from fixtures import *  # noqa: F401,F403
import pytest
import unittest
import time
from utils import (
    wait_for, TEST_NETWORK
)


@pytest.mark.openchannel('v1')
@pytest.mark.openchannel('v2')
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
def test_splice(node_factory, bitcoind):
    l1, l2 = node_factory.line_graph(2, fundamount=1000000, wait_for_announce=True, opts={'experimental-splicing': None})

    chan_id = l1.get_channel_id(l2)

    # add extra sats to pay fee
    funds_result = l1.rpc.fundpsbt("109000sat", "slow", 166, excess_as_change=True)

    result = l1.rpc.splice_init(chan_id, 100000, funds_result['psbt'])
    result = l1.rpc.splice_update(chan_id, result['psbt'])
    result = l1.rpc.signpsbt(result['psbt'])
    result = l1.rpc.splice_signed(chan_id, result['signed_psbt'])

    l2.daemon.wait_for_log(r'CHANNELD_NORMAL to CHANNELD_AWAITING_SPLICE')
    l1.daemon.wait_for_log(r'CHANNELD_NORMAL to CHANNELD_AWAITING_SPLICE')

    mempool = bitcoind.rpc.getrawmempool(True)
    assert len(list(mempool.keys())) == 1
    assert result['txid'] in list(mempool.keys())

    bitcoind.generate_block(6, wait_for_mempool=1)

    l2.daemon.wait_for_log(r'CHANNELD_AWAITING_SPLICE to CHANNELD_NORMAL')
    l1.daemon.wait_for_log(r'CHANNELD_AWAITING_SPLICE to CHANNELD_NORMAL')

    inv = l2.rpc.invoice(10**2, '3', 'no_3')
    l1.rpc.pay(inv['bolt11'])

    # Check that the splice doesn't generate a unilateral close transaction
    time.sleep(5)
    assert l1.db_query("SELECT count(*) as c FROM channeltxs;")[0]['c'] == 0


@pytest.mark.openchannel('v1')
@pytest.mark.openchannel('v2')
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
def test_splice_gossip(node_factory, bitcoind):
    l1, l2, l3 = node_factory.line_graph(3, fundamount=1000000, wait_for_announce=True, opts={'experimental-splicing': None})

    chan_id = l1.get_channel_id(l2)

    # add extra sats to pay fee
    funds_result = l1.rpc.fundpsbt("109000sat", "slow", 166, excess_as_change=True)

    result = l1.rpc.splice_init(chan_id, 100000, funds_result['psbt'])
    result = l1.rpc.splice_update(chan_id, result['psbt'])
    result = l1.rpc.signpsbt(result['psbt'])
    result = l1.rpc.splice_signed(chan_id, result['signed_psbt'])

    l2.daemon.wait_for_log(r'CHANNELD_NORMAL to CHANNELD_AWAITING_SPLICE')
    l1.daemon.wait_for_log(r'CHANNELD_NORMAL to CHANNELD_AWAITING_SPLICE')

    mempool = bitcoind.rpc.getrawmempool(True)
    assert len(list(mempool.keys())) == 1
    assert result['txid'] in list(mempool.keys())

    bitcoind.generate_block(6, wait_for_mempool=1)

    l2.daemon.wait_for_log(r'CHANNELD_AWAITING_SPLICE to CHANNELD_NORMAL')
    l1.daemon.wait_for_log(r'CHANNELD_AWAITING_SPLICE to CHANNELD_NORMAL')

    # l3 should see the old channel and new channel at the same time here
    wait_for(lambda: len(l3.rpc.listchannels()['channels']) == 6)

    bitcoind.generate_block(7)

    # The old channel should fall off l3's perspective
    wait_for(lambda: len(l3.rpc.listchannels()['channels']) == 4)

    # Check that the splice doesn't generate a unilateral close transaction
    time.sleep(5)
    assert l1.db_query("SELECT count(*) as c FROM channeltxs;")[0]['c'] == 0

    # Check for channel announcement failure
    assert not l1.daemon.is_in_log("invalid local_channel_announcement")
    assert not l2.daemon.is_in_log("invalid local_channel_announcement")


@pytest.mark.openchannel('v1')
@pytest.mark.openchannel('v2')
@unittest.skipIf(TEST_NETWORK != 'regtest', 'elementsd doesnt yet support PSBT features we need')
def test_splice_listnodes(node_factory, bitcoind):
    # Here we do a splice but underfund it purposefully
    l1, l2 = node_factory.line_graph(2, fundamount=1000000, wait_for_announce=True, opts={'experimental-splicing': None})

    chan_id = l1.get_channel_id(l2)

    # add extra sats to pay fee
    funds_result = l1.rpc.fundpsbt("109000sat", "slow", 166, excess_as_change=True)

    result = l1.rpc.splice_init(chan_id, 100000, funds_result['psbt'])
    result = l1.rpc.splice_update(chan_id, result['psbt'])
    result = l1.rpc.signpsbt(result['psbt'])
    result = l1.rpc.splice_signed(chan_id, result['signed_psbt'])

    l2.daemon.wait_for_log(r'CHANNELD_NORMAL to CHANNELD_AWAITING_SPLICE')
    l1.daemon.wait_for_log(r'CHANNELD_NORMAL to CHANNELD_AWAITING_SPLICE')

    assert len(l1.rpc.listnodes()['nodes']) == 2
    assert len(l2.rpc.listnodes()['nodes']) == 2

    bitcoind.generate_block(6, wait_for_mempool=1)

    l2.daemon.wait_for_log(r'CHANNELD_AWAITING_SPLICE to CHANNELD_NORMAL')
    l1.daemon.wait_for_log(r'CHANNELD_AWAITING_SPLICE to CHANNELD_NORMAL')

    bitcoind.generate_block(7)

    assert len(l1.rpc.listnodes()['nodes']) == 2
    assert len(l2.rpc.listnodes()['nodes']) == 2