# -*- coding: utf-8 -*-
"""
    :codeauthor: Rupesh Tare <rupesht@saltstack.com>
"""
# Import Python libs
from __future__ import absolute_import, print_function, unicode_literals

import os

# Import Salt Libs
import salt.modules.environ as environ

# Import Salt Testing Libs
from tests.support.mixins import LoaderModuleMockMixin
from tests.support.mock import MagicMock, patch
from tests.support.unit import TestCase


class EnvironTestCase(TestCase, LoaderModuleMockMixin):
    """
    Test cases for salt.modules.environ
    """

    def setup_loader_modules(self):
        return {environ: {}}

    def test_setval(self):
        """
        Test for set a single salt process environment variable. Returns True
        on success.
        """
        mock = MagicMock(return_value=None)
        with patch.dict(os.environ, {}):
            self.assertEqual(environ.setval("key", False, True), None)

        mock = MagicMock(side_effect=Exception())
        with patch.dict(os.environ, {}):
            self.assertFalse(environ.setval("key", False, True))

        mock_environ = {}
        with patch.dict(os.environ, mock_environ):
            self.assertEqual(environ.setval("key", False), "")

        with patch.dict(os.environ, mock_environ):
            self.assertFalse(environ.setval("key", True))

    def test_set_val_permanent(self):
        with patch.dict(os.environ, {}), patch.dict(
            environ.__utils__,
            {"reg.set_value": MagicMock(), "reg.delete_value": MagicMock()},
        ), patch("salt.utils.platform.is_windows", return_value=True):

            environ.setval("key", "Test", permanent=True)
            environ.__utils__["reg.set_value"].assert_called_with(
                "HKCU", "Environment", "key", "Test"
            )

    def test_set_val_permanent_false_unsets(self):
        with patch.dict(os.environ, {}), patch.dict(
            environ.__utils__,
            {"reg.set_value": MagicMock(), "reg.delete_value": MagicMock()},
        ), patch("salt.utils.platform.is_windows", return_value=True):

            environ.setval("key", False, false_unsets=True, permanent=True)
            environ.__utils__["reg.set_value"].assert_not_called()
            environ.__utils__["reg.delete_value"].assert_called_with(
                "HKCU", "Environment", "key"
            )

    def test_set_val_permanent_hklm(self):
        with patch.dict(os.environ, {}), patch.dict(
            environ.__utils__,
            {"reg.set_value": MagicMock(), "reg.delete_value": MagicMock()},
        ), patch("salt.utils.platform.is_windows", return_value=True):

            key = r"SYSTEM\CurrentControlSet\Control\Session Manager\Environment"
            environ.setval("key", "Test", permanent="HKLM")
            environ.__utils__["reg.set_value"].assert_called_with(
                "HKLM", key, "key", "Test"
            )

    def test_setenv(self):
        """
        Set multiple salt process environment variables from a dict.
        Returns a dict.
        """
        mock_environ = {"KEY": "value"}
        with patch.dict(os.environ, mock_environ):
            self.assertFalse(environ.setenv("environ"))

        with patch.dict(os.environ, mock_environ):
            self.assertFalse(environ.setenv({"A": True}, False, True, False))

        with patch.dict(os.environ, mock_environ):
            mock_setval = MagicMock(return_value=None)
            with patch.object(environ, "setval", mock_setval):
                self.assertEqual(environ.setenv({}, False, True, False)["KEY"], None)

    def test_get(self):
        """
        Get a single salt process environment variable.
        """
        self.assertFalse(environ.get(True))

        self.assertEqual(environ.get("key"), "")

    def test_has_value(self):
        """
        Determine whether the key exists in the current salt process
        environment dictionary. Optionally compare the current value
        of the environment against the supplied value string.
        """
        mock_environ = {}
        with patch.dict(os.environ, mock_environ):
            self.assertFalse(environ.has_value(True))

            os.environ["salty"] = "yes"
            self.assertTrue(environ.has_value("salty", "yes"))

            os.environ["too_salty"] = "no"
            self.assertFalse(environ.has_value("too_salty", "yes"))

            self.assertFalse(environ.has_value("key", "value"))

            os.environ["key"] = "value"
            self.assertTrue(environ.has_value("key"))

    def test_item(self):
        """
        Get one or more salt process environment variables.
        Returns a dict.
        """
        self.assertEqual(environ.item(None), {})

    def test_items(self):
        """
        Return a dict of the entire environment set for the salt process
        """
        self.assertNotEqual(list(environ.items()), [])
