Move new sources tip to catalog

app/src/main/kotlin/org/koitharu/kotatsu/settings/sources/catalog/SourcesCatalogActivity.kt

@@ -10,8 +10,10 @@ import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import coil.ImageLoader
 import com.google.android.material.appbar.AppBarLayout
+import com.google.android.material.snackbar.Snackbar
 import com.google.android.material.tabs.TabLayoutMediator
 import dagger.hilt.android.AndroidEntryPoint
+import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.ui.BaseActivity
 import org.koitharu.kotatsu.core.ui.list.OnListItemClickListener
 import org.koitharu.kotatsu.core.ui.util.ReversibleActionObserver
@@ -21,6 +23,7 @@ import org.koitharu.kotatsu.core.util.ext.observeEvent
 import org.koitharu.kotatsu.core.util.ext.toLocale
 import org.koitharu.kotatsu.databinding.ActivitySourcesCatalogBinding
 import org.koitharu.kotatsu.main.ui.owners.AppBarOwner
+import org.koitharu.kotatsu.settings.newsources.NewSourcesDialogFragment
 import javax.inject.Inject
 
 @AndroidEntryPoint
@@ -31,6 +34,8 @@ class SourcesCatalogActivity : BaseActivity<ActivitySourcesCatalogBinding>(),
 	@Inject
 	lateinit var coil: ImageLoader
 
+	private var newSourcesSnackbar: Snackbar? = null
+
 	override val appBar: AppBarLayout
 		get() = viewBinding.appbar
 
@@ -45,6 +50,7 @@ class SourcesCatalogActivity : BaseActivity<ActivitySourcesCatalogBinding>(),
 		val tabMediator = TabLayoutMediator(viewBinding.tabs, viewBinding.pager, pagerAdapter)
 		tabMediator.attach()
 		viewModel.content.observe(this, pagerAdapter)
+		viewModel.hasNewSources.observe(this, ::onHasNewSourcesChanged)
 		viewModel.onActionDone.observeEvent(
 			this,
 			ReversibleActionObserver(viewBinding.pager),
@@ -80,4 +86,31 @@ class SourcesCatalogActivity : BaseActivity<ActivitySourcesCatalogBinding>(),
 		viewModel.performSearch(null)
 		return true
 	}
+
+	private fun onHasNewSourcesChanged(hasNewSources: Boolean) {
+		if (hasNewSources) {
+			if (newSourcesSnackbar?.isShownOrQueued == true) {
+				return
+			}
+			val snackbar = Snackbar.make(viewBinding.pager, R.string.new_sources_text, Snackbar.LENGTH_INDEFINITE)
+			snackbar.setAction(R.string.explore) {
+				NewSourcesDialogFragment.show(supportFragmentManager)
+			}
+			snackbar.addCallback(
+				object : Snackbar.Callback() {
+					override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
+						super.onDismissed(transientBottomBar, event)
+						if (event == DISMISS_EVENT_SWIPE) {
+							viewModel.skipNewSources()
+						}
+					}
+				},
+			)
+			snackbar.show()
+			newSourcesSnackbar = snackbar
+		} else {
+			newSourcesSnackbar?.dismiss()
+			newSourcesSnackbar = null
+		}
+	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/settings/sources/catalog/SourcesCatalogViewModel.kt

@@ -41,6 +41,10 @@ class SourcesCatalogViewModel @Inject constructor(
 	val locales = repository.allMangaSources.mapToSet { it.locale }
 	val locale = MutableStateFlow(Locale.getDefault().language.takeIf { it in locales })
 
+	val hasNewSources = repository.observeNewSources()
+		.map { it.isNotEmpty() }
+		.stateIn(viewModelScope + Dispatchers.Default, SharingStarted.Lazily, false)
+
 	private val listProducers = locale.map { lc ->
 		createListProducers(lc)
 	}.stateIn(viewModelScope, SharingStarted.Eagerly, createListProducers(locale.value))
@@ -71,6 +75,12 @@ class SourcesCatalogViewModel @Inject constructor(
 		}
 	}
 
+	fun skipNewSources() {
+		launchJob {
+			repository.assimilateNewSources()
+		}
+	}
+
 	@MainThread
 	private fun createListProducers(lc: String?): Map<ContentType, SourcesCatalogListProducer> {
 		val types = EnumSet.allOf(ContentType::class.java)