# coding: utf-8

# Python libs
from __future__ import absolute_import

from collections import namedtuple

# Salt libs
import salt.beacons.diskusage as diskusage
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.mock import MagicMock, Mock, patch

# Salt testing libs
from tests.support.unit import TestCase

STUB_DISK_PARTITION = [
    namedtuple("partition", "device mountpoint fstype, opts")(
        "tmpfs", "/mnt/tmp", "tmpfs", "rw,nosuid,nodev,relatime,size=10240k"
    ),
    namedtuple("partition", "device mountpoint fstype, opts")(
        "/dev/disk0s2", "/", "hfs", "rw,local,rootfs,dovolfs,journaled,multilabel"
    ),
]

WINDOWS_STUB_DISK_PARTITION = [
    namedtuple("partition", "device mountpoint fstype, opts")(
        "C:\\", "C:\\", "NTFS", "rw,fixed"
    ),
    namedtuple("partition", "device mountpoint fstype, opts")(
        "D:\\", "D:\\", "CDFS", "ro,cdrom"
    ),
]

STUB_DISK_USAGE = [
    namedtuple("usage", "total used free percent")(1000, 500, 500, 50),
    namedtuple("usage", "total used free percent")(100, 75, 25, 25),
]

WINDOWS_STUB_DISK_USAGE = namedtuple("usage", "total used free percent")(
    1000, 500, 500, 50
)


class DiskUsageBeaconTestCase(TestCase, LoaderModuleMockMixin):
    """
    Test case for salt.beacons.adb
    """

    def setup_loader_modules(self):
        return {}

    def test_non_list_config(self):
        config = {}

        ret = diskusage.validate(config)

        self.assertEqual(
            ret, (False, "Configuration for diskusage beacon must be a list.")
        )

    def test_empty_config(self):
        config = [{}]

        ret = diskusage.validate(config)

        self.assertEqual(ret, (True, "Valid beacon configuration"))

    def test_diskusage_match(self):
        disk_usage_mock = Mock(side_effect=STUB_DISK_USAGE)
        with patch(
            "salt.utils.platform.is_windows", MagicMock(return_value=False)
        ), patch(
            "psutil.disk_partitions", MagicMock(return_value=STUB_DISK_PARTITION)
        ), patch(
            "psutil.disk_usage", disk_usage_mock
        ):
            config = [{"/": "50%"}]

            ret = diskusage.validate(config)

            self.assertEqual(ret, (True, "Valid beacon configuration"))

            ret = diskusage.beacon(config)
            self.assertEqual(ret, [{"diskusage": 50, "mount": "/"}])

    def test_diskusage_nomatch(self):
        disk_usage_mock = Mock(side_effect=STUB_DISK_USAGE)
        with patch(
            "salt.utils.platform.is_windows", MagicMock(return_value=False)
        ), patch(
            "psutil.disk_partitions", MagicMock(return_value=STUB_DISK_PARTITION)
        ), patch(
            "psutil.disk_usage", disk_usage_mock
        ):
            config = [{"/": "70%"}]

            ret = diskusage.validate(config)

            self.assertEqual(ret, (True, "Valid beacon configuration"))

            ret = diskusage.beacon(config)
            self.assertNotEqual(ret, [{"diskusage": 50, "mount": "/"}])

    def test_diskusage_match_regex(self):
        disk_usage_mock = Mock(side_effect=STUB_DISK_USAGE)
        with patch(
            "salt.utils.platform.is_windows", MagicMock(return_value=False)
        ), patch(
            "psutil.disk_partitions", MagicMock(return_value=STUB_DISK_PARTITION)
        ), patch(
            "psutil.disk_usage", disk_usage_mock
        ):
            config = [{r"^\/": "50%"}]

            ret = diskusage.validate(config)

            self.assertEqual(ret, (True, "Valid beacon configuration"))

            ret = diskusage.beacon(config)
            self.assertEqual(ret, [{"diskusage": 50, "mount": "/"}])

    def test_diskusage_windows_single_slash(self):
        r"""
        This tests new behavior (C:\)
        """
        disk_usage_mock = Mock(return_value=WINDOWS_STUB_DISK_USAGE)
        with patch("salt.utils.platform.is_windows", MagicMock(return_value=True)):
            with patch(
                "psutil.disk_partitions",
                MagicMock(return_value=WINDOWS_STUB_DISK_PARTITION),
            ), patch("psutil.disk_usage", disk_usage_mock):
                config = [{"C:\\": "50%"}]

                ret = diskusage.validate(config)

                self.assertEqual(ret, (True, "Valid beacon configuration"))

                ret = diskusage.beacon(config)
                self.assertEqual(ret, [{"diskusage": 50, "mount": "C:\\"}])

    def test_diskusage_windows_double_slash(self):
        """
        This tests original behavior (C:\\)
        """
        disk_usage_mock = Mock(return_value=WINDOWS_STUB_DISK_USAGE)
        with patch("salt.utils.platform.is_windows", MagicMock(return_value=True)):
            with patch(
                "psutil.disk_partitions",
                MagicMock(return_value=WINDOWS_STUB_DISK_PARTITION),
            ), patch("psutil.disk_usage", disk_usage_mock):
                config = [{"C:\\\\": "50%"}]

                ret = diskusage.validate(config)

                self.assertEqual(ret, (True, "Valid beacon configuration"))

                ret = diskusage.beacon(config)
                self.assertEqual(ret, [{"diskusage": 50, "mount": "C:\\"}])

    def test_diskusage_windows_lowercase(self):
        r"""
        This tests lowercase drive letter (c:\)
        """
        disk_usage_mock = Mock(return_value=WINDOWS_STUB_DISK_USAGE)
        with patch("salt.utils.platform.is_windows", MagicMock(return_value=True)):
            with patch(
                "psutil.disk_partitions",
                MagicMock(return_value=WINDOWS_STUB_DISK_PARTITION),
            ), patch("psutil.disk_usage", disk_usage_mock):
                config = [{"c:\\": "50%"}]

                ret = diskusage.validate(config)

                self.assertEqual(ret, (True, "Valid beacon configuration"))

                ret = diskusage.beacon(config)
                self.assertEqual(ret, [{"diskusage": 50, "mount": "C:\\"}])

    def test_diskusage_windows_match_regex(self):
        disk_usage_mock = Mock(return_value=WINDOWS_STUB_DISK_USAGE)
        with patch("salt.utils.platform.is_windows", MagicMock(return_value=True)):
            with patch(
                "psutil.disk_partitions",
                MagicMock(return_value=WINDOWS_STUB_DISK_PARTITION),
            ), patch("psutil.disk_usage", disk_usage_mock):
                config = [{"^[a-zA-Z]:\\": "50%"}]

                ret = diskusage.validate(config)

                self.assertEqual(ret, (True, "Valid beacon configuration"))

                ret = diskusage.beacon(config)
                _expected = [
                    {u"diskusage": 50, u"mount": "C:\\"},
                    {u"diskusage": 50, u"mount": "D:\\"},
                ]
                self.assertEqual(ret, _expected)