Add option to invalidate download cache (#8491)

* Add option to invalidate download cache

* Review changes + lint

app/src/main/java/eu/kanade/presentation/more/settings/screen/SettingsAdvancedScreen.kt

@@ -31,6 +31,7 @@ import eu.kanade.presentation.more.settings.Preference
 import eu.kanade.presentation.util.collectAsState
 import eu.kanade.tachiyomi.R
 import eu.kanade.tachiyomi.data.cache.ChapterCache
+import eu.kanade.tachiyomi.data.download.DownloadCache
 import eu.kanade.tachiyomi.data.library.LibraryUpdateService
 import eu.kanade.tachiyomi.data.preference.PreferenceValues
 import eu.kanade.tachiyomi.data.track.TrackManager
@@ -187,6 +188,11 @@ class SettingsAdvancedScreen : SearchableSettings {
                     pref = libraryPreferences.autoClearChapterCache(),
                     title = stringResource(R.string.pref_auto_clear_chapter_cache),
                 ),
+                Preference.PreferenceItem.TextPreference(
+                    title = stringResource(R.string.pref_invalidate_download_cache),
+                    subtitle = stringResource(R.string.pref_invalidate_download_cache_summary),
+                    onClick = { Injekt.get<DownloadCache>().invalidateCache() },
+                ),
                 Preference.PreferenceItem.TextPreference(
                     title = stringResource(R.string.pref_clear_database),
                     subtitle = stringResource(R.string.pref_clear_database_summary),

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

@@ -233,6 +233,10 @@ class DownloadCache(
         return UniFile.fromUri(context, dir.toUri())
     }
 
+    fun invalidateCache() {
+        lastRenew = 0L
+    }
+
     /**
      * Renews the downloads cache.
      */

i18n/src/main/res/values/strings.xml

@@ -505,6 +505,8 @@
     <string name="cache_deleted">Cache cleared. %1$d files have been deleted</string>
     <string name="cache_delete_error">Error occurred while clearing</string>
     <string name="pref_auto_clear_chapter_cache">Clear chapter cache on app close</string>
+    <string name="pref_invalidate_download_cache">Invalidate download cache</string>
+    <string name="pref_invalidate_download_cache_summary">Forces the app to reindex downloads</string>
     <string name="pref_clear_database">Clear database</string>
     <string name="pref_clear_database_summary">Delete history for entries that are not saved in your library</string>
     <string name="clear_database_source_item_count">%1$d non-library entries in database</string>