android, desktop: fix importing the same database after exporting it (#5372)

* android, desktop: fix importing the same database after exporting it

* delete archive after export or cancel

---------

Co-authored-by: Evgeny Poberezkin <evgeny@poberezkin.com>

apps/multiplatform/common/src/commonMain/kotlin/chat/simplex/common/views/database/DatabaseView.kt

@@ -30,6 +30,7 @@ import kotlinx.datetime.*
 import java.io.*
 import java.net.URI
 import java.nio.file.Files
+import java.nio.file.StandardCopyOption
 import java.text.SimpleDateFormat
 import java.util.*
 import kotlin.collections.ArrayList
@@ -44,11 +45,14 @@ fun DatabaseView() {
   val chatArchiveFile = remember { mutableStateOf<String?>(null) }
   val stopped = remember { m.chatRunning }.value == false
   val saveArchiveLauncher = rememberFileChooserLauncher(false) { to: URI? ->
-    val file = chatArchiveFile.value
-    if (file != null && to != null) {
-      copyFileToFile(File(file), to) {
-        chatArchiveFile.value = null
-      }
+    val archive = chatArchiveFile.value
+    if (archive != null && to != null) {
+      copyFileToFile(File(archive), to) {}
+    }
+    // delete no matter the database was exported or canceled the export process
+    if (archive != null) {
+      File(archive).delete()
+      chatArchiveFile.value = null
     }
   }
   val appFilesCountAndSize = remember { mutableStateOf(directoryFileCountAndSize(appFilesDir.absolutePath)) }
@@ -680,6 +684,8 @@ suspend fun importArchive(
     } finally {
       File(archivePath).delete()
     }
+  } else {
+    progressIndicator.value = false
   }
   return false
 }
@@ -691,14 +697,15 @@ private fun saveArchiveFromURI(importedArchiveURI: URI): String? {
     if (inputStream != null && archiveName != null) {
       val archivePath = "$databaseExportDir${File.separator}$archiveName"
       val destFile = File(archivePath)
-      Files.copy(inputStream, destFile.toPath())
+      Files.copy(inputStream, destFile.toPath(), StandardCopyOption.REPLACE_EXISTING)
       archivePath
     } else {
       Log.e(TAG, "saveArchiveFromURI null inputStream")
       null
     }
   } catch (e: Exception) {
-    Log.e(TAG, "saveArchiveFromURI error: ${e.message}")
+    AlertManager.shared.showAlertMsg(generalGetString(MR.strings.error_saving_database), e.stackTraceToString())
+    Log.e(TAG, "saveArchiveFromURI error: ${e.stackTraceToString()}")
     null
   }
 }

apps/multiplatform/common/src/commonMain/resources/MR/base/strings.xml

@@ -1339,6 +1339,7 @@
   <string name="chat_database_exported_migrate">You may migrate the exported database.</string>
   <string name="chat_database_exported_not_all_files">Some file(s) were not exported</string>
   <string name="chat_database_exported_continue">Continue</string>
+  <string name="error_saving_database">Error saving database</string>
 
   <!-- DatabaseEncryptionView.kt -->
   <string name="save_passphrase_in_keychain">Save passphrase in Keystore</string>