Option to clear updates feed

app/src/main/java/org/koitharu/kotatsu/core/db/TrackLogsDao.kt

@@ -22,4 +22,7 @@ interface TrackLogsDao {
 
 	@Query("DELETE FROM track_logs WHERE manga_id NOT IN (SELECT manga_id FROM tracks)")
 	suspend fun cleanup()
+
+	@Query("SELECT COUNT(*) FROM track_logs")
+	suspend fun count(): Int
 }

app/src/main/java/org/koitharu/kotatsu/domain/tracking/TrackingRepository.kt

@@ -44,6 +44,10 @@ class TrackingRepository : KoinComponent {
 		}
 	}
 
+	suspend fun count() = db.trackLogsDao.count()
+
+	suspend fun clearLogs() = db.trackLogsDao.clear()
+
 	suspend fun cleanup() {
 		db.withTransaction {
 			db.tracksDao.cleanup()

app/src/main/java/org/koitharu/kotatsu/ui/settings/HistorySettingsFragment.kt

@@ -9,6 +9,7 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.local.Cache
+import org.koitharu.kotatsu.domain.tracking.TrackingRepository
 import org.koitharu.kotatsu.ui.common.BasePreferenceFragment
 import org.koitharu.kotatsu.ui.search.MangaSuggestionsProvider
 import org.koitharu.kotatsu.utils.CacheUtils
@@ -17,6 +18,10 @@ import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
 class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cache) {
 
+	private val trackerRepo by lazy {
+		TrackingRepository()
+	}
+
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_history)
 		findPreference<Preference>(R.string.key_pages_cache_clear)?.let { pref ->
@@ -39,6 +44,12 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 			val items = MangaSuggestionsProvider.getItemsCount(p.context)
 			p.summary = p.context.resources.getQuantityString(R.plurals.items, items, items)
 		}
+		findPreference<Preference>(R.string.key_updates_feed_clear)?.let { p ->
+			lifecycleScope.launchWhenResumed {
+				val items = trackerRepo.count()
+				p.summary = p.context.resources.getQuantityString(R.plurals.items, items, items)
+			}
+		}
 	}
 
 	override fun onPreferenceTreeClick(preference: Preference): Boolean {
@@ -62,6 +73,19 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 				).show()
 				true
 			}
+			getString(R.string.key_updates_feed_clear) -> {
+				lifecycleScope.launch {
+					trackerRepo.clearLogs()
+					preference.summary = preference.context.resources
+						.getQuantityString(R.plurals.items, 0, 0)
+					Snackbar.make(
+						view ?: return@launch,
+						R.string.updates_feed_cleared,
+						Snackbar.LENGTH_SHORT
+					).show()
+				}
+				true
+			}
 			else -> super.onPreferenceTreeClick(preference)
 		}
 	}

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

@@ -140,4 +140,6 @@
 	<string name="new_version_s">Новая версия: %s</string>
 	<string name="size_s">Размер: %s</string>
 	<string name="waiting_for_network">Ожидание подключения…</string>
+	<string name="clear_updates_feed">Очистить ленту обновлений</string>
+	<string name="updates_feed_cleared">Лента обновлений очищена</string>
 </resources>

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

@@ -9,6 +9,7 @@
 	<string name="key_pages_cache_clear">pages_cache_clear</string>
 	<string name="key_thumbs_cache_clear">thumbs_cache_clear</string>
 	<string name="key_search_history_clear">search_history_clear</string>
+	<string name="key_updates_feed_clear">updates_feed_clear</string>
 	<string name="key_grid_size">grid_size</string>
 	<string name="key_remote_sources">remote_sources</string>
 	<string name="key_local_storage">local_storage</string>

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

@@ -141,4 +141,6 @@
 	<string name="new_version_s">New version: %s</string>
 	<string name="size_s">Size: %s</string>
 	<string name="waiting_for_network">Waiting for network…</string>
+	<string name="clear_updates_feed">Clear updates feed</string>
+	<string name="updates_feed_cleared">Updates feed cleared</string>
 </resources>

app/src/main/res/xml/pref_history.xml

@@ -9,6 +9,12 @@
 		android:title="@string/clear_search_history"
 		app:iconSpaceReserved="false" />
 
+	<Preference
+		android:key="@string/key_updates_feed_clear"
+		android:persistent="false"
+		android:title="@string/clear_updates_feed"
+		app:iconSpaceReserved="false" />
+
 	<PreferenceCategory
 		app:iconSpaceReserved="false"
 		android:title="@string/cache">