Updated on 2026-08-14

core/datasource/src/main/java/com/tangem/datasource/di/NewsStoreModule.kt

@@ -3,6 +3,8 @@ package com.tangem.datasource.di
 import com.tangem.datasource.local.datastore.RuntimeSharedStore
 import com.tangem.datasource.local.news.details.DefaultNewsDetailsStore
 import com.tangem.datasource.local.news.details.NewsDetailsStore
+import com.tangem.datasource.local.news.liked.DefaultNewsLikedStore
+import com.tangem.datasource.local.news.liked.NewsLikedStore
 import com.tangem.datasource.local.news.trending.DefaultTrendingNewsStore
 import com.tangem.datasource.local.news.trending.TrendingNewsStore
 import com.tangem.datasource.local.news.viewed.DefaultNewsViewedStore
@@ -34,4 +36,10 @@ internal object NewsStoreModule {
     fun provideNewsViewedStore(): NewsViewedStore {
         return DefaultNewsViewedStore(store = RuntimeSharedStore())
     }
+
+    @Provides
+    @Singleton
+    fun provideNewsLikedStore(): NewsLikedStore {
+        return DefaultNewsLikedStore(store = RuntimeSharedStore())
+    }
 }

core/datasource/src/main/java/com/tangem/datasource/local/news/liked/DefaultNewsLikedStore.kt

@@ -0,0 +1,32 @@
+package com.tangem.datasource.local.news.liked
+
+import com.tangem.datasource.local.datastore.RuntimeSharedStore
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.onStart
+
+private typealias NewsLikedCache = Map<Int, Boolean>
+
+internal class DefaultNewsLikedStore(
+    private val store: RuntimeSharedStore<NewsLikedCache>,
+) : NewsLikedStore {
+
+    override fun getAll(): Flow<Map<Int, Boolean>> {
+        return store.get().onStart { emit(emptyMap()) }
+    }
+
+    override suspend fun getSync(): Map<Int, Boolean> {
+        return store.getSyncOrNull().orEmpty()
+    }
+
+    override suspend fun updateLiked(articleIds: Collection<Int>, liked: Boolean) {
+        if (articleIds.isEmpty()) return
+
+        store.update(emptyMap()) { current ->
+            val updated = current.toMutableMap()
+            articleIds.forEach { id ->
+                updated[id] = liked
+            }
+            updated
+        }
+    }
+}

core/datasource/src/main/java/com/tangem/datasource/local/news/liked/NewsLikedStore.kt

@@ -0,0 +1,24 @@
+package com.tangem.datasource.local.news.liked
+
+import kotlinx.coroutines.flow.Flow
+
+/**
+ * Store for news liked flags (runtime only).
+ */
+interface NewsLikedStore {
+
+    /**
+     * Observes all liked flags.
+     */
+    fun getAll(): Flow<Map<Int, Boolean>>
+
+    /**
+     * Gets liked flags synchronously (returns empty map if no data).
+     */
+    suspend fun getSync(): Map<Int, Boolean>
+
+    /**
+     * Updates liked flags for provided article ids.
+     */
+    suspend fun updateLiked(articleIds: Collection<Int>, liked: Boolean)
+}