# Copyright (C) 2012 Anaconda, Inc
# SPDX-License-Identifier: BSD-3-Clause
from os.path import exists, join
from uuid import uuid4

import pytest

from conda.base.context import conda_tests_ctxt_mgmt_def_pol, context
from conda.common.io import dashlist, env_var, env_vars
from conda.common.serialize import yaml_round_trip_load
from conda.core.prefix_data import PrefixData
from conda.models.enums import PackageType
from conda.models.match_spec import MatchSpec
from conda.testing.integration import PYTHON_BINARY
from conda.testing.integration import Commands as CondaCommands
from conda.testing.integration import run_command as run_conda_command
from tests.test_utils import is_prefix_activated_PATHwise

from . import support_file
from .utils import Commands, make_temp_envs_dir, run_command


def package_is_installed(prefix, spec, pip=None):
    spec = MatchSpec(spec)
    prefix_recs = tuple(PrefixData(prefix, pip_interop_enabled=pip).query(spec))
    if len(prefix_recs) > 1:
        raise AssertionError(
            "Multiple packages installed.%s"
            % (dashlist(prec.dist_str() for prec in prefix_recs))
        )
    is_installed = bool(len(prefix_recs))
    if is_installed and pip is True:
        assert prefix_recs[0].package_type in (
            PackageType.VIRTUAL_PYTHON_WHEEL,
            PackageType.VIRTUAL_PYTHON_EGG_MANAGEABLE,
            PackageType.VIRTUAL_PYTHON_EGG_UNMANAGEABLE,
            PackageType.VIRTUAL_PYTHON_EGG_LINK,
        )
    if is_installed and pip is False:
        assert prefix_recs[0].package_type in (
            None,
            PackageType.NOARCH_GENERIC,
            PackageType.NOARCH_PYTHON,
        )
    return is_installed


def get_env_vars(prefix):
    pd = PrefixData(prefix)

    env_vars = pd.get_environment_env_vars()

    return env_vars


@pytest.mark.integration
def test_create_update():
    with make_temp_envs_dir() as envs_dir:
        with env_var(
            "CONDA_ENVS_DIRS",
            envs_dir,
            stack_callback=conda_tests_ctxt_mgmt_def_pol,
        ):
            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            python_path = join(prefix, PYTHON_BINARY)

            run_command(
                Commands.CREATE,
                env_name,
                support_file("example/environment_pinned.yml"),
            )
            assert exists(python_path)
            assert package_is_installed(prefix, "flask=2.0.2")

            env_vars = get_env_vars(prefix)
            assert env_vars["FIXED"] == "fixed"
            assert env_vars["CHANGES"] == "original_value"
            assert env_vars["GETS_DELETED"] == "not_actually_removed_though"
            assert env_vars.get("NEW_VAR") is None

            run_command(
                Commands.UPDATE,
                env_name,
                support_file("example/environment_pinned_updated.yml"),
            )
            assert package_is_installed(prefix, "flask=2.0.3")
            assert not package_is_installed(prefix, "flask=2.0.2")

            env_vars = get_env_vars(prefix)
            assert env_vars["FIXED"] == "fixed"
            assert env_vars["CHANGES"] == "updated_value"
            assert env_vars["NEW_VAR"] == "new_var"

            # This ends up sticking around since there is no real way of knowing that an environment
            # variable _used_ to be in the variables dict, but isn't any more.
            assert env_vars["GETS_DELETED"] == "not_actually_removed_though"


@pytest.mark.skip(reason="Need to find an appropriate server to test this on.")
@pytest.mark.integration
def test_create_host_port():
    with make_temp_envs_dir() as envs_dir:
        with env_var(
            "CONDA_ENVS_DIRS",
            envs_dir,
            stack_callback=conda_tests_ctxt_mgmt_def_pol,
        ):
            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            python_path = join(prefix, PYTHON_BINARY)

            run_command(
                Commands.CREATE,
                env_name,
                support_file("example/environment_host_port.yml"),
            )
            assert exists(python_path)
            assert package_is_installed(prefix, "flask=2.0.3")


# This test will not run from an unactivated conda in an IDE. You *will* get complaints about being unable
# to load the SSL module. Never try to test conda from outside an activated env. Maybe this should be a
# session fixture with autouse=True so we just refuse to run the testsuite in that case?!
@pytest.mark.skipif(
    not is_prefix_activated_PATHwise(),
    reason="You are running `pytest` outside of proper activation. "
    "The entries necessary for conda to operate correctly "
    "are not on PATH.  Please use `conda activate`",
)
@pytest.mark.integration
def test_create_advanced_pip():
    with make_temp_envs_dir() as envs_dir:
        with env_vars(
            {
                "CONDA_ENVS_DIRS": envs_dir,
            },
            stack_callback=conda_tests_ctxt_mgmt_def_pol,
        ):
            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            python_path = join(prefix, PYTHON_BINARY)

            run_command(
                Commands.CREATE,
                env_name,
                support_file(join("advanced-pip", "environment.yml")),
            )
            assert exists(python_path)
            PrefixData._cache_.clear()
            assert package_is_installed(prefix, "argh", pip=True)
            assert package_is_installed(
                prefix, "module-to-install-in-editable-mode", pip=True
            )
            try:
                assert package_is_installed(prefix, "six", pip=True)
            except AssertionError:
                # six may now be conda-installed because of packaging changes
                assert package_is_installed(prefix, "six", pip=False)
            assert package_is_installed(prefix, "xmltodict=0.10.2", pip=True)


@pytest.mark.integration
def test_create_empty_env():
    with make_temp_envs_dir() as envs_dir:
        with env_var(
            "CONDA_ENVS_DIRS",
            envs_dir,
            stack_callback=conda_tests_ctxt_mgmt_def_pol,
        ):
            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            run_command(Commands.CREATE, env_name, support_file("empty_env.yml"))
            assert exists(prefix)


@pytest.mark.skipif(
    context.subdir
    not in {"linux-64", "linux-ppc64le", "osx-64", "win-32", "win-64", "linux-32"},
    reason="Newer platforms lack Python 2",
)
@pytest.mark.integration
def test_create_env_default_packages():
    with make_temp_envs_dir() as envs_dir:
        with env_var(
            "CONDA_ENVS_DIRS",
            envs_dir,
            stack_callback=conda_tests_ctxt_mgmt_def_pol,
        ):
            # set packages
            run_conda_command(
                CondaCommands.CONFIG,
                envs_dir,
                "--add",
                "create_default_packages",
                "pip",
            )
            run_conda_command(
                CondaCommands.CONFIG,
                envs_dir,
                "--add",
                "create_default_packages",
                "flask",
            )
            stdout, stderr, _ = run_conda_command(
                CondaCommands.CONFIG, envs_dir, "--show"
            )
            yml_obj = yaml_round_trip_load(stdout)
            assert yml_obj["create_default_packages"] == ["flask", "pip"]

            assert not package_is_installed(envs_dir, "python=2")
            assert not package_is_installed(envs_dir, "pytz")
            assert not package_is_installed(envs_dir, "flask")

            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            run_command(
                Commands.CREATE, env_name, support_file("env_with_dependencies.yml")
            )
            assert exists(prefix)
            assert package_is_installed(prefix, "python=2")
            assert package_is_installed(prefix, "pytz")
            assert package_is_installed(prefix, "flask")


@pytest.mark.skipif(
    context.subdir
    not in {"linux-64", "linux-ppc64le", "osx-64", "win-32", "win-64", "linux-32"},
    reason="Newer platforms lack Python 2",
)
@pytest.mark.integration
def test_create_env_no_default_packages():
    with make_temp_envs_dir() as envs_dir:
        with env_var(
            "CONDA_ENVS_DIRS",
            envs_dir,
            stack_callback=conda_tests_ctxt_mgmt_def_pol,
        ):
            # set packages
            run_conda_command(
                CondaCommands.CONFIG,
                envs_dir,
                "--add",
                "create_default_packages",
                "pip",
            )
            run_conda_command(
                CondaCommands.CONFIG,
                envs_dir,
                "--add",
                "create_default_packages",
                "flask",
            )
            stdout, stderr, _ = run_conda_command(
                CondaCommands.CONFIG, envs_dir, "--show"
            )
            yml_obj = yaml_round_trip_load(stdout)
            assert yml_obj["create_default_packages"] == ["flask", "pip"]

            assert not package_is_installed(envs_dir, "python=2")
            assert not package_is_installed(envs_dir, "pytz")
            assert not package_is_installed(envs_dir, "flask")

            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            run_command(
                Commands.CREATE,
                env_name,
                support_file("env_with_dependencies.yml"),
                "--no-default-packages",
            )
            assert exists(prefix)
            assert package_is_installed(prefix, "python=2")
            assert package_is_installed(prefix, "pytz")
            assert not package_is_installed(prefix, "flask")


# removed from class to be able to accept pytest fixture
def test_create_update_remote_env_file(support_file_server_port):
    with make_temp_envs_dir() as envs_dir:
        with env_var(
            "CONDA_ENVS_DIRS", envs_dir, stack_callback=conda_tests_ctxt_mgmt_def_pol
        ):
            env_name = str(uuid4())[:8]
            prefix = join(envs_dir, env_name)
            python_path = join(prefix, PYTHON_BINARY)

            run_command(
                Commands.CREATE,
                env_name,
                support_file(
                    "example/environment_pinned.yml",
                    remote=True,
                    port=support_file_server_port,
                ),
            )
            assert exists(python_path)
            assert package_is_installed(prefix, "flask=2.0.2")

            env_vars = get_env_vars(prefix)
            assert env_vars["FIXED"] == "fixed"
            assert env_vars["CHANGES"] == "original_value"
            assert env_vars["GETS_DELETED"] == "not_actually_removed_though"
            assert env_vars.get("NEW_VAR") is None

            run_command(
                Commands.UPDATE,
                env_name,
                support_file(
                    "example/environment_pinned_updated.yml",
                    remote=True,
                    port=support_file_server_port,
                ),
            )
            assert package_is_installed(prefix, "flask=2.0.3")
            assert not package_is_installed(prefix, "flask=2.0.2")

            env_vars = get_env_vars(prefix)
            assert env_vars["FIXED"] == "fixed"
            assert env_vars["CHANGES"] == "updated_value"
            assert env_vars["NEW_VAR"] == "new_var"

            # This ends up sticking around since there is no real way of knowing that an environment
            # variable _used_ to be in the variables dict, but isn't any more.
            assert env_vars["GETS_DELETED"] == "not_actually_removed_though"