"""Services on a Proxmox node: systemd, through napalm-device-types' mixin.

The listing used to read ``list-unit-files``' second column, which since
systemd 245 is followed by a preset column -- so ``enabled`` was false for
every service on every node (#6). An action ended in ``|| true`` and reported
success whatever happened. Both now come from the shared mixin; the driver
only carries the command over its exec path, as root.
"""

from __future__ import annotations

from unittest.mock import patch

import pytest
from napalm_device_types import SystemdServicesMixin
from napalm_device_types.systemd import SYSTEMD_SERVICES_COMMAND, service_action_command

from napalm_proxmox.driver import ProxmoxDriver

REPORT = (
    "SVC_BEGIN\n[files]\npveproxy.service enabled enabled\n[units]\n"
    "MainPID=1234\nId=pveproxy.service\nNames=pveproxy.service\nLoadState=loaded\n"
    "ActiveState=active\nSubState=running\nUnitFileState=enabled\n"
    "[generated]\nSVC_END\n"
)


def test_the_driver_uses_the_shared_mixin():
    assert issubclass(ProxmoxDriver, SystemdServicesMixin)
    assert ProxmoxDriver.get_services is SystemdServicesMixin.get_services
    assert ProxmoxDriver.manage_service is SystemdServicesMixin.manage_service


def test_listing_runs_the_shared_command(driver):
    with patch.object(driver, "_exec_ssh_command", return_value=REPORT) as exec_:
        services = driver.get_services()

    exec_.assert_called_once_with(SYSTEMD_SERVICES_COMMAND)
    assert services == [{"name": "pveproxy", "running": True, "enabled": True, "pid": 1234}]


def test_an_unreadable_listing_raises_instead_of_reporting_no_services(driver):
    with patch.object(driver, "_exec_ssh_command", return_value=""):
        with pytest.raises(ValueError):
            driver.get_services()


def test_an_action_reports_its_real_outcome(driver):
    failed = "Failed to restart nope.service: Unit nope.service not found.\n__SVC_RC=5"
    with patch.object(driver, "_exec_ssh_command", return_value=failed) as exec_:
        result = driver.manage_service("nope", "restart")

    exec_.assert_called_once_with(service_action_command("nope", "restart"))
    assert result["success"] is False
    assert "not found" in result["output"]


def test_a_successful_action(driver):
    with patch.object(driver, "_exec_ssh_command", return_value="__SVC_RC=0"):
        assert driver.manage_service("pveproxy", "restart") == {"success": True, "output": ""}


def test_an_invalid_name_never_reaches_the_node(driver):
    with patch.object(driver, "_exec_ssh_command") as exec_:
        with pytest.raises(ValueError):
            driver.manage_service("pveproxy; reboot", "stop")

    exec_.assert_not_called()