microg: improve installer state detection

app/src/main/java/com/aurora/store/compose/ui/details/AppDetailsScreen.kt

@@ -620,7 +620,7 @@ private fun ScreenContentApp(
         is ExtraScreen.MicroG -> MicroGScreen(
             packageName = app.packageName,
             onNavigateUp = ::onNavigateBack,
-            onIgnore = { onInstall(ignoreMicroG = it) }
+            onProceed = { onInstall(ignoreMicroG = true) }
         )
 
         is Screen.DevProfile -> DevProfileScreen(

app/src/main/java/com/aurora/store/compose/ui/details/MicroGScreen.kt

@@ -56,14 +56,14 @@ import com.aurora.store.viewmodel.onboarding.MicroGViewModel
 fun MicroGScreen(
     packageName: String,
     onNavigateUp: () -> Unit,
-    onIgnore: (Boolean) -> Unit,
+    onProceed: () -> Unit,
     appDetailsViewModel: AppDetailsViewModel = hiltViewModel(key = packageName),
     viewModel: MicroGViewModel = hiltViewModel(),
     windowAdaptiveInfo: WindowAdaptiveInfo = currentWindowAdaptiveInfoV2()
 ) {
     val app by appDetailsViewModel.app.collectAsStateWithLifecycle()
     val topAppBarTitle = when {
-        windowAdaptiveInfo.isWindowCompact -> app!!.displayName
+        windowAdaptiveInfo.isWindowCompact -> app?.displayName
         else -> stringResource(R.string.onboarding_title_gsf)
     }
 
@@ -73,7 +73,7 @@ fun MicroGScreen(
         onNavigateUp = onNavigateUp,
         onInstall = { viewModel.downloadMicroG() },
         onRetry = { viewModel.retryDownload() },
-        onIgnore = onIgnore
+        onProceed = onProceed
     )
 }
 
@@ -84,7 +84,7 @@ private fun ScreenContent(
     onNavigateUp: () -> Unit = {},
     onInstall: () -> Unit = {},
     onRetry: () -> Unit = {},
-    onIgnore: (Boolean) -> Unit = {},
+    onProceed: () -> Unit = {},
     windowAdaptiveInfo: WindowAdaptiveInfo = currentWindowAdaptiveInfoV2()
 ) {
     val context = LocalContext.current
@@ -123,7 +123,7 @@ private fun ScreenContent(
 
                     Button(
                         modifier = Modifier.weight(1F),
-                        onClick = { onIgnore(uiState.isInstalled) },
+                        onClick = onProceed,
                         enabled = !uiState.isInProgress
                     ) {
                         Text(

app/src/main/java/com/aurora/store/viewmodel/onboarding/MicroGViewModel.kt

@@ -113,10 +113,22 @@ class MicroGViewModel @Inject constructor(
     private val bundle = listOf(microGServiceApk, microGCompanionApk)
 
     init {
-        AuroraApp.events.installerEvent.onEach {
-            if (it is InstallerEvent.Installed) refresh()
+        AuroraApp.events.installerEvent.onEach { event ->
+            when (event) {
+                is InstallerEvent.Installed -> refresh()
+                is InstallerEvent.Uninstalled -> handleUninstall(event.packageName)
+                else -> {}
+            }
         }.launchIn(AuroraApp.scope)
 
+        viewModelScope.launch {
+            bundle.forEach { apk ->
+                val download = downloadHelper.getDownload(apk.packageName)
+                if (download?.status == DownloadStatus.COMPLETED && !isBundleApkInstalled(apk)) {
+                    downloadHelper.removeDownload(apk.packageName)
+                }
+            }
+
             combine(
                 downloadHelper.downloadsList,
                 networkProvider.status.onStart { emit(NetworkStatus.AVAILABLE) }
@@ -128,6 +140,7 @@ class MicroGViewModel @Inject constructor(
                 )
             }.onEach { uiState = it }.launchIn(viewModelScope)
         }
+    }
 
     fun downloadMicroG() {
         viewModelScope.launch(Dispatchers.IO) {
@@ -147,18 +160,44 @@ class MicroGViewModel @Inject constructor(
     }
 
     private suspend fun enqueueIfNeeded(apk: ExternalApk) {
-        if (apk.isInstalled(context)) {
+        if (isBundleApkInstalled(apk)) {
             AuroraApp.events.send(InstallerEvent.Installed(apk.packageName))
         } else {
             downloadHelper.enqueueStandalone(apk)
         }
     }
 
+    // Validate against the microG-specific signature/version checks rather than mere package
+    // presence — a stock Play Store or older Companion would otherwise be reported as installed.
+    private fun isBundleApkInstalled(apk: ExternalApk): Boolean = when (apk.packageName) {
+        PACKAGE_NAME_GMS -> PackageUtil.hasSupportedMicroGVariant(context)
+        PACKAGE_NAME_PLAY_STORE -> PackageUtil.hasMicroGCompanion(context)
+        else -> apk.isInstalled(context)
+    }
+
+    private fun handleUninstall(packageName: String) {
+        val apk = bundle.find { it.packageName == packageName } ?: return
+        viewModelScope.launch {
+            downloadHelper.removeDownload(packageName)
+            uiState = uiState.copy(
+                items = uiState.items.map { item ->
+                    if (item.packageName == apk.packageName) {
+                        item.copy(status = InstallStatus.PENDING, progress = 0)
+                    } else {
+                        item
+                    }
+                }
+            )
+        }
+    }
+
     private fun refresh() {
         uiState = uiState.copy(
             items = uiState.items.map { item ->
+                val apk = bundle.find { it.packageName == item.packageName }
                 if (item.status != InstallStatus.INSTALLED &&
-                    PackageUtil.isInstalled(context, item.packageName)
+                    apk != null &&
+                    isBundleApkInstalled(apk)
                 ) {
                     item.copy(status = InstallStatus.INSTALLED)
                 } else {
@@ -170,7 +209,7 @@ class MicroGViewModel @Inject constructor(
 
     private fun buildItem(apk: ExternalApk, download: Download?): ExternalItem {
         val state = when {
-            apk.isInstalled(context) -> InstallStatus.INSTALLED
+            isBundleApkInstalled(apk) -> InstallStatus.INSTALLED
             download == null -> InstallStatus.PENDING
             download.status == DownloadStatus.FAILED -> InstallStatus.FAILED
             download.status == DownloadStatus.CANCELLED -> InstallStatus.PENDING