refactor: simplify app bootstrap and root errors

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

@@ -2,7 +2,6 @@ package dev.meloda.fast
 
 import android.content.Intent
 import android.os.Build
-import android.util.Log
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.app.NotificationCompat
 import androidx.core.os.LocaleListCompat
@@ -38,6 +37,7 @@ interface MainViewModel {
     val startDestination: StateFlow<Any?>
     val isNeedToReplaceWithAuth: StateFlow<Boolean>
     val currentUser: StateFlow<VkUser?>
+    val baseError: StateFlow<BaseError?>
 
     val isNeedToShowNotificationsDeniedDialog: StateFlow<Boolean>
     val isNeedToShowNotificationsRationaleDialog: StateFlow<Boolean>
@@ -45,6 +45,7 @@ interface MainViewModel {
     val isNeedToRequestNotifications: StateFlow<Boolean>
 
     fun onError(error: BaseError)
+    fun onErrorConsumed()
 
     fun onNavigatedToAuth()
 
@@ -73,6 +74,7 @@ class MainViewModelImpl(
     override val startDestination = MutableStateFlow<Any?>(null)
     override val isNeedToReplaceWithAuth = MutableStateFlow(false)
     override val currentUser = MutableStateFlow<VkUser?>(null)
+    override val baseError = MutableStateFlow<BaseError?>(null)
 
     override val isNeedToShowNotificationsDeniedDialog = MutableStateFlow(false)
     override val isNeedToShowNotificationsRationaleDialog = MutableStateFlow(false)
@@ -93,10 +95,16 @@ class MainViewModelImpl(
                 isNeedToReplaceWithAuth.update { true }
             }
 
-            else -> Unit // TODO: 21-Mar-25, Danil Nikolaev: show error in ui
+            else -> {
+                baseError.update { error }
+            }
         }
     }
 
+    override fun onErrorConsumed() {
+        baseError.update { null }
+    }
+
     override fun onNavigatedToAuth() {
         isNeedToReplaceWithAuth.update { false }
     }
@@ -207,8 +215,6 @@ class MainViewModelImpl(
         viewModelScope.launch(Dispatchers.IO) {
             val currentAccount = getCurrentAccountUseCase()
 
-            Log.d("MainViewModel", "currentAccount: $currentAccount")
-
             if (currentAccount != null) {
                 UserConfig.apply {
                     this.userId = currentAccount.userId

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

@@ -9,7 +9,6 @@ import android.content.res.Configuration
 import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
-import android.util.Log
 import androidx.activity.SystemBarStyle
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
@@ -65,9 +64,6 @@ class MainActivity : AppCompatActivity() {
 
         setContent {
             val viewModel: MainViewModel = koinViewModel<MainViewModelImpl>()
-            LaunchedEffect(viewModel) {
-                Log.d("VM_CREATE", "onCreate: viewModel: $viewModel")
-            }
 
             LifecycleResumeEffect(true) {
                 viewModel.onAppResumed(intent)

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

@@ -0,0 +1,38 @@
+package dev.meloda.fast.presentation
+
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.res.stringResource
+import dev.meloda.fast.model.BaseError
+import dev.meloda.fast.ui.R
+
+@Composable
+fun RootErrorDialog(
+    baseError: BaseError?,
+    onDismiss: () -> Unit,
+    onConfirm: () -> Unit,
+) {
+    if (baseError == null) return
+
+    val errorText = when (baseError) {
+        BaseError.ConnectionError -> "Connection error"
+        BaseError.InternalError -> "Internal error"
+        BaseError.UnknownError -> "Unknown error"
+        is BaseError.SimpleError -> baseError.message
+        BaseError.SessionExpired -> "Session expired"
+        BaseError.AccountBlocked -> "Account blocked"
+    }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(text = stringResource(id = R.string.warning)) },
+        text = { Text(text = errorText) },
+        confirmButton = {
+            TextButton(onClick = onConfirm) {
+                Text(text = stringResource(id = R.string.try_again))
+            }
+        }
+    )
+}

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

@@ -4,16 +4,12 @@ import android.Manifest
 import android.content.Intent
 import android.net.Uri
 import android.provider.Settings
-import android.util.Log
 import androidx.activity.compose.LocalActivity
 import androidx.compose.animation.core.tween
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
-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
@@ -91,10 +87,7 @@ fun RootScreen(
     val longPollCurrentState by longPollController.currentState.collectAsStateWithLifecycle()
     val longPollStateToApply by longPollController.stateToApply.collectAsStateWithLifecycle()
 
-    val viewModel: MainViewModel = koinViewModel<MainViewModelImpl>()
-    LaunchedEffect(viewModel) {
-        Log.d("VM_CREATE", "RootScreen(): viewModel: $viewModel")
-    }
+            val viewModel: MainViewModel = koinViewModel<MainViewModelImpl>()
 
     val currentUser: VkUser? by viewModel.currentUser.collectAsStateWithLifecycle()
 
@@ -125,14 +118,12 @@ fun RootScreen(
         }
     }
 
-    LifecycleResumeEffect(longPollStateToApply) {
-        Log.d("LongPollMainActivity", "longPollStateToApply: $longPollStateToApply")
+        LifecycleResumeEffect(longPollStateToApply) {
         if (longPollStateToApply != LongPollState.Background) {
             if (longPollStateToApply.isLaunched() && longPollCurrentState.isLaunched()
                 && longPollCurrentState != longPollStateToApply
             ) {
                 toggleLongPollService(false, null)
-                Log.d("LongPoll", "recreate()")
             }
 
             toggleLongPollService(
@@ -241,6 +232,7 @@ fun RootScreen(
             val context = LocalContext.current
             val startDestination by viewModel.startDestination.collectAsStateWithLifecycle()
             val isNeedToOpenAuth by viewModel.isNeedToReplaceWithAuth.collectAsStateWithLifecycle()
+            val baseError by viewModel.baseError.collectAsStateWithLifecycle()
             val isNeedToShowDeniedDialog by viewModel.isNeedToShowNotificationsDeniedDialog.collectAsStateWithLifecycle()
             val isNeedToShowRationaleDialog by viewModel.isNeedToShowNotificationsRationaleDialog.collectAsStateWithLifecycle()
 
@@ -304,6 +296,12 @@ fun RootScreen(
                 )
             }
 
+            RootErrorDialog(
+                baseError = baseError,
+                onDismiss = viewModel::onErrorConsumed,
+                onConfirm = viewModel::onErrorConsumed
+            )
+
             if (startDestination != null) {
                 CompositionLocalProvider(
                     LocalNavRootController provides navController,

build-logic/convention/src/main/kotlin/dev/meloda/fast/KotlinAndroid.kt

@@ -25,6 +25,7 @@ internal fun Project.configureKotlinAndroid(
 
     commonExtension.apply {
         compileSdk = getVersionInt("compileSdk")
+        buildToolsVersion = "36.1.0"
     }
 
     configureKotlin<KotlinAndroidProjectExtension>()