Updated on 2026-08-14

data/onramp/src/main/java/com/tangem/data/onramp/DefaultOnrampRepository.kt

@@ -385,6 +385,9 @@ internal class DefaultOnrampRepository(
                     },
                 )
             }
+
+            if (onrampProviders.isEmpty()) throw OnrampPairsError.PairsNotFound
+
             OnrampPair(onrampProviders)
         }
         pairsStore.store(PAIRS_KEY, onrampPairs)

features/onramp/impl/src/main/kotlin/com/tangem/features/onramp/main/entity/factory/OnrampStateFactory.kt

@@ -74,7 +74,7 @@ internal class OnrampStateFactory(
         )
     }
 
-    private fun getErrorState(errorCode: String? = null): OnrampMainComponentUM {
+    fun getErrorState(errorCode: String? = null): OnrampMainComponentUM {
         val state = currentStateProvider()
         val endButton = state.topBarConfig.endButtonUM.copy(enabled = true)
 
@@ -84,6 +84,7 @@ internal class OnrampStateFactory(
                 buyButtonConfig = state.buyButtonConfig.copy(enabled = false),
                 amountBlockState = state.amountBlockState.copy(
                     amountFieldModel = state.amountBlockState.amountFieldModel.copy(isError = true),
+                    secondaryFieldModel = OnrampAmountSecondaryFieldUM.Content(TextReference.EMPTY),
                 ),
                 providerBlockState = OnrampProviderBlockUM.Empty,
                 errorNotification = NotificationUM.Warning.OnrampErrorNotification(

features/onramp/impl/src/main/kotlin/com/tangem/features/onramp/main/entity/factory/amount/OnrampAmountFieldChangeConverter.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.KeyboardType
 import com.tangem.core.ui.extensions.TextReference
+import com.tangem.core.ui.utils.parseBigDecimalOrNull
 import com.tangem.features.onramp.main.entity.OnrampAmountSecondaryFieldUM
 import com.tangem.features.onramp.main.entity.OnrampMainComponentUM
 import com.tangem.features.onramp.main.entity.OnrampProviderBlockUM
@@ -24,7 +25,7 @@ internal class OnrampAmountFieldChangeConverter(
 
         val amountState = state.amountBlockState
         val amountTextField = amountState.amountFieldModel
-        val fiatDecimal = value.toBigDecimalOrNull() ?: BigDecimal.ZERO
+        val fiatDecimal = value.parseBigDecimalOrNull() ?: BigDecimal.ZERO
         val isDoneActionEnabled = !fiatDecimal.isNullOrZero()
         val amountFieldModel = amountState.amountFieldModel.copy(
             fiatValue = value,

features/onramp/impl/src/main/kotlin/com/tangem/features/onramp/main/entity/factory/amount/OnrampAmountStateFactory.kt

@@ -1,6 +1,7 @@
 package com.tangem.features.onramp.main.entity.factory.amount
 
 import com.tangem.core.analytics.api.AnalyticsEventHandler
+import com.tangem.core.ui.extensions.TextReference
 import com.tangem.core.ui.extensions.resourceReference
 import com.tangem.core.ui.extensions.stringReference
 import com.tangem.core.ui.extensions.wrappedList
@@ -144,6 +145,23 @@ internal class OnrampAmountStateFactory(
         )
     }
 
+    fun getAmountSecondaryResetState(): OnrampMainComponentUM {
+        val currentState = currentStateProvider()
+        if (currentState !is OnrampMainComponentUM.Content) return currentState
+
+        val amountState = currentState.amountBlockState
+
+        if (amountState.secondaryFieldModel is OnrampAmountSecondaryFieldUM.Content) return currentState
+
+        return currentState.copy(
+            amountBlockState = amountState.copy(
+                secondaryFieldModel = OnrampAmountSecondaryFieldUM.Content(
+                    amount = TextReference.EMPTY,
+                ),
+            ),
+        )
+    }
+
     private fun OnrampQuote.toProviderBlockState(isBestRate: Boolean): OnrampProviderBlockUM {
         return OnrampProviderBlockUM.Content(
             paymentMethod = paymentMethod,

features/onramp/impl/src/main/kotlin/com/tangem/features/onramp/main/model/OnrampMainComponentModel.kt

@@ -157,7 +157,11 @@ internal class OnrampMainComponentModel @Inject constructor(
     }
 
     private suspend fun updatePairsAndQuotes() {
-        fetchPairsUseCase.invoke(params.cryptoCurrency).onLeft(::handleOnrampError)
+        _state.update { amountStateFactory.getAmountSecondaryLoadingState() }
+        fetchPairsUseCase.invoke(params.cryptoCurrency).fold(
+            ifLeft = ::handleOnrampError,
+            ifRight = { _state.update { amountStateFactory.getAmountSecondaryResetState() } },
+        )
         startLoadingQuotes()
     }
 
@@ -195,39 +199,7 @@ internal class OnrampMainComponentModel @Inject constructor(
             .onEach { maybeQuotes ->
                 maybeQuotes.fold(
                     ifLeft = ::handleOnrampError,
-                    ifRight = { quotes ->
+                    ifRight = ::handleQuoteResult,
-                        quotes.filterIsInstance<OnrampQuote.Error>().forEach { errorState ->
-                            sendOnrampErrorAnalytic(errorState.error)
-                        }
-                        val quote = quotes.firstOrNull() ?: return@onEach
-
-                        val bestProvider = quote as? OnrampQuote.Data
-                        val isMultipleQuotes = !quotes.isSingleItem()
-                        val isOtherQuotesHasData = quotes
-                            .filter { it.paymentMethod == quote.paymentMethod }
-                            .filterNot { it == bestProvider }
-                            .any { it is OnrampQuote.Data }
-                        val hasBestProvider = isMultipleQuotes && isOtherQuotesHasData
-
-                        val isBestProvider = quote == bestProvider && hasBestProvider
-
-                        if (quote is OnrampQuote.Data && lastAmount.value != quote.fromAmount.value) {
-                            lastAmount.value = quote.fromAmount.value
-                            analyticsEventHandler.send(
-                                OnrampAnalyticsEvent.ProviderCalculated(
-                                    providerName = quote.provider.info.name,
-                                    tokenSymbol = params.cryptoCurrency.symbol,
-                                    paymentMethod = quote.paymentMethod.name,
-                                ),
-                            )
-                        }
-                        _state.update {
-                            amountStateFactory.getAmountSecondaryUpdatedState(
-                                quote = quote,
-                                isBestRate = isBestProvider,
-                            )
-                        }
-                    },
                 )
             }
             .launchIn(modelScope)
@@ -296,6 +268,46 @@ internal class OnrampMainComponentModel @Inject constructor(
         super.onDestroy()
     }
 
+    private fun handleQuoteResult(quotes: List<OnrampQuote>) {
+        quotes.filterIsInstance<OnrampQuote.Error>().forEach { errorState ->
+            sendOnrampErrorAnalytic(errorState.error)
+        }
+
+        val quote = quotes.firstOrNull()
+
+        if (quote == null) {
+            _state.update { stateFactory.getErrorState() }
+            return
+        }
+
+        val bestProvider = quote as? OnrampQuote.Data
+        val isMultipleQuotes = !quotes.isSingleItem()
+        val isOtherQuotesHasData = quotes
+            .filter { it.paymentMethod == quote.paymentMethod }
+            .filterNot { it == bestProvider }
+            .any { it is OnrampQuote.Data }
+        val hasBestProvider = isMultipleQuotes && isOtherQuotesHasData
+
+        val isBestProvider = quote == bestProvider && hasBestProvider
+
+        if (quote is OnrampQuote.Data && lastAmount.value != quote.fromAmount.value) {
+            lastAmount.value = quote.fromAmount.value
+            analyticsEventHandler.send(
+                OnrampAnalyticsEvent.ProviderCalculated(
+                    providerName = quote.provider.info.name,
+                    tokenSymbol = params.cryptoCurrency.symbol,
+                    paymentMethod = quote.paymentMethod.name,
+                ),
+            )
+        }
+        _state.update {
+            amountStateFactory.getAmountSecondaryUpdatedState(
+                quote = quote,
+                isBestRate = isBestProvider,
+            )
+        }
+    }
+
     private fun showDemoWarning() {
         val alertUM = AlertDemoModeUM(onConfirmClick = {})