fix: show available and selected patches in patch selector screen

app/src/main/java/app/revanced/manager/ui/screen/PatchesSelectorScreen.kt

@@ -57,8 +57,8 @@ import app.revanced.manager.R
 import app.revanced.manager.patcher.patch.Option
 import app.revanced.manager.patcher.patch.PatchInfo
 import app.revanced.manager.ui.component.AppTopBar
-import app.revanced.manager.ui.component.SafeguardDialog
 import app.revanced.manager.ui.component.LazyColumnWithScrollbar
+import app.revanced.manager.ui.component.SafeguardDialog
 import app.revanced.manager.ui.component.SearchView
 import app.revanced.manager.ui.component.patches.OptionItem
 import app.revanced.manager.ui.viewmodel.PatchesSelectorViewModel
@@ -93,6 +93,21 @@ fun PatchesSelectorScreen(
         derivedStateOf { vm.selectionIsValid(bundles) }
     }
 
+    val availablePatchCount by remember {
+        derivedStateOf {
+            bundles.sumOf { it.patchCount }
+        }
+    }
+
+    val defaultPatchSelectionCount by vm.defaultSelectionCount
+        .collectAsStateWithLifecycle(initialValue = 0)
+
+    val selectedPatchCount by remember {
+        derivedStateOf {
+            vm.customPatchSelection?.values?.sumOf { it.size } ?: defaultPatchSelectionCount
+        }
+    }
+
     val patchLazyListStates = remember(bundles) { List(bundles.size) { LazyListState() } }
 
     if (showBottomSheet) {
@@ -265,7 +280,7 @@ fun PatchesSelectorScreen(
     Scaffold(
         topBar = {
             AppTopBar(
-                title = stringResource(R.string.select_patches),
+                title = stringResource(R.string.patches_selected, selectedPatchCount, availablePatchCount),
                 onBackClick = onBackClick,
                 actions = {
                     IconButton(onClick = vm::reset) {

app/src/main/java/app/revanced/manager/ui/screen/SelectedAppInfoScreen.kt

@@ -69,11 +69,6 @@ fun SelectedAppInfoScreen(
             patches.values.sumOf { it.size }
         }
     }
-    val availablePatchCount by remember {
-        derivedStateOf {
-            bundles.sumOf { it.patchCount }
-        }
-    }
 
     val navController =
         rememberNavController<SelectedAppInfoDestination>(startDestination = SelectedAppInfoDestination.Main)
@@ -111,7 +106,6 @@ fun SelectedAppInfoScreen(
                     navController.navigate(SelectedAppInfoDestination.VersionSelector)
                 },
                 onBackClick = onBackClick,
-                availablePatchCount = availablePatchCount,
                 selectedPatchCount = selectedPatchCount,
                 packageName = packageName,
                 version = version,
@@ -154,7 +148,6 @@ private fun SelectedAppInfoScreen(
     onPatchSelectorClick: () -> Unit,
     onVersionSelectorClick: () -> Unit,
     onBackClick: () -> Unit,
-    availablePatchCount: Int,
     selectedPatchCount: Int,
     packageName: String,
     version: String,
@@ -182,7 +175,7 @@ private fun SelectedAppInfoScreen(
         ) {
             AppInfo(packageInfo, placeholderLabel = packageName) {
                 Text(
-                    stringResource(R.string.selected_app_meta, version, availablePatchCount),
+                    stringResource(R.string.selected_app_meta, version),
                     color = MaterialTheme.colorScheme.onSurfaceVariant,
                     style = MaterialTheme.typography.bodyMedium,
                 )

app/src/main/java/app/revanced/manager/ui/viewmodel/PatchesSelectorViewModel.kt

@@ -36,6 +36,7 @@ import kotlinx.coroutines.launch
 import org.koin.core.component.KoinComponent
 import org.koin.core.component.get
 import kotlinx.collections.immutable.*
+import kotlinx.coroutines.flow.map
 
 @Stable
 @OptIn(SavedStateHandleSaveableApi::class)
@@ -77,7 +78,7 @@ class PatchesSelectorViewModel(input: Params) : ViewModel(), KoinComponent {
     }
 
     private var hasModifiedSelection = false
-    private var customPatchSelection: PersistentPatchSelection? by savedStateHandle.saveable(
+    var customPatchSelection: PersistentPatchSelection? by savedStateHandle.saveable(
         key = "selection",
         stateSaver = selectionSaver,
     ) {
@@ -103,12 +104,13 @@ class PatchesSelectorViewModel(input: Params) : ViewModel(), KoinComponent {
     var filter by mutableIntStateOf(SHOW_SUPPORTED or SHOW_UNIVERSAL or SHOW_UNSUPPORTED)
         private set
 
-    private suspend fun generateDefaultSelection(): PersistentPatchSelection {
+    private val defaultPatchSelection = bundlesFlow.map { bundles ->
-        val bundles = bundlesFlow.first()
-        val generatedSelection =
         bundles.toPatchSelection(allowIncompatiblePatches) { _, patch -> patch.include }
+            .toPersistentPatchSelection()
+    }
 
-        return generatedSelection.toPersistentPatchSelection()
+    val defaultSelectionCount = defaultPatchSelection.map { selection ->
+        selection.values.sumOf { it.size }
     }
 
     fun selectionIsValid(bundles: List<BundleInfo>) = bundles.any { bundle ->
@@ -124,7 +126,7 @@ class PatchesSelectorViewModel(input: Params) : ViewModel(), KoinComponent {
     fun togglePatch(bundle: Int, patch: PatchInfo) = viewModelScope.launch {
         hasModifiedSelection = true
 
-        val selection = customPatchSelection ?: generateDefaultSelection()
+        val selection = customPatchSelection ?: defaultPatchSelection.first()
         val newPatches = selection[bundle]?.let { patches ->
             if (patch.name in patches)
                 patches.remove(patch.name)

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

@@ -9,7 +9,7 @@
     <string name="dashboard">Dashboard</string>
     <string name="settings">Settings</string>
     <string name="select_app">Select an app</string>
-    <string name="select_patches">Select patches</string>
+    <string name="patches_selected">%1$d/%2$d selected</string>
 
     <string name="unsupported_architecture_warning">Patching on this device architecture is unsupported and will most likely fail.</string>
 
@@ -30,7 +30,7 @@
     <string name="bundle_name_default">Default</string>
     <string name="bundle_name_fallback">Unnamed</string>
 
-    <string name="selected_app_meta">%1$s • %2$d available patches</string>
+    <string name="selected_app_meta">%1$s</string>
 
     <string name="patch_item_description">Start patching the application</string>
     <string name="patch_selector_item">Patch selection and options</string>