Option to swap first two navigation items

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

@@ -51,6 +51,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isAmoledTheme: Boolean
 		get() = prefs.getBoolean(KEY_THEME_AMOLED, false)
 
+	val isFavoritesNavItemFirst: Boolean
+		get() = (prefs.getString(KEY_FIRST_NAV_ITEM, null)?.toIntOrNull() ?: 0) == 1
+
 	var gridSize: Int
 		get() = prefs.getInt(KEY_GRID_SIZE, 100)
 		set(value) = prefs.edit { putInt(KEY_GRID_SIZE, value) }
@@ -452,6 +455,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_LOCAL_MANGA_DIRS = "local_manga_dirs"
 		const val KEY_DISABLE_NSFW = "no_nsfw"
 		const val KEY_RELATED_MANGA = "related_manga"
+		const val KEY_FIRST_NAV_ITEM = "nav_first"
 
 		// About
 		const val KEY_APP_UPDATE = "app_update"

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/util/ActivityRecreationHandle.kt

@@ -25,4 +25,9 @@ class ActivityRecreationHandle @Inject constructor() : DefaultActivityLifecycleC
 		val snapshot = activities.keys.toList()
 		snapshot.forEach { ActivityCompat.recreate(it) }
 	}
+
+	fun recreate(cls: Class<out Activity>) {
+		val activity = activities.keys.find { x -> x.javaClass == cls } ?: return
+		ActivityCompat.recreate(activity)
+	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/core/util/ext/Android.kt

@@ -102,7 +102,7 @@ fun <T> SharedPreferences.observe(key: String, valueProducer: suspend () -> T):
 	}
 }.distinctUntilChanged()
 
-fun Lifecycle.postDelayed(runnable: Runnable, delay: Long) {
+fun Lifecycle.postDelayed(delay: Long, runnable: Runnable) {
 	coroutineScope.launch {
 		delay(delay)
 		runnable.run()

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/MainActivity.kt

@@ -116,9 +116,10 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), AppBarOwner, BottomNav
 		navigationDelegate = MainNavigationDelegate(
 			navBar = checkNotNull(bottomNav ?: viewBinding.navRail),
 			fragmentManager = supportFragmentManager,
+			settings = settings,
 		)
 		navigationDelegate.addOnFragmentChangedListener(this)
-		navigationDelegate.onCreate()
+		navigationDelegate.onCreate(savedInstanceState)
 
 		appUpdateBadge = OptionsMenuBadgeHelper(viewBinding.toolbar, R.id.action_app_update)
 

app/src/main/kotlin/org/koitharu/kotatsu/main/ui/MainNavigationDelegate.kt

@@ -1,14 +1,17 @@
 package org.koitharu.kotatsu.main.ui
 
+import android.os.Bundle
 import android.view.MenuItem
 import androidx.activity.OnBackPressedCallback
 import androidx.annotation.IdRes
+import androidx.core.view.isEmpty
 import androidx.core.view.iterator
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
 import com.google.android.material.navigation.NavigationBarView
 import com.google.android.material.transition.MaterialFadeThrough
 import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.core.ui.util.RecyclerViewOwner
 import org.koitharu.kotatsu.core.util.ext.firstVisibleItemPosition
 import org.koitharu.kotatsu.core.util.ext.isAnimationsEnabled
@@ -23,7 +26,10 @@ private const val TAG_PRIMARY = "primary"
 class MainNavigationDelegate(
 	private val navBar: NavigationBarView,
 	private val fragmentManager: FragmentManager,
-) : OnBackPressedCallback(false), NavigationBarView.OnItemSelectedListener, NavigationBarView.OnItemReselectedListener {
+	private val settings: AppSettings,
+) : OnBackPressedCallback(false),
+	NavigationBarView.OnItemSelectedListener,
+	NavigationBarView.OnItemReselectedListener {
 
 	private val listeners = LinkedList<OnFragmentChangedListener>()
 
@@ -56,14 +62,26 @@ class MainNavigationDelegate(
 		navBar.selectedItemId = R.id.nav_history
 	}
 
-	fun onCreate() {
-		primaryFragment?.let {
-			onFragmentChanged(it, fromUser = false)
-			val itemId = getItemId(it)
+	fun onCreate(savedInstanceState: Bundle?) {
+		if (navBar.menu.isEmpty()) {
+			val menuRes = if (settings.isFavoritesNavItemFirst) R.menu.nav_bottom_alt else R.menu.nav_bottom
+			navBar.inflateMenu(menuRes)
+		}
+		val fragment = primaryFragment
+		if (fragment != null) {
+			onFragmentChanged(fragment, fromUser = false)
+			val itemId = getItemId(fragment)
 			if (navBar.selectedItemId != itemId) {
 				navBar.selectedItemId = itemId
 			}
-		} ?: onNavigationItemSelected(navBar.selectedItemId)
+		} else {
+			val itemId = if (savedInstanceState == null) {
+				firstItem()?.itemId ?: navBar.selectedItemId
+			} else {
+				navBar.selectedItemId
+			}
+			onNavigationItemSelected(itemId)
+		}
 	}
 
 	fun setCounterAt(position: Int, counter: Int) {

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt

@@ -163,7 +163,7 @@ class ReaderActivity :
 			readerManager.replace(mode)
 		}
 		if (viewBinding.appbarTop.isVisible) {
-			lifecycle.postDelayed(hideUiRunnable, TimeUnit.SECONDS.toMillis(1))
+			lifecycle.postDelayed(TimeUnit.SECONDS.toMillis(1), hideUiRunnable)
 		}
 		viewBinding.slider.isRtl = mode == ReaderMode.REVERSED
 	}

app/src/main/kotlin/org/koitharu/kotatsu/settings/AppearanceSettingsFragment.kt

@@ -10,7 +10,6 @@ import android.provider.Settings
 import android.view.View
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.app.LocaleManagerCompat
-import androidx.core.view.postDelayed
 import androidx.preference.ListPreference
 import androidx.preference.Preference
 import dagger.hilt.android.AndroidEntryPoint
@@ -21,8 +20,10 @@ import org.koitharu.kotatsu.core.ui.BasePreferenceFragment
 import org.koitharu.kotatsu.core.ui.util.ActivityRecreationHandle
 import org.koitharu.kotatsu.core.util.ext.getLocalesConfig
 import org.koitharu.kotatsu.core.util.ext.map
+import org.koitharu.kotatsu.core.util.ext.postDelayed
 import org.koitharu.kotatsu.core.util.ext.setDefaultValueCompat
 import org.koitharu.kotatsu.core.util.ext.toList
+import org.koitharu.kotatsu.main.ui.MainActivity
 import org.koitharu.kotatsu.parsers.util.names
 import org.koitharu.kotatsu.parsers.util.toTitleCase
 import org.koitharu.kotatsu.settings.utils.ActivityListPreference
@@ -92,11 +93,15 @@ class AppearanceSettingsFragment :
 			AppSettings.KEY_APP_LOCALE -> {
 				AppCompatDelegate.setApplicationLocales(settings.appLocales)
 			}
+
+			AppSettings.KEY_FIRST_NAV_ITEM -> {
+				activityRecreationHandle.recreate(MainActivity::class.java)
+			}
 		}
 	}
 
 	private fun postRestart() {
-		view?.postDelayed(400) {
+		viewLifecycleOwner.lifecycle.postDelayed(400) {
 			activityRecreationHandle.recreateAll()
 		}
 	}