add setting storage

shared/build.gradle.kts

@@ -33,6 +33,8 @@ kotlin {
             implementation(libs.ktor.serialization.kotlinx.json)
             implementation(libs.androidx.lifecycle.viewmodelCompose)
             implementation(libs.androidx.lifecycle.runtimeCompose)
+            implementation(libs.androidx.datastore.preferences)
+            implementation(libs.androidx.datastore)
             implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.11.0")
             implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.8.0")
             implementation("su.reya:nostr-sdk-kmp:0.3.2")

shared/src/commonMain/kotlin/su/reya/coop/storage/KeyValueStorage.kt

@@ -0,0 +1,11 @@
+package su.reya.coop.storage
+
+import kotlinx.coroutines.flow.Flow
+
+interface KeyValueStorage {
+    suspend fun get(key: String): String?
+    fun getFlow(key: String): Flow<String?>
+    suspend fun set(key: String, value: String)
+    suspend fun clear(key: String)
+    suspend fun has(key: String): Boolean
+}

shared/src/commonMain/kotlin/su/reya/coop/storage/SettingStorage.kt

@@ -0,0 +1,33 @@
+package su.reya.coop.storage
+
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.Preferences
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.stringPreferencesKey
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.map
+
+class SettingStorage(
+    private val dataStore: DataStore<Preferences>
+) : KeyValueStorage {
+    override suspend fun get(key: String): String? {
+        return dataStore.data.map { it[stringPreferencesKey(key)] }.first()
+    }
+
+    override fun getFlow(key: String): Flow<String?> {
+        return dataStore.data.map { it[stringPreferencesKey(key)] }
+    }
+
+    override suspend fun set(key: String, value: String) {
+        dataStore.edit { it[stringPreferencesKey(key)] = value }
+    }
+
+    override suspend fun clear(key: String) {
+        dataStore.edit { it.remove(stringPreferencesKey(key)) }
+    }
+
+    override suspend fun has(key: String): Boolean {
+        return dataStore.data.map { it.contains(stringPreferencesKey(key)) }.first()
+    }
+}

shared/src/commonMain/kotlin/su/reya/coop/viewmodel/AuthViewModel.kt

@@ -17,6 +17,7 @@ import su.reya.coop.nostr.ExternalSignerProxy
 import su.reya.coop.nostr.Nostr
 import su.reya.coop.nostr.SignerPermissions
 import su.reya.coop.repository.MediaRepository
+import su.reya.coop.storage.KeyValueStorage
 import su.reya.coop.storage.SecretStorage
 import kotlin.time.Duration.Companion.seconds
 
@@ -28,6 +29,7 @@ data class AuthState(
 class AuthViewModel(
     private val nostr: Nostr,
     private val secretStore: SecretStorage,
+    private val settingStorage: KeyValueStorage,
     private val externalSignerHandler: ExternalSignerHandler? = null,
 ) : BaseViewModel() {
     private val mediaRepository = MediaRepository()
@@ -51,7 +53,7 @@ class AuthViewModel(
 
     private fun checkNotificationBannerDismissedStatus() {
         viewModelScope.launch {
-            val dismissed = secretStore.get(KEY_BANNER_DISMISSED) == "true"
+            val dismissed = settingStorage.get(KEY_BANNER_DISMISSED) == "true"
             _state.update { it.copy(isNotificationBannerDismissed = dismissed) }
         }
     }
@@ -95,7 +97,7 @@ class AuthViewModel(
             } finally {
                 // Clear credentials from persistent storage
                 secretStore.clear(KEY_USER_SIGNER)
-                secretStore.clear(KEY_BANNER_DISMISSED)
+                settingStorage.clear(KEY_BANNER_DISMISSED)
                 // Call cleanup callback (e.g. to reset other ViewModels)
                 onLogout()
                 // Reset local states
@@ -106,7 +108,7 @@ class AuthViewModel(
 
     fun dismissNotificationBanner() {
         viewModelScope.launch {
-            secretStore.set(KEY_BANNER_DISMISSED, "true")
+            settingStorage.set(KEY_BANNER_DISMISSED, "true")
             _state.update { it.copy(isNotificationBannerDismissed = true) }
         }
     }