from __future__ import annotations

import argparse
import os
import unittest
import unittest.mock

from cli.administration.deploy.development import exec as exec_cmd


def _args(
    *,
    distro: str = "debian",
    cmd: list[str] | None = None,
    env: list[str] | None = None,
) -> argparse.Namespace:
    return argparse.Namespace(
        distro=distro,
        cmd=cmd if cmd is not None else [],
        env=env if env is not None else [],
    )


class TestDevelopmentExec(unittest.TestCase):
    def test_handler_forwards_services_disabled(self):
        compose = unittest.mock.Mock()
        compose.exec.return_value.returncode = 0

        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            unittest.mock.patch.dict(os.environ, {"disable": "email"}, clear=False),
        ):
            rc = exec_cmd.handler(_args(cmd=["--", "sh", "-lc", "true"]))

        self.assertEqual(rc, 0)
        compose.exec.assert_called_once_with(
            ["sh", "-lc", "true"],
            check=False,
            extra_env={"disable": "email"},
        )

    def test_handler_omits_extra_env_when_services_disabled_unset(self):
        compose = unittest.mock.Mock()
        compose.exec.return_value.returncode = 0

        env = {**os.environ, "disable": ""}
        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            unittest.mock.patch.dict(os.environ, env, clear=True),
        ):
            rc = exec_cmd.handler(_args(cmd=["echo", "hi"]))

        self.assertEqual(rc, 0)
        compose.exec.assert_called_once_with(
            ["echo", "hi"], check=False, extra_env=None
        )

    def test_handler_requires_command(self):
        with self.assertRaises(SystemExit):
            exec_cmd.handler(_args(cmd=[]))

    def test_env_pairs_are_injected_into_extra_env(self):
        compose = unittest.mock.Mock()
        compose.exec.return_value.returncode = 0

        env = {**os.environ, "disable": ""}
        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            unittest.mock.patch.dict(os.environ, env, clear=True),
        ):
            rc = exec_cmd.handler(
                _args(
                    cmd=["bash", "/opt/helper.sh"],
                    env=[
                        "INFINITO_INVENTORY_FILE=/srv/inv/devices.yml",
                        "apps=web-app-foo",
                    ],
                )
            )

        self.assertEqual(rc, 0)
        compose.exec.assert_called_once_with(
            ["bash", "/opt/helper.sh"],
            check=False,
            extra_env={
                "INFINITO_INVENTORY_FILE": "/srv/inv/devices.yml",
                "apps": "web-app-foo",
            },
        )

    def test_env_pair_with_equals_in_value_is_preserved(self):
        compose = unittest.mock.Mock()
        compose.exec.return_value.returncode = 0

        env = {**os.environ, "disable": ""}
        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            unittest.mock.patch.dict(os.environ, env, clear=True),
        ):
            exec_cmd.handler(_args(cmd=["true"], env=["EXTRA_VARS=a=1 b=2"]))

        compose.exec.assert_called_once_with(
            ["true"],
            check=False,
            extra_env={"EXTRA_VARS": "a=1 b=2"},
        )

    def test_env_pair_overrides_implicit_services_disabled(self):
        compose = unittest.mock.Mock()
        compose.exec.return_value.returncode = 0

        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            unittest.mock.patch.dict(os.environ, {"disable": "from-env"}, clear=False),
        ):
            exec_cmd.handler(_args(cmd=["true"], env=["disable=from-cli"]))

        compose.exec.assert_called_once_with(
            ["true"],
            check=False,
            extra_env={"disable": "from-cli"},
        )

    def test_env_pair_without_equals_is_rejected(self):
        compose = unittest.mock.Mock()
        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            self.assertRaisesRegex(SystemExit, "expects KEY=VALUE"),
        ):
            exec_cmd.handler(_args(cmd=["true"], env=["BARE"]))

    def test_env_pair_with_empty_key_is_rejected(self):
        compose = unittest.mock.Mock()
        with (
            unittest.mock.patch(
                "cli.administration.deploy.development.exec.make_compose",
                return_value=compose,
            ),
            self.assertRaisesRegex(SystemExit, "KEY is empty"),
        ):
            exec_cmd.handler(_args(cmd=["true"], env=["=value"]))


if __name__ == "__main__":
    unittest.main()