Fix race condition when AuthActivity finished and resumes BrowseFiles

CloudList gets refreshed and token is updated, if the token update is faster, resuming overwrites the delegates in DispatchingCloudContentRepository again due to authentication fail because the old folder is used in the onFolderReloadContent because folder in BrowseFilesActivity isn't yet updated.

data/src/main/java/org/cryptomator/data/cloud/crypto/CryptoCloud.java

@@ -8,7 +8,7 @@ public class CryptoCloud implements Cloud {
 
 	private final Vault vault;
 
-	public CryptoCloud(Vault vault) {
+	CryptoCloud(Vault vault) {
 		this.vault = vault;
 	}
 

domain/src/main/java/org/cryptomator/domain/usecases/vault/ReloadVault.java

@@ -1,24 +0,0 @@
-package org.cryptomator.domain.usecases.vault;
-
-import org.cryptomator.domain.Vault;
-import org.cryptomator.domain.exception.BackendException;
-import org.cryptomator.domain.repository.VaultRepository;
-import org.cryptomator.generator.Parameter;
-import org.cryptomator.generator.UseCase;
-
-@UseCase
-class ReloadVault {
-
-	private final VaultRepository vaultRepository;
-	private final Vault vault;
-
-	public ReloadVault(VaultRepository vaultRepository, @Parameter Vault vault) {
-		this.vaultRepository = vaultRepository;
-		this.vault = vault;
-	}
-
-	public Vault execute() throws BackendException {
-		return vaultRepository.load(vault.getId());
-	}
-
-}

presentation/src/main/java/org/cryptomator/presentation/presenter/BrowseFilesPresenter.kt

@@ -6,8 +6,8 @@ import android.content.Intent
 import android.net.Uri
 import android.provider.DocumentsContract
 import android.widget.Toast
-import org.cryptomator.data.cloud.crypto.CryptoCloud
 import org.cryptomator.data.cloud.crypto.CryptoFolder
+import org.cryptomator.domain.Cloud
 import org.cryptomator.domain.CloudFile
 import org.cryptomator.domain.CloudFolder
 import org.cryptomator.domain.CloudNode
@@ -23,6 +23,7 @@ import org.cryptomator.domain.usecases.CloudFolderRecursiveListing
 import org.cryptomator.domain.usecases.CloudNodeRecursiveListing
 import org.cryptomator.domain.usecases.CopyDataUseCase
 import org.cryptomator.domain.usecases.DownloadFile
+import org.cryptomator.domain.usecases.GetDecryptedCloudForVaultUseCase
 import org.cryptomator.domain.usecases.ResultRenamed
 import org.cryptomator.domain.usecases.cloud.CreateFolderUseCase
 import org.cryptomator.domain.usecases.cloud.DeleteNodesUseCase
@@ -110,6 +111,7 @@ class BrowseFilesPresenter @Inject constructor( //
 	private val moveFilesUseCase: MoveFilesUseCase,  //
 	private val moveFoldersUseCase: MoveFoldersUseCase,  //
 	private val getCloudListRecursiveUseCase: GetCloudListRecursiveUseCase,  //
+	private val getDecryptedCloudForVaultUseCase: GetDecryptedCloudForVaultUseCase, //
 	private val contentResolverUtil: ContentResolverUtil,  //
 	private val addExistingVaultWorkflow: AddExistingVaultWorkflow,  //
 	private val createNewVaultWorkflow: CreateNewVaultWorkflow,  //
@@ -132,6 +134,8 @@ class BrowseFilesPresenter @Inject constructor( //
 	private lateinit var existingFilesForUpload: MutableMap<String, UploadFile>
 	private lateinit var downloadFiles: MutableList<DownloadFile>
 
+	private var resumedAfterAuthentication = false
+
 	@InjectIntent
 	lateinit var intent: BrowseFilesIntent
 
@@ -206,6 +210,7 @@ class BrowseFilesPresenter @Inject constructor( //
 					view?.showLoading(false)
 					when {
 						authenticationExceptionHandler.handleAuthenticationException(this@BrowseFilesPresenter, e, ActivityResultCallbacks.getCloudListAfterAuthentication(cloudFolderModel)) -> {
+							resumedAfterAuthentication = true
 							return
 						}
 						e is EmptyDirFileException -> {
@@ -225,24 +230,42 @@ class BrowseFilesPresenter @Inject constructor( //
 			})
 	}
 
-	@Callback
+	@Callback(dispatchResultOkOnly = false)
 	fun getCloudListAfterAuthentication(result: ActivityResult, cloudFolderModel: CloudFolderModel) {
-		val cloudModel = result.getSingleResult(CloudModel::class.java)
-		val cloudNode = cloudFolderModel.toCloudNode()
-
-		val updatedCloud = if (cloudNode is CryptoFolder) {
-			CryptoCloud(Vault.aCopyOf(cloudFolderModel.vault()?.toVault()).withCloud(cloudModel.toCloud()).build())
+		resumedAfterAuthentication = false
+		if(result.isResultOk) {
+			val cloudModel = result.getSingleResult(CloudModel::class.java) // FIXME update other vaults using this cloud as well
+			val cloudNode = cloudFolderModel.toCloudNode()
+			if (cloudNode is CryptoFolder) {
+				updatedDecryptedCloudFor(Vault.aCopyOf(cloudFolderModel.vault()!!.toVault()).withCloud(cloudModel.toCloud()).build(), cloudFolderModel)
+			} else {
+				updatePlaintextCloud(cloudFolderModel, cloudModel)
+			}
 		} else {
-			cloudModel.toCloud()
+			Timber.tag("BrowseFilesPresenter").e("Authentication failed")
 		}
+	}
 
-		cloudNode.withCloud(updatedCloud)?.let {
+	private fun updatePlaintextCloud(cloudFolderModel: CloudFolderModel, updatedCloud: CloudModel) {
+		cloudFolderModel.toCloudNode().withCloud(updatedCloud.toCloud())?.let {
 			val folder = cloudFolderModelMapper.toModel(it)
 			view?.updateActiveFolderDueToAuthenticationProblem(folder)
 			getCloudList(folder)
 		} ?: throw FatalBackendException("cloudFolderModel with updated Cloud shouldn't be null")
 	}
 
+	private fun updatedDecryptedCloudFor(vault: Vault, cloudFolderModel: CloudFolderModel) {
+		getDecryptedCloudForVaultUseCase //
+			.withVault(vault) //
+			.run(object : DefaultResultHandler<Cloud>() {
+				override fun onSuccess(cloud: Cloud) {
+					val folder = cloudFolderModelMapper.toModel(cloudFolderModel.toCloudNode().withCloud(cloud)!!)
+					view?.updateActiveFolderDueToAuthenticationProblem(folder)
+					getCloudList(folder)
+				}
+			})
+	}
+
 	fun onCreateFolderPressed(cloudFolder: CloudFolderModel, folderName: String?) {
 		createFolderUseCase //
 			.withParent(cloudFolder.toCloudNode()) //
@@ -1128,7 +1151,9 @@ class BrowseFilesPresenter @Inject constructor( //
 	}
 
 	fun onFolderReloadContent(folder: CloudFolderModel) {
-		getCloudList(folder)
+		if(!resumedAfterAuthentication) {
+			getCloudList(folder)
+		}
 	}
 
 	fun onExportFolderClicked(cloudFolder: CloudFolderModel, exportTriggeredByUser: ExportOperation) {
@@ -1262,6 +1287,7 @@ class BrowseFilesPresenter @Inject constructor( //
 	companion object {
 
 		const val OPEN_FILE_FINISHED = 12
+
 		val EXPORT_AFTER_APP_CHOOSER: ExportOperation = object : ExportOperation {
 			override fun export(presenter: BrowseFilesPresenter, downloadFiles: List<DownloadFile>) {
 				presenter.copyFile(downloadFiles)
@@ -1285,7 +1311,8 @@ class BrowseFilesPresenter @Inject constructor( //
 			renameFolderUseCase,  //
 			copyDataUseCase,  //
 			moveFilesUseCase,  //
-			moveFoldersUseCase
+			moveFoldersUseCase, //
+			getDecryptedCloudForVaultUseCase
 		)
 		this.authenticationExceptionHandler = authenticationExceptionHandler
 	}