fix: crash on GrapheneOS when downloading certificate (WPB-7407)

app/src/main/kotlin/com/wire/android/ui/home/messagecomposer/recordaudio/AudioMediaRecorder.kt

@@ -21,7 +21,7 @@ import android.content.Context
 import android.media.MediaRecorder
 import android.os.Build
 import com.wire.android.appLogger
-import com.wire.android.util.audioFileDateTime
+import com.wire.android.util.fileDateTime
 import com.wire.android.util.dispatchers.DispatcherProvider
 import com.wire.kalium.logic.data.asset.KaliumFileSystem
 import com.wire.kalium.util.DateTimeUtil
@@ -118,7 +118,7 @@ class AudioMediaRecorder @Inject constructor(
 
     private companion object {
         fun getRecordingAudioFileName(): String =
-            "wire-audio-${DateTimeUtil.currentInstant().audioFileDateTime()}.m4a"
+            "wire-audio-${DateTimeUtil.currentInstant().fileDateTime()}.m4a"
         const val SIZE_OF_1MB = 1024 * 1024
         const val AUDIO_CHANNELS = 1
         const val SAMPLING_RATE = 44100

app/src/main/kotlin/com/wire/android/ui/settings/devices/e2ei/E2eiCertificateDetailsScreen.kt

@@ -28,7 +28,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalClipboardManager
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.TextStyle
 import androidx.compose.ui.text.style.TextAlign
@@ -49,11 +48,9 @@ import com.wire.android.ui.common.topappbar.NavigationIconType
 import com.wire.android.ui.common.topappbar.WireCenterAlignedTopAppBar
 import com.wire.android.util.copyLinkToClipboard
 import com.wire.android.util.createPemFile
-import com.wire.android.util.saveFileToDownloadsFolder
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import okio.Path.Companion.toOkioPath
 
 @RootNavGraph
 @Destination(
@@ -67,7 +64,7 @@ fun E2eiCertificateDetailsScreen(
 ) {
     val snackbarHostState = LocalSnackbarHostState.current
     val scope = rememberCoroutineScope()
-    val context = LocalContext.current
+    val downloadedString = stringResource(id = R.string.media_gallery_on_image_downloaded)
 
     WireScaffold(
         topBar = {
@@ -92,7 +89,6 @@ fun E2eiCertificateDetailsScreen(
         with(e2eiCertificateDetailsViewModel) {
             val copiedToClipboardString =
                 stringResource(id = R.string.e2ei_certificate_details_certificate_copied_to_clipboard)
-            val downloadedString = stringResource(id = R.string.media_gallery_on_image_downloaded)
 
             E2eiCertificateDetailsContent(
                 padding = it,
@@ -110,14 +106,10 @@ fun E2eiCertificateDetailsScreen(
                 onDownload = {
                     scope.launch {
                         withContext(Dispatchers.IO) {
-                            createPemFile(CERTIFICATE_FILE_NAME, getCertificate()).also {
-                                saveFileToDownloadsFolder(
-                                    context = context,
-                                    assetName = CERTIFICATE_FILE_NAME,
-                                    assetDataPath = it.toPath().toOkioPath(),
-                                    assetDataSize = it.length()
-                                )
-                            }
+                            createPemFile(
+                                pathname = getCertificateName(),
+                                content = getCertificate()
+                            )
                         }
                         state.wireModalSheetState.hide()
                         snackbarHostState.showSnackbar(downloadedString)
@@ -153,5 +145,3 @@ fun E2eiCertificateDetailsContent(
         style = textStyle
     )
 }
-
-const val CERTIFICATE_FILE_NAME = "certificate.txt"

app/src/main/kotlin/com/wire/android/ui/settings/devices/e2ei/E2eiCertificateDetailsViewModel.kt

@@ -22,14 +22,21 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.setValue
 import androidx.lifecycle.SavedStateHandle
 import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
 import com.wire.android.ui.common.bottomsheet.WireModalSheetState
 import com.wire.android.ui.navArgs
+import com.wire.android.util.fileDateTime
+import com.wire.kalium.logic.feature.user.GetSelfUserUseCase
+import com.wire.kalium.util.DateTimeUtil
 import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
 import javax.inject.Inject
 
 @HiltViewModel
 class E2eiCertificateDetailsViewModel @Inject constructor(
     savedStateHandle: SavedStateHandle,
+    private val observerSelfUser: GetSelfUserUseCase,
 ) : ViewModel() {
 
     var state: E2eiCertificateDetailsState by mutableStateOf(E2eiCertificateDetailsState())
@@ -38,7 +45,24 @@ class E2eiCertificateDetailsViewModel @Inject constructor(
     private val e2eiCertificateDetailsScreenNavArgs: E2eiCertificateDetailsScreenNavArgs =
         savedStateHandle.navArgs()
 
+    private var selfUserHandle: String? = null
+
+    init {
+        getSelfUserId()
+    }
+
+    private fun getSelfUserId() {
+        viewModelScope.launch {
+            selfUserHandle = observerSelfUser().first().handle
+        }
+    }
+
     fun getCertificate() = e2eiCertificateDetailsScreenNavArgs.certificateString
+
+    fun getCertificateName(): String {
+        val date = DateTimeUtil.currentInstant().fileDateTime()
+        return "wire-certificate-$selfUserHandle-$date.txt"
+    }
 }
 
 data class E2eiCertificateDetailsState(

app/src/main/kotlin/com/wire/android/util/DateTimeUtil.kt

@@ -50,7 +50,7 @@ private val readReceiptDateTimeFormat = SimpleDateFormat(
     Locale.getDefault()
 ).apply { timeZone = TimeZone.getDefault() }
 
-private val audioFileDateTimeFormat = SimpleDateFormat(
+private val fileDateTimeFormat = SimpleDateFormat(
     "yyyy-MM-dd-hh-mm-ss",
     Locale.getDefault()
 ).apply { timeZone = TimeZone.getDefault() }
@@ -96,7 +96,7 @@ fun Date.toMediumOnlyDateTime(): String = mediumOnlyDateTimeFormat.format(this)
 
 fun Instant.uiReadReceiptDateTime(): String = readReceiptDateTimeFormat.format(Date(this.toEpochMilliseconds()))
 
-fun Instant.audioFileDateTime(): String = audioFileDateTimeFormat
+fun Instant.fileDateTime(): String = fileDateTimeFormat
     .format(Date(this.toEpochMilliseconds()))
 
 fun getCurrentParsedDateTime(): String = mediumDateTimeFormat.format(System.currentTimeMillis())