unified warning panel for all screens

app/src/main/java/com/nextcloud/talk/account/ServerSelectionActivity.kt

@@ -34,7 +34,6 @@ import com.nextcloud.talk.activities.BaseActivity
 import com.nextcloud.talk.api.NcApi
 import com.nextcloud.talk.application.NextcloudTalkApplication
 import com.nextcloud.talk.application.NextcloudTalkApplication.Companion.sharedApplication
-import com.nextcloud.talk.data.network.NetworkMonitor
 import com.nextcloud.talk.databinding.ActivityServerSelectionBinding
 import com.nextcloud.talk.models.json.capabilities.CapabilitiesOverall
 import com.nextcloud.talk.models.json.generic.Status
@@ -66,9 +65,6 @@ class ServerSelectionActivity : BaseActivity() {
     @Inject
     lateinit var userManager: UserManager
 
-    @Inject
-    lateinit var networkMonitor: NetworkMonitor
-
     private var statusQueryDisposable: Disposable? = null
 
     private val onBackPressedCallback = object : OnBackPressedCallback(true) {

app/src/main/java/com/nextcloud/talk/activities/BaseActivity.kt

@@ -24,11 +24,22 @@ import android.view.inputmethod.EditorInfo
 import android.webkit.SslErrorHandler
 import android.widget.EditText
 import android.widget.Toast
+import androidx.activity.compose.setContent
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.consumeWindowInsets
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.statusBars
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
 import androidx.core.content.res.ResourcesCompat
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import autodagger.AutoInjector
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.nextcloud.talk.R
@@ -38,9 +49,15 @@ import com.nextcloud.talk.account.ServerSelectionActivity
 import com.nextcloud.talk.account.SwitchAccountActivity
 import com.nextcloud.talk.application.NextcloudTalkApplication
 import com.nextcloud.talk.chat.ChatActivity
+import com.nextcloud.talk.components.StatusBannerRow
+import com.nextcloud.talk.data.network.NetworkMonitor
 import com.nextcloud.talk.events.CertificateEvent
 import com.nextcloud.talk.events.RemoteWipeEvent
+import com.nextcloud.talk.events.ServerStatus
+import com.nextcloud.talk.events.ServerStatusEvent
+import com.nextcloud.talk.activities.MainActivity
 import com.nextcloud.talk.lock.LockedActivity
+import com.nextcloud.talk.utils.HttpStatusInterceptor
 import com.nextcloud.talk.utils.SecurityUtils
 import com.nextcloud.talk.ui.theme.ViewThemeUtils
 import com.nextcloud.talk.utils.DisplayUtils
@@ -54,6 +71,9 @@ import com.nextcloud.talk.utils.message.MessageUtils
 import com.nextcloud.talk.utils.preferences.AppPreferences
 import com.nextcloud.talk.logger.Logger
 import com.nextcloud.talk.utils.ssl.TrustManager
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import org.greenrobot.eventbus.EventBus
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
@@ -96,6 +116,48 @@ open class BaseActivity : AppCompatActivity() {
     @Inject
     lateinit var logger: Logger
 
+    @Inject
+    lateinit var networkMonitor: NetworkMonitor
+
+    @Inject
+    lateinit var httpStatusInterceptor: HttpStatusInterceptor
+
+    private val maintenanceModeState = MutableStateFlow(false)
+    val maintenanceModeFlow: StateFlow<Boolean> = maintenanceModeState.asStateFlow()
+
+    /**
+     * [setContent] with the offline/maintenance-mode [StatusBannerRow] pushed above [content],
+     * for screens that are fully written in Compose. Chat is XML-rooted with Compose islands and
+     * keeps its own banner instead of using this.
+     */
+    protected fun setContentWithStatusBanner(content: @Composable () -> Unit) {
+        setContent {
+            val isOnline by networkMonitor.isOnline.collectAsStateWithLifecycle()
+            val isMaintenanceMode by maintenanceModeFlow.collectAsStateWithLifecycle()
+            val showBanner = !isOnline || isMaintenanceMode
+            Column(modifier = Modifier.fillMaxSize()) {
+                StatusBannerRow(isOffline = !isOnline, isMaintenanceMode = isMaintenanceMode)
+                // content() itself emits bare sibling composables (e.g. ColoredStatusBar() next to
+                // the screen), which rely on being at the composition root to overlay rather than
+                // stack. Confining them to a single weighted Box here preserves that overlay
+                // behavior while still reserving exactly the space below the banner for them.
+                //
+                // Several screens also apply their own statusBarsPadding()/Scaffold insets that
+                // assume they sit at the true top of the window. Once the banner is visible it has
+                // already claimed that inset (StatusBannerRow pads itself for it), so mark it
+                // consumed here — any statusBarsPadding() further down then adds nothing extra,
+                // avoiding a doubled gap under the banner.
+                Box(
+                    modifier = Modifier
+                        .weight(1f)
+                        .let { if (showBanner) it.consumeWindowInsets(WindowInsets.statusBars) else it }
+                ) {
+                    content()
+                }
+            }
+        }
+    }
+
     open val appBarLayoutType: AppBarLayoutType
         get() = AppBarLayoutType.TOOLBAR
 
@@ -136,6 +198,33 @@ open class BaseActivity : AppCompatActivity() {
         cleanTempCertPreference()
     }
 
+    /**
+     * The account whose [ServerStatusEvent]s should drive [maintenanceModeFlow] for this screen.
+     * Defaults to the globally active account; override when a screen shows a different,
+     * specific account (e.g. a non-active account selected via an intent extra).
+     */
+    protected open fun accountIdForStatusBanner(): Long? = currentUserProviderOld.currentUser.blockingGet()?.id
+
+    override fun onPostCreate(savedInstanceState: Bundle?) {
+        super.onPostCreate(savedInstanceState)
+        maintenanceModeState.value = accountIdForStatusBanner()?.let {
+            httpStatusInterceptor.currentStatus(it) == ServerStatus.MAINTENANCE_MODE
+        } ?: false
+    }
+
+    @Subscribe(threadMode = ThreadMode.MAIN)
+    open fun onServerStatusEvent(event: ServerStatusEvent) {
+        if (event.accountId != accountIdForStatusBanner()) return
+
+        when (event.status) {
+            ServerStatus.MAINTENANCE_MODE -> maintenanceModeState.value = true
+            ServerStatus.OK -> maintenanceModeState.value = false
+            else -> {
+                // UNAUTHORIZED / CLIENT_UPDATE_REQUIRED are handled by ConversationsListActivity's dialogs
+            }
+        }
+    }
+
     public override fun onStart() {
         super.onStart()
         eventBus.register(this)

app/src/main/java/com/nextcloud/talk/chat/ChatActivity.kt

@@ -132,9 +132,10 @@ import com.nextcloud.talk.conversationinfo.viewmodel.ConversationInfoViewModel
 import com.nextcloud.talk.conversationlist.ConversationsListActivity
 import com.nextcloud.talk.dagger.modules.ViewModelFactoryWithParams
 import com.nextcloud.talk.data.database.model.SendStatus
-import com.nextcloud.talk.data.network.NetworkMonitor
 import com.nextcloud.talk.data.user.model.User
 import com.nextcloud.talk.databinding.ActivityChatBinding
+import com.nextcloud.talk.events.ServerStatus
+import com.nextcloud.talk.events.ServerStatusEvent
 import com.nextcloud.talk.events.UserMentionClickEvent
 import com.nextcloud.talk.events.WebSocketCommunicationEvent
 import com.nextcloud.talk.jobs.DeleteConversationWorker
@@ -284,9 +285,6 @@ class ChatActivity :
     @Inject
     lateinit var viewModelFactory: ViewModelProvider.Factory
 
-    @Inject
-    lateinit var networkMonitor: NetworkMonitor
-
     @Inject
     lateinit var chatViewModelFactory: ChatViewModel.ChatViewModelFactory
 
@@ -617,6 +615,11 @@ class ChatActivity :
             currentUserProvider.getCurrentUser()
                 .onSuccess { user ->
                     conversationUser = user
+                    user.id?.let { accountId ->
+                        chatViewModel.setMaintenanceMode(
+                            httpStatusInterceptor.currentStatus(accountId) == ServerStatus.MAINTENANCE_MODE
+                        )
+                    }
                     handleIntent(intent)
                     val urlForChatting = ApiUtils.getUrlForChat(chatApiVersion, conversationUser?.baseUrl, roomToken)
                     val credentials = ApiUtils.getCredentials(conversationUser!!.username, conversationUser!!.token)
@@ -3999,6 +4002,13 @@ class ChatActivity :
         }
     }
 
+    @Subscribe(threadMode = ThreadMode.MAIN)
+    override fun onServerStatusEvent(event: ServerStatusEvent) {
+        super.onServerStatusEvent(event)
+        if (!::conversationUser.isInitialized || event.accountId != conversationUser.id) return
+        chatViewModel.setMaintenanceMode(event.status == ServerStatus.MAINTENANCE_MODE)
+    }
+
     fun sendPictureFromCamIntent() {
         if (!permissionUtil.isCameraPermissionGranted()) {
             requestCameraPermissions()

app/src/main/java/com/nextcloud/talk/chat/MessageInputFragment.kt

@@ -300,6 +300,12 @@ class MessageInputFragment : Fragment() {
                 binding.fragmentCallStarted.visibility = if (hasCall) View.VISIBLE else View.GONE
             }
         }
+
+        viewLifecycleOwner.lifecycleScope.launch {
+            chatActivity.chatViewModel.maintenanceModeFlow.collect { isMaintenanceMode ->
+                binding.fragmentMaintenanceMode.visibility = if (isMaintenanceMode) View.VISIBLE else View.GONE
+            }
+        }
     }
 
     private fun setReactionsOnly(spreedCapabilities: SpreedCapability) {

app/src/main/java/com/nextcloud/talk/chat/ScheduledMessagesActivity.kt

@@ -11,7 +11,6 @@ import android.content.ClipData
 import android.content.ClipboardManager
 import android.content.Intent
 import android.os.Bundle
-import androidx.activity.compose.setContent
 import androidx.annotation.DrawableRes
 import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.animation.core.tween
@@ -93,7 +92,6 @@ import com.nextcloud.talk.chat.ui.model.MessageTypeContent
 import com.nextcloud.talk.chat.ui.model.toScheduledMessageUiModel
 import com.nextcloud.talk.chat.viewmodels.ScheduledMessagesViewModel
 import com.nextcloud.talk.components.ColoredStatusBar
-import com.nextcloud.talk.data.network.NetworkMonitor
 import com.nextcloud.talk.data.user.model.User
 import com.nextcloud.talk.extensions.toIntOrZero
 import com.nextcloud.talk.models.json.chat.ChatUtils
@@ -134,9 +132,6 @@ class ScheduledMessagesActivity : BaseActivity() {
 
     private lateinit var scheduledMessagesViewModel: ScheduledMessagesViewModel
 
-    @Inject
-    lateinit var networkMonitor: NetworkMonitor
-
     private val roomToken: String by lazy {
         intent.getStringExtra(ROOM_TOKEN).orEmpty()
     }
@@ -166,7 +161,7 @@ class ScheduledMessagesActivity : BaseActivity() {
         NextcloudTalkApplication.sharedApplication!!.componentApplication.inject(this)
         scheduledMessagesViewModel = ViewModelProvider(this, viewModelFactory)[ScheduledMessagesViewModel::class.java]
 
-        setContent {
+        setContentWithStatusBanner {
             val colorScheme = viewThemeUtils.getColorScheme(this)
             val currentUser by scheduledMessagesViewModel.currentUserState.collectAsStateWithLifecycle()
             LaunchedEffect(Unit) {

app/src/main/java/com/nextcloud/talk/chat/viewmodels/ChatViewModel.kt

@@ -96,6 +96,7 @@ import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.flow.debounce
@@ -405,6 +406,13 @@ class ChatViewModel @AssistedInject constructor(
 
     val isLoadingFlow = chatRepository.isLoadingFlow
 
+    private val _maintenanceModeFlow = MutableStateFlow(false)
+    val maintenanceModeFlow: StateFlow<Boolean> = _maintenanceModeFlow.asStateFlow()
+
+    fun setMaintenanceMode(active: Boolean) {
+        _maintenanceModeFlow.value = active
+    }
+
     sealed interface ViewState
 
     object GetReminderStartState : ViewState

app/src/main/java/com/nextcloud/talk/conversationlist/ui/StatusBanner.kt → app/src/main/java/com/nextcloud/talk/components/StatusBanner.kt

@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: GPL-3.0-or-later
  */
 
-package com.nextcloud.talk.conversationlist.ui
+package com.nextcloud.talk.components
 
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.expandVertically
@@ -14,6 +14,7 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
@@ -25,9 +26,17 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import com.nextcloud.talk.R
 
+/**
+ * Row of full-width red banners for offline/maintenance-mode status, meant to sit at the very
+ * top of a screen. Self-contained regarding the status bar inset: [Modifier.statusBarsPadding] is
+ * only applied when a row is actually visible, so a screen that drops this in gets zero extra
+ * space reserved in the common case (nothing showing) and correct clearance from the status bar
+ * whenever a row appears.
+ */
 @Composable
 fun StatusBannerRow(isOffline: Boolean, isMaintenanceMode: Boolean) {
-    Column {
+    val showBanner = isOffline || isMaintenanceMode
+    Column(modifier = if (showBanner) Modifier.statusBarsPadding() else Modifier) {
         AnimatedVisibility(
             visible = isOffline,
             enter = expandVertically(),

app/src/main/java/com/nextcloud/talk/contacts/ContactsActivity.kt

@@ -10,7 +10,6 @@ package com.nextcloud.talk.contacts
 
 import android.annotation.SuppressLint
 import android.os.Bundle
-import androidx.activity.compose.setContent
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.remember
 import androidx.lifecycle.ViewModelProvider
@@ -37,7 +36,7 @@ class ContactsActivity : BaseActivity() {
         super.onCreate(savedInstanceState)
         NextcloudTalkApplication.sharedApplication!!.componentApplication.inject(this)
         contactsViewModel = ViewModelProvider(this, viewModelFactory)[ContactsViewModel::class.java]
-        setContent {
+        setContentWithStatusBanner {
             val isAddParticipants = intent.getBooleanExtra(BundleKeys.KEY_ADD_PARTICIPANTS, false)
             val hideAlreadyAddedParticipants = intent.getBooleanExtra(KEY_HIDE_ALREADY_EXISTING_PARTICIPANTS, false)
             contactsViewModel.getContactsFromSearchParams()

app/src/main/java/com/nextcloud/talk/conversationcreation/ConversationCreationActivity.kt

@@ -17,7 +17,6 @@ import android.net.Uri
 import android.os.Bundle
 import androidx.activity.compose.ManagedActivityResultLauncher
 import androidx.activity.compose.rememberLauncherForActivityResult
-import androidx.activity.compose.setContent
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.background
@@ -128,7 +127,7 @@ class ConversationCreationActivity : BaseActivity() {
         val conversationUser = conversationCreationViewModel.currentUser
         pickImage = PickImage(this, conversationUser)
 
-        setContent {
+        setContentWithStatusBanner {
             val colorScheme = viewThemeUtils.getColorScheme(this)
             val context = LocalContext.current
             MaterialTheme(

app/src/main/java/com/nextcloud/talk/conversationinfo/ConversationInfoActivity.kt

@@ -11,7 +11,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.util.Log
 import android.view.LayoutInflater
-import androidx.activity.compose.setContent
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
@@ -214,7 +213,7 @@ class ConversationInfoActivity : BaseActivity() {
 
     private fun setupCompose() {
         val colorScheme = viewThemeUtils.getColorScheme(this)
-        setContent {
+        setContentWithStatusBanner {
             val uiState by viewModel.uiState.collectAsStateWithLifecycle()
             val snackbarHostState = remember { SnackbarHostState() }
 

app/src/main/java/com/nextcloud/talk/conversationinfoedit/ConversationInfoEditActivity.kt

@@ -9,7 +9,6 @@ package com.nextcloud.talk.conversationinfoedit
 
 import android.os.Bundle
 import android.util.Log
-import androidx.activity.compose.setContent
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.material3.MaterialTheme
@@ -101,7 +100,7 @@ class ConversationInfoEditActivity : BaseActivity() {
 
     private fun setupCompose() {
         val colorScheme = viewThemeUtils.getColorScheme(this)
-        setContent {
+        setContentWithStatusBanner {
             val uiState by conversationInfoEditViewModel.uiState.collectAsStateWithLifecycle()
             val snackbarHostState = remember { SnackbarHostState() }
             val userMessage = uiState.userMessage
@@ -138,7 +137,9 @@ class ConversationInfoEditActivity : BaseActivity() {
                             )
                         },
                         onAvatarCameraClick = {
-                            pickImage?.takePicture(startTakePictureIntentForResult = startTakePictureIntentForResult)
+                            pickImage?.takePicture(
+                                startTakePictureIntentForResult = startTakePictureIntentForResult
+                            )
                         },
                         onAvatarDeleteClick = { conversationInfoEditViewModel.deleteAvatar() },
                         onAvatarEmojiAvatarConfirmed = { emoji, color ->