[wallet] Allow to restrict coins to age when withdrawing

#0007352

5 files changed, 104 insertions, 12 deletions

diff --git a/wallet/src/main/java/net/taler/wallet/withdraw/PromptWithdrawFragment.kt b/wallet/src/main/java/net/taler/wallet/withdraw/PromptWithdrawFragment.kt
index 3cd2f49..dbf901a 100644
--- a/wallet/src/main/java/net/taler/wallet/withdraw/PromptWithdrawFragment.kt
+++ b/wallet/src/main/java/net/taler/wallet/withdraw/PromptWithdrawFragment.kt
@@ -20,6 +20,7 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ArrayAdapter
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.navigation.fragment.findNavController
@@ -114,13 +115,18 @@ class PromptWithdrawFragment : Fragment() {
     }
 
     private fun onReceivedDetails(s: ReceivedDetails) {
-        showContent(s.amountRaw, s.amountEffective, s.exchangeBaseUrl, s.talerWithdrawUri)
+        showContent(s.amountRaw, s.amountEffective, s.exchangeBaseUrl, s.talerWithdrawUri,
+            s.ageRestrictionOptions)
         ui.confirmWithdrawButton.apply {
             text = getString(R.string.withdraw_button_confirm)
             setOnClickListener {
                 it.fadeOut()
                 ui.confirmProgressBar.fadeIn()
-                withdrawManager.acceptWithdrawal()
+                val ageRestrict = (ui.ageSelector.selectedItem as String?)?.let { age ->
+                    if (age == context.getString(R.string.withdraw_restrict_age_unrestricted)) null
+                    else age.toIntOrNull()
+                }
+                withdrawManager.acceptWithdrawal(ageRestrict)
             }
             isEnabled = true
         }
@@ -131,6 +137,7 @@ class PromptWithdrawFragment : Fragment() {
         amountEffective: Amount,
         exchange: String,
         uri: String?,
+        ageRestrictionOptions: List<Int>? = null,
     ) {
         model.showProgressBar.value = false
         ui.progressBar.fadeOut()
@@ -160,6 +167,15 @@ class PromptWithdrawFragment : Fragment() {
             }
         }
 
+        if (ageRestrictionOptions != null) {
+            ui.ageLabel.fadeIn()
+            val context = requireContext()
+            val items = listOf(context.getString(R.string.withdraw_restrict_age_unrestricted)) +
+                    ageRestrictionOptions.map { it.toString() }
+            ui.ageSelector.adapter = ArrayAdapter(context, R.layout.list_item_age, items)
+            ui.ageSelector.fadeIn()
+        }
+
         ui.withdrawCard.fadeIn()
     }
 
diff --git a/wallet/src/main/java/net/taler/wallet/withdraw/WithdrawManager.kt b/wallet/src/main/java/net/taler/wallet/withdraw/WithdrawManager.kt
index 6fdc916..1698a10 100644
--- a/wallet/src/main/java/net/taler/wallet/withdraw/WithdrawManager.kt
+++ b/wallet/src/main/java/net/taler/wallet/withdraw/WithdrawManager.kt
@@ -44,6 +44,7 @@ sealed class WithdrawStatus {
         val exchangeBaseUrl: String,
         val amountRaw: Amount,
         val amountEffective: Amount,
+        val ageRestrictionOptions: List<Int>? = null,
         val tosText: String,
         val tosEtag: String,
         val showImmediately: Event<Boolean>,
@@ -54,11 +55,12 @@ sealed class WithdrawStatus {
         val exchangeBaseUrl: String,
         val amountRaw: Amount,
         val amountEffective: Amount,
+        val ageRestrictionOptions: List<Int>? = null,
     ) : WithdrawStatus()
 
     object Withdrawing : WithdrawStatus()
     data class Success(val currency: String) : WithdrawStatus()
-    sealed class ManualTransferRequired: WithdrawStatus() {
+    sealed class ManualTransferRequired : WithdrawStatus() {
         abstract val uri: Uri
         abstract val transactionId: String?
     }
@@ -103,6 +105,7 @@ data class WithdrawalDetails(
     val tosAccepted: Boolean,
     val amountRaw: Amount,
     val amountEffective: Amount,
+    val ageRestrictionOptions: List<Int>? = null,
 )
 
 @Serializable
@@ -152,9 +155,12 @@ class WithdrawManager(
             if (details.defaultExchangeBaseUrl == null) {
                 val exchangeSelection = ExchangeSelection(details.amount, uri)
                 withdrawStatus.value = WithdrawStatus.NeedsExchange(exchangeSelection.toEvent())
-            } else {
-                getWithdrawalDetails(details.defaultExchangeBaseUrl, details.amount, false, uri)
-            }
+            } else getWithdrawalDetails(
+                exchangeBaseUrl = details.defaultExchangeBaseUrl,
+                amount = details.amount,
+                showTosImmediately = false,
+                uri = uri,
+            )
         }
     }
 
@@ -177,6 +183,7 @@ class WithdrawManager(
                     exchangeBaseUrl = exchangeBaseUrl,
                     amountRaw = details.amountRaw,
                     amountEffective = details.amountEffective,
+                    ageRestrictionOptions = details.ageRestrictionOptions,
                 )
             } else getExchangeTos(exchangeBaseUrl, details, showTosImmediately, uri)
         }
@@ -198,6 +205,7 @@ class WithdrawManager(
                 exchangeBaseUrl = exchangeBaseUrl,
                 amountRaw = details.amountRaw,
                 amountEffective = details.amountEffective,
+                ageRestrictionOptions = details.ageRestrictionOptions,
                 tosText = it.content,
                 tosEtag = it.currentEtag,
                 showImmediately = showImmediately.toEvent(),
@@ -221,23 +229,28 @@ class WithdrawManager(
                 exchangeBaseUrl = s.exchangeBaseUrl,
                 amountRaw = s.amountRaw,
                 amountEffective = s.amountEffective,
+                ageRestrictionOptions = s.ageRestrictionOptions,
             )
         }
     }
 
     @UiThread
-    fun acceptWithdrawal() = scope.launch {
+    fun acceptWithdrawal(restrictAge: Int? = null) = scope.launch {
         val status = withdrawStatus.value as ReceivedDetails
         withdrawStatus.value = WithdrawStatus.Withdrawing
         if (status.talerWithdrawUri == null) {
-            acceptManualWithdrawal(status)
+            acceptManualWithdrawal(status, restrictAge)
         } else {
-            acceptBankIntegratedWithdrawal(status)
+            acceptBankIntegratedWithdrawal(status, restrictAge)
         }
     }
 
-    private suspend fun acceptBankIntegratedWithdrawal(status: ReceivedDetails) {
+    private suspend fun acceptBankIntegratedWithdrawal(
+        status: ReceivedDetails,
+        restrictAge: Int? = null,
+    ) {
         api.request<Unit>("acceptBankIntegratedWithdrawal") {
+            restrictAge?.let { put("restrictAge", restrictAge) }
             put("exchangeBaseUrl", status.exchangeBaseUrl)
             put("talerWithdrawUri", status.talerWithdrawUri)
         }.onError {
@@ -247,8 +260,9 @@ class WithdrawManager(
         }
     }
 
-    private suspend fun acceptManualWithdrawal(status: ReceivedDetails) {
+    private suspend fun acceptManualWithdrawal(status: ReceivedDetails, restrictAge: Int? = null) {
         api.request("acceptManualWithdrawal", AcceptManualWithdrawalResponse.serializer()) {
+            restrictAge?.let { put("restrictAge", restrictAge) }
             put("exchangeBaseUrl", status.exchangeBaseUrl)
             put("amount", status.amountRaw.toJSONString())
         }.onError {
diff --git a/wallet/src/main/res/layout/fragment_prompt_withdraw.xml b/wallet/src/main/res/layout/fragment_prompt_withdraw.xml
index 372163b..03e7d1a 100644
--- a/wallet/src/main/res/layout/fragment_prompt_withdraw.xml
+++ b/wallet/src/main/res/layout/fragment_prompt_withdraw.xml
@@ -152,7 +152,7 @@
         android:textSize="24sp"
         android:visibility="invisible"
         app:layout_constrainedWidth="true"
-        app:layout_constraintBottom_toTopOf="@+id/withdrawCard"
+        app:layout_constraintBottom_toTopOf="@+id/ageLabel"
         app:layout_constraintEnd_toStartOf="@+id/selectExchangeButton"
         app:layout_constraintHorizontal_chainStyle="packed"
         app:layout_constraintStart_toStartOf="parent"
@@ -176,6 +176,40 @@
         app:tint="?attr/colorOnPrimary"
         tools:visibility="visible" />
 
+    <TextView
+        android:id="@+id/ageLabel"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="32dp"
+        android:layout_marginEnd="16dp"
+        android:gravity="center"
+        android:text="@string/withdraw_restrict_age"
+        android:visibility="invisible"
+        app:layout_constraintBottom_toTopOf="@+id/ageSelector"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/withdrawExchangeUrl"
+        tools:visibility="visible" />
+
+    <Spinner
+        android:id="@+id/ageSelector"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginTop="8dp"
+        android:layout_marginEnd="16dp"
+        android:gravity="center"
+        android:spinnerMode="dropdown"
+        android:textSize="20sp"
+        android:visibility="invisible"
+        app:layout_constraintBottom_toTopOf="@+id/withdrawCard"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/ageLabel"
+        tools:visibility="visible" />
+
     <ProgressBar
         android:id="@+id/progressBar"
         style="?android:attr/progressBarStyleLarge"
diff --git a/wallet/src/main/res/layout/list_item_age.xml b/wallet/src/main/res/layout/list_item_age.xml
new file mode 100644
index 0000000..2d3a6e5
--- /dev/null
+++ b/wallet/src/main/res/layout/list_item_age.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ This file is part of GNU Taler
+  ~ (C) 2023 Taler Systems S.A.
+  ~
+  ~ GNU Taler is free software; you can redistribute it and/or modify it under the
+  ~ terms of the GNU General Public License as published by the Free Software
+  ~ Foundation; either version 3, or (at your option) any later version.
+  ~
+  ~ GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
+  ~ WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+  ~ A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along with
+  ~ GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+  -->
+
+<TextView xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@android:id/text1"
+    style="?android:attr/spinnerItemStyle"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:ellipsize="marquee"
+    android:padding="8dp"
+    android:singleLine="true"
+    android:textAlignment="inherit"
+    android:textSize="20sp" />
diff --git a/wallet/src/main/res/values/strings.xml b/wallet/src/main/res/values/strings.xml
index eb15021..0595fa0 100644
--- a/wallet/src/main/res/values/strings.xml
+++ b/wallet/src/main/res/values/strings.xml
@@ -156,6 +156,8 @@ GNU Taler is immune against many types of fraud, such as phishing of credit card
     <string name="withdraw_title">Withdrawal</string>
     <string name="withdraw_total">Withdraw</string>
     <string name="withdraw_fees">Fee</string>
+    <string name="withdraw_restrict_age">Restrict Usage to Age</string>
+    <string name="withdraw_restrict_age_unrestricted">Unrestricted</string>
     <string name="withdraw_exchange">Exchange</string>
     <string name="withdraw_button_confirm">Confirm Withdraw</string>
     <string name="withdraw_button_confirm_bank">Confirm with bank</string>