"""BmcDriver: the best of Redfish and IPMI for one BMC, chosen by itself.

Redfish where the BMC answers it; IPMI where it does not. A BMC that refuses Redfish
altogether (no license) is read over IPMI entirely; a getter that fails over Redfish is
asked over IPMI, where IPMI has it. Both use the same account.

Against the recordings of the Supermicro X10DRL-i: its Redfish tree with the OOB license,
its unlicensed service root, and its IPMI answers.
"""

import json
from pathlib import Path

import pytest
from napalm_device_types import ManagementControllerDriver
from napalm_device_types.roles import primary_role_of

import napalm_redfish.ipmi as ipmi
from napalm_redfish.bmc import BmcDriver
from tests.conftest import BASE_URL, FIXTURES, MockupServer
from tests.test_ipmi import FakeCommand

X10 = Path(__file__).parent / "fixtures" / "supermicro-x10drl-i-3.91"
MOCKUP = "supermicro-x10drl-i-3.91/redfish"
HOST = BASE_URL.removeprefix("https://")


@pytest.fixture(autouse=True)
def fake_pyghmi(monkeypatch):
    FakeCommand.instances = []
    monkeypatch.setattr(ipmi, "Command", FakeCommand)


@pytest.fixture
def x10(http):
    server = MockupServer(http, MOCKUP)
    for path, status in json.loads((FIXTURES / MOCKUP / "STATUS.json").read_text()).items():
        body = json.loads(
            (FIXTURES / MOCKUP / path[len("/redfish/v1/") :] / "index.json").read_text()
        )
        server.override("GET", path, status, body)
    return server


def _open(**optional):
    d = BmcDriver(HOST, "netork", "s3cret", optional_args={"verify_ssl": False, **optional})
    d.open()
    return d


@pytest.fixture
def unlicensed(x10):
    x10.override(
        "GET", "/redfish/v1/", 403, json.loads((X10 / "service_root_403.json").read_text())
    )
    d = _open()
    yield d
    d.close()


# ── the class ───────────────────────────────────────────────────────────


def test_it_is_one_bmc_driver_with_power_and_bmc_reset():
    assert issubclass(BmcDriver, ManagementControllerDriver)
    assert primary_role_of(BmcDriver) == "management_controller"
    assert BmcDriver.DRIVER_NAME == "bmc"
    assert BmcDriver.default_port == 443
    assert callable(getattr(BmcDriver, "set_power_state", None))
    assert callable(getattr(BmcDriver, "reboot_host", None))


def test_entry_point():
    from importlib.metadata import entry_points

    (ep,) = [e for e in entry_points(group="napalm.drivers") if e.name == "bmc"]
    assert ep.load() is BmcDriver


# ── a BMC that answers Redfish ──────────────────────────────────────────


def test_redfish_is_used_and_ipmi_is_not_even_opened(x10):
    d = _open()
    try:
        assert d.get_facts()["model"] == "X10DRL-i"
        assert len(d.get_hardware_inventory()["cpus"]) == 2
        assert d.get_power_state()["actions"] == [
            "GracefulShutdown",
            "ForceOff",
            "GracefulRestart",
            "ForceRestart",
        ]
    finally:
        d.close()
    assert FakeCommand.instances == []


def test_a_getter_that_fails_over_redfish_is_asked_over_ipmi(x10):
    x10.override("GET", "/redfish/v1/Chassis/1/Thermal", 500, {"error": {"message": "busy"}})
    d = _open()
    try:
        env = d.get_environment()
    finally:
        d.close()
    # From the IPMI sensor records.
    assert len(env["temperature"]) == 19
    assert len(FakeCommand.instances) == 1


def test_the_ipmi_port_is_its_own(x10):
    x10.override("GET", "/redfish/v1/Chassis/1/Thermal", 500, {"error": {"message": "busy"}})
    d = _open(ipmi_port=6230)
    try:
        d.get_environment()
    finally:
        d.close()
    (cmd,) = FakeCommand.instances
    assert cmd.args == {"bmc": HOST, "userid": "netork", "password": "s3cret", "port": 6230}
    assert cmd.logged_out


def test_the_partial_license_warning_passes_through(x10):
    d = _open()
    try:
        assert d.get_device_warnings() == [
            {
                "code": "bmc_license_partial",
                "meta": {"licenses": "DCMS", "parts": ["drives", "firmware inventory"]},
            }
        ]
    finally:
        d.close()


# ── a BMC that refuses Redfish ──────────────────────────────────────────


def test_an_unlicensed_bmc_is_read_over_ipmi(unlicensed):
    facts = unlicensed.get_facts()
    assert facts["vendor"] == "Supermicro"
    assert facts["model"] == "X10DRL-i"
    assert facts["os_version"] == "3.91"
    assert unlicensed.get_power_state() == {
        "state": "On",
        "actions": ["GracefulShutdown", "ForceOff", "ForceRestart"],
    }


def test_an_unlicensed_bmc_switches_power_over_ipmi(unlicensed):
    unlicensed.set_power_state("GracefulShutdown")
    assert FakeCommand.instances[0].power_requests == [("shutdown", False)]


def test_an_unlicensed_bmc_says_ipmi_reads_it_meanwhile(unlicensed):
    (warning,) = unlicensed.get_device_warnings()
    assert warning["code"] == "bmc_license_required"
    assert warning["meta"]["licenses"] == "SUM DCMS OOB"
    assert warning["meta"]["ipmi_fallback"] is True


def test_over_ipmi_the_protocol_netork_talks_is_known_to_be_on(unlicensed):
    assert unlicensed.get_management_protocols() == {"ipmi": {"enabled": True, "port": 623}}


def test_the_bmc_is_not_reset_over_ipmi(unlicensed):
    with pytest.raises(RuntimeError, match="needs Redfish"):
        unlicensed.reboot_host()


def test_the_license_facts_are_redfish_s_even_while_ipmi_reads(unlicensed):
    assert [lic["name"] for lic in unlicensed.get_licenses()] == ["SUM", "DCMS", "OOB"]


def test_ipmi_knows_no_licenses():
    assert not hasattr(ipmi.IpmiDriver, "get_licenses")
    assert callable(getattr(BmcDriver, "get_licenses", None))