# -*- coding: utf-8 -*-
"""
    :codeauthor: Pedro Algarvio (pedro@algarvio.me)


    tests.integration.states.pip_state
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"""

from __future__ import absolute_import, print_function, unicode_literals

import errno
import glob
import os
import pprint
import shutil
import sys

import pytest
import salt.utils.files
import salt.utils.path
import salt.utils.platform
import salt.utils.versions
import salt.utils.win_dacl
import salt.utils.win_functions
import salt.utils.win_runas
from salt.exceptions import CommandExecutionError
from salt.ext import six
from salt.modules.virtualenv_mod import KNOWN_BINARY_NAMES
from tests.support.case import ModuleCase
from tests.support.helpers import (
    destructiveTest,
    patched_environ,
    requires_system_grains,
    skip_if_not_root,
    slowTest,
    with_system_user,
    with_tempdir,
)
from tests.support.mixins import SaltReturnAssertsMixin
from tests.support.runtests import RUNTIME_VARS
from tests.support.unit import skipIf

try:
    import pwd

    HAS_PWD = True
except ImportError:
    HAS_PWD = False


class VirtualEnv(object):
    def __init__(self, test, venv_dir):
        self.venv_dir = venv_dir
        self.test = test
        self.test.addCleanup(shutil.rmtree, self.venv_dir, ignore_errors=True)

    def __enter__(self):
        ret = self.test._create_virtualenv(self.venv_dir)
        self.test.assertEqual(
            ret["retcode"],
            0,
            msg="Expected 'retcode' key did not match. Full return dictionary:\n{}".format(
                pprint.pformat(ret)
            ),
        )

    def __exit__(self, *args):
        pass


@skipIf(
    salt.utils.path.which_bin(KNOWN_BINARY_NAMES) is None, "virtualenv not installed"
)
@pytest.mark.windows_whitelisted
class PipStateTest(ModuleCase, SaltReturnAssertsMixin):
    def _create_virtualenv(self, path, **kwargs):
        """
        The reason why the virtualenv creation is proxied by this function is mostly
        because under windows, we can't seem to properly create a virtualenv off of
        another virtualenv(we can on linux) and also because, we really don't want to
        test virtualenv creation off of another virtualenv, we want a virtualenv created
        from the original python.
        Also, one windows, we must also point to the virtualenv binary outside the existing
        virtualenv because it will fail otherwise
        """
        self.addCleanup(shutil.rmtree, path, ignore_errors=True)
        try:
            if salt.utils.platform.is_windows():
                python = os.path.join(sys.real_prefix, os.path.basename(sys.executable))
            else:
                python_binary_names = [
                    "python{}.{}".format(*sys.version_info),
                    "python{}".format(*sys.version_info),
                    "python",
                ]
                for binary_name in python_binary_names:
                    python = os.path.join(sys.real_prefix, "bin", binary_name)
                    if os.path.exists(python):
                        break
                else:
                    self.fail(
                        "Couldn't find a python binary name under '{}' matching: {}".format(
                            os.path.join(sys.real_prefix, "bin"), python_binary_names
                        )
                    )
            # We're running off a virtualenv, and we don't want to create a virtualenv off of
            # a virtualenv, let's point to the actual python that created the virtualenv
            kwargs["python"] = python
        except AttributeError:
            # We're running off of the system python
            pass
        return self.run_function("virtualenv.create", [path], **kwargs)

    @slowTest
    def test_pip_installed_removed(self):
        """
        Tests installed and removed states
        """
        name = "pudb"
        if name in self.run_function("pip.list"):
            self.skipTest(
                "{0} is already installed, uninstall to run this test".format(name)
            )
        ret = self.run_state("pip.installed", name=name)
        self.assertSaltTrueReturn(ret)
        ret = self.run_state("pip.removed", name=name)
        self.assertSaltTrueReturn(ret)

    @slowTest
    def test_pip_installed_removed_venv(self):
        venv_dir = os.path.join(RUNTIME_VARS.TMP, "pip_installed_removed")
        with VirtualEnv(self, venv_dir):
            name = "pudb"
            ret = self.run_state("pip.installed", name=name, bin_env=venv_dir)
            self.assertSaltTrueReturn(ret)
            ret = self.run_state("pip.removed", name=name, bin_env=venv_dir)
            self.assertSaltTrueReturn(ret)

    @slowTest
    def test_pip_installed_errors(self):
        venv_dir = os.path.join(RUNTIME_VARS.TMP, "pip-installed-errors")
        self.addCleanup(shutil.rmtree, venv_dir, ignore_errors=True)
        # Since we don't have the virtualenv created, pip.installed will
        # throw an error.
        # Example error strings:
        #  * "Error installing 'pep8': /tmp/pip-installed-errors: not found"
        #  * "Error installing 'pep8': /bin/sh: 1: /tmp/pip-installed-errors: not found"
        #  * "Error installing 'pep8': /bin/bash: /tmp/pip-installed-errors: No such file or directory"
        with patched_environ(SHELL="/bin/sh"):
            ret = self.run_function("state.sls", mods="pip-installed-errors")
            self.assertSaltFalseReturn(ret)
            self.assertSaltCommentRegexpMatches(ret, "Error installing 'pep8':")

            # We now create the missing virtualenv
            ret = self.run_function("virtualenv.create", [venv_dir])
            self.assertEqual(ret["retcode"], 0)

            # The state should not have any issues running now
            ret = self.run_function("state.sls", mods="pip-installed-errors")
            self.assertSaltTrueReturn(ret)

    @skipIf(six.PY3, "Issue is specific to carbon module, which is PY2-only")
    @skipIf(salt.utils.platform.is_windows(), "Carbon does not install in Windows")
    @requires_system_grains
    def test_pip_installed_weird_install(self, grains=None):
        # First, check to see if this is running on CentOS 5 or MacOS.
        # If so, skip this test.
        if grains["os"] in ("CentOS",) and grains["osrelease_info"][0] in (5,):
            self.skipTest("This test does not run reliably on CentOS 5")
        if grains["os"] in ("MacOS",):
            self.skipTest("This test does not run reliably on MacOS")

        ographite = "/opt/graphite"
        if os.path.isdir(ographite):
            self.skipTest(
                "You already have '{0}'. This test would overwrite this "
                "directory".format(ographite)
            )
        try:
            os.makedirs(ographite)
        except OSError as err:
            if err.errno == errno.EACCES:
                # Permission denied
                self.skipTest(
                    "You don't have the required permissions to run this test"
                )
        finally:
            if os.path.isdir(ographite):
                shutil.rmtree(ographite, ignore_errors=True)

        venv_dir = os.path.join(RUNTIME_VARS.TMP, "pip-installed-weird-install")
        try:
            # We may be able to remove this, I had to add it because the custom
            # modules from the test suite weren't available in the jinja
            # context when running the call to state.sls that comes after.
            self.run_function("saltutil.sync_modules")
            # Since we don't have the virtualenv created, pip.installed will
            # throw an error.
            ret = self.run_function("state.sls", mods="pip-installed-weird-install")
            self.assertSaltTrueReturn(ret)

            # We cannot use assertInSaltComment here because we need to skip
            # some of the state return parts
            for key in six.iterkeys(ret):
                self.assertTrue(ret[key]["result"])
                if ret[key]["name"] != "carbon < 1.1":
                    continue
                self.assertEqual(
                    ret[key]["comment"],
                    "There was no error installing package 'carbon < 1.1' "
                    "although it does not show when calling 'pip.freeze'.",
                )
                break
            else:
                raise Exception("Expected state did not run")
        finally:
            if os.path.isdir(ographite):
                shutil.rmtree(ographite, ignore_errors=True)

    @slowTest
    def test_issue_2028_pip_installed_state(self):
        ret = self.run_function("state.sls", mods="issue-2028-pip-installed")

        venv_dir = os.path.join(RUNTIME_VARS.TMP, "issue-2028-pip-installed")
        self.addCleanup(shutil.rmtree, venv_dir, ignore_errors=True)

        pep8_bin = os.path.join(venv_dir, "bin", "pep8")
        if salt.utils.platform.is_windows():
            pep8_bin = os.path.join(venv_dir, "Scripts", "pep8.exe")

        self.assertSaltTrueReturn(ret)
        self.assertTrue(os.path.isfile(pep8_bin))

    @slowTest
    def test_issue_2087_missing_pip(self):
        venv_dir = os.path.join(RUNTIME_VARS.TMP, "issue-2087-missing-pip")

        # Let's create the testing virtualenv
        ret = self._create_virtualenv(venv_dir)
        self.assertEqual(
            ret["retcode"],
            0,
            msg="Expected 'retcode' key did not match. Full return dictionary:\n{}".format(
                pprint.pformat(ret)
            ),
        )

        # Let's remove the pip binary
        pip_bin = os.path.join(venv_dir, "bin", "pip")
        site_dir = self.run_function(
            "virtualenv.get_distribution_path", [venv_dir, "pip"]
        )
        if salt.utils.platform.is_windows():
            pip_bin = os.path.join(venv_dir, "Scripts", "pip.exe")
            site_dir = os.path.join(venv_dir, "lib", "site-packages")
        if not os.path.isfile(pip_bin):
            self.skipTest("Failed to find the pip binary to the test virtualenv")
        os.remove(pip_bin)

        # Also remove the pip dir from site-packages
        # This is needed now that we're using python -m pip instead of the
        # pip binary directly. python -m pip will still work even if the
        # pip binary is missing
        shutil.rmtree(os.path.join(site_dir, "pip"))

        # Let's run the state which should fail because pip is missing
        ret = self.run_function("state.sls", mods="issue-2087-missing-pip")
        self.assertSaltFalseReturn(ret)
        self.assertInSaltComment(
            "Error installing 'pep8': Could not find a `pip` binary", ret
        )

    def test_issue_5940_multiple_pip_mirrors(self):
        """
        Test multiple pip mirrors.  This test only works with pip < 7.0.0
        """
        ret = self.run_function("state.sls", mods="issue-5940-multiple-pip-mirrors")

        venv_dir = os.path.join(RUNTIME_VARS.TMP, "5940-multiple-pip-mirrors")
        self.addCleanup(shutil.rmtree, venv_dir, ignore_errors=True)

        try:
            self.assertSaltTrueReturn(ret)
            self.assertTrue(os.path.isfile(os.path.join(venv_dir, "bin", "pep8")))
        except (AssertionError, CommandExecutionError):
            pip_version = self.run_function("pip.version", [venv_dir])
            if salt.utils.versions.compare(ver1=pip_version, oper=">=", ver2="7.0.0"):
                self.skipTest(
                    "the --mirrors arg has been deprecated and removed in pip==7.0.0"
                )

    @destructiveTest
    @skip_if_not_root
    @with_system_user(
        "issue-6912", on_existing="delete", delete=True, password="PassWord1!"
    )
    @with_tempdir()
    @slowTest
    def test_issue_6912_wrong_owner(self, temp_dir, username):
        # Setup virtual environment directory to be used throughout the test
        venv_dir = os.path.join(temp_dir, "6912-wrong-owner")

        # The virtual environment needs to be in a location that is accessible
        # by both the user running the test and the runas user
        if salt.utils.platform.is_windows():
            salt.utils.win_dacl.set_permissions(temp_dir, username, "full_control")
        else:
            uid = self.run_function("file.user_to_uid", [username])
            os.chown(temp_dir, uid, -1)

        # Create the virtual environment
        venv_create = self._create_virtualenv(
            venv_dir, user=username, password="PassWord1!"
        )
        if venv_create["retcode"] > 0:
            self.skipTest(
                "Failed to create testcase virtual environment: {0}"
                "".format(venv_create)
            )

        # pip install passing the package name in `name`
        ret = self.run_state(
            "pip.installed",
            name="pep8",
            user=username,
            bin_env=venv_dir,
            password="PassWord1!",
        )
        self.assertSaltTrueReturn(ret)

        if HAS_PWD:
            uid = pwd.getpwnam(username).pw_uid
        for globmatch in (
            os.path.join(venv_dir, "**", "pep8*"),
            os.path.join(venv_dir, "*", "**", "pep8*"),
            os.path.join(venv_dir, "*", "*", "**", "pep8*"),
        ):
            for path in glob.glob(globmatch):
                if HAS_PWD:
                    self.assertEqual(uid, os.stat(path).st_uid)
                elif salt.utils.platform.is_windows():
                    self.assertEqual(salt.utils.win_dacl.get_owner(path), username)

    @destructiveTest
    @skip_if_not_root
    @skipIf(salt.utils.platform.is_darwin(), "Test is flaky on macosx")
    @with_system_user(
        "issue-6912", on_existing="delete", delete=True, password="PassWord1!"
    )
    @with_tempdir()
    @slowTest
    def test_issue_6912_wrong_owner_requirements_file(self, temp_dir, username):
        # Setup virtual environment directory to be used throughout the test
        venv_dir = os.path.join(temp_dir, "6912-wrong-owner")

        # The virtual environment needs to be in a location that is accessible
        # by both the user running the test and the runas user
        if salt.utils.platform.is_windows():
            salt.utils.win_dacl.set_permissions(temp_dir, username, "full_control")
        else:
            uid = self.run_function("file.user_to_uid", [username])
            os.chown(temp_dir, uid, -1)

        # Create the virtual environment again as it should have been removed
        venv_create = self._create_virtualenv(
            venv_dir, user=username, password="PassWord1!"
        )
        if venv_create["retcode"] > 0:
            self.skipTest(
                "failed to create testcase virtual environment: {0}"
                "".format(venv_create)
            )

        # pip install using a requirements file
        req_filename = os.path.join(
            RUNTIME_VARS.TMP_STATE_TREE, "issue-6912-requirements.txt"
        )
        with salt.utils.files.fopen(req_filename, "wb") as reqf:
            reqf.write(b"pep8\n")

        ret = self.run_state(
            "pip.installed",
            name="",
            user=username,
            bin_env=venv_dir,
            requirements="salt://issue-6912-requirements.txt",
            password="PassWord1!",
        )
        self.assertSaltTrueReturn(ret)

        if HAS_PWD:
            uid = pwd.getpwnam(username).pw_uid
        for globmatch in (
            os.path.join(venv_dir, "**", "pep8*"),
            os.path.join(venv_dir, "*", "**", "pep8*"),
            os.path.join(venv_dir, "*", "*", "**", "pep8*"),
        ):
            for path in glob.glob(globmatch):
                if HAS_PWD:
                    self.assertEqual(uid, os.stat(path).st_uid)
                elif salt.utils.platform.is_windows():
                    self.assertEqual(salt.utils.win_dacl.get_owner(path), username)

    @slowTest
    def test_issue_6833_pip_upgrade_pip(self):
        # Create the testing virtualenv
        venv_dir = os.path.join(RUNTIME_VARS.TMP, "6833-pip-upgrade-pip")
        ret = self._create_virtualenv(venv_dir)

        self.assertEqual(
            ret["retcode"],
            0,
            msg="Expected 'retcode' key did not match. Full return dictionary:\n{}".format(
                pprint.pformat(ret)
            ),
        )
        import salt.modules.virtualenv_mod

        msg = "New python executable"
        if salt.modules.virtualenv_mod.virtualenv_ver(venv_dir) >= (20, 0, 2):
            msg = "created virtual environment"
        self.assertIn(
            msg,
            ret["stdout"],
            msg="Expected STDOUT did not match. Full return dictionary:\n{}".format(
                pprint.pformat(ret)
            ),
        )

        # Let's install a fixed version pip over whatever pip was
        # previously installed
        ret = self.run_function(
            "pip.install", ["pip==8.0"], upgrade=True, bin_env=venv_dir
        )

        if not isinstance(ret, dict):
            self.fail(
                "The 'pip.install' command did not return the excepted dictionary. Output:\n{}".format(
                    ret
                )
            )

        self.assertEqual(ret["retcode"], 0)
        self.assertIn("Successfully installed pip", ret["stdout"])

        # Let's make sure we have pip 8.0 installed
        self.assertEqual(
            self.run_function("pip.list", ["pip"], bin_env=venv_dir), {"pip": "8.0.0"}
        )

        # Now the actual pip upgrade pip test
        ret = self.run_state(
            "pip.installed", name="pip==8.0.1", upgrade=True, bin_env=venv_dir
        )

        if not isinstance(ret, dict):
            self.fail(
                "The 'pip.install' command did not return the excepted dictionary. Output:\n{}".format(
                    ret
                )
            )

        self.assertSaltTrueReturn(ret)
        self.assertSaltStateChangesEqual(ret, {"pip==8.0.1": "Installed"})

    @slowTest
    def test_pip_installed_specific_env(self):
        # Create the testing virtualenv
        venv_dir = os.path.join(RUNTIME_VARS.TMP, "pip-installed-specific-env")

        # Let's write a requirements file
        requirements_file = os.path.join(
            RUNTIME_VARS.TMP_PRODENV_STATE_TREE, "prod-env-requirements.txt"
        )
        with salt.utils.files.fopen(requirements_file, "wb") as reqf:
            reqf.write(b"pep8\n")

        try:
            self._create_virtualenv(venv_dir)

            # The requirements file should not be found the base environment
            ret = self.run_state(
                "pip.installed",
                name="",
                bin_env=venv_dir,
                requirements="salt://prod-env-requirements.txt",
            )
            self.assertSaltFalseReturn(ret)
            self.assertInSaltComment(
                "'salt://prod-env-requirements.txt' not found", ret
            )

            # The requirements file must be found in the prod environment
            ret = self.run_state(
                "pip.installed",
                name="",
                bin_env=venv_dir,
                saltenv="prod",
                requirements="salt://prod-env-requirements.txt",
            )
            self.assertSaltTrueReturn(ret)
            self.assertInSaltComment(
                "Successfully processed requirements file "
                "salt://prod-env-requirements.txt",
                ret,
            )

            # We're using the base environment but we're passing the prod
            # environment as an url arg to salt://
            ret = self.run_state(
                "pip.installed",
                name="",
                bin_env=venv_dir,
                requirements="salt://prod-env-requirements.txt?saltenv=prod",
            )
            self.assertSaltTrueReturn(ret)
            self.assertInSaltComment("Requirements were already installed.", ret)
        finally:
            if os.path.isfile(requirements_file):
                os.unlink(requirements_file)

    @skipIf(
        salt.utils.platform.is_darwin() and six.PY2, "This test hangs on OS X on Py2"
    )
    @slowTest
    def test_22359_pip_installed_unless_does_not_trigger_warnings(self):
        # This test case should be moved to a format_call unit test specific to
        # the state internal keywords
        venv_dir = os.path.join(RUNTIME_VARS.TMP, "pip-installed-unless")
        venv_create = self._create_virtualenv(venv_dir)
        if venv_create["retcode"] > 0:
            self.skipTest(
                "Failed to create testcase virtual environment: {0}".format(venv_create)
            )

        false_cmd = RUNTIME_VARS.SHELL_FALSE_PATH
        if salt.utils.platform.is_windows():
            false_cmd = "exit 1 >nul"
        try:
            ret = self.run_state(
                "pip.installed",
                name="pep8",
                bin_env=venv_dir,
                unless=false_cmd,
                timeout=600,
            )
            self.assertSaltTrueReturn(ret)
            self.assertNotIn("warnings", next(six.itervalues(ret)))
        finally:
            if os.path.isdir(venv_dir):
                shutil.rmtree(venv_dir, ignore_errors=True)

    @skipIf(
        sys.version_info[:2] >= (3, 6),
        "Old version of virtualenv too old for python3.6",
    )
    @skipIf(salt.utils.platform.is_windows(), "Carbon does not install in Windows")
    @slowTest
    def test_46127_pip_env_vars(self):
        """
        Test that checks if env_vars passed to pip.installed are also passed
        to pip.freeze while checking for existing installations
        """
        # This issue is most easily checked while installing carbon
        # Much of the code here comes from the test_weird_install function above
        ographite = "/opt/graphite"
        if os.path.isdir(ographite):
            self.skipTest(
                "You already have '{0}'. This test would overwrite this "
                "directory".format(ographite)
            )
        try:
            os.makedirs(ographite)
        except OSError as err:
            if err.errno == errno.EACCES:
                # Permission denied
                self.skipTest(
                    "You don't have the required permissions to run this test"
                )
        finally:
            if os.path.isdir(ographite):
                shutil.rmtree(ographite, ignore_errors=True)

        venv_dir = os.path.join(RUNTIME_VARS.TMP, "issue-46127-pip-env-vars")
        try:
            # We may be able to remove this, I had to add it because the custom
            # modules from the test suite weren't available in the jinja
            # context when running the call to state.sls that comes after.
            self.run_function("saltutil.sync_modules")
            # Since we don't have the virtualenv created, pip.installed will
            # throw an error.
            ret = self.run_function("state.sls", mods="issue-46127-pip-env-vars")
            self.assertSaltTrueReturn(ret)
            for key in six.iterkeys(ret):
                self.assertTrue(ret[key]["result"])
                if ret[key]["name"] != "carbon < 1.3":
                    continue
                self.assertEqual(
                    ret[key]["comment"], "All packages were successfully installed"
                )
                break
            else:
                raise Exception("Expected state did not run")
            # Run the state again. Now the already installed message should
            # appear
            ret = self.run_function("state.sls", mods="issue-46127-pip-env-vars")
            self.assertSaltTrueReturn(ret)
            # We cannot use assertInSaltComment here because we need to skip
            # some of the state return parts
            for key in six.iterkeys(ret):
                self.assertTrue(ret[key]["result"])
                # As we are re-running the formula, some states will not be run
                # and "name" may or may not be present, so we use .get() pattern
                if ret[key].get("name", "") != "carbon < 1.3":
                    continue
                self.assertEqual(
                    ret[key]["comment"], ("All packages were successfully installed")
                )
                break
            else:
                raise Exception("Expected state did not run")
        finally:
            if os.path.isdir(ographite):
                shutil.rmtree(ographite, ignore_errors=True)
            if os.path.isdir(venv_dir):
                shutil.rmtree(venv_dir)


@pytest.mark.windows_whitelisted
class PipStateInRequisiteTest(ModuleCase, SaltReturnAssertsMixin):
    @with_tempdir()
    @slowTest
    def test_issue_54755(self, tmpdir):
        """
        Verify github issue 54755 is resolved. This only fails when there is no
        pip module in the python environment. Since the test suite normally has
        a pip module this test will pass and is here for posterity. See also

        unit.states.test_pip_state.PipStateUtilsTest.test_pip_purge_method_with_pip

         and

        unit.states.test_pip_state.PipStateUtilsTest.test_pip_purge_method_without_pip

        Which also validate this issue and will pass/fail regardless of whether
        or not pip is installed.
        """
        file_path = os.path.join(tmpdir, "issue-54755")
        ret = self.run_function(
            "state.sls", mods="issue-54755", pillar={"file_path": file_path}
        )
        key = "file_|-issue-54755_|-{}_|-managed".format(file_path)
        assert key in ret
        assert ret[key]["result"] is True
        with salt.utils.files.fopen(file_path, "r") as fp:
            assert fp.read().strip() == "issue-54755"