Tracker frequency preference

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -142,6 +142,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isTrackerWifiOnly: Boolean
 		get() = prefs.getBoolean(KEY_TRACKER_WIFI_ONLY, false)
 
+	val trackerFrequencyFactor: Float
+		get() = prefs.getString(KEY_TRACKER_FREQUENCY, null)?.toFloatOrNull() ?: 1f
+
 	val isTrackerNotificationsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_TRACKER_NOTIFICATIONS, true)
 
@@ -562,6 +565,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_READER_VOLUME_BUTTONS = "reader_volume_buttons"
 		const val KEY_TRACKER_ENABLED = "tracker_enabled"
 		const val KEY_TRACKER_WIFI_ONLY = "tracker_wifi"
+		const val KEY_TRACKER_FREQUENCY = "tracker_freq"
 		const val KEY_TRACK_SOURCES = "track_sources"
 		const val KEY_TRACK_CATEGORIES = "track_categories"
 		const val KEY_TRACK_WARNING = "track_warning"

app/src/main/kotlin/org/koitharu/kotatsu/settings/work/WorkScheduleManager.kt

@@ -22,6 +22,7 @@ class WorkScheduleManager @Inject constructor(
 	override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
 		when (key) {
 			AppSettings.KEY_TRACKER_ENABLED,
+			AppSettings.KEY_TRACKER_FREQUENCY,
 			AppSettings.KEY_TRACKER_WIFI_ONLY -> updateWorker(
 				scheduler = trackerScheduler,
 				isEnabled = settings.isTrackerEnabled,

app/src/main/kotlin/org/koitharu/kotatsu/tracker/work/TrackWorker.kt

@@ -67,6 +67,7 @@ import org.koitharu.kotatsu.tracker.domain.model.MangaUpdates
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 import javax.inject.Provider
+import kotlin.math.roundToInt
 import com.google.android.material.R as materialR
 
 @HiltWorker
@@ -284,9 +285,6 @@ class TrackWorker @AssistedInject constructor(
 			applicationContext.getString(android.R.string.cancel),
 			workManager.createCancelPendingIntent(id),
 		)
-		if (max > 0) {
-			setSubText(applicationContext.getString(R.string.fraction_pattern, progress, max))
-		}
 		setProgress(max, progress, max == 0)
 		setSmallIcon(android.R.drawable.stat_notify_sync)
 		setForegroundServiceBehavior(
@@ -316,7 +314,8 @@ class TrackWorker @AssistedInject constructor(
 			val constraints = createConstraints()
 			val runCount = dbProvider.get().getTracksDao().getTracksCount()
 			val runsPerFullCheck = (runCount / BATCH_SIZE.toFloat()).toIntUp().coerceAtLeast(1)
-			val interval = (6 / runsPerFullCheck).coerceAtLeast(2)
+			val frequency = settings.trackerFrequencyFactor
+			val interval = (18 / runsPerFullCheck / frequency).roundToInt().coerceAtLeast(2)
 			val request = PeriodicWorkRequestBuilder<TrackWorker>(interval.toLong(), TimeUnit.HOURS)
 				.setConstraints(constraints)
 				.addTag(TAG)

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

@@ -85,4 +85,9 @@
 		<item>@string/single_cbz_file</item>
 		<item>@string/multiple_cbz_files</item>
 	</string-array>
+	<string-array name="tracker_frequency" translatable="false">
+		<item>@string/less_frequently</item>
+		<item>@string/system_default</item>
+		<item>@string/more_frequently</item>
+	</string-array>
 </resources>

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

@@ -62,4 +62,9 @@
 		<item>1</item>
 		<item>2</item>
 	</string-array>
+	<string-array name="values_tracker_frequency" translatable="false">
+		<item>0.4</item>
+		<item>1</item>
+		<item>2</item>
+	</string-array>
 </resources>

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

@@ -630,4 +630,7 @@
 	<string name="show_updated">Show updated</string>
 	<string name="webtoon_gaps">Gaps in webtoon mode</string>
 	<string name="webtoon_gaps_summary">Show vertical gaps between pages in webtoon mode</string>
+	<string name="less_frequently">Less frequently</string>
+	<string name="more_frequently">More frequently</string>
+	<string name="frequency_of_check">Frequency of check</string>
 </resources>

app/src/main/res/xml/pref_tracker.xml

@@ -16,13 +16,23 @@
 		android:summary="@string/tracker_wifi_only_summary"
 		android:title="@string/only_using_wifi" />
 
+	<ListPreference
+		android:defaultValue="1"
+		android:dependency="tracker_enabled"
+		android:entries="@array/tracker_frequency"
+		android:entryValues="@array/values_tracker_frequency"
+		android:key="tracker_freq"
+		android:title="@string/frequency_of_check"
+		app:useSimpleSummaryProvider="true" />
+
 	<MultiSelectListPreference
 		android:defaultValue="@array/values_track_sources_default"
 		android:dependency="tracker_enabled"
 		android:entries="@array/track_sources"
 		android:entryValues="@array/values_track_sources"
 		android:key="track_sources"
-		android:title="@string/track_sources" />
+		android:title="@string/track_sources"
+		app:allowDividerAbove="true" />
 
 	<Preference
 		android:key="track_categories"