Fix outgoing session verification stuck with incomplete recovery setup (#7433)

features/verifysession/impl/src/main/kotlin/io/element/android/features/verifysession/impl/outgoing/OutgoingVerificationStateMachine.kt

@@ -15,7 +15,6 @@ import com.freeletics.flowredux.dsl.FlowReduxStateMachine
 import io.element.android.features.verifysession.impl.util.andLogStateChange
 import io.element.android.features.verifysession.impl.util.logReceivedEvents
 import io.element.android.libraries.core.bool.orFalse
-import io.element.android.libraries.core.data.tryOrNull
 import io.element.android.libraries.matrix.api.encryption.EncryptionService
 import io.element.android.libraries.matrix.api.encryption.RecoveryState
 import io.element.android.libraries.matrix.api.verification.SessionVerificationData
@@ -23,6 +22,7 @@ import io.element.android.libraries.matrix.api.verification.SessionVerificationS
 import io.element.android.libraries.matrix.api.verification.VerificationRequest
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.FlowPreview
+import kotlinx.coroutines.TimeoutCancellationException
 import kotlinx.coroutines.flow.filter
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.timeout
@@ -95,10 +95,13 @@ class OutgoingVerificationStateMachine(
                     // If a key backup exists, wait until it's restored or a timeout happens
                     val hasBackup = encryptionService.doesBackupExistOnServer().getOrNull().orFalse()
                     if (hasBackup) {
-                        tryOrNull {
-                            encryptionService.recoveryStateStateFlow.filter { it == RecoveryState.ENABLED }
+                        try {
+                            encryptionService.recoveryStateStateFlow
+                                .filter { it == RecoveryState.ENABLED || it == RecoveryState.DISABLED || it == RecoveryState.INCOMPLETE }
                                 .timeout(10.seconds)
                                 .first()
+                        } catch (_: TimeoutCancellationException) {
+                            // The backup was not restored in time, proceed to the Completed state anyway
                         }
                     }
                     state.override { State.Completed.andLogStateChange() }

features/verifysession/impl/src/test/kotlin/io/element/android/features/verifysession/impl/outgoing/OutgoingVerificationPresenterTest.kt

@@ -16,6 +16,7 @@ import io.element.android.features.verifysession.impl.outgoing.OutgoingVerificat
 import io.element.android.libraries.architecture.AsyncData
 import io.element.android.libraries.matrix.api.core.UserId
 import io.element.android.libraries.matrix.api.encryption.EncryptionService
+import io.element.android.libraries.matrix.api.encryption.RecoveryState
 import io.element.android.libraries.matrix.api.verification.SessionVerificationData
 import io.element.android.libraries.matrix.api.verification.SessionVerificationService
 import io.element.android.libraries.matrix.api.verification.SessionVerifiedStatus
@@ -216,6 +217,85 @@ class OutgoingVerificationPresenterTest {
         }
     }
 
+    @Test
+    fun `present - When verification is approved and a backup exists but recovery is disabled, the flow completes`() = runTest {
+        val service = unverifiedSessionService(
+            requestUserVerificationLambda = { },
+            startSasVerificationLambda = { },
+            approveVerificationLambda = { },
+        )
+        val encryptionService = FakeEncryptionService().apply {
+            givenDoesBackupExistOnServerResult(Result.success(true))
+            recoveryStateStateFlow.value = RecoveryState.DISABLED
+        }
+        val presenter = createOutgoingVerificationPresenter(
+            service = service,
+            verificationRequest = anOutgoingUserVerificationRequest(),
+            encryptionService = encryptionService,
+        )
+        presenter.test {
+            val state = requestVerificationAndAwaitVerifyingState(service)
+            state.eventSink(OutgoingVerificationViewEvents.ConfirmVerification)
+            assertThat(awaitItem().step).isInstanceOf(Step.Verifying::class.java)
+            service.emitVerificationFlowState(VerificationFlowState.DidFinish)
+            assertThat(awaitItem().step).isEqualTo(Step.Completed)
+            cancelAndIgnoreRemainingEvents()
+        }
+    }
+
+    @Test
+    fun `present - When verification is approved and a backup exists but recovery is incomplete, the flow completes`() = runTest {
+        val service = unverifiedSessionService(
+            requestUserVerificationLambda = { },
+            startSasVerificationLambda = { },
+            approveVerificationLambda = { },
+        )
+        val encryptionService = FakeEncryptionService().apply {
+            givenDoesBackupExistOnServerResult(Result.success(true))
+            recoveryStateStateFlow.value = RecoveryState.INCOMPLETE
+        }
+        val presenter = createOutgoingVerificationPresenter(
+            service = service,
+            verificationRequest = anOutgoingUserVerificationRequest(),
+            encryptionService = encryptionService,
+        )
+        presenter.test {
+            val state = requestVerificationAndAwaitVerifyingState(service)
+            state.eventSink(OutgoingVerificationViewEvents.ConfirmVerification)
+            assertThat(awaitItem().step).isInstanceOf(Step.Verifying::class.java)
+            service.emitVerificationFlowState(VerificationFlowState.DidFinish)
+            assertThat(awaitItem().step).isEqualTo(Step.Completed)
+            cancelAndIgnoreRemainingEvents()
+        }
+    }
+
+    @Test
+    fun `present - When verification is approved but the recovery state is not determined, the flow completes after the timeout`() = runTest {
+        val service = unverifiedSessionService(
+            requestUserVerificationLambda = { },
+            startSasVerificationLambda = { },
+            approveVerificationLambda = { },
+        )
+        val encryptionService = FakeEncryptionService().apply {
+            givenDoesBackupExistOnServerResult(Result.success(true))
+        }
+        val presenter = createOutgoingVerificationPresenter(
+            service = service,
+            verificationRequest = anOutgoingUserVerificationRequest(),
+            encryptionService = encryptionService,
+        )
+        presenter.test {
+            val state = requestVerificationAndAwaitVerifyingState(service)
+            state.eventSink(OutgoingVerificationViewEvents.ConfirmVerification)
+            assertThat(awaitItem().step).isInstanceOf(Step.Verifying::class.java)
+            service.emitVerificationFlowState(VerificationFlowState.DidFinish)
+            // The recovery state never leaves UNKNOWN, so the 10 seconds timeout fires and the flow completes anyway
+            this@runTest.advanceUntilIdle()
+            assertThat(awaitItem().step).isEqualTo(Step.Completed)
+            cancelAndIgnoreRemainingEvents()
+        }
+    }
+
     @Test
     fun `present - When verification is declined, the flow is canceled`() = runTest {
         val service = unverifiedSessionService(