From fb2492eabb84f3f29df79e6f4b536a5496dd42c2 Mon Sep 17 00:00:00 2001
From: Tangem <git@tangem.com>
Date: Mon, 13 Apr 2026 11:22:18 +0400
Subject: [PATCH] Updated on 2026-08-14

---
 .../v2/impl/amount/model/SwapAmountModel.kt   | 10 ++--
 .../SwapAmountChangeAmountTypeTransformer.kt  | 51 +++++++++++++++++++
 2 files changed, 56 insertions(+), 5 deletions(-)
 create mode 100644 features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountChangeAmountTypeTransformer.kt

diff --git a/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/SwapAmountModel.kt b/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/SwapAmountModel.kt
index 23ec462f60..ecc249a62b 100644
--- a/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/SwapAmountModel.kt
+++ b/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/SwapAmountModel.kt
@@ -215,13 +215,13 @@ internal class SwapAmountModel @Inject constructor(
             }
         }
 
-        uiState.update { amountUM ->
-            if (amountUM !is SwapAmountUM.Content) return@update amountUM
-            amountUM.copy(
+        uiState.transformerUpdate(
+            SwapAmountChangeAmountTypeTransformer(
                 selectedAmountType = selectedAmountType,
                 swapRateType = newSwapRateType,
-            )
-        }
+                isBalanceHidden = params.isBalanceHidingFlow.value,
+            ),
+        )
         startLoadingQuotesTask(isSilentReload = false)
     }
 
diff --git a/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountChangeAmountTypeTransformer.kt b/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountChangeAmountTypeTransformer.kt
new file mode 100644
index 0000000000..c1fde5d967
--- /dev/null
+++ b/features/swap-v2/impl/src/main/java/com/tangem/features/swap/v2/impl/amount/model/transformers/SwapAmountChangeAmountTypeTransformer.kt
@@ -0,0 +1,51 @@
+package com.tangem.features.swap.v2.impl.amount.model.transformers
+
+import com.tangem.domain.express.models.ExpressRateType
+import com.tangem.domain.swap.models.SwapAmountType
+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.model.converter.SwapAmountUpdateSubtitleConverter
+import com.tangem.utils.transformer.Transformer
+
+internal class SwapAmountChangeAmountTypeTransformer(
+    private val selectedAmountType: SwapAmountType,
+    private val swapRateType: ExpressRateType,
+    private val isBalanceHidden: Boolean,
+) : Transformer<SwapAmountUM> {
+
+    override fun transform(prevState: SwapAmountUM): SwapAmountUM {
+        if (prevState !is SwapAmountUM.Content) return prevState
+
+        val subtitleConverter = SwapAmountUpdateSubtitleConverter(
+            selectedAmountType = selectedAmountType,
+            isBalanceHidden = isBalanceHidden,
+        )
+
+        val newPrimaryAmount = (prevState.primaryAmount as? SwapAmountFieldUM.Content)?.let { field ->
+            subtitleConverter.updateSubtitles(
+                field = field,
+                cryptoCurrencyStatus = prevState.primaryCryptoCurrencyStatus,
+                isAmountEmpty = true,
+            )
+        } ?: prevState.primaryAmount
+
+        val newSecondaryAmount = if (prevState.secondaryCryptoCurrencyStatus != null) {
+            (prevState.secondaryAmount as? SwapAmountFieldUM.Content)?.let { field ->
+                subtitleConverter.updateSubtitles(
+                    field = field,
+                    cryptoCurrencyStatus = prevState.secondaryCryptoCurrencyStatus,
+                    isAmountEmpty = true,
+                )
+            } ?: prevState.secondaryAmount
+        } else {
+            prevState.secondaryAmount
+        }
+
+        return prevState.copy(
+            selectedAmountType = selectedAmountType,
+            swapRateType = swapRateType,
+            primaryAmount = newPrimaryAmount,
+            secondaryAmount = newSecondaryAmount,
+        )
+    }
+}
\ No newline at end of file