diff options
Diffstat (limited to 'wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt')
| -rw-r--r-- | wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt b/wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt new file mode 100644 index 0000000..2accaaf --- /dev/null +++ b/wallet/src/main/java/net/taler/wallet/ReceiveFundsFragment.kt @@ -0,0 +1,201 @@ +/* + * 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 + +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_LONG +import androidx.compose.foundation.layout.Column +import androidx.compose.foundation.layout.IntrinsicSize +import androidx.compose.foundation.layout.Row +import androidx.compose.foundation.layout.fillMaxWidth +import androidx.compose.foundation.layout.height +import androidx.compose.foundation.layout.padding +import androidx.compose.foundation.rememberScrollState +import androidx.compose.foundation.verticalScroll +import androidx.compose.material3.Button +import androidx.compose.material3.MaterialTheme +import androidx.compose.material3.Surface +import androidx.compose.material3.Text +import androidx.compose.runtime.Composable +import androidx.compose.runtime.getValue +import androidx.compose.runtime.mutableStateOf +import androidx.compose.runtime.saveable.rememberSaveable +import androidx.compose.runtime.setValue +import androidx.compose.ui.Alignment +import androidx.compose.ui.Modifier +import androidx.compose.ui.platform.ComposeView +import androidx.compose.ui.res.stringResource +import androidx.compose.ui.tooling.preview.Preview +import androidx.compose.ui.unit.dp +import androidx.core.os.bundleOf +import androidx.fragment.app.Fragment +import androidx.fragment.app.activityViewModels +import androidx.lifecycle.lifecycleScope +import androidx.navigation.fragment.findNavController +import net.taler.common.Amount +import net.taler.common.CurrencySpecification +import net.taler.wallet.compose.AmountInputField +import net.taler.wallet.compose.DEFAULT_INPUT_DECIMALS +import net.taler.wallet.compose.TalerSurface +import net.taler.wallet.exchanges.ExchangeItem + +class ReceiveFundsFragment : Fragment() { + private val model: MainViewModel by activityViewModels() + private val exchangeManager get() = model.exchangeManager + private val withdrawManager get() = model.withdrawManager + private val balanceManager get() = model.balanceManager + private val peerManager get() = model.peerManager + private val scopeInfo get() = model.transactionManager.selectedScope ?: error("No scope selected") + + override fun onCreateView( + inflater: LayoutInflater, container: ViewGroup?, + savedInstanceState: Bundle?, + ): View = ComposeView(requireContext()).apply { + setContent { + TalerSurface { + ReceiveFundsIntro( + scopeInfo.currency, + balanceManager.getSpecForScopeInfo(scopeInfo), + this@ReceiveFundsFragment::onManualWithdraw, + this@ReceiveFundsFragment::onPeerPull, + ) + } + } + } + + override fun onStart() { + super.onStart() + activity?.setTitle(getString(R.string.transactions_receive_funds_title, scopeInfo.currency)) + } + + private fun onManualWithdraw(amount: Amount) { + // TODO give some UI feedback while we wait for exchanges to load (quick enough for now) + lifecycleScope.launchWhenResumed { + // we need to set the exchange first, we want to withdraw from + exchangeManager.findExchangeForCurrency(amount.currency).collect { exchange -> + onExchangeRetrieved(exchange, amount) + } + } + } + + private fun onExchangeRetrieved(exchange: ExchangeItem?, amount: Amount) { + if (exchange == null) { + Toast.makeText(requireContext(), "No exchange available", LENGTH_LONG).show() + return + } + + // now that we have the exchange, we can navigate + exchangeManager.withdrawalExchange = exchange + withdrawManager.getWithdrawalDetails(exchange.exchangeBaseUrl, amount) + findNavController().navigate(R.id.action_receiveFunds_to_nav_prompt_withdraw) + } + + private fun onPeerPull(amount: Amount) { + val bundle = bundleOf("amount" to amount.toJSONString()) + peerManager.checkPeerPullCredit(amount) + findNavController().navigate(R.id.action_receiveFunds_to_nav_peer_pull, bundle) + } +} + +@Composable +private fun ReceiveFundsIntro( + currency: String, + spec: CurrencySpecification?, + onManualWithdraw: (Amount) -> Unit, + onPeerPull: (Amount) -> Unit, +) { + val scrollState = rememberScrollState() + Column( + modifier = Modifier + .fillMaxWidth() + .verticalScroll(scrollState), + ) { + var text by rememberSaveable { mutableStateOf("0") } + var isError by rememberSaveable { mutableStateOf(false) } + Row( + verticalAlignment = Alignment.CenterVertically, + modifier = Modifier + .padding(16.dp), + ) { + AmountInputField( + modifier = Modifier + .weight(1f) + .padding(end = 16.dp), + value = text, + onValueChange = { input -> + isError = false + text = input + }, + label = { Text(stringResource(R.string.receive_amount)) }, + supportingText = { + if (isError) Text(stringResource(R.string.receive_amount_invalid)) + }, + isError = isError, + numberOfDecimals = spec?.numFractionalInputDigits ?: DEFAULT_INPUT_DECIMALS, + ) + Text( + modifier = Modifier, + text = spec?.symbol ?: currency, + softWrap = false, + style = MaterialTheme.typography.titleLarge, + ) + } + Text( + modifier = Modifier.padding(horizontal = 16.dp), + text = stringResource(R.string.receive_intro), + style = MaterialTheme.typography.titleLarge, + ) + Row(modifier = Modifier.padding(16.dp)) { + Button( + modifier = Modifier + .padding(end = 16.dp) + .height(IntrinsicSize.Max) + .weight(1f), + onClick = { + val amount = getAmount(currency, text) + if (amount == null || amount.isZero()) isError = true + else onManualWithdraw(amount) + }) { + Text(text = stringResource(R.string.receive_withdraw)) + } + Button( + modifier = Modifier + .weight(1f) + .height(IntrinsicSize.Max), + onClick = { + val amount = getAmount(currency, text) + if (amount == null || amount.isZero()) isError = true + else onPeerPull(amount) + }, + ) { + Text(text = stringResource(R.string.receive_peer)) + } + } + } +} + +@Preview +@Composable +fun PreviewReceiveFundsIntro() { + Surface { + ReceiveFundsIntro("TESTKUDOS", null, {}) {} + } +} |