"""Tests related to uaclient.entitlement.base module."""

import copy
import itertools
import os.path
from types import MappingProxyType

import mock
import pytest

from uaclient import apt, config, status
from uaclient.entitlements.cc import CC_README, CommonCriteriaEntitlement
from uaclient.entitlements.tests.conftest import machine_token

M_REPOPATH = "uaclient.entitlements.repo."

CC_MACHINE_TOKEN = machine_token(
    entitlement_type="cc-eal",
    obligations={"enableByDefault": False},
    entitled=True,
    directives={
        "aptURL": "http://CC",
        "aptKey": "APTKEY",
        "suites": ["xenial"],
        "additionalPackages": ["ubuntu-commoncriteria"],
    },
    affordances={
        "architectures": ["x86_64", "ppc64le", "s390x"],
        "series": ["xenial"],
    },
)


PLATFORM_INFO_SUPPORTED = MappingProxyType(
    {
        "arch": "s390x",
        "series": "xenial",
        "kernel": "4.15.0-00-generic",
        "version": "16.04 LTS (Xenial Xerus)",
    }
)


class TestCommonCriteriaEntitlementUserFacingStatus:
    @pytest.mark.parametrize(
        "arch,series,version,details",
        (
            (
                "arm64",
                "xenial",
                "16.04 LTS (Xenial Xerus)",
                "CC EAL2 is not available for platform arm64.\n"
                "Supported platforms are: x86_64, ppc64le, s390x.",
            ),
            (
                "s390x",
                "trusty",
                "14.04 LTS (Trusty Tahr)",
                "CC EAL2 is not available for Ubuntu 14.04 LTS"
                " (Trusty Tahr).",
            ),
        ),
    )
    @mock.patch(M_REPOPATH + "os.getuid", return_value=0)
    @mock.patch("uaclient.util.get_platform_info")
    def test_inapplicable_on_invalid_affordances(
        self, m_platform_info, m_getuid, arch, series, version, details, tmpdir
    ):
        """Test invalid affordances result in inapplicable status."""
        unsupported_info = copy.deepcopy(dict(PLATFORM_INFO_SUPPORTED))
        unsupported_info["arch"] = arch
        unsupported_info["series"] = series
        unsupported_info["version"] = version
        m_platform_info.return_value = unsupported_info
        cfg = config.UAConfig(cfg={"data_dir": tmpdir.strpath})
        cfg.write_cache("machine-token", CC_MACHINE_TOKEN)
        entitlement = CommonCriteriaEntitlement(cfg)
        uf_status, uf_status_details = entitlement.user_facing_status()
        assert status.UserFacingStatus.INAPPLICABLE == uf_status
        assert details == uf_status_details.msg


class TestCommonCriteriaEntitlementCanEnable:
    @mock.patch("uaclient.util.subp", return_value=("", ""))
    @mock.patch("uaclient.util.get_platform_info")
    def test_can_enable_true_on_entitlement_inactive(
        self, m_platform_info, _m_subp, capsys, tmpdir
    ):
        """When entitlement is INACTIVE, can_enable returns True."""
        m_platform_info.return_value = PLATFORM_INFO_SUPPORTED
        cfg = config.UAConfig(cfg={"data_dir": tmpdir.strpath})
        cfg.write_cache("machine-token", CC_MACHINE_TOKEN)
        entitlement = CommonCriteriaEntitlement(cfg, allow_beta=True)
        uf_status, uf_status_details = entitlement.user_facing_status()
        assert status.UserFacingStatus.INACTIVE == uf_status
        details = "{} is not configured".format(entitlement.title)
        assert details == uf_status_details.msg
        assert (True, None) == entitlement.can_enable()
        assert ("", "") == capsys.readouterr()


class TestCommonCriteriaEntitlementEnable:

    # Paramterize True/False for apt_transport_https and ca_certificates
    @pytest.mark.parametrize(
        "apt_transport_https,ca_certificates",
        itertools.product([False, True], repeat=2),
    )
    @mock.patch("uaclient.apt.setup_apt_proxy")
    @mock.patch("uaclient.util.should_reboot")
    @mock.patch("uaclient.util.subp")
    @mock.patch("uaclient.util.get_platform_info")
    def test_enable_configures_apt_sources_and_auth_files(
        self,
        m_platform_info,
        m_subp,
        m_should_reboot,
        m_setup_apt_proxy,
        capsys,
        tmpdir,
        apt_transport_https,
        ca_certificates,
    ):
        """When entitled, configure apt repo auth token, pinning and url."""
        m_subp.return_value = ("fakeout", "")
        m_should_reboot.return_value = False
        original_exists = os.path.exists

        def fake_platform(key=None):
            if key == "series":
                return PLATFORM_INFO_SUPPORTED[key]
            return PLATFORM_INFO_SUPPORTED

        def exists(path):
            if path == apt.APT_METHOD_HTTPS_FILE:
                return not apt_transport_https
            elif path == apt.CA_CERTIFICATES_FILE:
                return not ca_certificates
            elif not path.startswith(tmpdir.strpath):
                raise Exception(
                    "os.path.exists call outside of tmpdir: {}".format(path)
                )
            return original_exists(path)

        m_platform_info.side_effect = fake_platform
        cfg = config.UAConfig(cfg={"data_dir": tmpdir.strpath})
        cfg.write_cache("machine-token", CC_MACHINE_TOKEN)
        entitlement = CommonCriteriaEntitlement(cfg, allow_beta=True)

        with mock.patch("uaclient.apt.add_auth_apt_repo") as m_add_apt:
            with mock.patch("uaclient.apt.add_ppa_pinning") as m_add_pin:
                with mock.patch(
                    M_REPOPATH + "os.path.exists", side_effect=exists
                ):
                    assert (True, None) == entitlement.enable()

        add_apt_calls = [
            mock.call(
                "/etc/apt/sources.list.d/ubuntu-cc-eal.list",
                "http://CC",
                "{}-token".format(entitlement.name),
                ["xenial"],
                entitlement.repo_key_file,
            )
        ]

        subp_apt_cmds = [
            mock.call(
                ["apt-cache", "policy"],
                capture=True,
                retry_sleeps=apt.APT_RETRIES,
                env={},
            )
        ]

        prerequisite_pkgs = []
        if apt_transport_https:
            prerequisite_pkgs.append("apt-transport-https")
        if ca_certificates:
            prerequisite_pkgs.append("ca-certificates")

        if prerequisite_pkgs:
            expected_stdout = "Installing prerequisites: {}\n".format(
                ", ".join(prerequisite_pkgs)
            )
            subp_apt_cmds.append(
                mock.call(
                    ["apt-get", "install", "--assume-yes"] + prerequisite_pkgs,
                    capture=True,
                    retry_sleeps=apt.APT_RETRIES,
                    env={},
                )
            )
        else:
            expected_stdout = ""

        subp_apt_cmds.extend(
            [
                mock.call(
                    ["apt-get", "update"],
                    capture=True,
                    retry_sleeps=apt.APT_RETRIES,
                    env={},
                ),
                mock.call(
                    [
                        "apt-get",
                        "install",
                        "--assume-yes",
                        "--allow-downgrades",
                        '-o Dpkg::Options::="--force-confdef"',
                        '-o Dpkg::Options::="--force-confold"',
                    ]
                    + entitlement.packages,
                    capture=True,
                    retry_sleeps=apt.APT_RETRIES,
                    env={"DEBIAN_FRONTEND": "noninteractive"},
                ),
            ]
        )

        assert add_apt_calls == m_add_apt.call_args_list
        # No apt pinning for cc
        assert [] == m_add_pin.call_args_list
        assert 1 == m_setup_apt_proxy.call_count
        assert 1 == m_should_reboot.call_count
        assert subp_apt_cmds == m_subp.call_args_list
        expected_stdout += "\n".join(
            [
                "Updating package lists",
                "(This will download more than 500MB of packages, so may take"
                " some time.)",
                "Installing CC EAL2 packages",
                "CC EAL2 enabled",
                "Please follow instructions in {} to configure EAL2\n".format(
                    CC_README
                ),
            ]
        )
        assert (expected_stdout, "") == capsys.readouterr()
