You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
247 lines
10 KiB
247 lines
10 KiB
from typing import TYPE_CHECKING, Optional
|
|
|
|
from PyQt5.QtWidgets import QLabel, QVBoxLayout, QGridLayout, QPushButton
|
|
|
|
from electrum.i18n import _
|
|
from electrum.util import NotEnoughFunds, NoDynamicFeeEstimates
|
|
from electrum.lnutil import ln_dummy_address
|
|
from electrum.transaction import PartialTxOutput, PartialTransaction
|
|
|
|
from .util import (WindowModalDialog, Buttons, OkButton, CancelButton,
|
|
EnterButton, ColorScheme, WWLabel, read_QIcon)
|
|
from .amountedit import BTCAmountEdit
|
|
from .fee_slider import FeeSlider, FeeComboBox
|
|
|
|
if TYPE_CHECKING:
|
|
from .main_window import ElectrumWindow
|
|
|
|
CANNOT_RECEIVE_WARNING = """
|
|
The requested amount is higher than what you can receive in your currently open channels.
|
|
If you continue, your funds will be locked until the remote server can find a path to pay you.
|
|
If the swap cannot be performed after 24h, you will be refunded.
|
|
Do you want to continue?
|
|
"""
|
|
|
|
|
|
class SwapDialog(WindowModalDialog):
|
|
|
|
tx: Optional[PartialTransaction]
|
|
|
|
def __init__(self, window: 'ElectrumWindow'):
|
|
WindowModalDialog.__init__(self, window, _('Submarine Swap'))
|
|
self.window = window
|
|
self.config = window.config
|
|
self.lnworker = self.window.wallet.lnworker
|
|
self.swap_manager = self.lnworker.swap_manager
|
|
self.network = window.network
|
|
self.tx = None
|
|
self.is_reverse = True
|
|
vbox = QVBoxLayout(self)
|
|
self.description_label = WWLabel(self.get_description())
|
|
self.send_amount_e = BTCAmountEdit(self.window.get_decimal_point)
|
|
self.send_amount_e.shortcut.connect(self.spend_max)
|
|
self.recv_amount_e = BTCAmountEdit(self.window.get_decimal_point)
|
|
self.max_button = EnterButton(_("Max"), self.spend_max)
|
|
self.max_button.setFixedWidth(100)
|
|
self.max_button.setCheckable(True)
|
|
self.send_button = QPushButton('')
|
|
self.recv_button = QPushButton('')
|
|
self.send_follows = False
|
|
self.send_amount_e.follows = False
|
|
self.recv_amount_e.follows = False
|
|
self.send_button.clicked.connect(self.toggle_direction)
|
|
self.recv_button.clicked.connect(self.toggle_direction)
|
|
self.send_amount_e.textChanged.connect(self.on_send_edited)
|
|
self.recv_amount_e.textChanged.connect(self.on_recv_edited)
|
|
fee_slider = FeeSlider(self.window, self.config, self.fee_slider_callback)
|
|
fee_combo = FeeComboBox(fee_slider)
|
|
fee_slider.update()
|
|
self.fee_label = QLabel()
|
|
self.server_fee_label = QLabel()
|
|
vbox.addWidget(self.description_label)
|
|
h = QGridLayout()
|
|
h.addWidget(QLabel(_('You send')+':'), 1, 0)
|
|
h.addWidget(self.send_amount_e, 1, 1)
|
|
h.addWidget(self.send_button, 1, 2)
|
|
h.addWidget(self.max_button, 1, 3)
|
|
h.addWidget(QLabel(_('You receive')+':'), 2, 0)
|
|
h.addWidget(self.recv_amount_e, 2, 1)
|
|
h.addWidget(self.recv_button, 2, 2)
|
|
h.addWidget(QLabel(_('Server fee')+':'), 4, 0)
|
|
h.addWidget(self.server_fee_label, 4, 1)
|
|
h.addWidget(QLabel(_('Mining fee')+':'), 5, 0)
|
|
h.addWidget(self.fee_label, 5, 1)
|
|
h.addWidget(fee_slider, 6, 1)
|
|
h.addWidget(fee_combo, 6, 2)
|
|
vbox.addLayout(h)
|
|
vbox.addStretch(1)
|
|
self.ok_button = OkButton(self)
|
|
self.ok_button.setDefault(True)
|
|
self.ok_button.setEnabled(False)
|
|
vbox.addLayout(Buttons(CancelButton(self), self.ok_button))
|
|
self.update()
|
|
|
|
def fee_slider_callback(self, dyn, pos, fee_rate):
|
|
if dyn:
|
|
if self.config.use_mempool_fees():
|
|
self.config.set_key('depth_level', pos, False)
|
|
else:
|
|
self.config.set_key('fee_level', pos, False)
|
|
else:
|
|
self.config.set_key('fee_per_kb', fee_rate, False)
|
|
if self.send_follows:
|
|
self.on_recv_edited()
|
|
else:
|
|
self.on_send_edited()
|
|
self.update()
|
|
|
|
def toggle_direction(self):
|
|
self.is_reverse = not self.is_reverse
|
|
self.send_amount_e.setAmount(None)
|
|
self.recv_amount_e.setAmount(None)
|
|
self.update()
|
|
|
|
def spend_max(self):
|
|
if self.max_button.isChecked():
|
|
if self.is_reverse:
|
|
self._spend_max_reverse_swap()
|
|
else:
|
|
self._spend_max_forward_swap()
|
|
else:
|
|
self.tx = None
|
|
self.send_amount_e.setAmount(None)
|
|
self.update_fee()
|
|
|
|
def _spend_max_forward_swap(self):
|
|
self.update_tx('!')
|
|
if self.tx:
|
|
amount = self.tx.output_value_for_address(ln_dummy_address())
|
|
max_amt = self.swap_manager.get_max_amount()
|
|
if amount > max_amt:
|
|
amount = max_amt
|
|
self.update_tx(amount)
|
|
if self.tx:
|
|
amount = self.tx.output_value_for_address(ln_dummy_address())
|
|
assert amount <= max_amt
|
|
self.send_amount_e.setAmount(amount)
|
|
|
|
def _spend_max_reverse_swap(self):
|
|
amount = min(self.lnworker.num_sats_can_send(), self.swap_manager.get_max_amount())
|
|
self.send_amount_e.setAmount(amount)
|
|
|
|
def on_send_edited(self):
|
|
if self.send_amount_e.follows:
|
|
return
|
|
self.send_amount_e.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
|
|
send_amount = self.send_amount_e.get_amount()
|
|
recv_amount = self.swap_manager.get_recv_amount(send_amount, self.is_reverse)
|
|
if self.is_reverse and send_amount and send_amount > self.lnworker.num_sats_can_send():
|
|
recv_amount = None
|
|
self.recv_amount_e.follows = True
|
|
self.recv_amount_e.setAmount(recv_amount)
|
|
self.recv_amount_e.setStyleSheet(ColorScheme.BLUE.as_stylesheet())
|
|
self.recv_amount_e.follows = False
|
|
self.send_follows = False
|
|
self.update_fee()
|
|
self.ok_button.setEnabled(recv_amount is not None)
|
|
|
|
def on_recv_edited(self):
|
|
if self.recv_amount_e.follows:
|
|
return
|
|
self.recv_amount_e.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
|
|
recv_amount = self.recv_amount_e.get_amount()
|
|
send_amount = self.swap_manager.get_send_amount(recv_amount, self.is_reverse)
|
|
if self.is_reverse and send_amount and send_amount > self.lnworker.num_sats_can_send():
|
|
send_amount = None
|
|
self.send_amount_e.follows = True
|
|
self.send_amount_e.setAmount(send_amount)
|
|
self.send_amount_e.setStyleSheet(ColorScheme.BLUE.as_stylesheet())
|
|
self.send_amount_e.follows = False
|
|
self.send_follows = True
|
|
self.update_fee()
|
|
self.ok_button.setEnabled(send_amount is not None)
|
|
|
|
def update(self):
|
|
sm = self.swap_manager
|
|
self.send_button.setIcon(read_QIcon("lightning.png" if self.is_reverse else "bitcoin.png"))
|
|
self.send_button.repaint() # macOS hack for #6269
|
|
self.recv_button.setIcon(read_QIcon("lightning.png" if not self.is_reverse else "bitcoin.png"))
|
|
self.recv_button.repaint() # macOS hack for #6269
|
|
self.description_label.setText(self.get_description())
|
|
self.description_label.repaint() # macOS hack for #6269
|
|
server_mining_fee = sm.lockup_fee if self.is_reverse else sm.normal_fee
|
|
server_fee_str = '%.2f'%sm.percentage + '% + ' + self.window.format_amount(server_mining_fee) + ' ' + self.window.base_unit()
|
|
self.server_fee_label.setText(server_fee_str)
|
|
self.server_fee_label.repaint() # macOS hack for #6269
|
|
self.update_fee()
|
|
|
|
def update_fee(self):
|
|
is_max = self.max_button.isChecked()
|
|
if self.is_reverse:
|
|
if is_max:
|
|
self._spend_max_reverse_swap()
|
|
sm = self.swap_manager
|
|
fee = sm.get_claim_fee()
|
|
else:
|
|
if is_max:
|
|
self._spend_max_forward_swap()
|
|
else:
|
|
onchain_amount = self.send_amount_e.get_amount()
|
|
self.update_tx(onchain_amount)
|
|
fee = self.tx.get_fee() if self.tx else None
|
|
fee_text = self.window.format_amount(fee) + ' ' + self.window.base_unit() if fee else ''
|
|
self.fee_label.setText(fee_text)
|
|
self.fee_label.repaint() # macOS hack for #6269
|
|
|
|
def run(self):
|
|
if not self.network:
|
|
self.window.show_error(_("You are offline."))
|
|
return
|
|
self.window.run_coroutine_from_thread(self.swap_manager.get_pairs(), lambda x: self.update())
|
|
if not self.exec_():
|
|
return
|
|
if self.is_reverse:
|
|
lightning_amount = self.send_amount_e.get_amount()
|
|
onchain_amount = self.recv_amount_e.get_amount()
|
|
if lightning_amount is None or onchain_amount is None:
|
|
return
|
|
coro = self.swap_manager.reverse_swap(lightning_amount, onchain_amount + self.swap_manager.get_claim_fee())
|
|
self.window.run_coroutine_from_thread(coro)
|
|
else:
|
|
lightning_amount = self.recv_amount_e.get_amount()
|
|
onchain_amount = self.send_amount_e.get_amount()
|
|
if lightning_amount is None or onchain_amount is None:
|
|
return
|
|
if lightning_amount > self.lnworker.num_sats_can_receive():
|
|
if not self.window.question(CANNOT_RECEIVE_WARNING):
|
|
return
|
|
self.window.protect(self.do_normal_swap, (lightning_amount, onchain_amount))
|
|
|
|
def update_tx(self, onchain_amount):
|
|
if onchain_amount is None:
|
|
self.tx = None
|
|
self.ok_button.setEnabled(False)
|
|
return
|
|
outputs = [PartialTxOutput.from_address_and_value(ln_dummy_address(), onchain_amount)]
|
|
coins = self.window.get_coins()
|
|
try:
|
|
self.tx = self.window.wallet.make_unsigned_transaction(
|
|
coins=coins,
|
|
outputs=outputs)
|
|
except (NotEnoughFunds, NoDynamicFeeEstimates) as e:
|
|
self.tx = None
|
|
self.ok_button.setEnabled(False)
|
|
|
|
def do_normal_swap(self, lightning_amount, onchain_amount, password):
|
|
coro = self.swap_manager.normal_swap(lightning_amount, onchain_amount, password, tx=self.tx)
|
|
self.window.run_coroutine_from_thread(coro)
|
|
|
|
def get_description(self):
|
|
onchain_funds = "onchain funds"
|
|
lightning_funds = "lightning funds"
|
|
|
|
return "Swap {fromType} for {toType} if you need to increase your {capacityType} capacity. This service is powered by the Boltz backend.".format(
|
|
fromType=lightning_funds if self.is_reverse else onchain_funds,
|
|
toType=onchain_funds if self.is_reverse else lightning_funds,
|
|
capacityType="receiving" if self.is_reverse else "sending",
|
|
)
|
|
|