import pytest


def read_lines(path):
    with path.open("r") as fh:
        content = fh.read().strip()
        lines = content.splitlines()
        return [line.strip() for line in lines]


@pytest.mark.parametrize(
    "value, expected",
    [
        ("no line break", "KEY = no line break"),
        ("with\nline\nbreak", "KEY = with\n\tline\n\tbreak"),
    ],
)
def test_authz_format_ini_option(value, expected):
    from elab_users.authz import format_ini_option

    result = format_ini_option("KEY", value)

    assert result == expected


def test_authz_parser_init():
    import configparser

    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()

    assert isinstance(parser, configparser.ConfigParser)
    assert parser.elab_users == {}
    assert parser.original_path is None


def test_authz_parser_optionxfrom():
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()

    assert parser.optionxform(123) == "123"


def test_authz_parser_read(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()
    parser.read(example_authz)

    assert parser.original_path == example_authz
    assert parser.elab_users != {}


def test_authz_parser_from_file(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)

    assert isinstance(parser, AuthzConfigParser)
    assert parser.original_path == example_authz
    assert parser.elab_users != {}


def test_authz_parser_write_to_file_raises_error():
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()

    with pytest.raises(IOError):
        parser.write_to_file(path=None)


def test_authz_parser_write_to_file_uses_original_path(
    example_authz, example_empty_file
):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)
    parser.original_path = example_empty_file
    parser.write_to_file(path=None)

    assert example_empty_file.is_file()


def test_authz_parser_write_to_file_custom_path(
    example_authz, example_empty_file
):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)
    parser.write_to_file(path=example_empty_file)

    assert example_empty_file.is_file()


def test_authz_parser_write(example_authz, example_empty_file):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)
    with open(example_empty_file, "w") as fh:
        parser.write(fh)

    original = read_lines(example_authz)
    created = read_lines(example_empty_file)
    assert original == created


def test_authz_parser_extract_user_info_from_config(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()

    super(type(parser), parser).read(example_authz)
    assert parser.elab_users == {}

    parser._extract_user_info_from_config()
    assert parser.elab_users != {}


@pytest.mark.parametrize(
    "name, group",
    [
        ("OswaldPrucker", "administrators"),
        ("AlexanderDietz", "users"),
        ("UrmilShah", "restricted"),
        ("CamillaOestevold", "alumni"),
    ],
)
def test_authz_parser_extract_group_definitions(name, group, example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()

    super(type(parser), parser).read(example_authz)
    parser._extract_group_definitions()

    user = parser.elab_users[name]
    assert user.group == group


@pytest.mark.parametrize(
    "name, read, write",
    [
        ("OswaldPrucker", [], ["OswaldPrucker"]),
        ("AlexanderDietz", [], ["AlexanderDietz"]),
        ("UrmilShah", ["AndreasEvers"], ["UrmilShah"]),
    ],
)
def test_authz_parser_extract_individual_acls(
    name, read, write, example_authz
):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser()

    super(type(parser), parser).read(example_authz)
    parser._extract_group_definitions()
    parser._extract_individual_acls()

    user = parser.elab_users[name]
    assert user.read_acl == set(read)
    assert user.write_acl == set(write)


def test_authz_parser_group_users(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)

    groups = parser.group_users()

    assert len(groups) == 4
    assert len(groups["administrators"]) == 2
    assert len(groups["users"]) == 54
    assert len(groups["restricted"]) == 5
    assert len(groups["alumni"]) == 62


def test_authz_parser_add_journal_acl_for(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)

    user = parser.add_journal_acl_for("JaneDoe", "users")

    assert user.name == "JaneDoe"
    assert user.group == "users"
    assert parser.elab_users["JaneDoe"] == user
    assert "JaneDoe:/" in parser.sections()
    items = parser.items("JaneDoe:/")
    assert sorted(items) == [
        ("@administrators", "rw"),
        ("@alumni", ""),
        ("@restricted", ""),
        ("@users", "r"),
        ("JaneDoe", "rw"),
    ]


def test_authz_parser_move_user_to_alumni(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)

    user = parser.move_user_to_alumni("UrmilShah")

    assert user.name == "UrmilShah"
    assert user.group == "alumni"
    assert user.write_acl == set()
    assert user.read_acl == set()

    for group, userlist in parser.items("groups"):
        if group == "alumni":
            assert "UrmilShah" in userlist
        else:
            assert "UrmilShah" not in userlist


def test_authz_parser_update_user_group_config(example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)
    parser.elab_users["UrmilShah"].group = "alumni"

    parser._update_user_group_config()

    for group, userlist in parser.items("groups"):
        if group == "alumni":
            assert "UrmilShah" in userlist
        else:
            assert "UrmilShah" not in userlist


@pytest.mark.parametrize(
    "elab, read, write",
    [
        ("AlexeyKopyshev:/", ["@users"], ["@administrators"]),
        (
            "AndreasEvers:/",
            ["@users", "UrmilShah"],
            ["@administrators"],
        ),
        (
            "UrmilShah:/",
            ["@users"],
            ["@administrators", "UrmilShah"],
        ),
    ],
)
def test_authz_parser_get_journal_info(elab, read, write, example_authz):
    from elab_users.authz import AuthzConfigParser

    parser = AuthzConfigParser.from_file(example_authz)

    info = parser.get_journal_info(elab)
    assert info == {"r": read, "rw": write}