Updated on 2026-08-14

data/news/src/main/java/com/tangem/data/news/repository/DefaultNewsRepository.kt

@@ -26,6 +26,7 @@ import com.tangem.domain.news.repository.NewsRepository
 import com.tangem.pagination.*
 import com.tangem.pagination.exception.EndOfPaginationException
 import com.tangem.pagination.fetcher.BatchFetcher
+import com.tangem.utils.SupportedLanguages
 import com.tangem.utils.coroutines.CoroutineDispatcherProvider
 import com.tangem.utils.coroutines.runSuspendCatching
 import com.tangem.utils.logging.TangemLogger
@@ -47,6 +48,9 @@ internal class DefaultNewsRepository(
     private val newsErrorResolver: NewsErrorResolver,
 ) : NewsRepository {
 
+    private val language: String
+        get() = SupportedLanguages.getCurrentSupportedLanguageCode()
+
     override fun getNewsListBatchFlow(context: NewsListBatchingContext, batchSize: Int): NewsListBatchFlow {
         val newsBatchFlow = BatchListSource(
             fetchDispatcher = dispatchers.io,
@@ -63,7 +67,7 @@ internal class DefaultNewsRepository(
             val items = newsApi.getNews(
                 page = FIRST_PAGE,
                 limit = limit,
-                language = config.language,
+                language = language,
                 snapshot = config.snapshot,
                 tokenIds = config.tokenIds.takeIf { it.isNotEmpty() },
                 categoryIds = config.categoryIds.takeIf { it.isNotEmpty() },
@@ -105,12 +109,10 @@ internal class DefaultNewsRepository(
             }
     }
 
-    override suspend fun fetchDetailedArticles(
-        newsIds: Collection<Int>,
-        language: String?,
-    ): Either<Map<Int, Throwable>, Unit> = fetchDetailedArticlesInternal(newsIds = newsIds, language = language)
+    override suspend fun fetchDetailedArticles(newsIds: Collection<Int>): Either<Map<Int, Throwable>, Unit> =
+        fetchDetailedArticlesInternal(newsIds = newsIds, language = language)
 
-    override suspend fun fetchTrendingNews(limit: Int, language: String?) {
+    override suspend fun fetchTrendingNews(limit: Int) {
         fetchAndStoreTrendingNews(limit = limit, language = language)
     }
 
@@ -259,7 +261,7 @@ internal class DefaultNewsRepository(
         )
     }
 
-    private class NewsBatchFetcher(
+    private inner class NewsBatchFetcher(
         private val newsApi: NewsApi,
         private val batchSize: Int,
         private val newsViewedStore: NewsViewedStore,
@@ -326,7 +328,7 @@ internal class DefaultNewsRepository(
             val response = newsApi.getNews(
                 page = page,
                 limit = limit,
-                language = params.language,
+                language = language,
                 snapshot = snapshotOverride?.takeIf { it.isNotEmpty() },
                 tokenIds = params.tokenIds.takeIf { it.isNotEmpty() },
                 categoryIds = params.categoryIds.takeIf { it.isNotEmpty() },

domain/news/src/main/java/com/tangem/domain/news/model/NewsListConfig.kt

@@ -7,14 +7,12 @@ import kotlinx.serialization.Serializable
  *
 [REDACTED_AUTHOR]
  *
- * @param language device locale (ex: en, ru).
  * @param snapshot id snapshot (`meta.asOf`) to stabilize responses.
  * @param tokenIds filter by tokens.
  * @param categoryIds filter by category.
  */
 @Serializable
 data class NewsListConfig(
-    val language: String,
     val snapshot: String?,
     val tokenIds: List<String> = emptyList(),
     val categoryIds: List<Int> = emptyList(),

domain/news/src/main/java/com/tangem/domain/news/repository/NewsRepository.kt

@@ -38,15 +38,14 @@ interface NewsRepository {
     /**
      * Fetches and caches detailed articles for provided ids in parallel.
      */
-    suspend fun fetchDetailedArticles(newsIds: Collection<Int>, language: String?): Either<Map<Int, Throwable>, Unit>
+    suspend fun fetchDetailedArticles(newsIds: Collection<Int>): Either<Map<Int, Throwable>, Unit>
 
     /**
      * Fetch list of trending news by limit and with correct locale and store it in runtime data store.
      *
      * @param limit
-     * @param language current device locale
      */
-    suspend fun fetchTrendingNews(limit: Int, language: String?)
+    suspend fun fetchTrendingNews(limit: Int)
 
     /**
      * Observes trending news with runtime viewed flag support.

domain/news/src/main/java/com/tangem/domain/news/usecase/FetchTrendingNewsUseCase.kt

@@ -2,7 +2,6 @@ package com.tangem.domain.news.usecase
 
 import arrow.core.Either
 import com.tangem.domain.news.repository.NewsRepository
-import java.util.Locale
 
 /**
  * Fetches trending news to store it in runtime data store.
@@ -11,10 +10,7 @@ import java.util.Locale
 class FetchTrendingNewsUseCase(private val newsRepository: NewsRepository) {
 
     suspend operator fun invoke(): Either<Throwable, Unit> = Either.catch {
-        newsRepository.fetchTrendingNews(
-            limit = LIMIT_FOR_TRENDING_NEWS,
-            language = Locale.getDefault().language,
-        )
+        newsRepository.fetchTrendingNews(limit = LIMIT_FOR_TRENDING_NEWS)
     }
 
     companion object {

domain/news/src/main/java/com/tangem/domain/news/usecase/ObserveNewsDetailsUseCase.kt

@@ -24,6 +24,6 @@ class ObserveNewsDetailsUseCase(
     /**
      * Prefetches the given article ids (can be called with current + next ids for pager preloading).
      */
-    suspend fun prefetch(newsIds: Collection<Int>, language: String?): Either<Map<Int, Throwable>, Unit> =
-        repository.fetchDetailedArticles(newsIds, language)
+    suspend fun prefetch(newsIds: Collection<Int>): Either<Map<Int, Throwable>, Unit> =
+        repository.fetchDetailedArticles(newsIds)
 }

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/market/details/MarketsTokenDetailsModel.kt

@@ -336,7 +336,6 @@ internal class MarketsTokenDetailsModel @Inject constructor(
             getNewsUseCase.getNews(
                 limit = RELATED_NEWS_LIMIT,
                 newsListConfig = NewsListConfig(
-                    language = Locale.getDefault().language,
                     snapshot = null,
                     tokenIds = listOf(params.token.id.value),
                 ),

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/details/NewsDetailsModel.kt

@@ -32,12 +32,11 @@ import com.tangem.features.feed.ui.news.details.state.NewsDetailsUM
 import com.tangem.features.feed.ui.news.details.state.RelatedTokensUM
 import com.tangem.utils.Provider
 import com.tangem.utils.coroutines.CoroutineDispatcherProvider
+import com.tangem.utils.logging.TangemLogger
 import kotlinx.collections.immutable.persistentListOf
 import kotlinx.collections.immutable.toImmutableList
 import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.launch
-import com.tangem.utils.logging.TangemLogger
-import java.util.Locale
 import javax.inject.Inject
 
 @Stable
@@ -60,14 +59,12 @@ internal class NewsDetailsModel @Inject constructor(
 ) : Model() {
 
     private val params = paramsContainer.require<DefaultNewsDetailsComponent.Params>()
-    private val currentLanguage = Locale.getDefault().language
 
     private val newsDetailsConverter = NewsDetailsConverter(onRelatedArticleClick = ::onRelatedArticleClick)
 
     private val paginationManager: NewsDetailsPaginationManager? = params.paginationConfig?.let { config ->
         NewsDetailsPaginationManager(
             getNewsListBatchFlowUseCase = getNewsListBatchFlowUseCase,
-            currentLanguage = Provider { config.language },
             currentCategoryIds = Provider { config.categoryIds },
             modelScope = modelScope,
             dispatchers = dispatchers,
@@ -212,10 +209,7 @@ internal class NewsDetailsModel @Inject constructor(
     }
 
     private suspend fun initialPrefetch() {
-        observeNewsDetailsUseCase.prefetch(
-            newsIds = params.preselectedArticlesId,
-            language = currentLanguage,
-        ).onLeft { errors ->
+        observeNewsDetailsUseCase.prefetch(newsIds = params.preselectedArticlesId).onLeft { errors ->
             errors.onEach { (newsId, error) ->
                 when {
                     // an article is opened from deeplink and is not found

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/details/NewsDetailsPaginationManager.kt

@@ -14,7 +14,6 @@ import kotlinx.coroutines.launch
 @Suppress("LongParameterList")
 internal class NewsDetailsPaginationManager(
     private val observeNewsDetailsUseCase: ObserveNewsDetailsUseCase,
-    private val currentLanguage: Provider<String>,
     getNewsListBatchFlowUseCase: GetNewsListBatchFlowUseCase,
     dispatchers: CoroutineDispatcherProvider,
     currentCategoryIds: Provider<List<Int>>,
@@ -23,7 +22,6 @@ internal class NewsDetailsPaginationManager(
     isRedesignEnabled: Boolean,
 ) : NewsListBatchFlowManager(
     getNewsListBatchFlowUseCase = getNewsListBatchFlowUseCase,
-    currentLanguage = currentLanguage,
     currentCategoryIds = currentCategoryIds,
     modelScope = modelScope,
     dispatchers = dispatchers,
@@ -53,10 +51,7 @@ internal class NewsDetailsPaginationManager(
                 .distinctUntilChanged()
                 .collect { newIds ->
                     if (newIds.isNotEmpty()) {
-                        observeNewsDetailsUseCase.prefetch(
-                            newsIds = newIds,
-                            language = currentLanguage(),
-                        )
+                        observeNewsDetailsUseCase.prefetch(newsIds = newIds)
                         _cachedPrefetchedIds.update { it + newIds }
                     }
                 }

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/list/NewsListModel.kt

@@ -11,13 +11,12 @@ import com.tangem.domain.news.usecase.GetNewsCategoriesUseCase
 import com.tangem.domain.news.usecase.GetNewsListBatchFlowUseCase
 import com.tangem.features.feed.components.news.list.DefaultNewsListComponent
 import com.tangem.features.feed.model.news.list.analytics.NewsListAnalyticsEvent
-import com.tangem.features.feed.model.news.list.statemanager.NewsListStateManager
 import com.tangem.features.feed.model.news.list.loader.NewsCategoriesLoader
 import com.tangem.features.feed.model.news.list.statemanager.NewsListBatchFlowManager
+import com.tangem.features.feed.model.news.list.statemanager.NewsListStateManager
 import com.tangem.features.feed.ui.news.list.state.NewsListState
 import com.tangem.features.feed.ui.news.list.state.NewsListUM
 import com.tangem.utils.Provider
-import com.tangem.utils.SupportedLanguages
 import com.tangem.utils.coroutines.CoroutineDispatcherProvider
 import kotlinx.collections.immutable.ImmutableList
 import kotlinx.collections.immutable.persistentListOf
@@ -41,7 +40,6 @@ internal class NewsListModel @Inject constructor(
 
     private val params = paramsContainer.require<DefaultNewsListComponent.Params>()
     private val selectedCategoryId = MutableStateFlow<Int?>(null)
-    private val currentLanguage = SupportedLanguages.getCurrentSupportedLanguageCode()
 
     private val categoriesLoader by lazy {
         NewsCategoriesLoader(
@@ -54,7 +52,6 @@ internal class NewsListModel @Inject constructor(
     private val batchFlowManager by lazy {
         NewsListBatchFlowManager(
             getNewsListBatchFlowUseCase = getNewsListBatchFlowUseCase,
-            currentLanguage = Provider { currentLanguage },
             currentCategoryIds = Provider {
                 selectedCategoryId.value?.takeIf { it > 0 }?.let { listOf(it) }.orEmpty()
             },
@@ -158,7 +155,6 @@ internal class NewsListModel @Inject constructor(
 
     private fun createNewsListConfig(): NewsListConfig {
         return NewsListConfig(
-            language = currentLanguage,
             snapshot = null,
             tokenIds = emptyList(),
             categoryIds = selectedCategoryId.value?.takeIf { it > 0 }?.let { listOf(it) }.orEmpty(),

features/feed/impl/src/main/kotlin/com/tangem/features/feed/model/news/list/statemanager/NewsListBatchFlowManager.kt

@@ -20,11 +20,9 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.*
 import kotlinx.coroutines.launch
 
-@Suppress("LongParameterList")
 internal open class NewsListBatchFlowManager(
     private val isRedesignEnabled: Boolean,
     getNewsListBatchFlowUseCase: GetNewsListBatchFlowUseCase,
-    private val currentLanguage: Provider<String>,
     private val currentCategoryIds: Provider<List<Int>>,
     protected val modelScope: CoroutineScope,
     protected val dispatchers: CoroutineDispatcherProvider,
@@ -146,7 +144,6 @@ internal open class NewsListBatchFlowManager(
 
     private fun createNewsListConfig(): NewsListConfig {
         return NewsListConfig(
-            language = currentLanguage(),
             snapshot = null,
             tokenIds = emptyList(),
             categoryIds = currentCategoryIds(),