[PM-10118] update selected generator type when returning to main tab. (#3942)

app/src/main/java/com/x8bit/bitwarden/ui/tools/feature/generator/GeneratorScreen.kt

@@ -54,9 +54,11 @@ import androidx.compose.ui.unit.DpSize
 import androidx.compose.ui.unit.dp
 import androidx.core.net.toUri
 import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.Lifecycle
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import com.x8bit.bitwarden.R
 import com.x8bit.bitwarden.ui.platform.base.util.EventsEffect
+import com.x8bit.bitwarden.ui.platform.base.util.LivecycleEventEffect
 import com.x8bit.bitwarden.ui.platform.base.util.toDp
 import com.x8bit.bitwarden.ui.platform.components.appbar.BitwardenMediumTopAppBar
 import com.x8bit.bitwarden.ui.platform.components.appbar.BitwardenTopAppBar
@@ -107,6 +109,16 @@ fun GeneratorScreen(
     val resources = context.resources
     val snackbarHostState = remember { SnackbarHostState() }
 
+    LivecycleEventEffect { _, event ->
+        when (event) {
+            Lifecycle.Event.ON_RESUME -> {
+                viewModel.trySendAction(GeneratorAction.LifecycleResume)
+            }
+
+            else -> Unit
+        }
+    }
+
     EventsEffect(viewModel = viewModel) { event ->
         when (event) {
             GeneratorEvent.NavigateToPasswordHistory -> onNavigateToPasswordHistory()

app/src/main/java/com/x8bit/bitwarden/ui/tools/feature/generator/GeneratorViewModel.kt

@@ -134,9 +134,16 @@ class GeneratorViewModel @Inject constructor(
             is GeneratorAction.MainTypeOptionSelect -> handleMainTypeOptionSelect(action)
             is GeneratorAction.MainType -> handleMainTypeAction(action)
             is GeneratorAction.Internal -> handleInternalAction(action)
+            GeneratorAction.LifecycleResume -> handleOnResumed()
         }
     }
 
+    private fun handleOnResumed() {
+        // when the screen resumes we need to refresh the options for the current option from
+        // disk in the event they were changed while the screen was in the foreground.
+        loadOptions(shouldUseStorageOptions = true)
+    }
+
     @Suppress("MaxLineLength")
     private fun handleMainTypeAction(action: GeneratorAction.MainType) {
         when (action) {
@@ -267,16 +274,36 @@ class GeneratorViewModel @Inject constructor(
 
     //region Generation Handlers
 
-    private fun loadOptions() {
+    private fun loadOptions(shouldUseStorageOptions: Boolean = false) {
         when (val selectedType = state.selectedType) {
-            is Passcode -> loadPasscodeOptions(
-                selectedType = selectedType,
-            )
+            is Passcode -> {
+                val mainType = if (shouldUseStorageOptions) {
+                    generatorRepository
+                        .getPasscodeGenerationOptions()
+                        ?.passcodeType
+                        ?.let { Passcode(it) }
+                        ?: selectedType
+                } else {
+                    selectedType
+                }
+                loadPasscodeOptions(selectedType = mainType)
+            }
 
-            is Username -> loadUsernameOptions(
-                selectedType = selectedType,
-                forceRegeneration = selectedType.selectedType !is ForwardedEmailAlias,
-            )
+            is Username -> {
+                val mainType = if (shouldUseStorageOptions) {
+                    generatorRepository
+                        .getUsernameGenerationOptions()
+                        ?.usernameType
+                        ?.let { Username(it) }
+                        ?: selectedType
+                } else {
+                    selectedType
+                }
+                loadUsernameOptions(
+                    selectedType = mainType,
+                    forceRegeneration = mainType.selectedType !is ForwardedEmailAlias,
+                )
+            }
         }
     }
 
@@ -2103,6 +2130,11 @@ data class GeneratorState(
  */
 sealed class GeneratorAction {
 
+    /**
+     * Indicates the UI has been entered a resumed lifecycle state.
+     */
+    data object LifecycleResume : GeneratorAction()
+
     /**
      * Indicates that the overflow option for password history has been clicked.
      */

app/src/test/java/com/x8bit/bitwarden/ui/tools/feature/generator/GeneratorScreenTest.kt

@@ -545,7 +545,8 @@ class GeneratorScreenTest : BaseComposeTest() {
             .performScrollTo()
             .performClick()
 
-        verify(exactly = 0) { viewModel.trySendAction(any()) }
+        verify(exactly = 1) { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+        verify(exactly = 1) { viewModel.trySendAction(any()) }
     }
 
     @Suppress("MaxLineLength")
@@ -573,7 +574,8 @@ class GeneratorScreenTest : BaseComposeTest() {
             .performScrollTo()
             .performClick()
 
-        verify(exactly = 0) { viewModel.trySendAction(any()) }
+        verify(exactly = 1) { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+        verify(exactly = 1) { viewModel.trySendAction(any()) }
     }
 
     @Suppress("MaxLineLength")
@@ -642,8 +644,8 @@ class GeneratorScreenTest : BaseComposeTest() {
             .filterToOne(hasContentDescription("\u2212"))
             .performScrollTo()
             .performClick()
-
-        verify(exactly = 0) { viewModel.trySendAction(any()) }
+        verify(exactly = 1) { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+        verify(exactly = 1) { viewModel.trySendAction(any()) }
     }
 
     @Suppress("MaxLineLength")
@@ -670,8 +672,8 @@ class GeneratorScreenTest : BaseComposeTest() {
             .filterToOne(hasContentDescription("+"))
             .performScrollTo()
             .performClick()
-
-        verify(exactly = 0) { viewModel.trySendAction(any()) }
+        verify(exactly = 1) { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+        verify(exactly = 1) { viewModel.trySendAction(any()) }
     }
 
     @Suppress("MaxLineLength")
@@ -1002,7 +1004,8 @@ class GeneratorScreenTest : BaseComposeTest() {
             .filterToOne(hasContentDescription("\u2212"))
             .performScrollTo()
             .performClick()
-        verify(exactly = 0) { viewModel.trySendAction(any()) }
+        verify(exactly = 1) { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+        verify(exactly = 1) { viewModel.trySendAction(any()) }
     }
 
     @Test
@@ -1030,7 +1033,8 @@ class GeneratorScreenTest : BaseComposeTest() {
             .filterToOne(hasContentDescription("+"))
             .performScrollTo()
             .performClick()
-        verify(exactly = 0) { viewModel.trySendAction(any()) }
+        verify(exactly = 1) { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+        verify(exactly = 1) { viewModel.trySendAction(any()) }
     }
 
     @Suppress("MaxLineLength")
@@ -1690,6 +1694,11 @@ class GeneratorScreenTest : BaseComposeTest() {
         }
     }
 
+    @Test
+    fun `send LifecycleResumed action on screen resume`() {
+        verify { viewModel.trySendAction(GeneratorAction.LifecycleResume) }
+    }
+
     //endregion Random Word Tests
 
     private fun updateState(state: GeneratorState) {

app/src/test/java/com/x8bit/bitwarden/ui/tools/feature/generator/GeneratorViewModelTest.kt

@@ -856,6 +856,114 @@ class GeneratorViewModelTest : BaseViewModelTest() {
         }
     }
 
+    @Test
+    fun `LifecycleResumedAction should use storage options derived state over VM state`() {
+        val initialState = initialUsernameState.copy(
+            selectedType = GeneratorState.MainType.Username(
+                selectedType = GeneratorState.MainType.Username.UsernameType.PlusAddressedEmail(
+                    email = "currentEmail",
+                ),
+            ),
+        )
+        val viewModel = createViewModel(initialState)
+        fakeGeneratorRepository.saveUsernameGenerationOptions(
+            UsernameGenerationOptions(
+                type = UsernameGenerationOptions.UsernameType.RANDOM_WORD,
+            ),
+        )
+        val expectedState = initialState.copy(
+            selectedType = GeneratorState.MainType.Username(
+                selectedType = GeneratorState.MainType.Username.UsernameType.RandomWord(),
+            ),
+            generatedText = "randomWord",
+        )
+        viewModel.trySendAction(GeneratorAction.LifecycleResume)
+        assertEquals(
+            expectedState,
+            viewModel.stateFlow.value,
+        )
+    }
+
+    @Test
+    fun `LifecycleResumedAction should use passcode storage options derived state over VM state`() {
+        val initialState = initialPasscodeState
+        val viewModel = createViewModel(initialState)
+        fakeGeneratorRepository.savePasscodeGenerationOptions(
+            PasscodeGenerationOptions(
+                type = PasscodeGenerationOptions.PasscodeType.PASSPHRASE,
+                length = 14,
+                allowAmbiguousChar = false,
+                hasNumbers = false,
+                minNumber = 3,
+                hasUppercase = false,
+                minUppercase = null,
+                hasLowercase = false,
+                minLowercase = null,
+                allowSpecial = false,
+                minSpecial = 0,
+                numWords = 3,
+                wordSeparator = "-",
+                allowCapitalize = false,
+                allowIncludeNumber = false,
+            ),
+        )
+        val expectedState = initialState.copy(
+            selectedType = GeneratorState.MainType.Passcode(
+                selectedType = GeneratorState.MainType.Passcode.PasscodeType.Passphrase(
+                    numWords = 3,
+                    minNumWords = 3,
+                    maxNumWords = 20,
+                    wordSeparator = '-',
+                    capitalize = false,
+                    capitalizeEnabled = true,
+                    includeNumber = false,
+                    includeNumberEnabled = true,
+
+                ),
+            ),
+            generatedText = "updatedPassphrase",
+        )
+        viewModel.trySendAction(GeneratorAction.LifecycleResume)
+        assertEquals(
+            expectedState,
+            viewModel.stateFlow.value,
+        )
+    }
+
+    @Suppress("MaxLineLength")
+    @Test
+    fun `No loadOptions with default arguments should use VM state options derived state over VM state`() =
+        runTest {
+            val initialState = initialUsernameState.copy(
+                selectedType = GeneratorState.MainType.Username(
+                    selectedType = GeneratorState.MainType.Username.UsernameType.PlusAddressedEmail(
+                        email = "currentEmail",
+                    ),
+                ),
+            )
+            val viewModel = createViewModel(initialState)
+            // the state is updated via the call to `loadOptions()` in the init block
+            viewModel.stateFlow.test {
+                assertEquals(
+                    initialState.copy(generatedText = "email+abcd1234@address.com"),
+                    awaitItem(),
+                )
+                // Setting the repository options to RANDOM_WORD to show this does NOT get used.
+                fakeGeneratorRepository.saveUsernameGenerationOptions(
+                    UsernameGenerationOptions(
+                        type = UsernameGenerationOptions.UsernameType.RANDOM_WORD,
+                    ),
+                )
+                // When this action is handled there will be another call to `loadOptions()`
+                // since we are using the default arguments with `shouldUseStorageOptions` set to
+                // false we should not expect a state update.
+                viewModel.trySendAction(
+                    GeneratorAction.Internal.PasswordGeneratorPolicyReceive(policies = emptyList()),
+                )
+                expectNoEvents()
+            }
+        }
+
     @Nested
     inner class PasswordActions {
         private val defaultPasswordState = createPasswordState()