098258+arkon@users.noreply.github.com>

app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadManager.kt

@@ -8,6 +8,7 @@ import eu.kanade.tachiyomi.data.database.models.Chapter
 import eu.kanade.tachiyomi.data.database.models.Manga
 import eu.kanade.tachiyomi.data.download.model.Download
 import eu.kanade.tachiyomi.data.download.model.DownloadQueue
+import eu.kanade.tachiyomi.data.preference.PreferencesHelper
 import eu.kanade.tachiyomi.source.Source
 import eu.kanade.tachiyomi.source.SourceManager
 import eu.kanade.tachiyomi.source.model.Page
@@ -31,6 +32,8 @@ class DownloadManager(val context: Context) {
      */
     private val sourceManager by injectLazy<SourceManager>()
 
+    private val preferences by injectLazy<PreferencesHelper>()
+
     /**
      * Downloads provider, used to retrieve the folders where the chapters are or should be stored.
      */
@@ -249,16 +252,17 @@ class DownloadManager(val context: Context) {
      * @param manga the manga of the chapters.
      * @param source the source of the chapters.
      */
-    fun deleteChapters(chapters: List<Chapter>, manga: Manga, source: Source) {
+    fun deleteChapters(chapters: List<Chapter>, manga: Manga, source: Source, force: Boolean = false) {
+        val filteredChapters = if (force) chapters else getChaptersToDelete(chapters, manga)
         GlobalScope.launch(Dispatchers.IO) {
             val wasPaused = isPaused()
-            if (chapters.isEmpty()) {
+            if (filteredChapters.isEmpty()) {
                 DownloadService.stop(context)
                 downloader.queue.clear()
                 return@launch
             }
             downloader.pause()
-            downloader.queue.remove(chapters)
+            downloader.queue.remove(filteredChapters)
             if (!wasPaused && downloader.queue.isNotEmpty()) {
                 downloader.start()
                 DownloadService.callListeners(true)
@@ -268,15 +272,15 @@ class DownloadManager(val context: Context) {
                 DownloadService.callListeners(false)
                 downloader.stop()
             }
-            queue.remove(chapters)
+            queue.remove(filteredChapters)
             val chapterDirs =
-                provider.findChapterDirs(chapters, manga, source) + provider.findTempChapterDirs(
-                    chapters,
+                provider.findChapterDirs(filteredChapters, manga, source) + provider.findTempChapterDirs(
+                    filteredChapters,
                     manga,
                     source,
                 )
             chapterDirs.forEach { it.delete() }
-            cache.removeChapters(chapters, manga)
+            cache.removeChapters(filteredChapters, manga)
             if (cache.getDownloadCount(manga, true) == 0) { // Delete manga directory if empty
                 chapterDirs.firstOrNull()?.parentFile?.delete()
             }
@@ -356,7 +360,7 @@ class DownloadManager(val context: Context) {
      * @param manga the manga of the chapters.
      */
     fun enqueueDeleteChapters(chapters: List<Chapter>, manga: Manga) {
-        pendingDeleter.addChapters(chapters, manga)
+        pendingDeleter.addChapters(getChaptersToDelete(chapters, manga), manga)
     }
 
     /**
@@ -398,4 +402,13 @@ class DownloadManager(val context: Context) {
 
     fun addListener(listener: DownloadQueue.DownloadListener) = queue.addListener(listener)
     fun removeListener(listener: DownloadQueue.DownloadListener) = queue.removeListener(listener)
+
+    private fun getChaptersToDelete(chapters: List<Chapter>, manga: Manga): List<Chapter> {
+        // Retrieve the categories that are set to exclude from being deleted on read
+        return if (!preferences.removeBookmarkedChapters().get()) {
+            chapters.filterNot { it.bookmark }
+        } else {
+            chapters
+        }
+    }
 }

app/src/main/java/eu/kanade/tachiyomi/data/preference/PreferencesHelper.kt

@@ -393,6 +393,8 @@ class PreferencesHelper(val context: Context) {
 
     fun deleteRemovedChapters() = flowPrefs.getInt(Keys.deleteRemovedChapters, 0)
 
+    fun removeBookmarkedChapters() = flowPrefs.getBoolean("pref_remove_bookmarked", false)
+
     fun showAllCategories() = flowPrefs.getBoolean("show_all_categories", true)
 
     fun showAllCategoriesWhenSearchingSingleCategory() = flowPrefs.getBoolean("show_all_categories_when_searching_single_category", false)

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

@@ -280,8 +280,9 @@ class MangaDetailsPresenter(
      * @param chapter the chapter to delete.
      */
     fun deleteChapter(chapter: ChapterItem) {
-        downloadManager.deleteChapters(listOf(chapter), manga, source)
+        downloadManager.deleteChapters(listOf(chapter), manga, source, true)
         this.chapters.find { it.id == chapter.id }?.apply {
+            if (chapter.chapter.bookmark && !preferences.removeBookmarkedChapters().get()) return@apply
             status = Download.State.QUEUE
             download = null
         }
@@ -303,6 +304,7 @@ class MangaDetailsPresenter(
         }
         chapters.forEach { chapter ->
             this.chapters.find { it.id == chapter.id }?.apply {
+                if (chapter.chapter.bookmark && !preferences.removeBookmarkedChapters().get() && !isEverything) return@apply
                 status = Download.State.QUEUE
                 download = null
             }

app/src/main/java/eu/kanade/tachiyomi/ui/recents/RecentsPresenter.kt

@@ -425,11 +425,12 @@ class RecentsPresenter(
     fun deleteChapter(chapter: Chapter, manga: Manga, update: Boolean = true) {
         val source = Injekt.get<SourceManager>().getOrStub(manga.source)
         launchIO {
-            downloadManager.deleteChapters(listOf(chapter), manga, source)
+            downloadManager.deleteChapters(listOf(chapter), manga, source, true)
         }
         if (update) {
             val item = recentItems.find { it.chapter.id == chapter.id } ?: return
             item.apply {
+                if (chapter.bookmark && !preferences.removeBookmarkedChapters().get()) return@apply
                 status = Download.State.NOT_DOWNLOADED
                 download = null
             }

app/src/main/java/eu/kanade/tachiyomi/ui/setting/SettingsDownloadController.kt

@@ -79,6 +79,10 @@ class SettingsDownloadController : SettingsController() {
                 entryRange = -1..4
                 defaultValue = -1
             }
+            switchPreference {
+                bindTo(preferences.removeBookmarkedChapters())
+                titleRes = R.string.allow_deleting_bookmarked_chapters
+            }
         }
 
         val dbCategories = db.getCategories().executeAsBlocking()

app/src/main/res/values/strings.xml

@@ -955,6 +955,7 @@
     <string name="download_location">Download location</string>
     <string name="only_download_over_wifi">Only download over Wi-Fi</string>
     <string name="remove_when_marked_as_read">Remove when marked as read</string>
+    <string name="allow_deleting_bookmarked_chapters">Allow deleting bookmarked chapters</string>
     <string name="remove_after_read">Remove after read</string>
     <string name="custom_location">Custom location</string>
     <string name="last_read_chapter">Last read chapter</string>