# Copyright (C) 2020  The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information

from swh.model import hashutil
from swh.storage.utils import (
    extract_collision_hash, content_hex_hashes, content_bytes_hashes
)


def test_extract_collision_hash():
    for msg, expected_result in [
            (
                'Key (sha1)=(\\x34973274ccef6ab4dfaaf86599792fa9c3fe4689) ...',
                ('sha1', hashutil.hash_to_bytes(
                    '34973274ccef6ab4dfaaf86599792fa9c3fe4689')),
            ),
            (
                'Key (sha1_git)=(\\x34973274ccef6ab4dfaaf86599792fa9c3fe4699) already exists',  # noqa
                ('sha1_git', hashutil.hash_to_bytes(
                    '34973274ccef6ab4dfaaf86599792fa9c3fe4699')),
            ),
            (
                'Key (sha256)=(\\x673650f936cb3b0a2f93ce09d81be10748b1b203c19e8176b4eefc1964a0cf3a) ...',  # noqa
                ('sha256', hashutil.hash_to_bytes(
                    '673650f936cb3b0a2f93ce09d81be10748b1b203c19e8176b4eefc1964a0cf3a'))  # noqa
            ),
            (
                'Key (blake2s)=(\\xd5fe1939576527e42cfd76a9455a2432fe7f56669564577dd93c4280e76d661d) ...',  # noqa
                ('blake2s', hashutil.hash_to_bytes(
                    'd5fe1939576527e42cfd76a9455a2432fe7f56669564577dd93c4280e76d661d'))  # noqa
            ),
    ]:
        assert extract_collision_hash(msg) == expected_result

    assert extract_collision_hash('Nothing matching') is None


def test_content_hex_hashes():
    input_content = {
        "blake2s256": hashutil.hash_to_bytes(
            "8f677e3214ca8b2acad91884a1571ef3f12b786501f9a6bedfd6239d82095dd2"
        ),
        "sha1_git": hashutil.hash_to_bytes(
            "ba9aaa145ccd24ef760cf31c74d8f7ca1a2e47b0"),
        "sha256": hashutil.hash_to_bytes(
            "2bb787a73e37352f92383abe7e2902936d1059ad9f1ba6daaa9c1e58ee6970d0"
        ),
        "sha1": hashutil.hash_to_bytes(
            "38762cf7f55934b34d179ae6a4c80cadccbb7f0a"),
    }

    expected_content = {
        "blake2s256":
        "8f677e3214ca8b2acad91884a1571ef3f12b786501f9a6bedfd6239d82095dd2",
        "sha1_git": "ba9aaa145ccd24ef760cf31c74d8f7ca1a2e47b0",
        "sha256":
        "2bb787a73e37352f92383abe7e2902936d1059ad9f1ba6daaa9c1e58ee6970d0",
        "sha1": "38762cf7f55934b34d179ae6a4c80cadccbb7f0a"
    }

    actual_content = content_hex_hashes(input_content)

    assert len(actual_content) == len(expected_content)
    for algo in hashutil.DEFAULT_ALGORITHMS:
        assert actual_content[algo] == expected_content[algo]


def test_content_bytes_hashes():
    input_content = {
        "blake2s256":
        "8f677e3214ca8b2acad91884a1571ef3f12b786501f9a6bedfd6239d82095dd2",
        "sha1_git": "ba9aaa145ccd24ef760cf31c74d8f7ca1a2e47b0",
        "sha256":
        "2bb787a73e37352f92383abe7e2902936d1059ad9f1ba6daaa9c1e58ee6970d0",
        "sha1": "38762cf7f55934b34d179ae6a4c80cadccbb7f0a"
    }

    expected_content = {
        "blake2s256": hashutil.hash_to_bytes(
            "8f677e3214ca8b2acad91884a1571ef3f12b786501f9a6bedfd6239d82095dd2"
        ),
        "sha1_git": hashutil.hash_to_bytes(
            "ba9aaa145ccd24ef760cf31c74d8f7ca1a2e47b0"),
        "sha256": hashutil.hash_to_bytes(
            "2bb787a73e37352f92383abe7e2902936d1059ad9f1ba6daaa9c1e58ee6970d0"
        ),
        "sha1": hashutil.hash_to_bytes(
            "38762cf7f55934b34d179ae6a4c80cadccbb7f0a"),
    }

    actual_content = content_bytes_hashes(input_content)

    assert len(actual_content) == len(expected_content)
    for algo in hashutil.DEFAULT_ALGORITHMS:
        assert actual_content[algo] == expected_content[algo]