Make library update error notification optional (closes #3200)

(cherry picked from commit 647391ef73)

app/src/main/java/eu/kanade/tachiyomi/data/library/LibraryUpdateService.kt

@@ -313,7 +313,7 @@ class LibraryUpdateService(
                     }
                 }
 
-                if (failedUpdates.isNotEmpty()) {
+                if (preferences.showLibraryUpdateErrors() && failedUpdates.isNotEmpty()) {
                     val errorFile = writeErrorFile(failedUpdates)
                     notifier.showUpdateErrorNotification(
                         failedUpdates.map { it.first.title },

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

@@ -129,6 +129,8 @@ object PreferenceKeys {
 
     const val hideNotificationContent = "hide_notification_content"
 
+    const val showLibraryUpdateErrors = "show_library_update_errors"
+
     const val downloadNew = "download_new"
 
     const val downloadNewCategories = "download_new_categories"

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

@@ -67,6 +67,8 @@ class PreferencesHelper(val context: Context) {
 
     fun hideNotificationContent() = prefs.getBoolean(Keys.hideNotificationContent, false)
 
+    fun showLibraryUpdateErrors() = prefs.getBoolean(Keys.showLibraryUpdateErrors, false)
+
     fun clear() = prefs.edit().clear().apply()
 
     fun themeMode() = flowPrefs.getString(Keys.themeMode, Values.THEME_MODE_SYSTEM)

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

@@ -164,6 +164,11 @@ class SettingsLibraryController : SettingsController() {
                     true
                 }
             }
+            switchPreference {
+                key = Keys.showLibraryUpdateErrors
+                titleRes = R.string.pref_library_update_error_notification
+                defaultValue = false
+            }
         }
 
         preferenceCategory {