[wallet] add UI for making manual withdrawal via exchange

4 files changed, 127 insertions, 16 deletions

diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt
index f53ce46..189f444 100644
--- a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeAdapter.kt
@@ -19,8 +19,11 @@ package net.taler.wallet.exchanges
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.ImageButton
 import android.widget.TextView
+import androidx.appcompat.widget.PopupMenu
 import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.RecyclerView.Adapter
 import net.taler.wallet.R
 import net.taler.wallet.cleanExchange
 import net.taler.wallet.exchanges.ExchangeAdapter.ExchangeItemViewHolder
@@ -29,9 +32,16 @@ data class ExchangeItem(
     val exchangeBaseUrl: String,
     val currency: String,
     val paytoUris: List<String>
-)
+) {
+    val name: String get() = cleanExchange(exchangeBaseUrl)
+}
+
+interface ExchangeClickListener {
+    fun onManualWithdraw(item: ExchangeItem)
+}
 
-internal class ExchangeAdapter : RecyclerView.Adapter<ExchangeItemViewHolder>() {
+internal class ExchangeAdapter(private val listener: ExchangeClickListener) :
+    Adapter<ExchangeItemViewHolder>() {
 
     private val items = ArrayList<ExchangeItem>()
 
@@ -57,9 +67,26 @@ internal class ExchangeAdapter : RecyclerView.Adapter<ExchangeItemViewHolder>()
         private val context = v.context
         private val urlView: TextView = v.findViewById(R.id.urlView)
         private val currencyView: TextView = v.findViewById(R.id.currencyView)
+        private val overflowIcon: ImageButton = v.findViewById(R.id.overflowIcon)
+
         fun bind(item: ExchangeItem) {
-            urlView.text = cleanExchange(item.exchangeBaseUrl)
+            urlView.text = item.name
             currencyView.text = context.getString(R.string.exchange_list_currency, item.currency)
+            overflowIcon.setOnClickListener { openMenu(overflowIcon, item) }
+        }
+
+        private fun openMenu(anchor: View, item: ExchangeItem) = PopupMenu(context, anchor).apply {
+            inflate(R.menu.exchange)
+            setOnMenuItemClickListener { menuItem ->
+                when (menuItem.itemId) {
+                    R.id.action_manual_withdrawal -> {
+                        listener.onManualWithdraw(item)
+                        true
+                    }
+                    else -> false
+                }
+            }
+            show()
         }
     }
 
diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt
index c844042..c7da205 100644
--- a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeListFragment.kt
@@ -25,8 +25,9 @@ import android.widget.Toast.LENGTH_LONG
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.lifecycle.Observer
+import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.DividerItemDecoration
-import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.LinearLayoutManager.VERTICAL
 import kotlinx.android.synthetic.main.fragment_exchange_list.*
 import net.taler.common.EventObserver
 import net.taler.common.fadeIn
@@ -34,11 +35,11 @@ import net.taler.common.fadeOut
 import net.taler.wallet.MainViewModel
 import net.taler.wallet.R
 
-class ExchangeListFragment : Fragment() {
+class ExchangeListFragment : Fragment(), ExchangeClickListener {
 
     private val model: MainViewModel by activityViewModels()
     private val exchangeManager by lazy { model.exchangeManager }
-    private val exchangeAdapter by lazy { ExchangeAdapter() }
+    private val exchangeAdapter by lazy { ExchangeAdapter(this) }
 
     override fun onCreateView(
         inflater: LayoutInflater, container: ViewGroup?,
@@ -50,7 +51,7 @@ class ExchangeListFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         list.apply {
             adapter = exchangeAdapter
-            addItemDecoration(DividerItemDecoration(context, LinearLayoutManager.VERTICAL))
+            addItemDecoration(DividerItemDecoration(context, VERTICAL))
         }
         addExchangeFab.setOnClickListener {
             AddExchangeDialogFragment().show(parentFragmentManager, "ADD_EXCHANGE")
@@ -82,4 +83,9 @@ class ExchangeListFragment : Fragment() {
         Toast.makeText(requireContext(), R.string.exchange_add_error, LENGTH_LONG).show()
     }
 
+    override fun onManualWithdraw(item: ExchangeItem) {
+        exchangeManager.withdrawalExchange = item
+        findNavController().navigate(R.id.action_nav_settings_exchanges_to_nav_exchange_manual_withdrawal)
+    }
+
 }
diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
index 4b93c40..cdd5590 100644
--- a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
@@ -21,6 +21,7 @@ import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import com.fasterxml.jackson.databind.ObjectMapper
 import com.fasterxml.jackson.module.kotlin.readValue
+import net.taler.common.Amount
 import net.taler.common.Event
 import net.taler.common.toEvent
 import net.taler.wallet.TAG
@@ -41,6 +42,23 @@ class ExchangeManager(
     private val mAddError = MutableLiveData<Event<Boolean>>()
     val addError: LiveData<Event<Boolean>> = mAddError
 
+    var withdrawalExchange: ExchangeItem? = null
+
+    private fun list(): LiveData<List<ExchangeItem>> {
+        mProgress.value = true
+        walletBackendApi.sendRequest("listExchanges", JSONObject()) { isError, result ->
+            if (isError) {
+                throw AssertionError("Wallet core failed to return exchanges!")
+            } else {
+                val exchanges: List<ExchangeItem> = mapper.readValue(result.getString("exchanges"))
+                Log.d(TAG, "Exchange list: $exchanges")
+                mProgress.value = false
+                mExchanges.value = exchanges
+            }
+        }
+        return mExchanges
+    }
+
     fun add(exchangeUrl: String) {
         mProgress.value = true
         val args = JSONObject().apply { put("exchangeBaseUrl", exchangeUrl) }
@@ -56,19 +74,18 @@ class ExchangeManager(
         }
     }
 
-    private fun list(): LiveData<List<ExchangeItem>> {
-        mProgress.value = true
-        walletBackendApi.sendRequest("listExchanges", JSONObject()) { isError, result ->
+    fun getWithdrawalDetails(exchangeItem: ExchangeItem, amount: Amount) {
+        val args = JSONObject().apply {
+            put("exchangeBaseUrl", exchangeItem.exchangeBaseUrl)
+            put("amount", amount.toJSONString())
+        }
+        walletBackendApi.sendRequest("getWithdrawalDetailsForAmount", args) { isError, result ->
             if (isError) {
-                throw AssertionError("Wallet core failed to return exchanges!")
+                Log.e(TAG, "$result")
             } else {
-                val exchanges: List<ExchangeItem> = mapper.readValue(result.getString("exchanges"))
-                Log.d(TAG, "Exchange list: $exchanges")
-                mProgress.value = false
-                mExchanges.value = exchanges
+                Log.e(TAG, "$result")
             }
         }
-        return mExchanges
     }
 
 }
diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ManualWithdrawFragment.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ManualWithdrawFragment.kt
new file mode 100644
index 0000000..c3f201d
--- /dev/null
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ManualWithdrawFragment.kt
@@ -0,0 +1,61 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2020 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/>
+ */
+
+package net.taler.wallet.exchanges
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import android.widget.Toast.LENGTH_SHORT
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import kotlinx.android.synthetic.main.fragment_manual_withdraw.*
+import net.taler.common.Amount
+import net.taler.common.hideKeyboard
+import net.taler.wallet.MainViewModel
+import net.taler.wallet.R
+import net.taler.wallet.scanQrCode
+
+class ManualWithdrawFragment : Fragment() {
+
+    private val model: MainViewModel by activityViewModels()
+    private val exchangeManager by lazy { model.exchangeManager }
+    private val exchangeItem by lazy { requireNotNull(exchangeManager.withdrawalExchange) }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        return inflater.inflate(R.layout.fragment_manual_withdraw, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        qrCodeButton.setOnClickListener { scanQrCode(requireActivity()) }
+        currencyView.text = exchangeItem.currency
+        paymentOptionsLabel.text =
+            getString(R.string.withdraw_manual_payment_options, exchangeItem.name)
+        checkFeesButton.setOnClickListener {
+            val value = amountView.text.toString().toLong()
+            val amount = Amount(exchangeItem.currency, value, 0)
+            amountView.hideKeyboard()
+            Toast.makeText(view.context, "Not implemented: $amount", LENGTH_SHORT).show()
+            exchangeManager.getWithdrawalDetails(exchangeItem, amount)
+        }
+    }
+
+}