#!/usr/bin/env python3
# Copyright (c) 2018-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.

from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import (
    assert_equal,
    assert_raises_rpc_error,
)
from test_framework.blocktools import (
    TIME_GENESIS_BLOCK,
)


class CreateTxWalletTest(BitcoinTestFramework):
    def set_test_params(self):
        self.setup_clean_chain = True
        self.num_nodes = 1

    def skip_test_if_missing_module(self):
        self.skip_if_no_wallet()

    def run_test(self):
        self.log.info('Create some old blocks')
        self.nodes[0].setmocktime(TIME_GENESIS_BLOCK)
        self.generate(self.nodes[0], 200)
        self.nodes[0].setmocktime(0)

        self.test_anti_fee_sniping()
        self.test_tx_size_too_large()
        self.test_create_too_long_mempool_chain()

    def test_anti_fee_sniping(self):
        self.log.info('Check that we have some (old) blocks and that anti-fee-sniping is disabled')
        assert_equal(self.nodes[0].getblockchaininfo()['blocks'], 200)
        txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
        tx = self.nodes[0].gettransaction(txid=txid, verbose=True)['decoded']
        assert_equal(tx['locktime'], 0)

        self.log.info('Check that anti-fee-sniping is enabled when we mine a recent block')
        self.generate(self.nodes[0], 1)
        txid = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
        tx = self.nodes[0].gettransaction(txid=txid, verbose=True)['decoded']
        assert 0 < tx['locktime'] <= 201

    def test_tx_size_too_large(self):
        # More than 10kB of outputs, so that we hit -maxtxfee with a high feerate
        outputs = [{self.nodes[0].getnewaddress(address_type='bech32'): 0.000025} for _ in range(400)]
        raw_tx = self.nodes[0].createrawtransaction(inputs=[], outputs=outputs)
        output_dict = {}
        for output in outputs:
            output_dict.update(output)

        for fee_setting in ['-minrelaytxfee=0.01', '-mintxfee=0.01', '-paytxfee=0.01']:
            self.log.info('Check maxtxfee in combination with {}'.format(fee_setting))
            self.restart_node(0, extra_args=[fee_setting])
            assert_raises_rpc_error(
                -6,
                "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
                lambda: self.nodes[0].sendmany(dummy="", amounts=output_dict),
            )
            assert_raises_rpc_error(
                -4,
                "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
                lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
            )

        self.log.info('Check maxtxfee in combination with settxfee')
        self.restart_node(0)
        self.nodes[0].settxfee(0.01)
        assert_raises_rpc_error(
            -6,
            "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
            lambda: self.nodes[0].sendmany(dummy="", amounts=output_dict),
        )
        assert_raises_rpc_error(
            -4,
            "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)",
            lambda: self.nodes[0].fundrawtransaction(hexstring=raw_tx),
        )
        self.nodes[0].settxfee(0)

    def test_create_too_long_mempool_chain(self):
        self.log.info('Check too-long mempool chain error')
        df_wallet = self.nodes[0].get_wallet_rpc(self.default_wallet_name)

        self.nodes[0].createwallet("too_long")
        test_wallet = self.nodes[0].get_wallet_rpc("too_long")

        tx_data = df_wallet.send(outputs=[{test_wallet.getnewaddress(): 25}], options={"change_position": 0})
        txid = tx_data['txid']
        vout = 1

        options = {"change_position": 0, "add_inputs": False}
        for i in range(1, 25):
            options['inputs'] = [{'txid': txid, 'vout': vout}]
            tx_data = test_wallet.send(outputs=[{test_wallet.getnewaddress(): 25 - i}], options=options)
            txid = tx_data['txid']

        options = {"include_unsafe": True, 'add_inputs': True}
        # Sending one more chained transaction will fail
        assert_raises_rpc_error(-4, "Insufficient funds",
                                test_wallet.send, outputs=[{test_wallet.getnewaddress(): 0.3}], options=options)

        test_wallet.unloadwallet()



if __name__ == '__main__':
    CreateTxWalletTest().main()
