Updated on 2026-08-14

core/datasource/src/main/java/com/tangem/datasource/api/common/config/TangemPay.kt

@@ -3,6 +3,7 @@ package com.tangem.datasource.api.common.config
 import com.tangem.datasource.BuildConfig
 import com.tangem.datasource.local.config.environment.EnvironmentConfig
 import com.tangem.utils.ProviderSuspend
+import com.tangem.utils.SupportedLanguages
 import com.tangem.utils.info.AppInfoProvider
 
 internal sealed class TangemPay(
@@ -56,6 +57,7 @@ internal sealed class TangemPay(
         "platform" to ProviderSuspend { "Android" },
         "X-API-KEY" to ProviderSuspend { getBffStaticToken(apiEnvironment) },
         "X-Device-Scale" to ProviderSuspend { appInfoProvider.deviceScale.toString() },
+        "Accept-Language" to ProviderSuspend { SupportedLanguages.getCurrentSupportedLanguageCode() },
     )
 
     private fun getBffStaticToken(apiEnvironment: ApiEnvironment): String {

core/datasource/src/main/java/com/tangem/datasource/api/pay/TangemPayApi.kt

@@ -194,13 +194,11 @@ interface TangemPayApi {
     @GET("v1/customer/cashback/promotions")
     suspend fun getCashbackPromotions(
         @Header("Authorization") authHeader: String,
-        @Header("Accept-Language") language: String,
     ): ApiResponse<CashbackPromotionsResponse>
 
     @GET("v1/customer/cashback/accruals/docs")
     suspend fun getCashbackAccrualDocs(
         @Header("Authorization") authHeader: String,
-        @Header("Accept-Language") language: String,
     ): ApiResponse<CashbackAccrualDocsResponse>
 
     @GET("v1/customer/cashback/history")

core/datasource/src/test/kotlin/com/tangem/datasource/api/common/config/managers/ProdApiConfigsManagerTest.kt

@@ -18,6 +18,7 @@ import com.tangem.datasource.api.auth.P2PEthPoolAuthProvider
 import com.tangem.datasource.api.auth.StakeKitAuthProvider
 import com.tangem.test.core.ProvideTestModels
 import com.tangem.utils.ProviderSuspend
+import com.tangem.utils.SupportedLanguages
 import com.tangem.utils.info.AppInfoProvider
 import io.mockk.clearMocks
 import io.mockk.coEvery
@@ -300,6 +301,7 @@ internal class ProdApiConfigsManagerTest {
                     "platform" to ProviderSuspend { "Android" },
                     "X-API-KEY" to ProviderSuspend { TANGEM_PAY_BFF_KEY_DEV },
                     "X-Device-Scale" to ProviderSuspend { DEVICE_SCALE.toString() },
+                    "Accept-Language" to ProviderSuspend { SupportedLanguages.getCurrentSupportedLanguageCode() },
                 ),
             ),
         )
@@ -316,6 +318,7 @@ internal class ProdApiConfigsManagerTest {
                     "platform" to ProviderSuspend { "Android" },
                     "X-API-KEY" to ProviderSuspend { TANGEM_PAY_BFF_KEY_DEV },
                     "X-Device-Scale" to ProviderSuspend { DEVICE_SCALE.toString() },
+                    "Accept-Language" to ProviderSuspend { SupportedLanguages.getCurrentSupportedLanguageCode() },
                 ),
             ),
         )

data/visa/src/main/kotlin/com/tangem/data/pay/repository/DefaultCashbackRepository.kt

@@ -14,7 +14,6 @@ import com.tangem.domain.pay.model.CashbackPromotions
 import com.tangem.domain.pay.model.CashbackSummary
 import com.tangem.domain.pay.repository.CashbackRepository
 import com.tangem.domain.visa.error.VisaApiError
-import com.tangem.utils.SupportedLanguages
 import javax.inject.Inject
 
 internal class DefaultCashbackRepository @Inject constructor(
@@ -31,10 +30,7 @@ internal class DefaultCashbackRepository @Inject constructor(
 
     override suspend fun getCashbackPromotions(userWalletId: UserWalletId): Either<VisaApiError, CashbackPromotions> {
         return requestHelper.performRequest(userWalletId) { authHeader ->
-            tangemPayApi.getCashbackPromotions(
+            tangemPayApi.getCashbackPromotions(authHeader = authHeader)
-                authHeader = authHeader,
-                language = SupportedLanguages.getCurrentSupportedLanguageCode(),
-            )
         }.map(CashbackPromotionsConverter::convert)
     }
 
@@ -42,10 +38,7 @@ internal class DefaultCashbackRepository @Inject constructor(
         userWalletId: UserWalletId,
     ): Either<VisaApiError, List<CashbackDocument>> {
         return requestHelper.performRequest(userWalletId) { authHeader ->
-            tangemPayApi.getCashbackAccrualDocs(
+            tangemPayApi.getCashbackAccrualDocs(authHeader = authHeader)
-                authHeader = authHeader,
-                language = SupportedLanguages.getCurrentSupportedLanguageCode(),
-            )
         }.map(CashbackAccrualDocsConverter::convert)
     }
 

data/visa/src/test/kotlin/com/tangem/data/pay/repository/DefaultCashbackRepositoryTest.kt

@@ -44,7 +44,7 @@ internal class DefaultCashbackRepositoryTest {
     fun `GIVEN promotions response WHEN getCashbackPromotions THEN converter result is returned`() = runTest {
         // Arrange
         val response = CashbackPromotionsResponse(cashbackOnCards = null, additionalCashback = null)
-        coEvery { tangemPayApi.getCashbackPromotions(any(), any()) } returns ApiResponse.Success(response)
+        coEvery { tangemPayApi.getCashbackPromotions(any()) } returns ApiResponse.Success(response)
 
         // Act
         val actual = createRepository().getCashbackPromotions(userWalletId)
@@ -56,7 +56,7 @@ internal class DefaultCashbackRepositoryTest {
     @Test
     fun `GIVEN backend error WHEN getCashbackPromotions THEN error is propagated`() = runTest {
         // Arrange
-        coEvery { tangemPayApi.getCashbackPromotions(any(), any()) } returns
+        coEvery { tangemPayApi.getCashbackPromotions(any()) } returns
             ApiResponse.Error(ApiResponseError.NetworkException()) as ApiResponse<CashbackPromotionsResponse>
 
         // Act
@@ -72,7 +72,7 @@ internal class DefaultCashbackRepositoryTest {
         val response = CashbackAccrualDocsResponse(
             docs = listOf(CashbackAccrualDocsResponse.Doc(id = "1", title = "Terms", url = "https://a")),
         )
-        coEvery { tangemPayApi.getCashbackAccrualDocs(any(), any()) } returns ApiResponse.Success(response)
+        coEvery { tangemPayApi.getCashbackAccrualDocs(any()) } returns ApiResponse.Success(response)
 
         // Act
         val actual = createRepository().getCashbackAccrualDocs(userWalletId)
@@ -84,7 +84,7 @@ internal class DefaultCashbackRepositoryTest {
     @Test
     fun `GIVEN backend error WHEN getCashbackAccrualDocs THEN error is propagated`() = runTest {
         // Arrange
-        coEvery { tangemPayApi.getCashbackAccrualDocs(any(), any()) } returns
+        coEvery { tangemPayApi.getCashbackAccrualDocs(any()) } returns
             ApiResponse.Error(ApiResponseError.NetworkException()) as ApiResponse<CashbackAccrualDocsResponse>
 
         // Act