Implement proper storage for notification settings

Author: zsmb13

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/App.kt

@@ -19,6 +19,7 @@ import org.jetbrains.kotlinconf.screens.PrivacyPolicyViewModel
 import org.jetbrains.kotlinconf.screens.ScheduleViewModel
 import org.jetbrains.kotlinconf.screens.SessionViewModel
 import org.jetbrains.kotlinconf.screens.SettingsViewModel
+import org.jetbrains.kotlinconf.screens.StartNotificationsViewModel
 import org.jetbrains.kotlinconf.storage.ApplicationStorage
 import org.jetbrains.kotlinconf.storage.MultiplatformSettingsStorage
 import org.jetbrains.kotlinconf.ui.theme.KotlinConfTheme
@@ -77,6 +78,7 @@ private fun koinConfiguration(context: ApplicationContext) = koinConfiguration {
         viewModelOf(::SessionViewModel)
         viewModelOf(::SettingsViewModel)
         viewModelOf(::NewsListViewModel)
+        viewModelOf(::StartNotificationsViewModel)
         viewModelOf(::NewsDetailViewModel)
     }
 

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/ConferenceService.kt

@@ -142,10 +142,19 @@ class ConferenceService(
     fun requestNotificationPermissions() {
         scope.launch {
             storage.setNotificationsAllowed(true)
+            storage.setNotificationSettings(NotificationSettings())  // Set default values (all true)
             notificationManager.requestPermission()
         }
     }
 
+    fun getNotificationSettings(): Flow<NotificationSettings> = storage.getNotificationSettings()
+
+    fun setNotificationSettings(settings: NotificationSettings) {
+        scope.launch {
+            storage.setNotificationSettings(settings)
+        }
+    }
+
     /**
      * Vote for session.
      */

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/Model.kt

@@ -1,8 +1,9 @@
 package org.jetbrains.kotlinconf
 
-import io.ktor.util.date.*
-import kotlinx.serialization.*
-import org.jetbrains.kotlinconf.utils.*
+import io.ktor.util.date.GMTDate
+import kotlinx.serialization.Serializable
+import org.jetbrains.kotlinconf.utils.GMTDateSerializer
+import org.jetbrains.kotlinconf.utils.time
 import kotlin.jvm.JvmInline
 
 typealias GMTDateSerializable = @Serializable(GMTDateSerializer::class) GMTDate
@@ -97,8 +98,9 @@ class NewsItem(
     val content: String,
 )
 
+@Serializable
 data class NotificationSettings(
-    val scheduleUpdates: Boolean,
-    val kotlinConfNews: Boolean,
-    val jetbrainsNews: Boolean,
+    val scheduleUpdates: Boolean = true,
+    val kotlinConfNews: Boolean = true,
+    val jetbrainsNews: Boolean = true,
 )

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/screens/SettingsScreen.kt

@@ -84,6 +84,7 @@ fun SettingsScreen(
                 viewModel.setTheme(theme)
             },
             onNotificationSettingsChange = onNotificationSettingsChange,
+            viewModel = viewModel,
             modifier = Modifier
                 .drawWithContent {
                     graphicsLayer.record {
@@ -114,6 +115,7 @@ private fun SettingsScreenImpl(
     currentTheme: Theme,
     onThemeChange: (Theme) -> Unit,
     onNotificationSettingsChange: (NotificationSettings) -> Unit,
+    viewModel: SettingsViewModel,
     modifier: Modifier = Modifier,
 ) {
     ScreenWithTitle(
@@ -140,12 +142,11 @@ private fun SettingsScreenImpl(
 
             Divider(thickness = 1.dp, color = KotlinConfTheme.colors.strokePale)
 
-            // TODO populate with real values https://github.com/JetBrains/kotlinconf-app/issues/252
-            var notificationSettings by remember { mutableStateOf(NotificationSettings(false, false, false)) }
+            val notificationSettings by viewModel.notificationSettings.collectAsStateWithLifecycle()
             NotificationSettings(
                 notificationSettings = notificationSettings,
                 onChangeSettings = { newSettings ->
-                    notificationSettings = newSettings
+                    viewModel.setNotificationSettings(newSettings)
                     onNotificationSettingsChange(newSettings)
                 }
             )

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/screens/SettingsViewModel.kt

@@ -6,6 +6,7 @@ import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.flow.stateIn
 import org.jetbrains.kotlinconf.ConferenceService
+import org.jetbrains.kotlinconf.NotificationSettings
 import org.jetbrains.kotlinconf.Theme
 
 class SettingsViewModel(
@@ -14,7 +15,14 @@ class SettingsViewModel(
     val theme: StateFlow<Theme> = service.getTheme()
         .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), Theme.SYSTEM)
 
+    val notificationSettings: StateFlow<NotificationSettings> = service.getNotificationSettings()
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), NotificationSettings())
+
     fun setTheme(theme: Theme) {
         service.setTheme(theme)
     }
+
+    fun setNotificationSettings(settings: NotificationSettings) {
+        service.setNotificationSettings(settings)
+    }
 }

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/screens/StartNotificationsScreen.kt

@@ -13,11 +13,9 @@ import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import kotlinconfapp.shared.generated.resources.kodee_notifications
 import kotlinconfapp.shared.generated.resources.notifications_description
 import kotlinconfapp.shared.generated.resources.notifications_lets_get_started
@@ -28,14 +26,15 @@ import org.jetbrains.kotlinconf.NotificationSettings
 import org.jetbrains.kotlinconf.ui.components.Button
 import org.jetbrains.kotlinconf.ui.components.StyledText
 import org.jetbrains.kotlinconf.ui.theme.KotlinConfTheme
+import org.koin.compose.viewmodel.koinViewModel
 import kotlinconfapp.shared.generated.resources.Res as AppRes
 
 @Composable
 fun StartNotificationsScreen(
     onDone: (NotificationSettings) -> Unit,
+    viewModel: StartNotificationsViewModel = koinViewModel(),
 ) {
-    // TODO populate with real values https://github.com/JetBrains/kotlinconf-app/issues/252
-    var notificationSettings by remember { mutableStateOf(NotificationSettings(false, false, false)) }
+    val notificationSettings by viewModel.notificationSettings.collectAsStateWithLifecycle()
 
     Column(modifier = Modifier.fillMaxSize()) {
         Column(
@@ -59,7 +58,10 @@ fun StartNotificationsScreen(
                 stringResource(AppRes.string.notifications_description),
                 color = KotlinConfTheme.colors.longText,
             )
-            NotificationSettings(notificationSettings, { notificationSettings = it })
+            NotificationSettings(
+                notificationSettings = notificationSettings,
+                onChangeSettings = { viewModel.setNotificationSettings(it) }
+            )
         }
 
         Row(
@@ -68,7 +70,10 @@ fun StartNotificationsScreen(
         ) {
             Button(
                 label = stringResource(AppRes.string.notifications_lets_get_started),
-                onClick = { onDone(notificationSettings) },
+                onClick = {
+                    viewModel.requestNotificationPermissions()
+                    onDone(notificationSettings)
+                },
                 modifier = Modifier.weight(1f),
                 primary = true,
             )

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/screens/StartNotificationsViewModel.kt

@@ -0,0 +1,24 @@
+package org.jetbrains.kotlinconf.screens
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.stateIn
+import org.jetbrains.kotlinconf.ConferenceService
+import org.jetbrains.kotlinconf.NotificationSettings
+
+class StartNotificationsViewModel(
+    private val service: ConferenceService,
+) : ViewModel() {
+    val notificationSettings: StateFlow<NotificationSettings> = service.getNotificationSettings()
+        .stateIn(viewModelScope, SharingStarted.WhileSubscribed(5000), NotificationSettings())
+
+    fun setNotificationSettings(settings: NotificationSettings) {
+        service.setNotificationSettings(settings)
+    }
+
+    fun requestNotificationPermissions() {
+        service.requestNotificationPermissions()
+    }
+}

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/storage/ApplicationStorage.kt

@@ -3,6 +3,7 @@ package org.jetbrains.kotlinconf.storage
 import kotlinx.coroutines.flow.Flow
 import org.jetbrains.kotlinconf.Conference
 import org.jetbrains.kotlinconf.NewsItem
+import org.jetbrains.kotlinconf.NotificationSettings
 import org.jetbrains.kotlinconf.SessionId
 import org.jetbrains.kotlinconf.Theme
 
@@ -27,4 +28,7 @@ interface ApplicationStorage {
 
     fun getNews(): Flow<List<NewsItem>>
     suspend fun setNews(value: List<NewsItem>)
+
+    fun getNotificationSettings(): Flow<NotificationSettings>
+    suspend fun setNotificationSettings(value: NotificationSettings)
 }

shared/src/commonMain/kotlin/org/jetbrains/kotlinconf/storage/MultiplatformSettingsStorage.kt

@@ -12,6 +12,7 @@ import kotlinx.serialization.json.Json
 import org.jetbrains.kotlinconf.ApplicationContext
 import org.jetbrains.kotlinconf.Conference
 import org.jetbrains.kotlinconf.NewsItem
+import org.jetbrains.kotlinconf.NotificationSettings
 import org.jetbrains.kotlinconf.SessionId
 import org.jetbrains.kotlinconf.Theme
 
@@ -50,6 +51,15 @@ class MultiplatformSettingsStorage(context: ApplicationContext) : ApplicationSto
         Json.encodeToString(value)
     )
 
+    override fun getNotificationSettings(): Flow<NotificationSettings> =
+        settings.getStringOrNullFlow(Keys.NOTIFICATION_SETTINGS)
+            .map { it?.let { Json.decodeFromString<NotificationSettings>(it) } ?: NotificationSettings() }
+
+    override suspend fun setNotificationSettings(value: NotificationSettings) = settings.set(
+        Keys.NOTIFICATION_SETTINGS,
+        Json.encodeToString(value)
+    )
+
     private object Keys {
         const val USER_ID = "userid2025"
         const val ONBOARDING_COMPLETE = "onboardingComplete"
@@ -58,5 +68,6 @@ class MultiplatformSettingsStorage(context: ApplicationContext) : ApplicationSto
         const val CONFERENCE_CACHE = "conferenceCache"
         const val NEWS_CACHE = "newsCache"
         const val FAVORITES = "favorites"
+        const val NOTIFICATION_SETTINGS = "notificationSettings"
     }
 }