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779 lines
32 KiB
779 lines
32 KiB
# Copyright (C) 2022 The Electrum developers |
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# Distributed under the MIT software license, see the accompanying |
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# file LICENCE or http://www.opensource.org/licenses/mit-license.php |
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import asyncio |
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from decimal import Decimal |
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from typing import Optional, TYPE_CHECKING, Sequence, List |
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from urllib.parse import urlparse |
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from PyQt5.QtCore import pyqtSignal, QPoint |
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from PyQt5.QtWidgets import (QLabel, QVBoxLayout, QGridLayout, |
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QHBoxLayout, QCompleter, QWidget, QToolTip) |
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from electrum import util, paymentrequest |
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from electrum import lnutil |
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from electrum.plugin import run_hook |
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from electrum.i18n import _ |
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from electrum.util import (get_asyncio_loop, bh2u, |
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InvalidBitcoinURI, maybe_extract_lightning_payment_identifier, NotEnoughFunds, |
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NoDynamicFeeEstimates, InvoiceError, parse_max_spend) |
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from electrum.invoices import PR_PAID, Invoice |
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from electrum.transaction import Transaction, PartialTxInput, PartialTransaction, PartialTxOutput |
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from electrum.network import TxBroadcastError, BestEffortRequestFailed |
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from electrum.logging import Logger |
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from electrum.lnaddr import lndecode, LnInvoiceException |
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from electrum.lnurl import decode_lnurl, request_lnurl, callback_lnurl, LNURLError, LNURL6Data |
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from .amountedit import AmountEdit, BTCAmountEdit, SizedFreezableLineEdit |
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from .util import WaitingDialog, HelpLabel, MessageBoxMixin, EnterButton |
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from .confirm_tx_dialog import ConfirmTxDialog |
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from .transaction_dialog import PreviewTxDialog |
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if TYPE_CHECKING: |
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from .main_window import ElectrumWindow |
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class SendTab(QWidget, MessageBoxMixin, Logger): |
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payment_request_ok_signal = pyqtSignal() |
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payment_request_error_signal = pyqtSignal() |
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lnurl6_round1_signal = pyqtSignal(object, object) |
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lnurl6_round2_signal = pyqtSignal(object) |
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clear_send_tab_signal = pyqtSignal() |
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show_error_signal = pyqtSignal(str) |
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payment_request: Optional[paymentrequest.PaymentRequest] |
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_lnurl_data: Optional[LNURL6Data] = None |
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def __init__(self, window: 'ElectrumWindow'): |
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QWidget.__init__(self, window) |
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Logger.__init__(self) |
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self.window = window |
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self.wallet = window.wallet |
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self.fx = window.fx |
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self.config = window.config |
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self.network = window.network |
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self.format_amount_and_units = window.format_amount_and_units |
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self.format_amount = window.format_amount |
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self.base_unit = window.base_unit |
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self.payto_URI = None |
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self.payment_request = None # type: Optional[paymentrequest.PaymentRequest] |
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self.pending_invoice = None |
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# A 4-column grid layout. All the stretch is in the last column. |
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# The exchange rate plugin adds a fiat widget in column 2 |
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self.send_grid = grid = QGridLayout() |
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grid.setSpacing(8) |
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grid.setColumnStretch(3, 1) |
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from .paytoedit import PayToEdit |
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self.amount_e = BTCAmountEdit(self.window.get_decimal_point) |
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self.payto_e = PayToEdit(self) |
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msg = (_("Recipient of the funds.") + "\n\n" |
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+ _("You may enter a Bitcoin address, a label from your list of contacts " |
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"(a list of completions will be proposed), " |
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"or an alias (email-like address that forwards to a Bitcoin address)") + ". " |
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+ _("Lightning invoices are also supported.") + "\n\n" |
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+ _("You can also pay to many outputs in a single transaction, " |
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"specifying one output per line.") + "\n" + _("Format: address, amount") + "\n" |
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+ _("To set the amount to 'max', use the '!' special character.") + "\n" |
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+ _("Integers weights can also be used in conjunction with '!', " |
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"e.g. set one amount to '2!' and another to '3!' to split your coins 40-60.")) |
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payto_label = HelpLabel(_('Pay to'), msg) |
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grid.addWidget(payto_label, 1, 0) |
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grid.addWidget(self.payto_e, 1, 1, 1, -1) |
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completer = QCompleter() |
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completer.setCaseSensitivity(False) |
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self.payto_e.set_completer(completer) |
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completer.setModel(self.window.completions) |
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msg = _('Description of the transaction (not mandatory).') + '\n\n' \ |
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+ _( |
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'The description is not sent to the recipient of the funds. It is stored in your wallet file, and displayed in the \'History\' tab.') |
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description_label = HelpLabel(_('Description'), msg) |
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grid.addWidget(description_label, 2, 0) |
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self.message_e = SizedFreezableLineEdit(width=700) |
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grid.addWidget(self.message_e, 2, 1, 1, -1) |
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msg = (_('The amount to be received by the recipient.') + ' ' |
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+ _('Fees are paid by the sender.') + '\n\n' |
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+ _('The amount will be displayed in red if you do not have enough funds in your wallet.') + ' ' |
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+ _('Note that if you have frozen some of your addresses, the available funds will be lower than your total balance.') + '\n\n' |
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+ _('Keyboard shortcut: type "!" to send all your coins.')) |
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amount_label = HelpLabel(_('Amount'), msg) |
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grid.addWidget(amount_label, 3, 0) |
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grid.addWidget(self.amount_e, 3, 1) |
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self.fiat_send_e = AmountEdit(self.fx.get_currency if self.fx else '') |
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if not self.fx or not self.fx.is_enabled(): |
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self.fiat_send_e.setVisible(False) |
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grid.addWidget(self.fiat_send_e, 3, 2) |
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self.amount_e.frozen.connect( |
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lambda: self.fiat_send_e.setFrozen(self.amount_e.isReadOnly())) |
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self.window.connect_fields(self.amount_e, self.fiat_send_e) |
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self.max_button = EnterButton(_("Max"), self.spend_max) |
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self.max_button.setFixedWidth(100) |
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self.max_button.setCheckable(True) |
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grid.addWidget(self.max_button, 3, 3) |
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self.save_button = EnterButton(_("Save"), self.do_save_invoice) |
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self.send_button = EnterButton(_("Pay") + "...", self.do_pay_or_get_invoice) |
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self.clear_button = EnterButton(_("Clear"), self.do_clear) |
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buttons = QHBoxLayout() |
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buttons.addStretch(1) |
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buttons.addWidget(self.clear_button) |
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buttons.addWidget(self.save_button) |
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buttons.addWidget(self.send_button) |
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grid.addLayout(buttons, 6, 1, 1, 4) |
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self.amount_e.shortcut.connect(self.spend_max) |
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def reset_max(text): |
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self.max_button.setChecked(False) |
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enable = not bool(text) and not self.amount_e.isReadOnly() |
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# self.max_button.setEnabled(enable) |
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self.amount_e.textEdited.connect(reset_max) |
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self.fiat_send_e.textEdited.connect(reset_max) |
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self.set_onchain(False) |
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self.invoices_label = QLabel(_('Send queue')) |
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from .invoice_list import InvoiceList |
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self.invoice_list = InvoiceList(self) |
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vbox0 = QVBoxLayout() |
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vbox0.addLayout(grid) |
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hbox = QHBoxLayout() |
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hbox.addLayout(vbox0) |
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hbox.addStretch(1) |
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vbox = QVBoxLayout(self) |
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vbox.addLayout(hbox) |
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vbox.addStretch(1) |
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vbox.addWidget(self.invoices_label) |
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vbox.addWidget(self.invoice_list) |
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vbox.setStretchFactor(self.invoice_list, 1000) |
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self.searchable_list = self.invoice_list |
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self.invoice_list.update() # after parented and put into a layout, can update without flickering |
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run_hook('create_send_tab', grid) |
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self.payment_request_ok_signal.connect(self.payment_request_ok) |
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self.payment_request_error_signal.connect(self.payment_request_error) |
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self.lnurl6_round1_signal.connect(self.on_lnurl6_round1) |
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self.lnurl6_round2_signal.connect(self.on_lnurl6_round2) |
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self.clear_send_tab_signal.connect(self.do_clear) |
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self.show_error_signal.connect(self.show_error) |
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def spend_max(self): |
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if run_hook('abort_send', self): |
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return |
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outputs = self.payto_e.get_outputs(True) |
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if not outputs: |
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return |
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make_tx = lambda fee_est: self.wallet.make_unsigned_transaction( |
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coins=self.window.get_coins(), |
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outputs=outputs, |
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fee=fee_est, |
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is_sweep=False) |
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try: |
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try: |
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tx = make_tx(None) |
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except (NotEnoughFunds, NoDynamicFeeEstimates) as e: |
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# Check if we had enough funds excluding fees, |
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# if so, still provide opportunity to set lower fees. |
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tx = make_tx(0) |
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except NotEnoughFunds as e: |
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self.max_button.setChecked(False) |
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text = self.get_text_not_enough_funds_mentioning_frozen() |
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self.show_error(text) |
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return |
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self.max_button.setChecked(True) |
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amount = tx.output_value() |
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__, x_fee_amount = run_hook('get_tx_extra_fee', self.wallet, tx) or (None, 0) |
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amount_after_all_fees = amount - x_fee_amount |
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self.amount_e.setAmount(amount_after_all_fees) |
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# show tooltip explaining max amount |
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mining_fee = tx.get_fee() |
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mining_fee_str = self.format_amount_and_units(mining_fee) |
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msg = _("Mining fee: {} (can be adjusted on next screen)").format(mining_fee_str) |
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if x_fee_amount: |
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twofactor_fee_str = self.format_amount_and_units(x_fee_amount) |
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msg += "\n" + _("2fa fee: {} (for the next batch of transactions)").format(twofactor_fee_str) |
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frozen_bal = self.get_frozen_balance_str() |
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if frozen_bal: |
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msg += "\n" + _("Some coins are frozen: {} (can be unfrozen in the Addresses or in the Coins tab)").format(frozen_bal) |
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QToolTip.showText(self.max_button.mapToGlobal(QPoint(0, 0)), msg) |
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def pay_onchain_dialog( |
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self, inputs: Sequence[PartialTxInput], |
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outputs: List[PartialTxOutput], *, |
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external_keypairs=None) -> None: |
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# trustedcoin requires this |
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if run_hook('abort_send', self): |
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return |
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is_sweep = bool(external_keypairs) |
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make_tx = lambda fee_est: self.wallet.make_unsigned_transaction( |
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coins=inputs, |
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outputs=outputs, |
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fee=fee_est, |
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is_sweep=is_sweep) |
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output_values = [x.value for x in outputs] |
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if any(parse_max_spend(outval) for outval in output_values): |
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output_value = '!' |
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else: |
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output_value = sum(output_values) |
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conf_dlg = ConfirmTxDialog(window=self.window, make_tx=make_tx, output_value=output_value, is_sweep=is_sweep) |
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if conf_dlg.not_enough_funds: |
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# Check if we had enough funds excluding fees, |
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# if so, still provide opportunity to set lower fees. |
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if not conf_dlg.have_enough_funds_assuming_zero_fees(): |
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text = self.get_text_not_enough_funds_mentioning_frozen() |
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self.show_message(text) |
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return |
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# shortcut to advanced preview (after "enough funds" check!) |
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if self.config.get('advanced_preview'): |
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preview_dlg = PreviewTxDialog( |
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window=self.window, |
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make_tx=make_tx, |
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external_keypairs=external_keypairs, |
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output_value=output_value) |
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preview_dlg.show() |
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return |
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cancelled, is_send, password, tx = conf_dlg.run() |
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if cancelled: |
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return |
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if is_send: |
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self.save_pending_invoice() |
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def sign_done(success): |
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if success: |
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self.window.broadcast_or_show(tx) |
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self.window.sign_tx_with_password( |
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tx, |
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callback=sign_done, |
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password=password, |
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external_keypairs=external_keypairs, |
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) |
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else: |
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preview_dlg = PreviewTxDialog( |
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window=self.window, |
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make_tx=make_tx, |
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external_keypairs=external_keypairs, |
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output_value=output_value) |
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preview_dlg.show() |
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def get_text_not_enough_funds_mentioning_frozen(self) -> str: |
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text = _("Not enough funds") |
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frozen_str = self.get_frozen_balance_str() |
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if frozen_str: |
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text += " ({} {})".format( |
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frozen_str, _("are frozen") |
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) |
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return text |
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def get_frozen_balance_str(self) -> Optional[str]: |
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frozen_bal = sum(self.wallet.get_frozen_balance()) |
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if not frozen_bal: |
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return None |
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return self.format_amount_and_units(frozen_bal) |
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def do_clear(self): |
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self._lnurl_data = None |
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self.send_button.restore_original_text() |
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self.max_button.setChecked(False) |
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self.payment_request = None |
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self.payto_URI = None |
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self.payto_e.do_clear() |
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self.set_onchain(False) |
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for e in [self.message_e, self.amount_e]: |
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e.setText('') |
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e.setFrozen(False) |
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for e in [self.send_button, self.save_button, self.clear_button, self.amount_e, self.fiat_send_e]: |
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e.setEnabled(True) |
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self.window.update_status() |
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run_hook('do_clear', self) |
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def set_onchain(self, b): |
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self._is_onchain = b |
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self.max_button.setEnabled(b) |
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def lock_amount(self, b: bool) -> None: |
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self.amount_e.setFrozen(b) |
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self.max_button.setEnabled(not b) |
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def prepare_for_send_tab_network_lookup(self): |
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self.window.show_send_tab() |
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self.payto_e.disable_checks = True |
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for e in [self.payto_e, self.message_e]: |
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e.setFrozen(True) |
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self.lock_amount(True) |
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for btn in [self.save_button, self.send_button, self.clear_button]: |
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btn.setEnabled(False) |
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self.payto_e.setTextNoCheck(_("please wait...")) |
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def payment_request_ok(self): |
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pr = self.payment_request |
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if not pr: |
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return |
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invoice = Invoice.from_bip70_payreq(pr, height=0) |
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if self.wallet.get_invoice_status(invoice) == PR_PAID: |
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self.show_message("invoice already paid") |
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self.do_clear() |
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self.payment_request = None |
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return |
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self.payto_e.disable_checks = True |
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if not pr.has_expired(): |
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self.payto_e.setGreen() |
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else: |
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self.payto_e.setExpired() |
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self.payto_e.setTextNoCheck(pr.get_requestor()) |
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self.amount_e.setAmount(pr.get_amount()) |
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self.message_e.setText(pr.get_memo()) |
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self.set_onchain(True) |
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self.max_button.setEnabled(False) |
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for btn in [self.send_button, self.clear_button]: |
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btn.setEnabled(True) |
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# signal to set fee |
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self.amount_e.textEdited.emit("") |
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def payment_request_error(self): |
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pr = self.payment_request |
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if not pr: |
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return |
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self.show_message(pr.error) |
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self.payment_request = None |
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self.do_clear() |
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def on_pr(self, request: 'paymentrequest.PaymentRequest'): |
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self.payment_request = request |
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if self.payment_request.verify(self.window.contacts): |
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self.payment_request_ok_signal.emit() |
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else: |
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self.payment_request_error_signal.emit() |
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def set_lnurl6(self, lnurl: str, *, can_use_network: bool = True): |
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try: |
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url = decode_lnurl(lnurl) |
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except LnInvoiceException as e: |
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self.show_error(_("Error parsing Lightning invoice") + f":\n{e}") |
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return |
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if not can_use_network: |
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return |
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async def f(): |
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try: |
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lnurl_data = await request_lnurl(url) |
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except LNURLError as e: |
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self.show_error_signal.emit(f"LNURL request encountered error: {e}") |
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self.clear_send_tab_signal.emit() |
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return |
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self.lnurl6_round1_signal.emit(lnurl_data, url) |
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asyncio.run_coroutine_threadsafe(f(), get_asyncio_loop()) # TODO should be cancellable |
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self.prepare_for_send_tab_network_lookup() |
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def on_lnurl6_round1(self, lnurl_data: LNURL6Data, url: str): |
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self._lnurl_data = lnurl_data |
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domain = urlparse(url).netloc |
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self.payto_e.setTextNoCheck(f"invoice from lnurl") |
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self.message_e.setText(f"lnurl: {domain}: {lnurl_data.metadata_plaintext}") |
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self.amount_e.setAmount(lnurl_data.min_sendable_sat) |
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self.amount_e.setFrozen(False) |
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self.send_button.setText(_('Get Invoice')) |
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for btn in [self.send_button, self.clear_button]: |
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btn.setEnabled(True) |
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self.set_onchain(False) |
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|
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def set_bolt11(self, invoice: str): |
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"""Parse ln invoice, and prepare the send tab for it.""" |
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try: |
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lnaddr = lndecode(invoice) |
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except LnInvoiceException as e: |
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self.show_error(_("Error parsing Lightning invoice") + f":\n{e}") |
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return |
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except lnutil.IncompatibleOrInsaneFeatures as e: |
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self.show_error(_("Invoice requires unknown or incompatible Lightning feature") + f":\n{e!r}") |
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return |
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pubkey = bh2u(lnaddr.pubkey.serialize()) |
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for k,v in lnaddr.tags: |
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if k == 'd': |
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description = v |
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break |
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else: |
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description = '' |
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self.payto_e.setFrozen(True) |
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self.payto_e.setTextNoCheck(pubkey) |
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self.payto_e.lightning_invoice = invoice |
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if not self.message_e.text(): |
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self.message_e.setText(description) |
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if lnaddr.get_amount_sat() is not None: |
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self.amount_e.setAmount(lnaddr.get_amount_sat()) |
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self.set_onchain(False) |
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def set_bip21(self, text: str, *, can_use_network: bool = True): |
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on_bip70_pr = self.on_pr if can_use_network else None |
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try: |
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out = util.parse_URI(text, on_bip70_pr) |
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except InvalidBitcoinURI as e: |
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self.show_error(_("Error parsing URI") + f":\n{e}") |
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return |
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self.payto_URI = out |
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r = out.get('r') |
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sig = out.get('sig') |
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name = out.get('name') |
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if (r or (name and sig)) and can_use_network: |
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self.prepare_for_send_tab_network_lookup() |
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return |
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address = out.get('address') |
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amount = out.get('amount') |
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label = out.get('label') |
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message = out.get('message') |
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lightning = out.get('lightning') |
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if lightning: |
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self.handle_payment_identifier(lightning, can_use_network=can_use_network) |
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return |
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# use label as description (not BIP21 compliant) |
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if label and not message: |
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message = label |
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if address: |
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self.payto_e.setText(address) |
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if message: |
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self.message_e.setText(message) |
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if amount: |
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self.amount_e.setAmount(amount) |
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|
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def handle_payment_identifier(self, text: str, *, can_use_network: bool = True): |
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"""Takes |
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Lightning identifiers: |
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* lightning-URI (containing bolt11 or lnurl) |
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* bolt11 invoice |
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* lnurl |
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Bitcoin identifiers: |
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* bitcoin-URI |
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and sets the sending screen. |
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""" |
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text = text.strip() |
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if not text: |
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return |
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if invoice_or_lnurl := maybe_extract_lightning_payment_identifier(text): |
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if invoice_or_lnurl.startswith('lnurl'): |
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self.set_lnurl6(invoice_or_lnurl, can_use_network=can_use_network) |
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else: |
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self.set_bolt11(invoice_or_lnurl) |
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elif text.lower().startswith(util.BITCOIN_BIP21_URI_SCHEME + ':'): |
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self.set_bip21(text, can_use_network=can_use_network) |
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else: |
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raise ValueError("Could not handle payment identifier.") |
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# update fiat amount |
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self.amount_e.textEdited.emit("") |
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self.window.show_send_tab() |
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|
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def read_invoice(self): |
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if self.check_send_tab_payto_line_and_show_errors(): |
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return |
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try: |
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if not self._is_onchain: |
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invoice_str = self.payto_e.lightning_invoice |
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if not invoice_str: |
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return |
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if not self.wallet.has_lightning(): |
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self.show_error(_('Lightning is disabled')) |
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return |
|
invoice = Invoice.from_bech32(invoice_str) |
|
if invoice.amount_msat is None: |
|
amount_sat = self.amount_e.get_amount() |
|
if amount_sat: |
|
invoice.amount_msat = int(amount_sat * 1000) |
|
else: |
|
self.show_error(_('No amount')) |
|
return |
|
return invoice |
|
else: |
|
outputs = self.read_outputs() |
|
if self.check_send_tab_onchain_outputs_and_show_errors(outputs): |
|
return |
|
message = self.message_e.text() |
|
return self.wallet.create_invoice( |
|
outputs=outputs, |
|
message=message, |
|
pr=self.payment_request, |
|
URI=self.payto_URI) |
|
except InvoiceError as e: |
|
self.show_error(_('Error creating payment') + ':\n' + str(e)) |
|
|
|
def do_save_invoice(self): |
|
self.pending_invoice = self.read_invoice() |
|
if not self.pending_invoice: |
|
return |
|
self.save_pending_invoice() |
|
|
|
def save_pending_invoice(self): |
|
if not self.pending_invoice: |
|
return |
|
self.do_clear() |
|
self.wallet.save_invoice(self.pending_invoice) |
|
self.invoice_list.update() |
|
self.pending_invoice = None |
|
|
|
def _lnurl_get_invoice(self) -> None: |
|
assert self._lnurl_data |
|
amount = self.amount_e.get_amount() |
|
if not (self._lnurl_data.min_sendable_sat <= amount <= self._lnurl_data.max_sendable_sat): |
|
self.show_error(f'Amount must be between {self._lnurl_data.min_sendable_sat} and {self._lnurl_data.max_sendable_sat} sat.') |
|
return |
|
|
|
async def f(): |
|
try: |
|
invoice_data = await callback_lnurl( |
|
self._lnurl_data.callback_url, |
|
params={'amount': self.amount_e.get_amount() * 1000}, |
|
) |
|
except LNURLError as e: |
|
self.show_error_signal.emit(f"LNURL request encountered error: {e}") |
|
self.clear_send_tab_signal.emit() |
|
return |
|
invoice = invoice_data.get('pr') |
|
self.lnurl6_round2_signal.emit(invoice) |
|
|
|
asyncio.run_coroutine_threadsafe(f(), get_asyncio_loop()) # TODO should be cancellable |
|
self.prepare_for_send_tab_network_lookup() |
|
|
|
def on_lnurl6_round2(self, bolt11_invoice: str): |
|
self.set_bolt11(bolt11_invoice) |
|
self.payto_e.setFrozen(True) |
|
self.amount_e.setEnabled(False) |
|
self.fiat_send_e.setEnabled(False) |
|
for btn in [self.send_button, self.clear_button, self.save_button]: |
|
btn.setEnabled(True) |
|
self.send_button.restore_original_text() |
|
self._lnurl_data = None |
|
|
|
def do_pay_or_get_invoice(self): |
|
if self._lnurl_data: |
|
self._lnurl_get_invoice() |
|
return |
|
self.pending_invoice = self.read_invoice() |
|
if not self.pending_invoice: |
|
return |
|
self.do_pay_invoice(self.pending_invoice) |
|
|
|
def pay_multiple_invoices(self, invoices): |
|
outputs = [] |
|
for invoice in invoices: |
|
outputs += invoice.outputs |
|
self.pay_onchain_dialog(self.window.get_coins(), outputs) |
|
|
|
def do_pay_invoice(self, invoice: 'Invoice'): |
|
if invoice.is_lightning(): |
|
self.pay_lightning_invoice(invoice) |
|
else: |
|
self.pay_onchain_dialog(self.window.get_coins(), invoice.outputs) |
|
|
|
def read_outputs(self) -> List[PartialTxOutput]: |
|
if self.payment_request: |
|
outputs = self.payment_request.get_outputs() |
|
else: |
|
outputs = self.payto_e.get_outputs(self.max_button.isChecked()) |
|
return outputs |
|
|
|
def check_send_tab_onchain_outputs_and_show_errors(self, outputs: List[PartialTxOutput]) -> bool: |
|
"""Returns whether there are errors with outputs. |
|
Also shows error dialog to user if so. |
|
""" |
|
if not outputs: |
|
self.show_error(_('No outputs')) |
|
return True |
|
|
|
for o in outputs: |
|
if o.scriptpubkey is None: |
|
self.show_error(_('Bitcoin Address is None')) |
|
return True |
|
if o.value is None: |
|
self.show_error(_('Invalid Amount')) |
|
return True |
|
|
|
return False # no errors |
|
|
|
def check_send_tab_payto_line_and_show_errors(self) -> bool: |
|
"""Returns whether there are errors. |
|
Also shows error dialog to user if so. |
|
""" |
|
pr = self.payment_request |
|
if pr: |
|
if pr.has_expired(): |
|
self.show_error(_('Payment request has expired')) |
|
return True |
|
|
|
if not pr: |
|
errors = self.payto_e.get_errors() |
|
if errors: |
|
if len(errors) == 1 and not errors[0].is_multiline: |
|
err = errors[0] |
|
self.show_warning(_("Failed to parse 'Pay to' line") + ":\n" + |
|
f"{err.line_content[:40]}...\n\n" |
|
f"{err.exc!r}") |
|
else: |
|
self.show_warning(_("Invalid Lines found:") + "\n\n" + |
|
'\n'.join([_("Line #") + |
|
f"{err.idx+1}: {err.line_content[:40]}... ({err.exc!r})" |
|
for err in errors])) |
|
return True |
|
|
|
if self.payto_e.is_alias and self.payto_e.validated is False: |
|
alias = self.payto_e.toPlainText() |
|
msg = _('WARNING: the alias "{}" could not be validated via an additional ' |
|
'security check, DNSSEC, and thus may not be correct.').format(alias) + '\n' |
|
msg += _('Do you wish to continue?') |
|
if not self.question(msg): |
|
return True |
|
|
|
return False # no errors |
|
|
|
def pay_lightning_invoice(self, invoice: Invoice): |
|
amount_sat = invoice.get_amount_sat() |
|
key = self.wallet.get_key_for_outgoing_invoice(invoice) |
|
if amount_sat is None: |
|
raise Exception("missing amount for LN invoice") |
|
if not self.wallet.lnworker.can_pay_invoice(invoice): |
|
num_sats_can_send = int(self.wallet.lnworker.num_sats_can_send()) |
|
lightning_needed = amount_sat - num_sats_can_send |
|
lightning_needed += (lightning_needed // 20) # operational safety margin |
|
coins = self.window.get_coins(nonlocal_only=True) |
|
can_pay_onchain = invoice.get_address() and self.wallet.can_pay_onchain(invoice.get_outputs(), coins=coins) |
|
can_pay_with_new_channel = self.wallet.lnworker.suggest_funding_amount(amount_sat, coins=coins) |
|
can_pay_with_swap = self.wallet.lnworker.suggest_swap_to_send(amount_sat, coins=coins) |
|
rebalance_suggestion = self.wallet.lnworker.suggest_rebalance_to_send(amount_sat) |
|
can_rebalance = bool(rebalance_suggestion) and self.window.num_tasks() == 0 |
|
choices = {} |
|
if can_rebalance: |
|
msg = ''.join([ |
|
_('Rebalance existing channels'), '\n', |
|
_('Move funds between your channels in order to increase your sending capacity.') |
|
]) |
|
choices[0] = msg |
|
if can_pay_with_new_channel: |
|
msg = ''.join([ |
|
_('Open a new channel'), '\n', |
|
_('You will be able to pay once the channel is open.') |
|
]) |
|
choices[1] = msg |
|
if can_pay_with_swap: |
|
msg = ''.join([ |
|
_('Swap onchain funds for lightning funds'), '\n', |
|
_('You will be able to pay once the swap is confirmed.') |
|
]) |
|
choices[2] = msg |
|
if can_pay_onchain: |
|
msg = ''.join([ |
|
_('Pay onchain'), '\n', |
|
_('Funds will be sent to the invoice fallback address.') |
|
]) |
|
choices[3] = msg |
|
if not choices: |
|
raise NotEnoughFunds() |
|
msg = _('You cannot pay that invoice using Lightning.') |
|
if self.wallet.lnworker.channels: |
|
msg += '\n' + _('Your channels can send {}.').format(self.format_amount(num_sats_can_send) + self.base_unit()) |
|
r = self.window.query_choice(msg, choices) |
|
if r is not None: |
|
self.save_pending_invoice() |
|
if r == 0: |
|
chan1, chan2, delta = rebalance_suggestion |
|
self.window.rebalance_dialog(chan1, chan2, amount_sat=delta) |
|
elif r == 1: |
|
amount_sat, min_amount_sat = can_pay_with_new_channel |
|
self.window.channels_list.new_channel_dialog(amount_sat=amount_sat, min_amount_sat=min_amount_sat) |
|
elif r == 2: |
|
chan, swap_recv_amount_sat = can_pay_with_swap |
|
self.window.run_swap_dialog(is_reverse=False, recv_amount_sat=swap_recv_amount_sat, channels=[chan]) |
|
elif r == 3: |
|
self.pay_onchain_dialog(coins, invoice.get_outputs()) |
|
return |
|
|
|
# FIXME this is currently lying to user as we truncate to satoshis |
|
amount_msat = invoice.get_amount_msat() |
|
msg = _("Pay lightning invoice?") + '\n\n' + _("This will send {}?").format(self.format_amount_and_units(Decimal(amount_msat)/1000)) |
|
if not self.question(msg): |
|
return |
|
self.save_pending_invoice() |
|
coro = self.wallet.lnworker.pay_invoice(invoice.lightning_invoice, amount_msat=amount_msat) |
|
self.window.run_coroutine_from_thread(coro, _('Sending payment')) |
|
|
|
def broadcast_transaction(self, tx: Transaction): |
|
|
|
def broadcast_thread(): |
|
# non-GUI thread |
|
pr = self.payment_request |
|
if pr and pr.has_expired(): |
|
self.payment_request = None |
|
return False, _("Invoice has expired") |
|
try: |
|
self.network.run_from_another_thread(self.network.broadcast_transaction(tx)) |
|
except TxBroadcastError as e: |
|
return False, e.get_message_for_gui() |
|
except BestEffortRequestFailed as e: |
|
return False, repr(e) |
|
# success |
|
txid = tx.txid() |
|
if pr: |
|
self.payment_request = None |
|
refund_address = self.wallet.get_receiving_address() |
|
coro = pr.send_payment_and_receive_paymentack(tx.serialize(), refund_address) |
|
fut = asyncio.run_coroutine_threadsafe(coro, self.network.asyncio_loop) |
|
ack_status, ack_msg = fut.result(timeout=20) |
|
self.logger.info(f"Payment ACK: {ack_status}. Ack message: {ack_msg}") |
|
return True, txid |
|
|
|
# Capture current TL window; override might be removed on return |
|
parent = self.window.top_level_window(lambda win: isinstance(win, MessageBoxMixin)) |
|
|
|
def broadcast_done(result): |
|
# GUI thread |
|
if result: |
|
success, msg = result |
|
if success: |
|
parent.show_message(_('Payment sent.') + '\n' + msg) |
|
self.invoice_list.update() |
|
else: |
|
msg = msg or '' |
|
parent.show_error(msg) |
|
|
|
WaitingDialog(self, _('Broadcasting transaction...'), |
|
broadcast_thread, broadcast_done, self.window.on_error) |
|
|
|
def paytomany(self): |
|
self.window.show_send_tab() |
|
self.payto_e.paytomany() |
|
msg = '\n'.join([ |
|
_('Enter a list of outputs in the \'Pay to\' field.'), |
|
_('One output per line.'), |
|
_('Format: address, amount'), |
|
_('You may load a CSV file using the file icon.') |
|
]) |
|
self.show_message(msg, title=_('Pay to many')) |
|
|
|
def payto_contacts(self, labels): |
|
paytos = [self.window.get_contact_payto(label) for label in labels] |
|
self.window.show_send_tab() |
|
if len(paytos) == 1: |
|
self.payto_e.setText(paytos[0]) |
|
self.amount_e.setFocus() |
|
else: |
|
text = "\n".join([payto + ", 0" for payto in paytos]) |
|
self.payto_e.setText(text) |
|
self.payto_e.setFocus() |
|
|
|
|
|
|