Updated on 2026-08-14

app/src/main/java/com/tangem/tap/domain/TangemSdkManager.kt

@@ -40,10 +40,9 @@ import com.tangem.tap.domain.tasks.product.ScanProductTask
 import com.tangem.tap.domain.tokens.UserTokensRepository
 import com.tangem.wallet.R
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.isActive
+import kotlinx.coroutines.suspendCancellableCoroutine
 import kotlinx.coroutines.withContext
 import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 
 class TangemSdkManager(private val tangemSdk: TangemSdk, private val context: Context) {
 
@@ -68,6 +67,7 @@ class TangemSdkManager(private val tangemSdk: TangemSdk, private val context: Co
         cardId: String? = null,
         additionalBlockchainsToDerive: Collection<Blockchain>? = null,
         messageRes: Int? = null,
+        allowsRequestAccessCodeFromRepository: Boolean = false,
     ): CompletionResult<ScanResponse> {
         val message = Message(context.getString(messageRes ?: R.string.initial_message_scan_header))
         return runTaskAsyncReturnOnMain(
@@ -75,6 +75,7 @@ class TangemSdkManager(private val tangemSdk: TangemSdk, private val context: Co
                 card = null,
                 userTokensRepository = userTokensRepository,
                 additionalBlockchainsToDerive = additionalBlockchainsToDerive,
+                allowsRequestAccessCodeFromRepository = allowsRequestAccessCodeFromRepository,
             ),
             cardId = cardId,
             initialMessage = message,
@@ -195,9 +196,9 @@ class TangemSdkManager(private val tangemSdk: TangemSdk, private val context: Co
         accessCode: String? = null,
     ): CompletionResult<T> =
         withContext(Dispatchers.Main) {
-            suspendCoroutine { continuation ->
+            suspendCancellableCoroutine { continuation ->
                 tangemSdk.startSessionWithRunnable(runnable, cardId, initialMessage, accessCode) { result ->
-                    if (continuation.context.isActive) continuation.resume(result)
+                    if (continuation.isActive) continuation.resume(result)
                 }
             }
         }

app/src/main/java/com/tangem/tap/domain/scanCard/ScanCardProcessor.kt

@@ -1,6 +1,5 @@
 package com.tangem.tap.domain.scanCard
 
-import com.tangem.blockchain.common.Blockchain
 import com.tangem.common.core.TangemError
 import com.tangem.common.core.TangemSdkError
 import com.tangem.common.doOnFailure
@@ -46,7 +45,6 @@ import kotlinx.coroutines.launch
 object ScanCardProcessor {
     suspend fun scan(
         analyticsEvent: AnalyticsEvent? = null,
-        additionalBlockchainsToDerive: Collection<Blockchain>? = null,
         cardId: String? = null,
         onProgressStateChange: suspend (showProgress: Boolean) -> Unit = {},
         onScanStateChange: suspend (scanInProgress: Boolean) -> Unit = {},
@@ -63,7 +61,6 @@ object ScanCardProcessor {
         val result = tangemSdkManager.scanProduct(
             userTokensRepository = userTokensRepository,
             cardId = cardId,
-            additionalBlockchainsToDerive = additionalBlockchainsToDerive,
         )
 
         store.dispatchOnMain(GlobalAction.ScanFailsCounter.ChooseBehavior(result))

app/src/main/java/com/tangem/tap/domain/tasks/product/ScanProductTask.kt

@@ -49,11 +49,9 @@ class ScanProductTask(
     val card: Card? = null,
     private val userTokensRepository: UserTokensRepository?,
     private val additionalBlockchainsToDerive: Collection<Blockchain>? = null,
+    override val allowsRequestAccessCodeFromRepository: Boolean = false,
 ) : CardSessionRunnable<ScanResponse> {
 
-    override val allowsRequestAccessCodeFromRepository: Boolean
-        get() = !additionalBlockchainsToDerive.isNullOrEmpty()
-
     override fun run(
         session: CardSession,
         callback: (result: CompletionResult<ScanResponse>) -> Unit,

app/src/main/java/com/tangem/tap/features/details/redux/DetailsMiddleware.kt

@@ -68,7 +68,10 @@ class DetailsMiddleware {
             }
             DetailsAction.ScanCard -> {
                 scope.launch {
-                    tangemSdkManager.scanProduct(userTokensRepository)
+                    tangemSdkManager.scanProduct(
+                        userTokensRepository = userTokensRepository,
+                        allowsRequestAccessCodeFromRepository = true,
+                    )
                         .doOnSuccess { scanResponse ->
                             val currentUserWalletId = state.scanResponse
                                 ?.let { UserWalletIdBuilder.scanResponse(it).build() }

app/src/main/java/com/tangem/tap/features/wallet/redux/middlewares/MultiWalletMiddleware.kt

@@ -5,6 +5,7 @@ import com.tangem.blockchain.common.Token
 import com.tangem.blockchain.common.WalletManager
 import com.tangem.common.doOnSuccess
 import com.tangem.common.extensions.guard
+import com.tangem.common.flatMap
 import com.tangem.core.analytics.Analytics
 import com.tangem.tap.common.analytics.events.AnalyticsParam
 import com.tangem.tap.common.analytics.events.Token.ButtonRemoveToken
@@ -20,7 +21,6 @@ import com.tangem.tap.common.redux.navigation.NavigationAction
 import com.tangem.tap.domain.TapError
 import com.tangem.tap.domain.extensions.makeWalletManagerForApp
 import com.tangem.tap.domain.model.UserWallet
-import com.tangem.tap.domain.scanCard.ScanCardProcessor
 import com.tangem.tap.domain.tokens.models.BlockchainNetwork
 import com.tangem.tap.features.demo.DemoHelper
 import com.tangem.tap.features.demo.isDemoCard
@@ -32,6 +32,7 @@ import com.tangem.tap.features.wallet.redux.models.WalletDialog
 import com.tangem.tap.features.wallet.redux.reducers.toWallet
 import com.tangem.tap.scope
 import com.tangem.tap.store
+import com.tangem.tap.tangemSdkManager
 import com.tangem.tap.userTokensRepository
 import com.tangem.tap.userWalletsListManager
 import com.tangem.tap.walletCurrenciesManager
@@ -193,24 +194,26 @@ class MultiWalletMiddleware {
         state: WalletState?,
     ) = scope.launch(Dispatchers.Default) {
         dispatchOnMain(WalletAction.MultiWallet.ScheduleCheckForMissingDerivation)
-        ScanCardProcessor.scan(
-            analyticsEvent = null,
+        tangemSdkManager.scanProduct(
             cardId = selectedUserWallet.cardId,
+            userTokensRepository = userTokensRepository,
             additionalBlockchainsToDerive = state?.missingDerivations?.map { it.blockchain },
-        ) { scanResponse ->
-            userWalletsListManager.update(
-                userWalletId = selectedUserWallet.walletId,
-                update = { userWallet ->
-                    userWallet.copy(
-                        scanResponse = scanResponse,
-                    )
-                },
-            )
-                .doOnSuccess { updatedUserWallet ->
-                    store.dispatchOnMain(WalletAction.MultiWallet.AddMissingDerivations(emptyList()))
-                    store.state.globalState.tapWalletManager.loadData(updatedUserWallet, refresh = true)
-                }
-        }
+            allowsRequestAccessCodeFromRepository = true,
+        )
+            .flatMap { scanResponse ->
+                userWalletsListManager.update(
+                    userWalletId = selectedUserWallet.walletId,
+                    update = { userWallet ->
+                        userWallet.copy(
+                            scanResponse = scanResponse,
+                        )
+                    },
+                )
+            }
+            .doOnSuccess { updatedUserWallet ->
+                store.dispatchOnMain(WalletAction.MultiWallet.AddMissingDerivations(emptyList()))
+                store.state.globalState.tapWalletManager.loadData(updatedUserWallet, refresh = true)
+            }
     }
 
     private fun addDummyBalances(walletManagers: List<WalletManager>) {

app/src/main/java/com/tangem/tap/features/wallet/redux/reducers/MultiWalletReducer.kt

@@ -5,6 +5,7 @@ import com.tangem.blockchain.blockchains.polkadot.ExistentialDepositProvider
 import com.tangem.blockchain.common.AmountType
 import com.tangem.blockchain.common.Token
 import com.tangem.blockchain.common.WalletManager
+import com.tangem.tap.common.extensions.dispatchOnMain
 import com.tangem.tap.common.extensions.dispatchToastNotification
 import com.tangem.tap.common.extensions.getBlockchainTxHistory
 import com.tangem.tap.common.extensions.getTokenTxHistory
@@ -113,14 +114,17 @@ class MultiWalletReducer {
                 val currency = Currency.fromBlockchainNetwork(action.blockchain, action.token)
                 val walletManager = state.getWalletManager(currency)
                 if (walletManager == null) {
-                    if (userWalletsListManager.hasSavedUserWallets) {
-                        store.dispatch(NavigationAction.PopBackTo(screen = AppScreen.Welcome))
+                    val screen = if (userWalletsListManager.hasSavedUserWallets) {
+                        AppScreen.Welcome
                     } else {
-                        store.dispatch(NavigationAction.PopBackTo(screen = AppScreen.Home))
+                        AppScreen.Home
                     }
+                    store.dispatchOnMain(NavigationAction.PopBackTo(screen))
+
                     FirebaseCrashlytics.getInstance().recordException(
                         IllegalStateException("MultiWallet.TokenLoaded: walletManager is null"),
                     )
+
                     store.dispatchToastNotification(R.string.internal_error_wallet_manager_not_found)
                     return state
                 }