# Copyright (C) 2016 The python-bitcoinlib developers
#
# This file is part of python-bitcointx.
#
# It is subject to the license terms in the LICENSE file found in the top-level
# directory of this distribution.
#
# No part of python-bitcointx, including this file, may be copied, modified,
# propagated, or distributed except according to the terms contained in the
# LICENSE file.

# pylama:ignore=E501

import unittest

from bitcointx.core import x, coins_to_satoshi, CTransaction
from bitcointx.core.script import (
    CScript, SignatureHash, SIGHASH_ALL, SIGVERSION_WITNESS_V0,
    SIGHASH_SINGLE, SIGHASH_ANYONECANPAY, SIGHASH_NONE
)
from bitcointx.wallet import CBech32BitcoinAddress, CCoinAddress


# Test serialization


class Test_Segwit(unittest.TestCase):

    # Test BIP 143 vectors
    def test_p2wpkh_signaturehash(self) -> None:
        unsigned_tx = x('0100000002fff7f7881a8099afa6940d42d1e7f6362bec38171ea3edf433541db4e4ad969f0000000000eeffffffef51e1b804cc89d182d279655c3aa89e815b1b309fe287d9b2b55d57b90ec68a0100000000ffffffff02202cb206000000001976a9148280b37df378db99f66f85c95a783a76ac7a6d5988ac9093510d000000001976a9143bde42dbee7e4dbe6a21b2d50ce2f0167faa815988ac11000000')
        scriptpubkey = CScript(x('00141d0f172a0ecb48aee1be1f2687d2963ae33f71a1'))
        value = coins_to_satoshi(6)

        address = CBech32BitcoinAddress.from_scriptPubKey(scriptpubkey)
        self.assertEqual(SignatureHash(address.to_redeemScript(), CTransaction.deserialize(unsigned_tx),
                                       1, SIGHASH_ALL, value, SIGVERSION_WITNESS_V0),
                         x('c37af31116d1b27caf68aae9e3ac82f1477929014d5b917657d0eb49478cb670'))

    def test_p2sh_p2wpkh_signaturehash(self) -> None:
        unsigned_tx = x('0100000001db6b1b20aa0fd7b23880be2ecbd4a98130974cf4748fb66092ac4d3ceb1a54770100000000feffffff02b8b4eb0b000000001976a914a457b684d7f0d539a46a45bbc043f35b59d0d96388ac0008af2f000000001976a914fd270b1ee6abcaea97fea7ad0402e8bd8ad6d77c88ac92040000')
        scriptpubkey = CScript(x('001479091972186c449eb1ded22b78e40d009bdf0089'))
        value = coins_to_satoshi(10)

        address = CCoinAddress.from_scriptPubKey(scriptpubkey)
        self.assertEqual(SignatureHash(address.to_redeemScript(), CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_ALL, value, SIGVERSION_WITNESS_V0),
                         x('64f3b0f4dd2bb3aa1ce8566d220cc74dda9df97d8490cc81d89d735c92e59fb6'))

    def test_p2wsh_signaturehash1(self) -> None:
        unsigned_tx = x('0100000002fe3dc9208094f3ffd12645477b3dc56f60ec4fa8e6f5d67c565d1c6b9216b36e0000000000ffffffff0815cf020f013ed6cf91d29f4202e8a58726b1ac6c79da47c23d1bee0a6925f80000000000ffffffff0100f2052a010000001976a914a30741f8145e5acadf23f751864167f32e0963f788ac00000000')
        value2 = coins_to_satoshi(49)
        scriptcode1 = CScript(x('21026dccc749adc2a9d0d89497ac511f760f45c47dc5ed9cf352a58ac706453880aeadab210255a9626aebf5e29c0e6538428ba0d1dcf6ca98ffdf086aa8ced5e0d0215ea465ac'))
        # This is the same script with everything up to the last executed OP_CODESEPARATOR, including that
        # OP_CODESEPARATOR removed
        scriptcode2 = CScript(x('210255a9626aebf5e29c0e6538428ba0d1dcf6ca98ffdf086aa8ced5e0d0215ea465ac'))

        self.assertEqual(SignatureHash(scriptcode1, CTransaction.deserialize(unsigned_tx),
                                       1, SIGHASH_SINGLE, value2, SIGVERSION_WITNESS_V0),
                         x('82dde6e4f1e94d02c2b7ad03d2115d691f48d064e9d52f58194a6637e4194391'))
        self.assertEqual(SignatureHash(scriptcode2, CTransaction.deserialize(unsigned_tx),
                                       1, SIGHASH_SINGLE, value2, SIGVERSION_WITNESS_V0),
                         x('fef7bd749cce710c5c052bd796df1af0d935e59cea63736268bcbe2d2134fc47'))

    def test_p2wsh_signaturehash2(self) -> None:
        unsigned_tx = x('0100000002e9b542c5176808107ff1df906f46bb1f2583b16112b95ee5380665ba7fcfc0010000000000ffffffff80e68831516392fcd100d186b3c2c7b95c80b53c77e77c35ba03a66b429a2a1b0000000000ffffffff0280969800000000001976a914de4b231626ef508c9a74a8517e6783c0546d6b2888ac80969800000000001976a9146648a8cd4531e1ec47f35916de8e259237294d1e88ac00000000')
        value1 = coins_to_satoshi(0.16777215)
        scriptcode1 = CScript(x('0063ab68210392972e2eb617b2388771abe27235fd5ac44af8e61693261550447a4c3e39da98ac'))
        value2 = coins_to_satoshi(0.16777215)
        scriptcode2 = CScript(x('68210392972e2eb617b2388771abe27235fd5ac44af8e61693261550447a4c3e39da98ac'))

        self.assertEqual(SignatureHash(scriptcode1, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_SINGLE | SIGHASH_ANYONECANPAY, value1, SIGVERSION_WITNESS_V0),
                         x('e9071e75e25b8a1e298a72f0d2e9f4f95a0f5cdf86a533cda597eb402ed13b3a'))
        self.assertEqual(SignatureHash(scriptcode2, CTransaction.deserialize(unsigned_tx),
                                       1, SIGHASH_SINGLE | SIGHASH_ANYONECANPAY, value2, SIGVERSION_WITNESS_V0),
                         x('cd72f1f1a433ee9df816857fad88d8ebd97e09a75cd481583eb841c330275e54'))

    def test_p2sh_p2wsh_signaturehash(self) -> None:
        unsigned_tx = x('010000000136641869ca081e70f394c6948e8af409e18b619df2ed74aa106c1ca29787b96e0100000000ffffffff0200e9a435000000001976a914389ffce9cd9ae88dcc0631e88a821ffdbe9bfe2688acc0832f05000000001976a9147480a33f950689af511e6e84c138dbbd3c3ee41588ac00000000')

        value = coins_to_satoshi(9.87654321)
        witnessscript = CScript(x('56210307b8ae49ac90a048e9b53357a2354b3334e9c8bee813ecb98e99a7e07e8c3ba32103b28f0c28bfab54554ae8c658ac5c3e0ce6e79ad336331f78c428dd43eea8449b21034b8113d703413d57761b8b9781957b8c0ac1dfe69f492580ca4195f50376ba4a21033400f6afecb833092a9a21cfdf1ed1376e58c5d1f47de74683123987e967a8f42103a6d48b1131e94ba04d9737d61acdaa1322008af9602b3b14862c07a1789aac162102d8b661b0b3302ee2f162b09e07a55ad5dfbe673a9f01d9f0c19617681024306b56ae'))

        self.assertEqual(SignatureHash(witnessscript, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_ALL, value, SIGVERSION_WITNESS_V0),
                         x('185c0be5263dce5b4bb50a047973c1b6272bfbd0103a89444597dc40b248ee7c'))
        self.assertEqual(SignatureHash(witnessscript, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_NONE, value, SIGVERSION_WITNESS_V0),
                         x('e9733bc60ea13c95c6527066bb975a2ff29a925e80aa14c213f686cbae5d2f36'))
        self.assertEqual(SignatureHash(witnessscript, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_SINGLE, value, SIGVERSION_WITNESS_V0),
                         x('1e1f1c303dc025bd664acb72e583e933fae4cff9148bf78c157d1e8f78530aea'))
        self.assertEqual(SignatureHash(witnessscript, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_ALL | SIGHASH_ANYONECANPAY, value, SIGVERSION_WITNESS_V0),
                         x('2a67f03e63a6a422125878b40b82da593be8d4efaafe88ee528af6e5a9955c6e'))
        self.assertEqual(SignatureHash(witnessscript, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_NONE | SIGHASH_ANYONECANPAY, value, SIGVERSION_WITNESS_V0),
                         x('781ba15f3779d5542ce8ecb5c18716733a5ee42a6f51488ec96154934e2c890a'))
        self.assertEqual(SignatureHash(witnessscript, CTransaction.deserialize(unsigned_tx),
                                       0, SIGHASH_SINGLE | SIGHASH_ANYONECANPAY, value, SIGVERSION_WITNESS_V0),
                         x('511e8e52ed574121fc1b654970395502128263f62662e076dc6baf05c2e6a99b'))
