Updated on 2026-08-14

features/send-v2/impl/src/main/java/com/tangem/features/send/v2/entrypoint/DefaultSendEntryPointComponent.kt

@@ -1,18 +1,29 @@
 package com.tangem.features.send.v2.entrypoint
 
-import androidx.compose.animation.AnimatedVisibility
-import androidx.compose.animation.fadeIn
-import androidx.compose.animation.fadeOut
+import androidx.compose.foundation.gestures.Orientation
+import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Modifier
-import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.arkivanov.decompose.ComponentContext
+import com.arkivanov.decompose.extensions.compose.stack.Children
+import com.arkivanov.decompose.extensions.compose.stack.animation.fade
+import com.arkivanov.decompose.extensions.compose.stack.animation.plus
+import com.arkivanov.decompose.extensions.compose.stack.animation.slide
+import com.arkivanov.decompose.extensions.compose.stack.animation.stackAnimation
+import com.arkivanov.decompose.extensions.compose.subscribeAsState
+import com.arkivanov.decompose.router.stack.StackNavigation
+import com.arkivanov.decompose.router.stack.childStack
+import com.arkivanov.decompose.router.stack.pop
 import com.tangem.core.decompose.context.AppComponentContext
 import com.tangem.core.decompose.context.child
+import com.tangem.core.decompose.context.childByContext
 import com.tangem.core.decompose.model.getOrCreateModel
+import com.tangem.core.decompose.navigation.inner.InnerRouter
+import com.tangem.core.ui.decompose.ComposableContentComponent
+import com.tangem.features.managetokens.component.ChooseManagedTokensComponent
 import com.tangem.features.send.v2.api.SendComponent
 import com.tangem.features.send.v2.api.SendEntryPointComponent
-import com.tangem.features.send.v2.entrypoint.model.SendEntryPoint
 import com.tangem.features.send.v2.entrypoint.model.SendEntryPointModel
 import com.tangem.features.swap.v2.api.SendWithSwapComponent
 import dagger.assisted.Assisted
@@ -24,9 +35,17 @@ internal class DefaultSendEntryPointComponent @AssistedInject constructor(
     @Assisted private val params: SendEntryPointComponent.Params,
     sendWithSwapComponentFactory: SendWithSwapComponent.Factory,
     sendComponentFactory: SendComponent.Factory,
+    private val chooseManagedTokensComponentFactory: ChooseManagedTokensComponent.Factory,
 ) : SendEntryPointComponent, AppComponentContext by appComponentContext {
 
-    private val model: SendEntryPointModel = getOrCreateModel(params = params)
+    private val stackNavigation = StackNavigation<SendEntryRoute>()
+
+    private val innerRouter = InnerRouter<SendEntryRoute>(
+        stackNavigation = stackNavigation,
+        popCallback = { onChildBack() },
+    )
+
+    private val model: SendEntryPointModel = getOrCreateModel(params = params, router = innerRouter)
 
     private val sendWithSwapComponent = sendWithSwapComponentFactory.create(
         context = child("sendEntrySendWithSwap"),
@@ -46,18 +65,76 @@ internal class DefaultSendEntryPointComponent @AssistedInject constructor(
         ),
     )
 
+    private val childStack = childStack(
+        key = "sendEntryStack",
+        source = stackNavigation,
+        serializer = null,
+        initialConfiguration = SendEntryRoute.Send,
+        handleBackButton = true,
+        childFactory = { configuration, factoryContext ->
+            getChildComponent(
+                configuration = configuration,
+                factoryContext = childByContext(
+                    componentContext = factoryContext,
+                    router = innerRouter,
+                ),
+            )
+        },
+    )
+
     @Composable
     override fun Content(modifier: Modifier) {
-        val sendEntryState by model.sendEntryPointState.collectAsStateWithLifecycle()
+        val childStackValue by childStack.subscribeAsState()
 
-        sendComponent.Content(modifier)
+        Children(
+            stack = childStackValue,
+            animation = stackAnimation { child ->
+                when (child.configuration) {
+                    SendEntryRoute.Send,
+                    SendEntryRoute.SendWithSwap,
+                    -> fade()
+                    is SendEntryRoute.ChooseToken -> slide(orientation = Orientation.Vertical) + fade()
+                }
+            },
+        ) { child ->
+            child.instance.Content(modifier.fillMaxSize())
+        }
+    }
 
-        AnimatedVisibility(
-            visible = sendEntryState == SendEntryPoint.SendWithSwap,
-            enter = fadeIn(),
-            exit = fadeOut(),
-        ) {
-            sendWithSwapComponent.Content(modifier)
+    private fun getChildComponent(
+        configuration: SendEntryRoute,
+        factoryContext: AppComponentContext,
+    ): ComposableContentComponent = when (configuration) {
+        is SendEntryRoute.ChooseToken -> getManagedTokensComponent(
+            componentContext = factoryContext,
+            showSendViaSwapNotification = configuration.showSendViaSwapNotification,
+        )
+        SendEntryRoute.Send -> sendComponent
+        SendEntryRoute.SendWithSwap -> sendWithSwapComponent
+    }
+
+    private fun getManagedTokensComponent(
+        componentContext: ComponentContext,
+        showSendViaSwapNotification: Boolean,
+    ): ChooseManagedTokensComponent {
+        return chooseManagedTokensComponentFactory.create(
+            context = childByContext(componentContext),
+            params = ChooseManagedTokensComponent.Params(
+                userWalletId = params.userWalletId,
+                initialCurrency = params.cryptoCurrency,
+                source = ChooseManagedTokensComponent.Source.SendViaSwap,
+                selectedCurrency = null,
+                showSendViaSwapNotification = showSendViaSwapNotification,
+                callback = model,
+            ),
+        )
+    }
+
+    private fun onChildBack() {
+        if (childStack.value.backStack.isEmpty()) {
+            router.pop()
+        } else {
+            stackNavigation.pop()
         }
     }
 

features/send-v2/impl/src/main/java/com/tangem/features/send/v2/entrypoint/SendEntryRoute.kt

@@ -0,0 +1,11 @@
+package com.tangem.features.send.v2.entrypoint
+
+import com.tangem.core.decompose.navigation.Route
+
+internal sealed class SendEntryRoute : Route {
+    data object Send : SendEntryRoute()
+    data object SendWithSwap : SendEntryRoute()
+    data class ChooseToken(
+        val showSendViaSwapNotification: Boolean,
+    ) : SendEntryRoute()
+}

features/send-v2/impl/src/main/java/com/tangem/features/send/v2/entrypoint/model/SendEntryPointModel.kt

@@ -1,90 +1,74 @@
 package com.tangem.features.send.v2.entrypoint.model
 
-import com.tangem.common.routing.AppRoute
-import com.tangem.common.routing.AppRouter
 import com.tangem.common.ui.notifications.NotificationId
 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.domain.notifications.ShouldShowNotificationUseCase
+import com.tangem.features.managetokens.component.ChooseManagedTokensComponent
 import com.tangem.features.send.v2.api.SendComponent
-import com.tangem.features.send.v2.api.SendEntryPointComponent
+import com.tangem.features.send.v2.entrypoint.SendEntryRoute
 import com.tangem.features.send.v2.subcomponents.amount.SendAmountUpdateTrigger
 import com.tangem.features.swap.v2.api.SendWithSwapComponent
-import com.tangem.features.swap.v2.api.choosetoken.SwapChooseTokenNetworkListener
 import com.tangem.features.swap.v2.api.subcomponents.SwapAmountUpdateTrigger
 import com.tangem.utils.coroutines.CoroutineDispatcherProvider
-import com.tangem.utils.coroutines.JobHolder
-import com.tangem.utils.coroutines.saveIn
 import jakarta.inject.Inject
-import kotlinx.coroutines.flow.*
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 
 @Suppress("LongParameterList")
 @ModelScoped
 internal class SendEntryPointModel @Inject constructor(
-    paramsContainer: ParamsContainer,
     override val dispatchers: CoroutineDispatcherProvider,
-    val appRouter: AppRouter,
-    private val swapChooseTokenNetworkListener: SwapChooseTokenNetworkListener,
+    val router: Router,
     private val sendAmountUpdateTrigger: SendAmountUpdateTrigger,
     private val swapAmountUpdateTrigger: SwapAmountUpdateTrigger,
     private val shouldShowNotificationUseCase: ShouldShowNotificationUseCase,
-) : Model(), SendComponent.ModelCallback, SendWithSwapComponent.ModelCallback {
+) : Model(),
+    SendComponent.ModelCallback,
+    SendWithSwapComponent.ModelCallback,
+    ChooseManagedTokensComponent.ModelCallback {
 
-    private val params: SendEntryPointComponent.Params = paramsContainer.require()
-
-    val sendEntryPointState: StateFlow<SendEntryPoint>
-    field = MutableStateFlow(SendEntryPoint.SendVanilla)
-
-    private var swapChooseTokenListenerJobHolder = JobHolder()
+    private var lastSavedAmount = ""
 
     override fun onConvertToAnotherToken(lastAmount: String) {
+        lastSavedAmount = lastAmount
         modelScope.launch {
             val showSendViaSwapNotification = shouldShowNotificationUseCase(
                 NotificationId.SendViaSwapTokenSelectorNotification.key,
             )
-            appRouter.push(
-                AppRoute.ChooseManagedTokens(
-                    userWalletId = params.userWalletId,
-                    initialCurrency = params.cryptoCurrency,
-                    selectedCurrency = null,
-                    source = AppRoute.ChooseManagedTokens.Source.SendViaSwap,
+            router.push(
+                SendEntryRoute.ChooseToken(
                     showSendViaSwapNotification = showSendViaSwapNotification,
                 ),
             )
-            observeChooseSelectToken(lastAmount)
         }
     }
 
     override fun onCloseSwap(lastAmount: String) {
+        lastSavedAmount = lastAmount
         modelScope.launch {
             if (lastAmount.isNotBlank()) {
                 sendAmountUpdateTrigger.triggerUpdateAmount(lastAmount)
             }
-            triggerScreenUpdate(SendEntryPoint.SendVanilla)
+            router.replaceAll(SendEntryRoute.Send)
         }
     }
 
-    private fun observeChooseSelectToken(lastAmount: String) {
-        swapChooseTokenNetworkListener.swapChooseTokenNetworkResultFlow
-            .onEach { currency ->
-                if (lastAmount.isNotBlank()) {
-                    swapAmountUpdateTrigger.triggerUpdateAmount(lastAmount)
-                }
-                triggerScreenUpdate(SendEntryPoint.SendWithSwap)
+    @Suppress("MagicNumber")
+    override fun onResult() {
+        modelScope.launch {
+            if (lastSavedAmount.isNotBlank()) {
+                swapAmountUpdateTrigger.triggerUpdateAmount(lastSavedAmount)
             }
-            .launchIn(modelScope)
-            .saveIn(swapChooseTokenListenerJobHolder)
+            // Workaround in order to execute correct exit animation on SendEntryRoute.ChooseToken
+            router.pop()
+            delay(10L)
+            router.replaceAll(SendEntryRoute.SendWithSwap)
+        }
     }
 
-    private fun triggerScreenUpdate(entry: SendEntryPoint) {
-        swapChooseTokenListenerJobHolder.cancel()
-        sendEntryPointState.update { entry }
+    override fun onBack() {
+        router.pop()
     }
-}
-
-enum class SendEntryPoint {
-    SendVanilla,
-    SendWithSwap,
 }