Updated on 2026-08-14

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

@@ -126,6 +126,7 @@ 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)
@@ -140,7 +141,6 @@ internal class SwapAmountModel @Inject constructor(
                 ?: UserCountry.Other(Locale.getDefault().country)
             isShowBestRateAnimation = swapBestRateAnimationStore.getSyncOrNull()
         }
-        configAmountNavigation()
         subscribeOnCryptoCurrencyStatusFlow()
         subscribeOnAmountUpdateTriggerUpdates()
         observeChooseSelectToken()
@@ -153,6 +153,7 @@ internal class SwapAmountModel @Inject constructor(
 
     fun onStart() {
         val isDelayFirst = params !is SwapAmountComponentParams.AmountBlockParams
+        configAmountNavigation()
         quoteTaskScheduler.scheduleTask(
             scope = modelScope,
             task = loadQuotesTask(isDelayFirst = isDelayFirst),
@@ -163,6 +164,7 @@ internal class SwapAmountModel @Inject constructor(
     fun onStop() {
         quoteTaskScheduler.cancelTask()
         autoUpdateSubscriberJob?.cancel()
+        navigationJob?.cancel()
     }
 
     override fun onDestroy() {
@@ -880,7 +882,8 @@ 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/transformers/SwapAmountSelectQuoteTransformer.kt

@@ -62,7 +62,8 @@ internal class SwapAmountSelectQuoteTransformer(
         )
 
         return prevState.copy(
-            isPrimaryButtonEnabled = quoteUM is SwapQuoteUM.Content,
+            isPrimaryButtonEnabled = quoteUM is SwapQuoteUM.Content &&
+                !hasInsufficientBalance(prevState, quoteContent, newPrimaryAmount),
             selectedQuote = quoteUM,
             isShowFCAWarning = isNeedApplyFCARestrictions && quoteUM.provider?.isRestrictedByFCA() == true,
             primaryAmount = newPrimaryAmount,
@@ -202,4 +203,22 @@ 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/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,

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

@@ -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(