Release 0.2.0 (#150)

Release Notes

* Bumped haze, agp, and guava dependencies
* Implemented ordering functionality for friends list
* Added scroll to top feature in friends and conversations screens
* Improved messages handling
* Fixed coloring issues
* Cache improvements
* Implemented logout functionality
* Implemented new authorization flow (no auto-token re-request)
* Added support for sticker pack preview attachments
* Bump LongPoll to version 19
* Markdown support for messages bubbles
* Adjust app name font size based on screen width

---------

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

app/src/main/kotlin/dev/meloda/fast/MainViewModel.kt

@@ -24,6 +24,7 @@ import dev.meloda.fast.datastore.UserSettings
 import dev.meloda.fast.domain.GetCurrentAccountUseCase
 import dev.meloda.fast.domain.LoadUserByIdUseCase
 import dev.meloda.fast.model.BaseError
+import dev.meloda.fast.model.api.domain.VkUser
 import dev.meloda.fast.navigation.Main
 import dev.meloda.fast.settings.navigation.Settings
 import kotlinx.coroutines.Dispatchers
@@ -36,14 +37,13 @@ interface MainViewModel {
 
     val startDestination: StateFlow<Any?>
     val isNeedToReplaceWithAuth: StateFlow<Boolean>
+    val currentUser: StateFlow<VkUser?>
 
     val isNeedToShowNotificationsDeniedDialog: StateFlow<Boolean>
     val isNeedToShowNotificationsRationaleDialog: StateFlow<Boolean>
     val isNeedToCheckNotificationsPermission: StateFlow<Boolean>
     val isNeedToRequestNotifications: StateFlow<Boolean>
 
-    val profileImageUrl: StateFlow<String?>
-
     fun onError(error: BaseError)
 
     fun onNavigatedToAuth()
@@ -59,6 +59,8 @@ interface MainViewModel {
     fun onNotificationsDeniedDialogDismissed()
     fun onNotificationsRationaleDialogDismissed()
     fun onNotificationsRationaleDialogCancelClicked()
+
+    fun onUserAuthenticated()
 }
 
 class MainViewModelImpl(
@@ -70,24 +72,24 @@ class MainViewModelImpl(
 
     override val startDestination = MutableStateFlow<Any?>(null)
     override val isNeedToReplaceWithAuth = MutableStateFlow(false)
+    override val currentUser = MutableStateFlow<VkUser?>(null)
 
     override val isNeedToShowNotificationsDeniedDialog = MutableStateFlow(false)
     override val isNeedToShowNotificationsRationaleDialog = MutableStateFlow(false)
     override val isNeedToCheckNotificationsPermission = MutableStateFlow(false)
     override val isNeedToRequestNotifications = MutableStateFlow(false)
 
-    override val profileImageUrl = MutableStateFlow<String?>(null)
-
     private var openNotificationsSettings = false
     private var openAppSettings = false
 
     override fun onError(error: BaseError) {
         when (error) {
-            BaseError.SessionExpired -> {
+            BaseError.SessionExpired,
+            BaseError.AccountBlocked -> {
                 isNeedToReplaceWithAuth.update { true }
             }
 
-            is BaseError.SimpleError -> Unit // TODO: 21-Mar-25, Danil Nikolaev: show error in ui
+            else -> Unit // TODO: 21-Mar-25, Danil Nikolaev: show error in ui
         }
     }
 
@@ -170,17 +172,20 @@ class MainViewModelImpl(
         disableBackgroundLongPoll()
     }
 
+    override fun onUserAuthenticated() {
+        loadProfile()
+    }
+
     private fun loadProfile() {
         loadUserByIdUseCase(userId = null)
             .listenValue(viewModelScope) { state ->
                 state.processState(
                     error = { error ->
-                        profileImageUrl.emit(null)
+                        currentUser.emit(null)
                     },
                     success = { response ->
                         val user = response ?: return@listenValue
-
-                        profileImageUrl.emit(user.photo100)
+                        currentUser.emit(user)
                     }
                 )
             }

app/src/main/kotlin/dev/meloda/fast/common/di/ApplicationModule.kt

@@ -51,7 +51,6 @@ val applicationModule = module {
         createChatModule
     )
 
-    // TODO: 14/05/2024, Danil Nikolaev: research on memory leaks and potentials errors
     // TODO: 14/05/2024, Danil Nikolaev: extract all operations with preferences to standalone class
     singleOf(PreferenceManager::getDefaultSharedPreferences)
     single<Resources> { androidContext().resources }

app/src/main/kotlin/dev/meloda/fast/navigation/MainGraph.kt

@@ -2,8 +2,7 @@ package dev.meloda.fast.navigation
 
 import androidx.navigation.NavGraphBuilder
 import androidx.navigation.compose.composable
-import dev.meloda.fast.MainViewModel
-import dev.meloda.fast.conversations.navigation.Conversations
+import dev.meloda.fast.conversations.navigation.ConversationsGraph
 import dev.meloda.fast.friends.navigation.Friends
 import dev.meloda.fast.model.BaseError
 import dev.meloda.fast.model.BottomNavigationItem
@@ -22,11 +21,10 @@ object Main
 fun NavGraphBuilder.mainScreen(
     onError: (BaseError) -> Unit,
     onSettingsButtonClicked: () -> Unit,
-    onConversationClicked: (conversationId: Int) -> Unit,
+    onNavigateToMessagesHistory: (conversationId: Long) -> Unit,
     onPhotoClicked: (url: String) -> Unit,
-    onMessageClicked: (userId: Int) -> Unit,
-    onCreateChatClicked: () -> Unit,
-    viewModel: MainViewModel
+    onMessageClicked: (userid: Long) -> Unit,
+    onNavigateToCreateChat: () -> Unit
 ) {
     val navigationItems = ImmutableList.of(
         BottomNavigationItem(
@@ -39,7 +37,7 @@ fun NavGraphBuilder.mainScreen(
             titleResId = UiR.string.title_conversations,
             selectedIconResId = UiR.drawable.baseline_chat_24,
             unselectedIconResId = UiR.drawable.outline_chat_24,
-            route = Conversations
+            route = ConversationsGraph
         ),
         BottomNavigationItem(
             titleResId = UiR.string.title_profile,
@@ -54,11 +52,10 @@ fun NavGraphBuilder.mainScreen(
             navigationItems = navigationItems,
             onError = onError,
             onSettingsButtonClicked = onSettingsButtonClicked,
-            onConversationItemClicked = onConversationClicked,
+            onNavigateToMessagesHistory = onNavigateToMessagesHistory,
             onPhotoClicked = onPhotoClicked,
             onMessageClicked = onMessageClicked,
-            onCreateChatClicked = onCreateChatClicked,
-            viewModel = viewModel
+            onNavigateToCreateChat = onNavigateToCreateChat
         )
     }
 }

app/src/main/kotlin/dev/meloda/fast/presentation/MainActivity.kt

@@ -38,6 +38,7 @@ import dev.meloda.fast.common.LongPollController
 import dev.meloda.fast.common.model.LongPollState
 import dev.meloda.fast.datastore.AppSettings
 import dev.meloda.fast.datastore.UserSettings
+import dev.meloda.fast.model.api.domain.VkUser
 import dev.meloda.fast.service.OnlineService
 import dev.meloda.fast.service.longpolling.LongPollingService
 import dev.meloda.fast.ui.model.DeviceSize
@@ -46,6 +47,7 @@ import dev.meloda.fast.ui.model.ThemeConfig
 import dev.meloda.fast.ui.theme.AppTheme
 import dev.meloda.fast.ui.theme.LocalSizeConfig
 import dev.meloda.fast.ui.theme.LocalThemeConfig
+import dev.meloda.fast.ui.theme.LocalUser
 import dev.meloda.fast.ui.util.isNeedToEnableDarkMode
 import org.koin.androidx.compose.koinViewModel
 import org.koin.compose.KoinContext
@@ -98,6 +100,8 @@ class MainActivity : AppCompatActivity() {
 
                 val viewModel: MainViewModel = koinViewModel<MainViewModelImpl>()
 
+                val currentUser: VkUser? by viewModel.currentUser.collectAsStateWithLifecycle()
+
                 LifecycleResumeEffect(true) {
                     viewModel.onAppResumed(intent)
                     onPauseOrDispose {}
@@ -133,7 +137,8 @@ class MainActivity : AppCompatActivity() {
                     }
                 }
 
-                LaunchedEffect(longPollStateToApply) {
+                LifecycleResumeEffect(longPollStateToApply) {
+                    Log.d("LongPollMainActivity", "longPollStateToApply: $longPollStateToApply")
                     if (longPollStateToApply != LongPollState.Background) {
                         if (longPollStateToApply.isLaunched() && longPollCurrentState.isLaunched()
                             && longPollCurrentState != longPollStateToApply
@@ -147,6 +152,8 @@ class MainActivity : AppCompatActivity() {
                             inBackground = longPollStateToApply == LongPollState.Background
                         )
                     }
+
+                    onPauseOrDispose {}
                 }
 
                 val sendOnline by userSettings.sendOnlineStatus.collectAsStateWithLifecycle()
@@ -202,6 +209,7 @@ class MainActivity : AppCompatActivity() {
                 val enableBlur by userSettings.useBlur.collectAsStateWithLifecycle()
                 val enableMultiline by userSettings.enableMultiline.collectAsStateWithLifecycle()
                 val useSystemFont by userSettings.useSystemFont.collectAsStateWithLifecycle()
+                val enableAnimations by userSettings.enableAnimations.collectAsStateWithLifecycle()
 
                 val setDarkMode = isNeedToEnableDarkMode(darkMode = darkMode)
 
@@ -214,7 +222,7 @@ class MainActivity : AppCompatActivity() {
                     setDarkMode,
                     useSystemFont
                 ) {
-                    mutableStateOf(
+                    derivedStateOf {
                         ThemeConfig(
                             darkMode = setDarkMode,
                             dynamicColors = dynamicColors,
@@ -222,14 +230,16 @@ class MainActivity : AppCompatActivity() {
                             amoledDark = amoledDark,
                             enableBlur = enableBlur,
                             enableMultiline = enableMultiline,
-                            useSystemFont = useSystemFont
+                            useSystemFont = useSystemFont,
+                            enableAnimations = enableAnimations
                         )
-                    )
+                    }
                 }
 
                 CompositionLocalProvider(
                     LocalThemeConfig provides themeConfig,
-                    LocalSizeConfig provides sizeConfig
+                    LocalSizeConfig provides sizeConfig,
+                    LocalUser provides currentUser
                 ) {
                     AppTheme(
                         useDarkTheme = themeConfig.darkMode,
@@ -292,12 +302,19 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private val longPollingServiceIntent by lazy {
+        Intent(this, LongPollingService::class.java)
+    }
+    private val onlineServiceIntent by lazy {
+        Intent(this, OnlineService::class.java)
+    }
+
     private fun toggleLongPollService(
         enable: Boolean,
         inBackground: Boolean = AppSettings.Experimental.longPollInBackground
     ) {
         if (enable) {
-            val longPollIntent = Intent(this, LongPollingService::class.java)
+            val longPollIntent = longPollingServiceIntent
 
             if (inBackground) {
                 ContextCompat.startForegroundService(this, longPollIntent)
@@ -305,15 +322,15 @@ class MainActivity : AppCompatActivity() {
                 startService(longPollIntent)
             }
         } else {
-            stopService(Intent(this, LongPollingService::class.java))
+            stopService(longPollingServiceIntent)
         }
     }
 
     private fun toggleOnlineService(enable: Boolean) {
         if (enable) {
-            startService(Intent(this, OnlineService::class.java))
+            startService(onlineServiceIntent)
         } else {
-            stopService(Intent(this, OnlineService::class.java))
+            stopService(onlineServiceIntent)
         }
     }
 

app/src/main/kotlin/dev/meloda/fast/presentation/MainScreen.kt

@@ -6,7 +6,6 @@ import androidx.compose.animation.fadeOut
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.material3.Icon
@@ -16,6 +15,7 @@ import androidx.compose.material3.NavigationBarItem
 import androidx.compose.material3.Scaffold
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
+import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
@@ -25,9 +25,9 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.unit.dp
-import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.navigation
 import androidx.navigation.compose.rememberNavController
@@ -36,8 +36,9 @@ import dev.chrisbanes.haze.HazeState
 import dev.chrisbanes.haze.hazeEffect
 import dev.chrisbanes.haze.materials.ExperimentalHazeMaterialsApi
 import dev.chrisbanes.haze.materials.HazeMaterials
-import dev.meloda.fast.MainViewModel
-import dev.meloda.fast.conversations.navigation.conversationsScreen
+import dev.meloda.fast.conversations.navigation.Conversations
+import dev.meloda.fast.conversations.navigation.conversationsGraph
+import dev.meloda.fast.friends.navigation.Friends
 import dev.meloda.fast.friends.navigation.friendsScreen
 import dev.meloda.fast.model.BaseError
 import dev.meloda.fast.model.BottomNavigationItem
@@ -45,7 +46,10 @@ import dev.meloda.fast.navigation.MainGraph
 import dev.meloda.fast.profile.navigation.profileScreen
 import dev.meloda.fast.ui.theme.LocalBottomPadding
 import dev.meloda.fast.ui.theme.LocalHazeState
+import dev.meloda.fast.ui.theme.LocalNavController
+import dev.meloda.fast.ui.theme.LocalReselectedTab
 import dev.meloda.fast.ui.theme.LocalThemeConfig
+import dev.meloda.fast.ui.theme.LocalUser
 import dev.meloda.fast.ui.util.ImmutableList
 
 @OptIn(ExperimentalHazeMaterialsApi::class)
@@ -54,38 +58,47 @@ fun MainScreen(
     navigationItems: ImmutableList<BottomNavigationItem>,
     onError: (BaseError) -> Unit = {},
     onSettingsButtonClicked: () -> Unit = {},
-    onConversationItemClicked: (conversationId: Int) -> Unit = {},
+    onNavigateToMessagesHistory: (conversationId: Long) -> Unit = {},
     onPhotoClicked: (url: String) -> Unit = {},
-    onMessageClicked: (userId: Int) -> Unit = {},
-    onCreateChatClicked: () -> Unit = {},
-    viewModel: MainViewModel
+    onMessageClicked: (userid: Long) -> Unit = {},
+    onNavigateToCreateChat: () -> Unit = {}
 ) {
-    val currentTheme = LocalThemeConfig.current
+    val theme = LocalThemeConfig.current
     val hazeState = remember { HazeState() }
     val navController = rememberNavController()
 
-    val profileImageUrl by viewModel.profileImageUrl.collectAsStateWithLifecycle()
-
     var selectedItemIndex by rememberSaveable {
         mutableIntStateOf(1)
     }
 
+    val user = LocalUser.current
+    val profileImageUrl by remember(user) {
+        derivedStateOf { user?.photo100 }
+    }
+
+    var tabReselected by remember {
+        mutableStateOf(
+            navigationItems.associate {
+                it.route to false
+            }
+        )
+    }
+
     Scaffold(
         bottomBar = {
             NavigationBar(
                 modifier = Modifier
+                    .fillMaxWidth()
                     .then(
-                        if (currentTheme.enableBlur) {
+                        if (theme.enableBlur) {
                             Modifier.hazeEffect(
                                 state = hazeState,
                                 style = HazeMaterials.thick()
                             )
                         } else Modifier
-                    )
-                    .fillMaxWidth(),
-                containerColor = NavigationBarDefaults.containerColor.copy(
-                    alpha = if (currentTheme.enableBlur) 0f else 1f
-                )
+                    ),
+                containerColor = if (theme.enableBlur) Color.Transparent
+                else NavigationBarDefaults.containerColor
             ) {
                 navigationItems.forEachIndexed { index, item ->
                     NavigationBarItem(
@@ -100,6 +113,10 @@ fun MainScreen(
                                         inclusive = true
                                     }
                                 }
+                            } else {
+                                tabReselected = tabReselected.toMutableMap().also {
+                                    it[navigationItems[index].route] = true
+                                }
                             }
                         },
                         icon = {
@@ -123,9 +140,7 @@ fun MainScreen(
                                         .size(24.dp)
                                         .clip(CircleShape)
                                         .alpha(if (isLoading) 0f else 1f),
-                                    onSuccess = {
-                                        isLoading = false
-                                    }
+                                    onSuccess = { isLoading = false }
                                 )
                             } else {
                                 Icon(
@@ -146,11 +161,12 @@ fun MainScreen(
         Box(
             modifier = Modifier
                 .fillMaxSize()
-                .padding(bottom = if (currentTheme.enableBlur) 0.dp else padding.calculateBottomPadding())
         ) {
             CompositionLocalProvider(
                 LocalHazeState provides hazeState,
-                LocalBottomPadding provides if (currentTheme.enableBlur) padding.calculateBottomPadding() else 0.dp
+                LocalBottomPadding provides padding.calculateBottomPadding(),
+                LocalReselectedTab provides tabReselected,
+                LocalNavController provides navController
             ) {
                 NavHost(
                     navController = navController,
@@ -165,22 +181,28 @@ fun MainScreen(
                     ) {
                         friendsScreen(
                             onError = onError,
-                            navController = navController,
                             onPhotoClicked = onPhotoClicked,
-                            onMessageClicked = onMessageClicked
+                            onMessageClicked = onMessageClicked,
+                            onScrolledToTop = {
+                                tabReselected = tabReselected.toMutableMap().also {
+                                    it[Friends] = false
+                                }
+                            },
                         )
-                        conversationsScreen(
+                        conversationsGraph(
                             onError = onError,
-                            onConversationItemClicked = onConversationItemClicked,
-                            onPhotoClicked = onPhotoClicked,
-                            onCreateChatClicked = onCreateChatClicked,
-                            navController = navController,
+                            onNavigateToMessagesHistory = onNavigateToMessagesHistory,
+                            onNavigateToCreateChat = onNavigateToCreateChat,
+                            onScrolledToTop = {
+                                tabReselected = tabReselected.toMutableMap().also {
+                                    it[Conversations] = false
+                                }
+                            }
                         )
                         profileScreen(
                             onError = onError,
                             onSettingsButtonClicked = onSettingsButtonClicked,
-                            onPhotoClicked = onPhotoClicked,
-                            navController = navController
+                            onPhotoClicked = onPhotoClicked
                         )
                     }
                 }

app/src/main/kotlin/dev/meloda/fast/presentation/RootScreen.kt

@@ -10,6 +10,7 @@ import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.platform.LocalContext
@@ -38,6 +39,8 @@ import dev.meloda.fast.photoviewer.navigation.photoViewScreen
 import dev.meloda.fast.settings.navigation.navigateToSettings
 import dev.meloda.fast.settings.navigation.settingsScreen
 import dev.meloda.fast.ui.R
+import dev.meloda.fast.ui.theme.LocalNavController
+import dev.meloda.fast.ui.theme.LocalNavRootController
 
 @Composable
 fun RootScreen(
@@ -111,51 +114,59 @@ fun RootScreen(
     }
 
     if (startDestination != null) {
-        NavHost(
-            navController = navController,
-            startDestination = requireNotNull(startDestination),
-            enterTransition = { fadeIn(animationSpec = tween(200)) },
-            exitTransition = { fadeOut(animationSpec = tween(200)) }
+        CompositionLocalProvider(
+            LocalNavRootController provides navController,
+            LocalNavController provides navController
         ) {
-            authNavGraph(
-                onNavigateToMain = navController::navigateToMain,
-                navController = navController
-            )
-            mainScreen(
-                onError = viewModel::onError,
-                onSettingsButtonClicked = navController::navigateToSettings,
-                onConversationClicked = navController::navigateToMessagesHistory,
-                onPhotoClicked = { url -> navController.navigateToPhotoView(listOf(url)) },
-                onMessageClicked = navController::navigateToMessagesHistory,
-                onCreateChatClicked = navController::navigateToCreateChat,
-                viewModel = viewModel
-            )
+            NavHost(
+                navController = navController,
+                startDestination = requireNotNull(startDestination),
+                enterTransition = { fadeIn(animationSpec = tween(200)) },
+                exitTransition = { fadeOut(animationSpec = tween(200)) }
+            ) {
+                authNavGraph(
+                    onNavigateToMain = {
+                        viewModel.onUserAuthenticated()
+                        navController.navigateToMain()
+                    },
+                    navController = navController
+                )
 
-            messagesHistoryScreen(
-                onError = viewModel::onError,
-                onBack = navController::navigateUp,
-                onChatMaterialsDropdownItemClicked = navController::navigateToChatMaterials
-            )
-            chatMaterialsScreen(
-                onBack = navController::navigateUp,
-                onPhotoClicked = { url -> navController.navigateToPhotoView(listOf(url)) }
-            )
-            createChatScreen(
-                onChatCreated = { conversationId ->
-                    navController.popBackStack()
-                    navController.navigateToMessagesHistory(conversationId)
-                },
-                navController = navController
-            )
+                mainScreen(
+                    onError = viewModel::onError,
+                    onSettingsButtonClicked = navController::navigateToSettings,
+                    onNavigateToMessagesHistory = navController::navigateToMessagesHistory,
+                    onPhotoClicked = { url -> navController.navigateToPhotoView(listOf(url)) },
+                    onMessageClicked = navController::navigateToMessagesHistory,
+                    onNavigateToCreateChat = navController::navigateToCreateChat
+                )
 
-            settingsScreen(
-                onBack = navController::navigateUp,
-                onLogOutButtonClicked = { navController.navigateToAuth(true) },
-                onLanguageItemClicked = navController::navigateToLanguagePicker
-            )
-            languagePickerScreen(onBack = navController::navigateUp)
+                messagesHistoryScreen(
+                    onError = viewModel::onError,
+                    onBack = navController::navigateUp,
+                    onNavigateToChatMaterials = navController::navigateToChatMaterials
+                )
+                chatMaterialsScreen(
+                    onBack = navController::navigateUp,
+                    onPhotoClicked = { url -> navController.navigateToPhotoView(listOf(url)) }
+                )
+                createChatScreen(
+                    onChatCreated = { conversationId ->
+                        navController.popBackStack()
+                        navController.navigateToMessagesHistory(conversationId)
+                    },
+                    navController = navController
+                )
 
-            photoViewScreen(onBack = navController::navigateUp)
+                settingsScreen(
+                    onBack = navController::navigateUp,
+                    onLogOutButtonClicked = { navController.navigateToAuth(true) },
+                    onLanguageItemClicked = navController::navigateToLanguagePicker
+                )
+                languagePickerScreen(onBack = navController::navigateUp)
+
+                photoViewScreen(onBack = navController::navigateUp)
+            }
         }
     }
 }

app/src/main/kotlin/dev/meloda/fast/service/longpolling/LongPollingService.kt

@@ -30,11 +30,13 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import org.koin.android.ext.android.inject
 import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.resume
 import kotlin.coroutines.suspendCoroutine
+import kotlin.time.Duration.Companion.seconds
 
 class LongPollingService : Service() {
 
@@ -42,17 +44,11 @@ class LongPollingService : Service() {
 
     private val job = SupervisorJob()
 
-    private val exceptionHandler = CoroutineExceptionHandler { _, throwable ->
-        Log.e(TAG, "error: $throwable")
-
-        if (throwable !is NoAccessTokenException) {
-            throwable.printStackTrace()
+    private val exceptionHandler =
+        CoroutineExceptionHandler { _, throwable ->
+            handleError(throwable)
         }
 
-        longPollController.updateCurrentState(LongPollState.Exception)
-        longPollController.setStateToApply(LongPollState.Exception)
-    }
-
     private val coroutineContext: CoroutineContext
         get() = Dispatchers.IO + job + exceptionHandler
 
@@ -63,6 +59,8 @@ class LongPollingService : Service() {
 
     private var currentJob: Job? = null
 
+    private val inBackground get() = AppSettings.Experimental.longPollInBackground
+
     override fun onCreate() {
         super.onCreate()
         Log.d(STATE_TAG, "onCreate()")
@@ -76,21 +74,12 @@ class LongPollingService : Service() {
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
         if (startId > 1) return START_STICKY
 
-        val inBackground = AppSettings.Experimental.longPollInBackground
-
         Log.d(
             STATE_TAG,
             "onStartCommand: asForeground: $inBackground; flags: $flags; startId: $startId;\ninstance: $this"
         )
 
-        if (currentJob != null) {
-            currentJob?.cancel()
-            currentJob = null
-        }
-
-        coroutineScope.launch {
-            currentJob = startPolling().also { it.join() }
-        }
+        startJob()
 
         val openCategorySettingsIntent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS)
@@ -108,11 +97,6 @@ class LongPollingService : Service() {
             PendingIntent.FLAG_IMMUTABLE
         )
 
-        longPollController.updateCurrentState(
-            if (inBackground) LongPollState.Background
-            else LongPollState.InApp
-        )
-
         if (inBackground) {
             val notification =
                 NotificationsUtils.createNotification(
@@ -134,17 +118,33 @@ class LongPollingService : Service() {
         return START_STICKY
     }
 
+    private fun startJob() {
+        if (currentJob != null) {
+            currentJob?.cancel()
+            currentJob = null
+        }
+
+        coroutineScope.launch {
+            currentJob = startPolling().also { it.join() }
+        }
+    }
+
     private fun startPolling(): Job {
         if (job.isCompleted || job.isCancelled) {
-            Log.d(STATE_TAG, "job is completed or cancelled")
+            Log.d(STATE_TAG, "Job is completed or cancelled")
             throw Exception("Job is over")
         }
 
-        Log.d(STATE_TAG, "job started")
+        Log.d(STATE_TAG, "Starting job...")
+
+        return coroutineScope.launch(coroutineContext) {
+            longPollController.updateCurrentState(
+                if (inBackground) LongPollState.Background
+                else LongPollState.InApp
+            )
 
-        return coroutineScope.launch {
             if (UserConfig.accessToken.isEmpty()) {
-                throw NoAccessTokenException
+                throw NoAccessTokenException()
             }
 
             var serverInfo = getServerInfo()
@@ -246,10 +246,24 @@ class LongPollingService : Service() {
         }
     }
 
+    private fun handleError(throwable: Throwable) {
+        Log.e(TAG, "error: $throwable")
+
+        if (throwable !is NoAccessTokenException) {
+            throwable.printStackTrace()
+        }
+
+        coroutineScope.launch {
+            delay(5.seconds)
+            startJob()
+        }
+
+        longPollController.updateCurrentState(LongPollState.Exception)
+    }
+
     override fun onDestroy() {
         Log.d(STATE_TAG, "onDestroy")
         longPollController.updateCurrentState(LongPollState.Stopped)
-        updatesParser.clearListeners()
         try {
             AppSettings.edit { putBoolean(KEY_LONG_POLL_WAS_DESTROYED, true) }
             job.cancel()
@@ -276,4 +290,4 @@ class LongPollingService : Service() {
 }
 
 private data class LongPollException(override val message: String) : Throwable()
-private data object NoAccessTokenException : Throwable()
+private class NoAccessTokenException : Throwable()