Add snackbar controller

app/src/main/java/com/infinitepower/newquiz/ui/navigation/CompactNavigationContainer.kt

@@ -14,6 +14,8 @@ import androidx.compose.material3.ModalNavigationDrawer
 import androidx.compose.material3.NavigationBar
 import androidx.compose.material3.NavigationBarItem
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBarDefaults
@@ -47,6 +49,7 @@ internal fun CompactContainer(
     selectedItem: NavigationItem.Item?,
     userDiamonds: UInt = 0u,
     drawerState: DrawerState = rememberDrawerState(DrawerValue.Closed),
+    snackbarHostState: SnackbarHostState,
     content: @Composable (PaddingValues) -> Unit
 ) {
     val scope = rememberCoroutineScope()
@@ -76,6 +79,9 @@ internal fun CompactContainer(
     ) {
         Scaffold(
             modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+            snackbarHost = {
+                SnackbarHost(hostState = snackbarHostState)
+            },
             topBar = {
                 CenterAlignedTopAppBar(
                     title = {
@@ -168,7 +174,8 @@ private fun CompactContainerPreview() {
                 primaryItems = getPrimaryItems(),
                 otherItems = otherItems,
                 selectedItem = selectedItem,
-                userDiamonds = 100u
+                userDiamonds = 100u,
+                snackbarHostState = SnackbarHostState()
             )
         }
     }

app/src/main/java/com/infinitepower/newquiz/ui/navigation/ExpandedNavigationContainer.kt

@@ -7,6 +7,8 @@ import androidx.compose.material3.CenterAlignedTopAppBar
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.PermanentNavigationDrawer
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBarDefaults
@@ -37,6 +39,7 @@ internal fun ExpandedContainer(
     otherItems: ImmutableList<NavigationItem>,
     selectedItem: NavigationItem.Item?,
     userDiamonds: UInt = 0u,
+    snackbarHostState: SnackbarHostState,
     content: @Composable (PaddingValues) -> Unit
 ) {
     val scrollBehavior = TopAppBarDefaults.pinnedScrollBehavior(
@@ -66,6 +69,9 @@ internal fun ExpandedContainer(
     ) {
         Scaffold(
             modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+            snackbarHost = {
+                SnackbarHost(hostState = snackbarHostState)
+            },
             topBar = {
                 CenterAlignedTopAppBar(
                     title = {
@@ -115,7 +121,8 @@ private fun MediumContainerPreview() {
                 primaryItems = getPrimaryItems(),
                 otherItems = otherItems,
                 selectedItem = selectedItem,
-                userDiamonds = 100u
+                userDiamonds = 100u,
+                snackbarHostState = SnackbarHostState()
             )
         }
     }

app/src/main/java/com/infinitepower/newquiz/ui/navigation/MediumNavigationContainer.kt

@@ -16,6 +16,8 @@ import androidx.compose.material3.ModalNavigationDrawer
 import androidx.compose.material3.NavigationRail
 import androidx.compose.material3.NavigationRailItem
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.material3.TopAppBarDefaults
@@ -48,6 +50,7 @@ internal fun MediumContainer(
     selectedItem: NavigationItem.Item?,
     userDiamonds: UInt = 0u,
     drawerState: DrawerState = rememberDrawerState(DrawerValue.Closed),
+    snackbarHostState: SnackbarHostState,
     content: @Composable (PaddingValues) -> Unit
 ) {
     val scope = rememberCoroutineScope()
@@ -106,6 +109,9 @@ internal fun MediumContainer(
 
             Scaffold(
                 modifier = Modifier.nestedScroll(scrollBehavior.nestedScrollConnection),
+                snackbarHost = {
+                    SnackbarHost(hostState = snackbarHostState)
+                },
                 topBar = {
                     CenterAlignedTopAppBar(
                         scrollBehavior = scrollBehavior,
@@ -156,6 +162,7 @@ private fun MediumContainerPreview() {
                 primaryItems = getPrimaryItems(),
                 otherItems = otherItems,
                 selectedItem = selectedItem,
+                snackbarHostState = SnackbarHostState()
             )
         }
     }

app/src/main/java/com/infinitepower/newquiz/ui/navigation/NavigationContainer.kt

@@ -14,26 +14,33 @@ import androidx.compose.material.icons.rounded.Today
 import androidx.compose.material.icons.rounded.ViewModule
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarHost
+import androidx.compose.material3.SnackbarHostState
+import androidx.compose.material3.SnackbarResult
 import androidx.compose.material3.windowsizeclass.WindowWidthSizeClass
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.navigation.NavController
 import com.infinitepower.newquiz.comparison_quiz.destinations.ComparisonQuizListScreenDestination
 import com.infinitepower.newquiz.core.R
 import com.infinitepower.newquiz.core.navigation.NavDrawerBadgeItem
 import com.infinitepower.newquiz.core.navigation.NavigationItem
 import com.infinitepower.newquiz.core.navigation.ScreenType
+import com.infinitepower.newquiz.core.ui.ObserveAsEvents
+import com.infinitepower.newquiz.core.ui.SnackbarController
 import com.infinitepower.newquiz.feature.daily_challenge.destinations.DailyChallengeScreenDestination
-import com.infinitepower.newquiz.feature.settings.destinations.SettingsScreenDestination
 import com.infinitepower.newquiz.feature.maze.destinations.MazeScreenDestination
 import com.infinitepower.newquiz.feature.profile.destinations.ProfileScreenDestination
+import com.infinitepower.newquiz.feature.settings.destinations.SettingsScreenDestination
 import com.infinitepower.newquiz.multi_choice_quiz.destinations.MultiChoiceQuizListScreenDestination
 import com.infinitepower.newquiz.wordle.destinations.WordleListScreenDestination
 import com.ramcosta.composedestinations.spec.DestinationSpec
 import com.ramcosta.composedestinations.utils.currentDestinationAsState
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
+import kotlinx.coroutines.launch
 
 internal fun getPrimaryItems(): ImmutableList<NavigationItem.Item> = persistentListOf(
     NavigationItem.Item(
@@ -108,6 +115,8 @@ internal fun NavigationContainer(
     userDiamonds: UInt,
     content: @Composable (PaddingValues) -> Unit
 ) {
+    val scope = rememberCoroutineScope()
+
     val destination by navController.currentDestinationAsState()
 
     val primaryItems = remember { getPrimaryItems() }
@@ -125,6 +134,24 @@ internal fun NavigationContainer(
         selectedItem != null && selectedItem.screenType == ScreenType.NORMAL
     }
 
+    val snackbarHostState = remember { SnackbarHostState() }
+    ObserveAsEvents(flow = SnackbarController.events, snackbarHostState) { event ->
+        scope.launch {
+            snackbarHostState.currentSnackbarData?.dismiss()
+
+            val result = snackbarHostState.showSnackbar(
+                message = event.message,
+                actionLabel = event.action?.name,
+                withDismissAction = event.withDismissAction,
+                duration = event.duration
+            )
+
+            if (result == SnackbarResult.ActionPerformed) {
+                event.action?.action?.invoke()
+            }
+        }
+    }
+
     if (navigationVisible) {
         when (windowWidthSize) {
             WindowWidthSizeClass.Compact -> CompactContainer(
@@ -133,6 +160,7 @@ internal fun NavigationContainer(
                 otherItems = otherItems,
                 selectedItem = selectedItem,
                 userDiamonds = userDiamonds,
+                snackbarHostState = snackbarHostState,
                 content = content
             )
 
@@ -142,6 +170,7 @@ internal fun NavigationContainer(
                 otherItems = otherItems,
                 selectedItem = selectedItem,
                 userDiamonds = userDiamonds,
+                snackbarHostState = snackbarHostState,
                 content = content
             )
 
@@ -151,12 +180,16 @@ internal fun NavigationContainer(
                 otherItems = otherItems,
                 selectedItem = selectedItem,
                 userDiamonds = userDiamonds,
+                snackbarHostState = snackbarHostState,
                 content = content
             )
         }
     } else {
         Scaffold(
-            content = content
+            content = content,
+            snackbarHost = {
+                SnackbarHost(hostState = snackbarHostState)
+            }
         )
     }
 }

comparison-quiz/src/main/java/com/infinitepower/newquiz/comparison_quiz/ui/ComparisonQuizViewModel.kt

@@ -7,6 +7,8 @@ import androidx.lifecycle.viewModelScope
 import androidx.work.WorkManager
 import com.infinitepower.newquiz.comparison_quiz.core.workers.ComparisonQuizEndGameWorker
 import com.infinitepower.newquiz.core.game.ComparisonQuizCore
+import com.infinitepower.newquiz.core.ui.SnackbarController
+import com.infinitepower.newquiz.core.ui.SnackbarEvent
 import com.infinitepower.newquiz.core.user_services.InsufficientDiamondsException
 import com.infinitepower.newquiz.core.user_services.UserService
 import com.infinitepower.newquiz.data.worker.UpdateGlobalEventDataWorker
@@ -130,6 +132,7 @@ class ComparisonQuizViewModel @Inject constructor(
                     comparisonQuizCore.onAnswerClicked(event.item)
                 }
             }
+
             is ComparisonQuizUiEvent.ShowSkipQuestionDialog -> getUserDiamonds()
             is ComparisonQuizUiEvent.DismissSkipQuestionDialog -> {
                 _uiState.update { currentState ->
@@ -139,13 +142,16 @@ class ComparisonQuizViewModel @Inject constructor(
                     )
                 }
             }
+
             is ComparisonQuizUiEvent.SkipQuestion -> {
                 viewModelScope.launch {
                     try {
                         comparisonQuizCore.skip()
                     } catch (e: InsufficientDiamondsException) {
                         e.printStackTrace()
-                        // TODO: Show error dialog
+                        SnackbarController.sendEvent(
+                            event = SnackbarEvent(message = "Insufficient diamonds")
+                        )
                     }
                 }
             }

core/src/main/java/com/infinitepower/newquiz/core/ui/ObserveAsEvents.kt

@@ -0,0 +1,27 @@
+package com.infinitepower.newquiz.core.ui
+
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.compose.LocalLifecycleOwner
+import androidx.lifecycle.repeatOnLifecycle
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.withContext
+
+@Composable
+fun <T> ObserveAsEvents(
+    flow: Flow<T>,
+    vararg keys: Any?,
+    onEvent: (T) -> Unit
+) {
+    val lifecycleOwner = LocalLifecycleOwner.current
+
+    LaunchedEffect(lifecycleOwner.lifecycle, *keys, flow) {
+        lifecycleOwner.repeatOnLifecycle(Lifecycle.State.STARTED) {
+            withContext(Dispatchers.Main.immediate) {
+                flow.collect(onEvent)
+            }
+        }
+    }
+}

core/src/main/java/com/infinitepower/newquiz/core/ui/SnackbarController.kt

@@ -0,0 +1,26 @@
+package com.infinitepower.newquiz.core.ui
+
+import androidx.compose.material3.SnackbarDuration
+import kotlinx.coroutines.channels.Channel
+import kotlinx.coroutines.flow.receiveAsFlow
+
+object SnackbarController {
+    private val _events = Channel<SnackbarEvent>()
+    val events = _events.receiveAsFlow()
+
+    suspend fun sendEvent(event: SnackbarEvent) {
+        _events.send(event)
+    }
+}
+
+data class SnackbarEvent(
+    val message: String,
+    val action: SnackbarAction? = null,
+    val withDismissAction: Boolean = false,
+    val duration: SnackbarDuration = if (action == null) SnackbarDuration.Short else SnackbarDuration.Indefinite
+)
+
+data class SnackbarAction(
+    val name: String,
+    val action: () -> Unit
+)

multi-choice-quiz/src/main/java/com/infinitepower/newquiz/multi_choice_quiz/saved_questions/SavedMultiChoiceQuestionsViewModel.kt

@@ -9,6 +9,8 @@ import androidx.work.WorkInfo
 import androidx.work.WorkManager
 import com.infinitepower.newquiz.core.analytics.AnalyticsEvent
 import com.infinitepower.newquiz.core.analytics.AnalyticsHelper
+import com.infinitepower.newquiz.core.ui.SnackbarController
+import com.infinitepower.newquiz.core.ui.SnackbarEvent
 import com.infinitepower.newquiz.data.worker.multichoicequiz.DownloadMultiChoiceQuestionsWorker
 import com.infinitepower.newquiz.domain.repository.multi_choice_quiz.saved_questions.SavedMultiChoiceQuestionsRepository
 import com.infinitepower.newquiz.model.multi_choice_quiz.MultiChoiceQuestion
@@ -108,6 +110,12 @@ class SavedMultiChoiceQuestionsViewModel @Inject constructor(
         workManager
             .getWorkInfoByIdFlow(downloadQuestionsRequest.id)
             .onEach { info ->
+                if (info.state == WorkInfo.State.SUCCEEDED) {
+                    SnackbarController.sendEvent(
+                        event = SnackbarEvent(message = "Downloaded successfully")
+                    )
+                }
+
                 _uiState.update {
                     it.copy(
                         downloadingQuestions = info.state == WorkInfo.State.RUNNING