Updated on 2026-08-14

domain/push-notification-preferences/build.gradle.kts

@@ -0,0 +1,24 @@
+plugins {
+    alias(deps.plugins.android.library)
+    alias(deps.plugins.kotlin.android)
+    alias(deps.plugins.kotlin.kapt)
+    alias(deps.plugins.hilt.android)
+    id("configuration")
+}
+
+android {
+    namespace = "com.tangem.domain.pushnotificationpreferences"
+}
+
+dependencies {
+    /** Domain */
+    implementation(projects.domain.models)
+
+    /** Other */
+    implementation(deps.arrow.core)
+    implementation(deps.kotlin.coroutines)
+
+    /** DI */
+    implementation(deps.hilt.android)
+    kapt(deps.hilt.kapt)
+}

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/ObserveWalletPushNotificationPreferencesUseCase.kt

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+package com.tangem.domain.pushnotificationpreferences
+
+import com.tangem.domain.models.wallet.UserWalletId
+import com.tangem.domain.pushnotificationpreferences.models.WalletPushNotificationPreferences
+import com.tangem.domain.pushnotificationpreferences.repository.WalletPushNotificationPreferencesRepository
+import kotlinx.coroutines.flow.Flow
+
+class ObserveWalletPushNotificationPreferencesUseCase(
+    private val repository: WalletPushNotificationPreferencesRepository,
+) {
+
+    operator fun invoke(userWalletId: UserWalletId): Flow<WalletPushNotificationPreferences> =
+        repository.observePreferences(userWalletId)
+}

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/PreloadWalletPushNotificationPreferencesUseCase.kt

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+package com.tangem.domain.pushnotificationpreferences
+
+import com.tangem.domain.models.wallet.UserWalletId
+import com.tangem.domain.pushnotificationpreferences.repository.WalletPushNotificationPreferencesRepository
+
+class PreloadWalletPushNotificationPreferencesUseCase(
+    private val repository: WalletPushNotificationPreferencesRepository,
+) {
+
+    suspend operator fun invoke(userWalletId: UserWalletId) = repository.preload(userWalletId)
+}

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/UpdateWalletPushNotificationPreferenceUseCase.kt

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+package com.tangem.domain.pushnotificationpreferences
+
+import arrow.core.Either
+import com.tangem.domain.models.wallet.UserWalletId
+import com.tangem.domain.pushnotificationpreferences.models.PushNotificationCategory
+import com.tangem.domain.pushnotificationpreferences.repository.WalletPushNotificationPreferencesRepository
+
+class UpdateWalletPushNotificationPreferenceUseCase(
+    private val repository: WalletPushNotificationPreferencesRepository,
+) {
+
+    suspend operator fun invoke(
+        userWalletId: UserWalletId,
+        category: PushNotificationCategory,
+        isEnabled: Boolean,
+    ): Either<Throwable, Unit> = repository.updatePreference(
+        userWalletId = userWalletId,
+        category = category,
+        isEnabled = isEnabled,
+    )
+}

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/models/PushNotificationCategory.kt

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+package com.tangem.domain.pushnotificationpreferences.models
+
+enum class PushNotificationCategory {
+    TransactionAlerts,
+    OffersUpdates,
+    PriceAlerts,
+}

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/models/PushNotificationPreference.kt

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+package com.tangem.domain.pushnotificationpreferences.models
+
+data class PushNotificationPreference(
+    val isEnabled: Boolean,
+    val isVisible: Boolean,
+)

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/models/WalletPushNotificationPreferences.kt

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+package com.tangem.domain.pushnotificationpreferences.models
+
+data class WalletPushNotificationPreferences(
+    val transactionAlerts: PushNotificationPreference,
+    val offersUpdates: PushNotificationPreference,
+    val priceAlerts: PushNotificationPreference,
+)

domain/push-notification-preferences/src/main/kotlin/com/tangem/domain/pushnotificationpreferences/repository/WalletPushNotificationPreferencesRepository.kt

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+package com.tangem.domain.pushnotificationpreferences.repository
+
+import arrow.core.Either
+import com.tangem.domain.models.wallet.UserWalletId
+import com.tangem.domain.pushnotificationpreferences.models.PushNotificationCategory
+import com.tangem.domain.pushnotificationpreferences.models.WalletPushNotificationPreferences
+import kotlinx.coroutines.flow.Flow
+
+/** Per-wallet push notification preferences. In-memory cache, not persisted. */
+interface WalletPushNotificationPreferencesRepository {
+
+    /** Warms up the cache for [userWalletId]. No-op if already cached. */
+    suspend fun preload(userWalletId: UserWalletId)
+
+    fun observePreferences(userWalletId: UserWalletId): Flow<WalletPushNotificationPreferences>
+
+    /** Updates a single [category]; full-replace PUT under the hood. On failure cache is untouched. */
+    suspend fun updatePreference(
+        userWalletId: UserWalletId,
+        category: PushNotificationCategory,
+        isEnabled: Boolean,
+    ): Either<Throwable, Unit>
+}