Updated on 2026-08-14

app/src/main/java/com/tangem/tap/domain/model/TotalFiatBalance.kt

@@ -6,16 +6,18 @@ import java.math.BigDecimal
  * Represents fiat balance of [WalletStoreModel] list
  * @property amount Amount of the total balance
  * */
-sealed class TotalFiatBalance {
-    open val amount: BigDecimal = BigDecimal.ZERO
+sealed interface TotalFiatBalance {
+    val amount: BigDecimal?
 
-    object Loading : TotalFiatBalance()
+    object Loading : TotalFiatBalance {
+        override val amount: BigDecimal? = null
+    }
 
     data class Error(
-        override val amount: BigDecimal,
-    ) : TotalFiatBalance()
+        override val amount: BigDecimal?,
+    ) : TotalFiatBalance
 
     data class Loaded(
         override val amount: BigDecimal,
-    ) : TotalFiatBalance()
+    ) : TotalFiatBalance
 }

app/src/main/java/com/tangem/tap/domain/model/WalletDataModel.kt

@@ -16,6 +16,7 @@ import java.math.BigDecimal
  * founds will be destroyed. Null if currency don't have existential deposit
  * @param fiatRate Wallet's fiat rate, used to calculate fiat balance. Null if not provided
  * @param isCardSingleToken shows that [Currency] is a card token
+ * @param isCustom shows that currency is a custom
  * */
 data class WalletDataModel(
     val currency: Currency,
@@ -24,6 +25,7 @@ data class WalletDataModel(
     val existentialDeposit: BigDecimal?,
     val fiatRate: BigDecimal?,
     val isCardSingleToken: Boolean,
+    val isCustom: Boolean,
     val historyTransactions: List<TransactionData>?,
 ) {
 
@@ -59,9 +61,7 @@ data class WalletDataModel(
 
     data class NoAccount(
         val amountToCreateAccount: BigDecimal?,
-    ) : Status() {
-        override val isErrorStatus: Boolean = true
-    }
+    ) : Status()
 
     data class Unreachable(
         override val errorMessage: String?,

app/src/main/java/com/tangem/tap/domain/model/builders/WalletStoreBuilder.kt

@@ -2,12 +2,14 @@ package com.tangem.tap.domain.model.builders
 
 import com.tangem.blockchain.blockchains.polkadot.ExistentialDepositProvider
 import com.tangem.blockchain.common.Blockchain
+import com.tangem.blockchain.common.DerivationStyle
 import com.tangem.blockchain.common.Token
 import com.tangem.blockchain.common.WalletManager
 import com.tangem.common.hdWallet.DerivationPath
-import com.tangem.domain.common.util.UserWalletId
+import com.tangem.domain.common.TapWorkarounds.derivationStyle
 import com.tangem.tap.common.extensions.getBlockchainTxHistory
 import com.tangem.tap.common.extensions.getTokenTxHistory
+import com.tangem.tap.domain.model.UserWallet
 import com.tangem.tap.domain.model.WalletDataModel
 import com.tangem.tap.domain.model.WalletStoreModel
 import com.tangem.tap.domain.tokens.models.BlockchainNetwork
@@ -26,23 +28,23 @@ interface WalletStoreBuilder {
 
     companion object {
         operator fun invoke(
-            userWalletId: UserWalletId,
+            userWallet: UserWallet,
             blockchainNetwork: BlockchainNetwork,
         ): BlockchainNetworkWalletStoreBuilder {
-            return BlockchainNetworkWalletStoreBuilderImpl(userWalletId, blockchainNetwork)
+            return BlockchainNetworkWalletStoreBuilderImpl(userWallet, blockchainNetwork)
         }
 
         operator fun invoke(
-            userWalletId: UserWalletId,
+            userWallet: UserWallet,
             walletManager: WalletManager,
         ): WalletMangerWalletStoreBuilder {
-            return WalletMangerWalletStoreBuilderImpl(userWalletId, walletManager)
+            return WalletMangerWalletStoreBuilderImpl(userWallet, walletManager)
         }
     }
 }
 
 private class BlockchainNetworkWalletStoreBuilderImpl(
-    private val userWalletId: UserWalletId,
+    private val userWallet: UserWallet,
     private val blockchainNetwork: BlockchainNetwork,
 ) : WalletStoreBuilder.BlockchainNetworkWalletStoreBuilder {
     private var walletManager: WalletManager? = null
@@ -52,11 +54,12 @@ private class BlockchainNetworkWalletStoreBuilderImpl(
     }
 
     override fun build(): WalletStoreModel {
-        val blockchainWalletData = blockchainNetwork.getBlockchainWalletData(walletManager)
-        val tokensWalletsData = blockchainNetwork.getTokensWalletsData(walletManager)
+        val cardDerivationStyle = userWallet.scanResponse.card.derivationStyle
+        val blockchainWalletData = blockchainNetwork.getBlockchainWalletData(walletManager, cardDerivationStyle)
+        val tokensWalletsData = blockchainNetwork.getTokensWalletsData(walletManager, cardDerivationStyle)
 
         return WalletStoreModel(
-            userWalletId = userWalletId,
+            userWalletId = userWallet.walletId,
             blockchain = blockchainNetwork.blockchain,
             derivationPath = blockchainNetwork.derivationPath?.let { DerivationPath(it) },
             walletsData = listOf(blockchainWalletData) + tokensWalletsData,
@@ -68,7 +71,7 @@ private class BlockchainNetworkWalletStoreBuilderImpl(
 }
 
 private class WalletMangerWalletStoreBuilderImpl(
-    private val userWalletId: UserWalletId,
+    private val userWallet: UserWallet,
     private val walletManager: WalletManager,
 ) : WalletStoreBuilder.WalletMangerWalletStoreBuilder {
 
@@ -78,7 +81,7 @@ private class WalletMangerWalletStoreBuilderImpl(
         val tokenWalletsData = wallet.getTokens().firstOrNull()?.toTokenWalletData(walletManager)
 
         return WalletStoreModel(
-            userWalletId = userWalletId,
+            userWalletId = userWallet.walletId,
             blockchain = wallet.blockchain,
             derivationPath = wallet.publicKey.derivationPath,
             walletsData = listOf(blockchainWalletData) + listOfNotNull(tokenWalletsData),
@@ -89,35 +92,45 @@ private class WalletMangerWalletStoreBuilderImpl(
     }
 }
 
-private fun BlockchainNetwork.getBlockchainWalletData(walletManager: WalletManager?): WalletDataModel {
+private fun BlockchainNetwork.getBlockchainWalletData(
+    walletManager: WalletManager?,
+    cardDerivationStyle: DerivationStyle?,
+): WalletDataModel {
+    val currency = Currency.Blockchain(
+        blockchain = blockchain,
+        derivationPath = derivationPath,
+    )
     return WalletDataModel(
-        currency = Currency.Blockchain(
-            blockchain = blockchain,
-            derivationPath = derivationPath,
-        ),
+        currency = currency,
         status = WalletDataModel.Loading,
         walletAddresses = walletManager?.wallet?.createAddressesData().orEmpty(),
         existentialDeposit = getExistentialDeposit(walletManager),
         fiatRate = null,
         isCardSingleToken = false,
+        isCustom = currency.isCustomCurrency(cardDerivationStyle),
         historyTransactions = walletManager?.getBlockchainTxHistory(),
     )
 }
 
-private fun BlockchainNetwork.getTokensWalletsData(walletManager: WalletManager?): List<WalletDataModel> {
+private fun BlockchainNetwork.getTokensWalletsData(
+    walletManager: WalletManager?,
+    cardDerivationStyle: DerivationStyle?,
+): List<WalletDataModel> {
     return this.tokens
         .map { token ->
+            val currency = Currency.Token(
+                token = token,
+                blockchain = blockchain,
+                derivationPath = derivationPath,
+            )
             WalletDataModel(
-                currency = Currency.Token(
-                    token = token,
-                    blockchain = blockchain,
-                    derivationPath = derivationPath,
-                ),
+                currency = currency,
                 status = WalletDataModel.Loading,
                 walletAddresses = walletManager?.wallet?.createAddressesData().orEmpty(),
                 existentialDeposit = getExistentialDeposit(walletManager),
                 fiatRate = null,
                 isCardSingleToken = walletManager?.cardTokens?.contains(token) ?: false,
+                isCustom = currency.isCustomCurrency(cardDerivationStyle),
                 historyTransactions = walletManager?.getTokenTxHistory(token),
             )
         }
@@ -135,6 +148,7 @@ private fun Blockchain.toBlockchainWalletData(walletManager: WalletManager): Wal
         existentialDeposit = getExistentialDeposit(walletManager),
         fiatRate = null,
         isCardSingleToken = false,
+        isCustom = false,
         historyTransactions = walletManager.getBlockchainTxHistory(),
     )
 }
@@ -152,6 +166,7 @@ private fun Token.toTokenWalletData(walletManager: WalletManager): WalletDataMod
         existentialDeposit = getExistentialDeposit(walletManager),
         fiatRate = null,
         isCardSingleToken = walletManager.cardTokens.contains(this),
+        isCustom = false,
         historyTransactions = walletManager.getTokenTxHistory(this),
     )
 }