Updated on 2026-08-14

features/swap/domain/src/main/java/com/tangem/feature/swap/domain/transfer/SwapTransferInteractor.kt

@@ -30,13 +30,13 @@ interface SwapTransferInteractor {
     suspend fun loadFee(
         fromSwapCurrencyStatus: SwapCurrencyStatus,
         toSwapCurrencyStatus: SwapCurrencyStatus,
-        fromTokenAmount: String,
+        fromTokenAmount: BigDecimal,
     ): Either<GetFeeError, TransactionFee>
 
     suspend fun loadFeeExtended(
         fromSwapCurrencyStatus: SwapCurrencyStatus,
         toSwapCurrencyStatus: SwapCurrencyStatus,
-        fromTokenAmount: String,
+        fromTokenAmount: BigDecimal,
     ): Either<GetFeeError, TransactionFeeExtended>
 
     suspend fun sendTransfer(

features/swap/domain/src/main/java/com/tangem/feature/swap/domain/transfer/SwapTransferInteractorImpl.kt

@@ -205,15 +205,14 @@ class SwapTransferInteractorImpl @Inject constructor(
     override suspend fun loadFee(
         fromSwapCurrencyStatus: SwapCurrencyStatus,
         toSwapCurrencyStatus: SwapCurrencyStatus,
-        fromTokenAmount: String,
+        fromTokenAmount: BigDecimal,
     ): Either<GetFeeError, TransactionFee> {
-        val amount = fromTokenAmount.parseBigDecimalOrNull() ?: BigDecimal.ZERO
         val destination = toSwapCurrencyStatus.destinationAddress() ?: return feeDataError(
             message = "Destination address is null",
         )
 
         return getFeeUseCase(
-            amount = amount,
+            amount = fromTokenAmount,
             destination = destination,
             userWallet = fromSwapCurrencyStatus.userWallet,
             cryptoCurrency = fromSwapCurrencyStatus.currency,
@@ -223,9 +222,8 @@ class SwapTransferInteractorImpl @Inject constructor(
     override suspend fun loadFeeExtended(
         fromSwapCurrencyStatus: SwapCurrencyStatus,
         toSwapCurrencyStatus: SwapCurrencyStatus,
-        fromTokenAmount: String,
+        fromTokenAmount: BigDecimal,
     ): Either<GetFeeError, TransactionFeeExtended> {
-        val amount = fromTokenAmount.parseBigDecimalOrNull() ?: BigDecimal.ZERO
         val destination = toSwapCurrencyStatus.destinationAddress() ?: return feeDataError(
             message = "Destination address is null",
         )
@@ -233,7 +231,7 @@ class SwapTransferInteractorImpl @Inject constructor(
         val currency = fromSwapCurrencyStatus.currency
 
         val transactionData = createTransferTransactionUseCase(
-            amount = amount.convertToSdkAmount(
+            amount = fromTokenAmount.convertToSdkAmount(
                 cryptoCurrencyStatus = fromSwapCurrencyStatus.status,
             ),
             memo = null,

features/swap/domain/src/test/kotlin/com/tangem/feature/swap/domain/transfer/SwapTransferInteractorImplTest.kt

@@ -133,7 +133,17 @@ internal class SwapTransferInteractorImplTest {
             every { getBalanceHidingSettingsUseCase.isBalanceHidden() } returns flowOf(true)
             coEvery { isAccountsModeEnabledUseCase.invokeSync() } returns true
             val currencyCheck = buildCurrencyCheck()
-            coEvery { getCurrencyCheckUseCase(any(), any(), any(), any(), any(), any(), any()) } returns currencyCheck
+            coEvery {
+                getCurrencyCheckUseCase(
+                    userWalletId = any(),
+                    currencyStatus = any(),
+                    feeCurrencyStatus = any(),
+                    amount = any(),
+                    fee = any(),
+                    feeCurrencyBalanceAfterTransaction = any(),
+                    recipientAddress = any(),
+                )
+            } returns currencyCheck
             coEvery {
                 isAmountSubtractAvailableUseCase(any(), any(), any())
             } returns false.right()
@@ -193,7 +203,17 @@ internal class SwapTransferInteractorImplTest {
         every { getBalanceHidingSettingsUseCase.isBalanceHidden() } returns flowOf(true)
         coEvery { isAccountsModeEnabledUseCase.invokeSync() } returns true
         val currencyCheck = buildCurrencyCheck()
-        coEvery { getCurrencyCheckUseCase(any(), any(), any(), any(), any(), any(), any()) } returns currencyCheck
+        coEvery {
+            getCurrencyCheckUseCase(
+                userWalletId = any(),
+                currencyStatus = any(),
+                feeCurrencyStatus = any(),
+                amount = any(),
+                fee = any(),
+                feeCurrencyBalanceAfterTransaction = any(),
+                recipientAddress = any(),
+            )
+        } returns currencyCheck
         coEvery {
             isAmountSubtractAvailableUseCase(any(), any(), any())
         } returns false.right()
@@ -259,7 +279,15 @@ internal class SwapTransferInteractorImplTest {
             every { getBalanceHidingSettingsUseCase.isBalanceHidden() } returns flowOf(false)
             coEvery { isAccountsModeEnabledUseCase.invokeSync() } returns false
             coEvery {
-                getCurrencyCheckUseCase(any(), any(), any(), any(), any(), any(), any())
+                getCurrencyCheckUseCase(
+                    userWalletId = any(),
+                    currencyStatus = any(),
+                    feeCurrencyStatus = any(),
+                    amount = any(),
+                    fee = any(),
+                    feeCurrencyBalanceAfterTransaction = any(),
+                    recipientAddress = any(),
+                )
             } returns buildCurrencyCheck()
             coEvery {
                 isAmountSubtractAvailableUseCase(any(), any(), any())
@@ -309,7 +337,7 @@ internal class SwapTransferInteractorImplTest {
         val result = sut.loadFee(
             fromSwapCurrencyStatus = fromCurrencyStatus,
             toSwapCurrencyStatus = toCurrencyStatus,
-            fromTokenAmount = "1.5",
+            fromTokenAmount = BigDecimal("1.5"),
         )
 
         assertThat(result).isEqualTo(transactionFee.right())
@@ -365,7 +393,7 @@ internal class SwapTransferInteractorImplTest {
         val result = sut.loadFeeExtended(
             fromSwapCurrencyStatus = fromCurrencyStatus,
             toSwapCurrencyStatus = toCurrencyStatus,
-            fromTokenAmount = "2.0",
+            fromTokenAmount = BigDecimal("2.0"),
         )
 
         assertThat(result).isEqualTo(feeExtended.right())

features/swap/impl/src/main/java/com/tangem/feature/swap/DefaultSwapFeatureToggles.kt

@@ -18,7 +18,7 @@ internal class DefaultSwapFeatureToggles @Inject constructor(
     )
 
     override val isSwapIntegratedApproveEnabled: Boolean = featureTogglesManager.isFeatureEnabled(
-        toggle = FeatureToggles.SWAP_INTEGRATED_APPROVE,
+        toggle = FeatureToggles.AND_15120_SWAP_INTEGRATED_APPROVE,
     )
 
     override val isSwapAbEnabled: Boolean = featureTogglesManager.isFeatureEnabled(

features/swap/impl/src/main/java/com/tangem/feature/swap/model/SwapModel.kt

@@ -2180,6 +2180,7 @@ internal class SwapModel @Inject constructor(
                 dataState.fromSwapCurrencyStatus ?: return Either.Left(GetFeeError.UnknownError)
             val toSwapCurrencyStatus =
                 dataState.toSwapCurrencyStatus ?: return Either.Left(GetFeeError.UnknownError)
+            val amount = lastAmount.value.parseBigDecimalOrNull() ?: return Either.Left(GetFeeError.UnknownError)
             val shouldTransferInsteadOfSwap = swapTransferInteractor.shouldTransferInsteadOfSwap(
                 fromSwapCurrencyStatus.currency,
                 toSwapCurrencyStatus.currency,
@@ -2188,7 +2189,7 @@ internal class SwapModel @Inject constructor(
                 return swapTransferInteractor.loadFee(
                     fromSwapCurrencyStatus = fromSwapCurrencyStatus,
                     toSwapCurrencyStatus = toSwapCurrencyStatus,
-                    fromTokenAmount = lastAmount.value,
+                    fromTokenAmount = amount,
                 ).onLeft {
                     TangemLogger.e("loadFee[transfer]: Failed to load fee with error $it")
                 }.onRight {
@@ -2202,9 +2203,7 @@ internal class SwapModel @Inject constructor(
                 return Either.Left(GetFeeError.UnknownError)
             }
 
-            val amountDecimal = lastAmount.value.replace(",", ".").toBigDecimalOrNull()
-                ?: return Either.Left(GetFeeError.UnknownError)
-            val swapAmount = SwapAmount(amountDecimal, fromSwapCurrencyStatus.currency.decimals)
+            val swapAmount = SwapAmount(amount, fromSwapCurrencyStatus.currency.decimals)
             val swapDataForCall = when (quoteState.swapProvider.type) {
                 ExchangeProviderType.DEX, ExchangeProviderType.DEX_BRIDGE -> {
                     quoteState.swapDataModel ?: return Either.Left(GetFeeError.UnknownError)
@@ -2235,6 +2234,8 @@ internal class SwapModel @Inject constructor(
                 dataState.fromSwapCurrencyStatus ?: return Either.Left(GetFeeError.UnknownError)
             val toSwapCurrencyStatus =
                 dataState.toSwapCurrencyStatus ?: return Either.Left(GetFeeError.UnknownError)
+            val amount = lastAmount.value.parseBigDecimalOrNull() ?: return Either.Left(GetFeeError.UnknownError)
+
             val shouldTransferInsteadOfSwap = swapTransferInteractor.shouldTransferInsteadOfSwap(
                 fromSwapCurrencyStatus.currency,
                 toSwapCurrencyStatus.currency,
@@ -2243,7 +2244,7 @@ internal class SwapModel @Inject constructor(
                 return swapTransferInteractor.loadFeeExtended(
                     fromSwapCurrencyStatus = fromSwapCurrencyStatus,
                     toSwapCurrencyStatus = toSwapCurrencyStatus,
-                    fromTokenAmount = lastAmount.value,
+                    fromTokenAmount = amount,
                 )
             }
             val quoteState = dataState.getCurrentLoadedSwapState() ?: return Either.Left(GetFeeError.UnknownError)
@@ -2252,8 +2253,7 @@ internal class SwapModel @Inject constructor(
                 return Either.Left(GetFeeError.UnknownError)
             }
 
-            val amountDecimal = lastAmount.value.parseBigDecimalOrNull() ?: return Either.Left(GetFeeError.UnknownError)
-            val swapAmount = SwapAmount(amountDecimal, fromSwapCurrencyStatus.currency.decimals)
+            val swapAmount = SwapAmount(amount, fromSwapCurrencyStatus.currency.decimals)
 
             // DEX path requires a SwapDataModel.
             val swapDataForCall = when (quoteState.swapProvider.type) {