Updated on 2026-08-14

features/swap-v2/impl/build.gradle.kts

@@ -23,6 +23,7 @@ dependencies {
     implementation(projects.features.swapV2.api)
     implementation(projects.features.manageTokens.api)
     implementation(projects.features.sendV2.api)
+    implementation(projects.features.commonFeatures.api)
 
     /** Core */
     implementation(projects.core.decompose)

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/entity/SwapAmountUM.kt

@@ -86,6 +86,7 @@ sealed class SwapAmountFieldUM {
         val subtitleEllipsisLeft: TextEllipsis,
         val subtitleEllipsisRight: TextEllipsis,
         val isClickEnabled: Boolean,
+        val shouldShowApproximatePrefix: Boolean,
     ) : SwapAmountFieldUM()
 }
 
@@ -95,7 +96,6 @@ data class PriceImpact(
     val amountSignificance: AmountSignificance,
     val type: Type,
 ) {
-
     enum class Type {
         NONE, LOW, MEDIUM, HIGH
     }

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/SwapAmountModel.kt

@@ -125,6 +125,7 @@ internal class SwapAmountModel @Inject constructor(
     private val amountAnalyticsSender = SwapAmountAnalyticsSender(analyticsEventHandler)
 
     private var autoUpdateSubscriberJob: Job? = null
+    private var navigationJob: Job? = null
 
     val uiState: StateFlow<SwapAmountUM>
         field = MutableStateFlow(params.amountUM)
@@ -139,7 +140,6 @@ internal class SwapAmountModel @Inject constructor(
                 ?: UserCountry.Other(Locale.getDefault().country)
             isShowBestRateAnimation = swapBestRateAnimationStore.getSyncOrNull()
         }
-        configAmountNavigation()
         subscribeOnCryptoCurrencyStatusFlow()
         subscribeOnAmountUpdateTriggerUpdates()
         observeChooseSelectToken()
@@ -156,6 +156,7 @@ internal class SwapAmountModel @Inject constructor(
         } else {
             QUOTES_UPDATE_DELAY
         }
+        configAmountNavigation()
         quoteTaskScheduler.scheduleTask(
             scope = modelScope,
             task = loadQuotesTask(initialDelay = initialDelay),
@@ -166,6 +167,7 @@ internal class SwapAmountModel @Inject constructor(
     fun onStop() {
         quoteTaskScheduler.cancelTask()
         autoUpdateSubscriberJob?.cancel()
+        navigationJob?.cancel()
     }
 
     override fun onDestroy() {
@@ -901,7 +903,8 @@ internal class SwapAmountModel @Inject constructor(
 
     private fun configAmountNavigation() {
         val params = params as? SwapAmountComponentParams.AmountParams ?: return
-        combine(
+        navigationJob?.cancel()
+        navigationJob = combine(
             flow = uiState,
             flow2 = params.currentRoute,
             transform = { state, route -> state to route },

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/converter/SwapAmountFieldConverter.kt

@@ -6,7 +6,7 @@ import com.tangem.common.ui.amountScreen.converters.AmountAccountConverter
 import com.tangem.common.ui.amountScreen.converters.AmountStateConverter
 import com.tangem.common.ui.amountScreen.converters.MaxEnterAmountConverter
 import com.tangem.common.ui.amountScreen.models.AmountParameters
-import com.tangem.core.ui.components.currency.icon.converter.CryptoCurrencyToIconStateConverter
+import com.tangem.common.ui.components.currency.icon.converter.CryptoCurrencyToIconStateConverter
 import com.tangem.core.ui.extensions.*
 import com.tangem.domain.appcurrency.model.AppCurrency
 import com.tangem.domain.models.account.Account
@@ -39,6 +39,7 @@ internal class SwapAmountFieldConverter(
         isSelected: Boolean,
         isAmountEmpty: Boolean = true,
         displayAmount: BigDecimal? = null,
+        showApproximatePrefix: Boolean = false,
     ): SwapAmountFieldUM {
         val walletTitle = if (isSingleWallet) {
             resourceReference(R.string.send_from_title)
@@ -60,6 +61,7 @@ internal class SwapAmountFieldConverter(
             subtitleRight = subtitles.subtitleRight,
             subtitleEllipsisRight = subtitles.subtitleEllipsisRight,
             isClickEnabled = true,
+            shouldShowApproximatePrefix = showApproximatePrefix,
             amountField = AmountStateConverter(
                 clickIntents = clickIntents,
                 appCurrency = appCurrency,
@@ -77,7 +79,7 @@ internal class SwapAmountFieldConverter(
                         walletTitle = walletTitle,
                         prefixText = when {
                             swapAmountType.isEnteringField() -> resourceReference(R.string.common_from)
-                            else -> TextReference.Companion.EMPTY
+                            else -> TextReference.EMPTY
                         },
                     ).convert(account)
                 },

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountChangeAmountTypeTransformer.kt

@@ -35,6 +35,8 @@ internal class SwapAmountChangeAmountTypeTransformer(
                     field = field,
                     cryptoCurrencyStatus = prevState.secondaryCryptoCurrencyStatus,
                     isAmountEmpty = true,
+                ).copy(
+                    shouldShowApproximatePrefix = swapRateType == ExpressRateType.Float,
                 )
             } ?: prevState.secondaryAmount
         } else {

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountSecondaryReadyStateTransformer.kt

@@ -62,6 +62,7 @@ internal class SwapAmountSecondaryReadyStateTransformer(
                 swapAmountType = SwapAmountType.To,
                 cryptoCurrencyStatus = secondaryCryptoCurrencyStatus,
                 isSelected = prevState.selectedAmountType == SwapAmountType.To,
+                showApproximatePrefix = selectedRateType == ExpressRateType.Float,
             ),
             secondaryCryptoCurrencyStatus = secondaryCryptoCurrencyStatus,
             swapCurrencies = swapCurrencies,

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountSelectQuoteTransformer.kt

@@ -64,7 +64,9 @@ internal class SwapAmountSelectQuoteTransformer(
         val hasInsufficientFundsForFixed = hasInsufficientFundsForFixed(prevState, quoteContent)
 
         return prevState.copy(
-            isPrimaryButtonEnabled = quoteUM is SwapQuoteUM.Content && !hasInsufficientFundsForFixed,
+            isPrimaryButtonEnabled = quoteUM is SwapQuoteUM.Content &&
+                !hasInsufficientBalance(prevState, quoteContent, newPrimaryAmount) &&
+                !hasInsufficientFundsForFixed,
             selectedQuote = quoteUM,
             isShowFCAWarning = isNeedApplyFCARestrictions && quoteUM.provider?.isRestrictedByFCA() == true,
             primaryAmount = newPrimaryAmount,
@@ -214,4 +216,22 @@ internal class SwapAmountSelectQuoteTransformer(
             prevState.secondaryAmount
         }
     }
+
+    private fun hasInsufficientBalance(
+        prevState: SwapAmountUM.Content,
+        quoteContent: SwapQuoteUM.Content?,
+        newPrimaryAmount: SwapAmountFieldUM,
+    ): Boolean {
+        if (quoteContent == null) return false
+
+        val primaryBalance = prevState.primaryCryptoCurrencyStatus.value.amount ?: return false
+        val fromAmount = if (prevState.selectedAmountType == SwapAmountType.To) {
+            quoteContent.fromAmount
+        } else {
+            val amountData = (newPrimaryAmount as? SwapAmountFieldUM.Content)?.amountField as? AmountState.Data
+            amountData?.amountTextField?.cryptoAmount?.value
+        }
+
+        return fromAmount != null && fromAmount > primaryBalance
+    }
 }

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/ui/SwapAmountBlockContent.kt

@@ -40,6 +40,7 @@ import com.tangem.core.ui.res.TangemThemePreview
 import com.tangem.domain.swap.models.SwapAmountType
 import com.tangem.features.swap.v2.impl.R
 import com.tangem.features.swap.v2.impl.amount.entity.PriceImpact
+import com.tangem.features.swap.v2.impl.amount.entity.SwapAmountFieldUM
 import com.tangem.features.swap.v2.impl.amount.entity.SwapAmountUM
 import com.tangem.features.swap.v2.impl.amount.ui.preview.SwapAmountContentPreview
 import com.tangem.features.swap.v2.impl.chooseprovider.ui.SwapChooseProviderContent
@@ -120,11 +121,13 @@ private fun ConstraintLayoutScope.SwapAmountBlock(
             end.linkTo(parent.end)
         },
     )
+    val secondaryContent = amountUM.secondaryAmount as? SwapAmountFieldUM.Content
     AmountBlockV2(
         amountState = (amountUM.secondaryAmount.amountField as? AmountState.Data)?.copy(
             accountTitleUM = AccountTitleUM.Text(resourceReference(R.string.send_with_swap_recipient_amount_title)),
             availableBalanceCrypto = TextReference.EMPTY,
         ) ?: amountUM.secondaryAmount.amountField,
+        shouldShowApproximatePrefix = secondaryContent?.shouldShowApproximatePrefix == true,
         isClickDisabled = true,
         isEditingDisabled = false,
         modifier = Modifier.constrainAs(toAmountRef) {

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/ui/preview/SwapAmountContentPreview.kt

@@ -33,7 +33,6 @@ internal data object SwapAmountContentPreview {
                     value = "bitcoin",
                     derivationPath = Network.DerivationPath.None,
                 ),
-                backendId = "bitcoin",
                 name = "Bitcoin",
                 currencySymbol = "BTC",
                 derivationPath = Network.DerivationPath.None,
@@ -109,6 +108,7 @@ internal data object SwapAmountContentPreview {
             isClickEnabled = false,
             subtitleEllipsisLeft = TextEllipsis.OffsetEnd(3),
             subtitleEllipsisRight = TextEllipsis.OffsetEnd(1),
+            shouldShowApproximatePrefix = false,
         ),
         secondaryAmount = SwapAmountFieldUM.Content(
             amountType = SwapAmountType.To,
@@ -121,6 +121,7 @@ internal data object SwapAmountContentPreview {
             isClickEnabled = false,
             subtitleEllipsisLeft = TextEllipsis.End,
             subtitleEllipsisRight = TextEllipsis.End,
+            shouldShowApproximatePrefix = true,
         ),
         appCurrency = AppCurrency.Default,
         swapDirection = SwapDirection.Direct,

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/choosetoken/fromSupported/model/transformers/SwapChooseContentStateTransformer.kt

@@ -1,6 +1,6 @@
 package com.tangem.features.swap.v2.impl.choosetoken.fromSupported.model.transformers
 
-import com.tangem.core.ui.extensions.iconResId
+import com.tangem.common.ui.extensions.iconResId
 import com.tangem.core.ui.extensions.stringReference
 import com.tangem.domain.express.models.ExpressRateType
 import com.tangem.domain.models.currency.CryptoCurrency
@@ -29,7 +29,7 @@ internal class SwapChooseContentStateTransformer(
 
             val isMain = cryptoCurrency is CryptoCurrency.Coin
             val subtitle = when {
-                BlockchainUtils.isL2Network(networkId = network.backendId) -> MAIN_NETWORK_L2_TYPE_NAME
+                BlockchainUtils.isL2Network(networkId = network.rawId) -> MAIN_NETWORK_L2_TYPE_NAME
                 isMain -> MAIN_NETWORK_TYPE_NAME
                 network.standardType !is Network.StandardType.Unspecified -> network.standardType.name
                 else -> ""

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/common/SwapAlertFactory.kt

@@ -75,8 +75,7 @@ internal class SwapAlertFactory @Inject constructor(
         saveBlockchainErrorUseCase(
             error = BlockchainErrorInfo(
                 errorMessage = errorMessage.orEmpty(),
-                blockchainId = cryptoCurrency?.network?.rawId.orEmpty(),
-                derivationPath = cryptoCurrency?.network?.derivationPath?.value.orEmpty(),
+                networkId = cryptoCurrency?.network?.id,
                 destinationAddress = confirmData?.enteredDestination.orEmpty(),
                 tokenSymbol = confirmData?.toCryptoCurrencyStatus?.currency?.symbol.orEmpty(),
                 amount = confirmData?.enteredFromAmount?.toString().orEmpty(),

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/sendviaswap/confirm/model/SendWithSwapConfirmModel.kt

@@ -17,7 +17,6 @@ import com.tangem.core.decompose.di.ModelScoped
 import com.tangem.core.decompose.model.Model
 import com.tangem.core.decompose.model.ParamsContainer
 import com.tangem.core.decompose.navigation.Router
-import com.tangem.core.ui.HoldToConfirmButtonFeatureToggles
 import com.tangem.core.ui.extensions.TextReference
 import com.tangem.core.ui.extensions.resourceReference
 import com.tangem.domain.account.status.usecase.GetAccountCurrencyByAddressUseCase
@@ -100,7 +99,6 @@ internal class SendWithSwapConfirmModel @Inject constructor(
     private val feeSelectorReloadTrigger: FeeSelectorReloadTrigger,
     private val swapAlertFactory: SwapAlertFactory,
     private val analyticsEventHandler: AnalyticsEventHandler,
-    private val holdToConfirmButtonFeatureToggles: HoldToConfirmButtonFeatureToggles,
     swapTransactionSenderFactory: SwapTransactionSender.Factory,
     paramsContainer: ParamsContainer,
 ) : Model(), FeeSelectorModelCallback, SendNotificationsComponent.ModelCallback {
@@ -574,8 +572,7 @@ internal class SendWithSwapConfirmModel @Inject constructor(
             val confirmUM = state.confirmUM
             val isContent = confirmUM is ConfirmUM.Content
             val isReadyToSend = isContent && !confirmUM.isTransactionInProcess
-            val isHoldToConfirm = holdToConfirmButtonFeatureToggles.isHoldToConfirmEnabled &&
-                params.userWallet.isHotWallet && isContent
+            val isHoldToConfirm = params.userWallet.isHotWallet && isContent
             params.callback.onResult(
                 route = SendWithSwapRoute.Confirm,
                 sendWithSwapUM = state.copy(

features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/sendviaswap/confirm/model/SwapTransactionSender.kt

@@ -26,12 +26,11 @@ import com.tangem.domain.utils.convertToSdkAmount
 import com.tangem.features.send.v2.api.subcomponents.feeSelector.utils.FeeCalculationUtils
 import com.tangem.features.swap.v2.impl.common.ConfirmData
 import com.tangem.features.swap.v2.impl.common.entity.SwapQuoteUM
+import com.tangem.utils.logging.TangemLogger
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
 import dagger.assisted.AssistedInject
-import com.tangem.utils.logging.TangemLogger
 import java.math.BigDecimal
-import java.math.RoundingMode
 
 @Suppress("LongParameterList")
 internal class SwapTransactionSender @AssistedInject constructor(
@@ -91,7 +90,7 @@ internal class SwapTransactionSender @AssistedInject constructor(
         val feeValue = confirmData.fee?.amount?.value ?: return
         val destination = confirmData.enteredDestination ?: return
 
-        val (swapDataRequestAmount, swapDataRequestCurrency) = when (confirmData.amountType) {
+        val swapDataRequestAmount = when (confirmData.amountType) {
             SwapAmountType.From -> {
                 val amountValue = confirmData.enteredFromAmount ?: return
                 val subtracted = FeeCalculationUtils.checkAndCalculateSubtractedAmount(
@@ -101,11 +100,11 @@ internal class SwapTransactionSender @AssistedInject constructor(
                     feeValue = feeValue,
                     reduceAmountBy = confirmData.reduceAmountBy,
                 )
-                subtracted to fromStatus
+                subtracted
             }
             SwapAmountType.To -> {
                 val amountValue = confirmData.enteredToAmount ?: return
-                amountValue to toStatus
+                amountValue
             }
         }
 
@@ -117,7 +116,7 @@ internal class SwapTransactionSender @AssistedInject constructor(
         val swapData = getSwapDataUseCase(
             userWallet = userWallet,
             fromCryptoCurrencyStatus = fromStatus,
-            amount = swapDataRequestAmount.toStringWithRightOffset(swapDataRequestCurrency.currency.decimals),
+            amount = swapDataRequestAmount,
             amountType = confirmData.amountType,
             toCryptoCurrency = toStatus.currency,
             toAddress = destination,
@@ -208,7 +207,8 @@ internal class SwapTransactionSender @AssistedInject constructor(
             ifRight = { txHash ->
                 val timestamp = System.currentTimeMillis()
                 swapTransactionSentUseCase.invoke(
-                    userWallet = userWallet,
+                    fromUserWallet = userWallet,
+                    toUserWallet = userWallet,
                     fromCryptoCurrencyStatus = fromStatus,
                     toCryptoCurrencyStatus = toStatus,
                     fromAccount = fromAccount,
@@ -225,10 +225,6 @@ internal class SwapTransactionSender @AssistedInject constructor(
         )
     }
 
-    private fun BigDecimal.toStringWithRightOffset(decimals: Int): String {
-        return setScale(decimals, RoundingMode.HALF_DOWN).movePointRight(decimals).toPlainString()
-    }
-
     @AssistedFactory
     interface Factory {
         fun create(userWallet: UserWallet): SwapTransactionSender