[wallet] implement prototype for outgoing peer transactions

3 files changed, 267 insertions, 0 deletions

diff --git a/wallet/src/main/java/net/taler/wallet/transactions/TransactionPeerFragment.kt b/wallet/src/main/java/net/taler/wallet/transactions/TransactionPeerFragment.kt
new file mode 100644
index 0000000..f1afb41
--- /dev/null
+++ b/wallet/src/main/java/net/taler/wallet/transactions/TransactionPeerFragment.kt
@@ -0,0 +1,148 @@
+/*
+ * This file is part of GNU Taler
+ * (C) 2022 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.transactions
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.Button
+import androidx.compose.material.ButtonDefaults
+import androidx.compose.material.Icon
+import androidx.compose.material.MaterialTheme
+import androidx.compose.material.Surface
+import androidx.compose.material.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment.Companion.CenterHorizontally
+import androidx.compose.ui.Alignment.Companion.CenterVertically
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.ComposeView
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.colorResource
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.google.android.material.composethemeadapter.MdcTheme
+import net.taler.common.Amount
+import net.taler.common.toAbsoluteTime
+import net.taler.wallet.R
+import net.taler.wallet.peer.TransactionPeerPullCreditComposable
+import net.taler.wallet.peer.TransactionPeerPushDebitComposable
+
+class TransactionPeerFragment : TransactionDetailFragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?,
+    ): View = ComposeView(requireContext()).apply {
+        setContent {
+            MdcTheme {
+                Surface {
+                    val t = transaction ?: error("No transaction")
+                    TransactionPeerComposable(t) {
+                        onDeleteButtonClicked(t)
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun TransactionPeerComposable(t: Transaction, onDelete: () -> Unit) {
+    val scrollState = rememberScrollState()
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .verticalScroll(scrollState),
+        horizontalAlignment = CenterHorizontally,
+    ) {
+        val context = LocalContext.current
+        Text(
+            modifier = Modifier.padding(16.dp),
+            text = t.timestamp.ms.toAbsoluteTime(context).toString(),
+            style = MaterialTheme.typography.body1,
+        )
+        when (t) {
+            is TransactionPeerPullCredit -> TransactionPeerPullCreditComposable(t)
+            is TransactionPeerPushCredit -> TODO()
+            is TransactionPeerPullDebit -> TODO()
+            is TransactionPeerPushDebit -> TransactionPeerPushDebitComposable(t)
+            else -> error("unexpected transaction: ${t::class.simpleName}")
+        }
+        Button(
+            modifier = Modifier.padding(16.dp),
+            colors = ButtonDefaults.buttonColors(backgroundColor = colorResource(R.color.red)),
+            onClick = onDelete,
+        ) {
+            Row(verticalAlignment = CenterVertically) {
+                Icon(
+                    painter = painterResource(id = R.drawable.ic_delete),
+                    contentDescription = null,
+                    tint = Color.White,
+                )
+                Text(
+                    modifier = Modifier.padding(start = 8.dp),
+                    text = stringResource(R.string.transactions_delete),
+                    color = Color.White,
+                )
+            }
+        }
+    }
+}
+
+@Composable
+fun TransactionAmountComposable(label: String, amount: Amount, amountType: AmountType) {
+    Text(
+        modifier = Modifier.padding(top = 16.dp, start = 16.dp, end = 16.dp),
+        text = label,
+        style = MaterialTheme.typography.body2,
+    )
+    Text(
+        modifier = Modifier.padding(top = 8.dp, start = 16.dp, end = 16.dp, bottom = 16.dp),
+        text = if (amountType == AmountType.Negative) "-$amount" else amount.toString(),
+        fontSize = 24.sp,
+        color = when (amountType) {
+            AmountType.Positive -> colorResource(R.color.green)
+            AmountType.Negative -> colorResource(R.color.red)
+            AmountType.Neutral -> Color.Unspecified
+        },
+    )
+}
+
+@Composable
+fun TransactionInfoComposable(label: String, info: String) {
+    Text(
+        modifier = Modifier.padding(top = 16.dp, start = 16.dp, end = 16.dp),
+        text = label,
+        style = MaterialTheme.typography.body2,
+    )
+    Text(
+        modifier = Modifier.padding(top = 8.dp, start = 16.dp, end = 16.dp, bottom = 16.dp),
+        text = info,
+        fontSize = 24.sp,
+    )
+}
diff --git a/wallet/src/main/java/net/taler/wallet/transactions/Transactions.kt b/wallet/src/main/java/net/taler/wallet/transactions/Transactions.kt
index ca01501..6f72567 100644
--- a/wallet/src/main/java/net/taler/wallet/transactions/Transactions.kt
+++ b/wallet/src/main/java/net/taler/wallet/transactions/Transactions.kt
@@ -252,3 +252,116 @@ class TransactionRefresh(
 
     override val generalTitleRes = R.string.transaction_refresh
 }
+
+@Serializable
+data class PeerInfoShort(
+    val expiration: Timestamp? = null,
+    val summary: String? = null,
+)
+
+/**
+ * Debit because we paid someone's invoice.
+ */
+@Serializable
+@SerialName("peer-pull-debit")
+class TransactionPeerPullDebit(
+    override val transactionId: String,
+    override val timestamp: Timestamp,
+    override val pending: Boolean,
+    val exchangeBaseUrl: String,
+    override val error: TalerErrorInfo? = null,
+    override val amountRaw: Amount,
+    override val amountEffective: Amount,
+    val info: PeerInfoShort,
+) : Transaction() {
+    override val icon = R.drawable.ic_cash_usd_outline
+    override val detailPageNav = R.id.nav_transactions_detail_peer
+
+    @Transient
+    override val amountType = AmountType.Negative
+    override fun getTitle(context: Context): String {
+        return context.getString(R.string.transaction_peer_push_debit)
+    }
+    override val generalTitleRes = R.string.payment_title
+}
+
+/**
+ * Credit because someone paid for an invoice we created.
+ */
+@Serializable
+@SerialName("peer-pull-credit")
+class TransactionPeerPullCredit(
+    override val transactionId: String,
+    override val timestamp: Timestamp,
+    override val pending: Boolean,
+    val exchangeBaseUrl: String,
+    override val error: TalerErrorInfo? = null,
+    override val amountRaw: Amount,
+    override val amountEffective: Amount,
+    val info: PeerInfoShort,
+    val talerUri: String,
+    // val completed: Boolean, maybe
+) : Transaction() {
+    override val icon = R.drawable.transaction_withdrawal
+    override val detailPageNav = R.id.nav_transactions_detail_peer
+
+    override val amountType get() = AmountType.Positive
+    override fun getTitle(context: Context): String {
+        return context.getString(R.string.transaction_peer_pull_credit)
+    }
+    override val generalTitleRes = R.string.transaction_peer_pull_credit
+}
+
+/**
+ * Debit because we sent money to someone.
+ */
+@Serializable
+@SerialName("peer-push-debit")
+class TransactionPeerPushDebit(
+    override val transactionId: String,
+    override val timestamp: Timestamp,
+    override val pending: Boolean,
+    val exchangeBaseUrl: String,
+    override val error: TalerErrorInfo? = null,
+    override val amountRaw: Amount,
+    override val amountEffective: Amount,
+    val info: PeerInfoShort,
+    val talerUri: String,
+    // val completed: Boolean, definitely
+) : Transaction() {
+    override val icon = R.drawable.ic_cash_usd_outline
+    override val detailPageNav = R.id.nav_transactions_detail_peer
+
+    @Transient
+    override val amountType = AmountType.Negative
+    override fun getTitle(context: Context): String {
+        return context.getString(R.string.transaction_peer_push_debit)
+    }
+    override val generalTitleRes = R.string.payment_title
+}
+
+/**
+ * We received money via a peer payment.
+ */
+@Serializable
+@SerialName("peer-push-credit")
+class TransactionPeerPushCredit(
+    override val transactionId: String,
+    override val timestamp: Timestamp,
+    override val pending: Boolean,
+    val exchangeBaseUrl: String,
+    override val error: TalerErrorInfo? = null,
+    override val amountRaw: Amount,
+    override val amountEffective: Amount,
+    val info: PeerInfoShort,
+) : Transaction() {
+    override val icon = R.drawable.transaction_withdrawal
+    override val detailPageNav = R.id.nav_transactions_detail_peer
+
+    @Transient
+    override val amountType = AmountType.Positive
+    override fun getTitle(context: Context): String {
+        return context.getString(R.string.transaction_peer_push_debit)
+    }
+    override val generalTitleRes = R.string.withdraw_title
+}
diff --git a/wallet/src/main/java/net/taler/wallet/transactions/TransactionsFragment.kt b/wallet/src/main/java/net/taler/wallet/transactions/TransactionsFragment.kt
index f5840ab..50f95c0 100644
--- a/wallet/src/main/java/net/taler/wallet/transactions/TransactionsFragment.kt
+++ b/wallet/src/main/java/net/taler/wallet/transactions/TransactionsFragment.kt
@@ -115,6 +115,12 @@ class TransactionsFragment : Fragment(), OnTransactionClickListener, ActionMode.
         transactionManager.transactions.observe(viewLifecycleOwner) { result ->
             onTransactionsResult(result)
         }
+        ui.sendButton.setOnClickListener {
+            findNavController().navigate(R.id.sendFunds)
+        }
+        ui.receiveButton.setOnClickListener {
+            findNavController().navigate(R.id.receiveFunds)
+        }
         ui.mainFab.setOnClickListener {
             model.scanCode()
         }