chore(flipcash): handle withdrawal being too small

Signed-off-by: Brandon McAnsh <git@bmcreations.dev>

Author: bmc08gt

apps/flipcash/core/src/main/res/values/strings.xml

@@ -118,7 +118,8 @@
     <string name="prompt_description_confirmWithdrawal">Withdrawals are irreversible and cannot be undone once initiated</string>
     <string name="prompt_title_learnAboutWithdrawalFee">What Is This Fee?</string>
     <string name="prompt_description_learnAboutWithdrawalFee">The account you’re trying to withdraw to requires a one time account creation fee. This fee will be deducted from the amount you’re withdrawing</string>
-
+    <string name="error_title_withdrawalTooSmall">Withdrawal Amount Too Small</string>
+    <string name="error_description_withdrawalTooSmall">Your withdrawal amount is too small to cover the one time fee. Please try a different amount</string>
     <string name="success_description_withdrawalComplete">Your withdrawal has been processed. It may take a few minutes for your funds to show up in your destination wallet</string>
 
     <string name="title_requireBiometrics">Require Biometrics</string>

apps/flipcash/features/withdrawal/src/main/kotlin/com/flipcash/app/withdrawal/WithdrawalViewModel.kt

@@ -21,6 +21,7 @@ import com.getcode.opencode.model.financial.CurrencyCode
 import com.getcode.opencode.model.financial.Fiat
 import com.getcode.opencode.model.financial.LocalFiat
 import com.getcode.opencode.model.financial.Rate
+import com.getcode.opencode.model.financial.minus
 import com.getcode.opencode.model.transactions.WithdrawalAvailability
 import com.getcode.ui.components.text.AmountAnimatedInputUiModel
 import com.getcode.ui.components.text.NumberInputHelper
@@ -132,11 +133,13 @@ internal class WithdrawalViewModel @Inject constructor(
             val success: Boolean = false
         ) : Event
 
-        data object OnLearnAboutFee: Event
+        data object OnLearnAboutFee : Event
+
+        data object OnWithdrawalTooSmall : Event
 
         data object OnWithdraw : Event
         data object OnWithdrawalConfirmed : Event
-        data object OnWithdrawSuccessful: Event
+        data object OnWithdrawSuccessful : Event
     }
 
     val checkBalanceLimit: () -> Boolean = {
@@ -206,7 +209,8 @@ internal class WithdrawalViewModel @Inject constructor(
             .filterIsInstance<Event.OnNumberPressed>()
             .map { it.number }
             .onEach { number ->
-                numberInputHelper.fractionUnits = stateFlow.value.amountEntryState.currencyModel.fractionUnits
+                numberInputHelper.fractionUnits =
+                    stateFlow.value.amountEntryState.currencyModel.fractionUnits
                 numberInputHelper.maxLength = 10 // 1 billion dollars
                 numberInputHelper.onNumber(number)
                 dispatchEvent(Event.OnEnteredNumberChanged())
@@ -277,9 +281,10 @@ internal class WithdrawalViewModel @Inject constructor(
                 }
                 clipboard
             }
-            .mapNotNull { text -> runCatching { Base58.decode(text) }
-                .onFailure { dispatchEvent(Event.UpdateClipboardCheckState(loading = false)) }
-                .getOrNull()
+            .mapNotNull { text ->
+                runCatching { Base58.decode(text) }
+                    .onFailure { dispatchEvent(Event.UpdateClipboardCheckState(loading = false)) }
+                    .getOrNull()
             }.filter { address ->
                 val length = address.size
                 if (length != 32) {
@@ -416,6 +421,7 @@ internal class WithdrawalViewModel @Inject constructor(
                 }
 
                 Event.OnLearnAboutFee,
+                Event.OnWithdrawalTooSmall,
                 Event.OnWithdrawalConfirmed,
                 Event.OnWithdrawSuccessful,
                 Event.PasteFromClipboard,

apps/flipcash/features/withdrawal/src/main/kotlin/com/flipcash/app/withdrawal/internal/confirmation/WithdrawalConfirmationScreen.kt

@@ -2,45 +2,38 @@ package com.flipcash.app.withdrawal.internal.confirmation
 
 
 import androidx.compose.foundation.Image
-import androidx.compose.foundation.background
-import androidx.compose.foundation.border
 import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
-import androidx.compose.material.Text
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowDownward
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.style.TextAlign
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import cafe.adriel.voyager.core.registry.ScreenRegistry
 import com.flipcash.app.core.NavScreenProvider
-import com.flipcash.app.core.money.formatted
+import com.flipcash.app.withdrawal.WithdrawalEntryScreen
+import com.flipcash.app.withdrawal.WithdrawalFlow
 import com.flipcash.app.withdrawal.WithdrawalViewModel
 import com.flipcash.app.withdrawal.internal.components.DestinationBox
 import com.flipcash.app.withdrawal.internal.components.TransactionReceipt
 import com.flipcash.features.withdrawal.R
 import com.getcode.manager.BottomBarAction
 import com.getcode.manager.BottomBarManager
 import com.getcode.navigation.core.LocalCodeNavigator
-import com.getcode.opencode.compose.LocalExchange
 import com.getcode.opencode.model.financial.Fiat
 import com.getcode.opencode.model.financial.LocalFiat
-import com.getcode.opencode.model.financial.toFiat
+import com.getcode.opencode.model.financial.minus
 import com.getcode.theme.CodeTheme
-import com.getcode.ui.components.text.AmountArea
 import com.getcode.ui.theme.ButtonState
 import com.getcode.ui.theme.CodeButton
 import com.getcode.ui.theme.CodeScaffold
@@ -70,7 +63,6 @@ internal fun WithdrawalConfirmationScreen(viewModel: WithdrawalViewModel) {
                         actions = listOf(
                             BottomBarAction(
                                 text = resources.getString(R.string.action_ok),
-                                onClick = {}
                             )
                         ),
                         onClose = {
@@ -80,6 +72,32 @@ internal fun WithdrawalConfirmationScreen(viewModel: WithdrawalViewModel) {
                 )
             }.launchIn(this)
     }
+
+    LaunchedEffect(state.amountEntryState, state.destinationState) {
+        val amount = state.amountEntryState.selectedAmount
+        val fee = state.destinationState.availability?.feeAmount
+        if (amount.usdc - (fee ?: Fiat.Zero) < Fiat.Zero) {
+            BottomBarManager.showMessage(
+                BottomBarManager.BottomBarMessage(
+                    title = resources.getString(R.string.error_title_withdrawalTooSmall),
+                    subtitle = resources.getString(R.string.error_description_withdrawalTooSmall),
+                    showScrim = false,
+                    showCancel = false,
+                    actions = buildList {
+                        add(
+                            BottomBarAction(
+                                text = resources.getString(R.string.action_ok),
+                            )
+                        )
+                    },
+                    onClose = {
+                        WithdrawalFlow.start()
+                        navigator.popUntil { it is WithdrawalEntryScreen }
+                    }
+                )
+            )
+        }
+    }
 }
 
 @Composable