fix: make settings dialog recreation-safe

app/src/androidTest/java/space/hackenslacker/kanbn4droid/app/BoardsFlowTest.kt

@@ -492,6 +492,24 @@ class BoardsFlowTest {
             .check(matches(isDisplayed()))
     }
 
+    @Test
+    fun settingsDialogSurvivesActivityRecreate() {
+        MainActivity.dependencies.apiClientFactory = {
+            FakeBoardsApiClient(
+                boards = mutableListOf(BoardSummary("1", "Alpha")),
+                templates = emptyList(),
+            )
+        }
+
+        val scenario = ActivityScenario.launch(BoardsActivity::class.java)
+        openSettingsFromDrawer()
+
+        scenario.recreate()
+
+        onView(withId(R.id.settingsFragmentContainer)).check(matches(isDisplayed()))
+        onView(withId(R.id.settingsSaveAndCloseButton)).check(matches(isDisplayed()))
+    }
+
     private fun openSettingsFromDrawer() {
         onView(withId(R.id.boardsDrawerLayout)).perform(DrawerActions.open())
         onView(withId(R.id.drawerSettingsButton)).perform(click())

app/src/main/java/space/hackenslacker/kanbn4droid/app/BoardsActivity.kt

@@ -49,6 +49,15 @@ class BoardsActivity : AppCompatActivity() {
     private lateinit var apiKeyStore: ApiKeyStore
     private lateinit var apiClient: KanbnApiClient
 
+    internal val sessionStoreForSettingsDialog: SessionStore
+        get() = sessionStore
+
+    internal val apiKeyStoreForSettingsDialog: ApiKeyStore
+        get() = apiKeyStore
+
+    internal val apiClientForSettingsDialog: KanbnApiClient
+        get() = apiClient
+
     private lateinit var swipeRefresh: SwipeRefreshLayout
     private lateinit var recyclerView: RecyclerView
     private lateinit var emptyStateText: TextView
@@ -413,7 +422,6 @@ class BoardsActivity : AppCompatActivity() {
             val themeChanged = bundle.getBoolean(SettingsDialogFragment.RESULT_KEY_THEME_CHANGED)
             viewModel.onSettingsApplied(
                 credentialsChanged = credentialsChanged,
-                themeChanged = themeChanged,
             )
         }
     }
@@ -423,11 +431,7 @@ class BoardsActivity : AppCompatActivity() {
             return
         }
         SettingsDialogFragment
-            .newInstance(
-                sessionStore = sessionStore,
-                apiClient = apiClient,
-                apiKeyStore = apiKeyStore,
-            )
+            .newInstance()
             .show(supportFragmentManager, SettingsDialogFragment.TAG)
     }
 

app/src/main/java/space/hackenslacker/kanbn4droid/app/boards/BoardsViewModel.kt

@@ -129,7 +129,7 @@ class BoardsViewModel(
         fetchBoards(initial = false, refresh = true)
     }
 
-    fun onSettingsApplied(credentialsChanged: Boolean, themeChanged: Boolean) {
+    fun onSettingsApplied(credentialsChanged: Boolean) {
         if (!credentialsChanged) {
             return
         }

app/src/main/java/space/hackenslacker/kanbn4droid/app/settings/SettingsDialogFragment.kt

@@ -1,11 +1,13 @@
 package space.hackenslacker.kanbn4droid.app.settings
 
 import android.app.Dialog
+import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.widget.Button
 import android.widget.ProgressBar
 import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.os.bundleOf
 import androidx.fragment.app.DialogFragment
@@ -13,29 +15,36 @@ import androidx.fragment.app.commitNow
 import androidx.lifecycle.lifecycleScope
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import kotlinx.coroutines.launch
+import space.hackenslacker.kanbn4droid.app.BoardsActivity
 import space.hackenslacker.kanbn4droid.app.MainActivity
 import space.hackenslacker.kanbn4droid.app.R
 import space.hackenslacker.kanbn4droid.app.auth.ApiKeyStore
+import space.hackenslacker.kanbn4droid.app.auth.HttpKanbnApiClient
 import space.hackenslacker.kanbn4droid.app.auth.KanbnApiClient
+import space.hackenslacker.kanbn4droid.app.auth.PreferencesApiKeyStore
 import space.hackenslacker.kanbn4droid.app.auth.SettingsApplyCoordinator
 import space.hackenslacker.kanbn4droid.app.auth.SettingsApplyResult
+import space.hackenslacker.kanbn4droid.app.auth.SessionPreferences
 import space.hackenslacker.kanbn4droid.app.auth.SessionStore
 
-class SettingsDialogFragment(
-    internal var sessionStore: SessionStore? = null,
-    internal var apiClient: KanbnApiClient? = null,
-    internal var apiKeyStore: ApiKeyStore? = null,
-    internal var coordinator: SettingsApplyCoordinator? = null,
-) : DialogFragment() {
+class SettingsDialogFragment : DialogFragment() {
+    lateinit var sessionStore: SessionStore
+        private set
+
+    private lateinit var apiClient: KanbnApiClient
+    private lateinit var apiKeyStore: ApiKeyStore
+
     private var progress: ProgressBar? = null
     private var saveButton: Button? = null
     private var errorText: TextView? = null
     private var controlsEnabled: Boolean = true
 
+    override fun onAttach(context: Context) {
+        super.onAttach(context)
+        resolveDependencies(context)
+    }
+
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
-        val resolvedSessionStore = requireNotNull(sessionStore) { "SessionStore is required" }
-        val resolvedApiClient = requireNotNull(apiClient) { "KanbnApiClient is required" }
-        val resolvedApiKeyStore = requireNotNull(apiKeyStore) { "ApiKeyStore is required" }
         val dialogView = LayoutInflater.from(requireContext()).inflate(R.layout.dialog_settings, null)
 
         childFragmentManager.commitNow {
@@ -61,25 +70,21 @@ class SettingsDialogFragment(
 
         dialog.setOnShowListener {
             saveButton?.setOnClickListener {
-                onSaveClicked(resolvedSessionStore, resolvedApiClient, resolvedApiKeyStore)
+                onSaveClicked()
             }
             setApplyInProgress(false)
         }
         return dialog
     }
 
-    private fun onSaveClicked(
-        sessionStore: SessionStore,
-        apiClient: KanbnApiClient,
-        apiKeyStore: ApiKeyStore,
-    ) {
+    private fun onSaveClicked() {
         if (!controlsEnabled) {
             return
         }
 
-        val resolvedCoordinator = coordinator
-            ?: MainActivity.dependencies.settingsApplyCoordinatorFactory?.invoke(
-                requireActivity() as androidx.appcompat.app.AppCompatActivity,
+        val hostActivity = requireActivity() as AppCompatActivity
+        val resolvedCoordinator = MainActivity.dependencies.settingsApplyCoordinatorFactory?.invoke(
+                hostActivity,
                 sessionStore,
                 apiClient,
                 apiKeyStore,
@@ -177,6 +182,31 @@ class SettingsDialogFragment(
         AppCompatDelegate.setDefaultNightMode(mode)
     }
 
+    private fun resolveDependencies(context: Context) {
+        val host = activity as? BoardsActivity
+        if (host != null) {
+            sessionStore = host.sessionStoreForSettingsDialog
+            apiClient = host.apiClientForSettingsDialog
+            apiKeyStore = host.apiKeyStoreForSettingsDialog
+            return
+        }
+
+        val appCompatActivity = activity as? AppCompatActivity
+        if (appCompatActivity != null) {
+            sessionStore = MainActivity.dependencies.sessionStoreFactory?.invoke(appCompatActivity)
+                ?: SessionPreferences(appCompatActivity.applicationContext)
+            apiClient = MainActivity.dependencies.apiClientFactory?.invoke()
+                ?: HttpKanbnApiClient()
+            apiKeyStore = MainActivity.dependencies.apiKeyStoreFactory?.invoke(appCompatActivity)
+                ?: PreferencesApiKeyStore(appCompatActivity)
+            return
+        }
+
+        sessionStore = SessionPreferences(context.applicationContext)
+        apiClient = HttpKanbnApiClient()
+        apiKeyStore = PreferencesApiKeyStore(context)
+    }
+
     companion object {
         const val TAG: String = "settings_dialog"
         const val REQUEST_KEY_SETTINGS_APPLIED: String = "settings_applied_result"
@@ -185,18 +215,8 @@ class SettingsDialogFragment(
 
         private const val SETTINGS_PREFS_TAG: String = "settings_preferences_fragment"
 
-        fun newInstance(
-            sessionStore: SessionStore,
-            apiClient: KanbnApiClient,
-            apiKeyStore: ApiKeyStore,
-            coordinator: SettingsApplyCoordinator? = null,
-        ): SettingsDialogFragment {
-            return SettingsDialogFragment(
-                sessionStore = sessionStore,
-                apiClient = apiClient,
-                apiKeyStore = apiKeyStore,
-                coordinator = coordinator,
-            )
+        fun newInstance(): SettingsDialogFragment {
+            return SettingsDialogFragment()
         }
     }
 }

app/src/test/java/space/hackenslacker/kanbn4droid/app/boards/BoardsViewModelTest.kt

@@ -432,7 +432,7 @@ class BoardsViewModelTest {
         }
         val viewModel = newViewModel(api)
 
-        viewModel.onSettingsApplied(credentialsChanged = true, themeChanged = false)
+        viewModel.onSettingsApplied(credentialsChanged = true)
         advanceUntilIdle()
 
         assertTrue(api.listBoardsCalls >= 1)
@@ -449,7 +449,7 @@ class BoardsViewModelTest {
         }
         val viewModel = newViewModel(api)
 
-        viewModel.onSettingsApplied(credentialsChanged = false, themeChanged = true)
+        viewModel.onSettingsApplied(credentialsChanged = false)
         advanceUntilIdle()
 
         assertEquals(0, api.listBoardsCalls)
@@ -468,7 +468,7 @@ class BoardsViewModelTest {
         val viewModel = newViewModel(api, sessionStore = sessionStore)
 
         val eventDeferred = async { viewModel.events.first() }
-        viewModel.onSettingsApplied(credentialsChanged = true, themeChanged = false)
+        viewModel.onSettingsApplied(credentialsChanged = true)
         advanceUntilIdle()
 
         val event = eventDeferred.await()