"""to_plain: pyVmomi objects -> JSON-safe Python values.

Every parser in this package works on the output of ``to_plain`` rather than
on pyVmomi objects. That is what lets the harvest tool dump a real host to
JSON and the tests feed that same JSON back in.
"""

from __future__ import annotations

import datetime
import json

from pyVmomi import vim

from napalm_vmware._plain import to_plain


def test_scalars_pass_through():
    assert to_plain("a") == "a"
    assert to_plain(3) == 3
    assert to_plain(True) is True
    assert to_plain(None) is None


def test_enum_becomes_plain_str():
    value = to_plain(vim.VirtualMachine.PowerState.poweredOn)
    assert value == "poweredOn"
    assert type(value) is str


def test_managed_object_becomes_its_moref():
    assert to_plain(vim.HostSystem("host-21", None)) == "host-21"


def test_data_object_becomes_dict_with_type_and_without_unset_fields():
    nic = vim.host.PhysicalNic(
        device="vmnic0",
        linkSpeed=vim.host.PhysicalNic.LinkSpeedDuplex(speedMb=1000, duplex=True),
    )
    plain = to_plain(nic)
    assert plain["_type"] == "PhysicalNic"
    assert plain["device"] == "vmnic0"
    assert plain["linkSpeed"] == {"_type": "PhysicalNicLinkInfo", "speedMb": 1000, "duplex": True}
    assert "driver" not in plain  # optional and unset


def test_dynamic_property_noise_is_dropped():
    assert "dynamicProperty" not in to_plain(vim.host.PhysicalNic(device="vmnic0"))


def test_lists_are_converted_elementwise():
    devices = [vim.vm.device.VirtualVmxnet3(key=4000), vim.vm.device.VirtualDisk(key=2000)]
    assert [d["_type"] for d in to_plain(devices)] == ["VirtualVmxnet3", "VirtualDisk"]


def test_datetime_becomes_epoch_seconds():
    when = datetime.datetime(2026, 1, 1, tzinfo=datetime.timezone.utc)
    assert to_plain(when) == 1767225600.0


def test_bytes_are_dropped_to_none():
    assert to_plain(b"\x00\x01") is None


def test_result_is_json_serialisable():
    nic = vim.host.PhysicalNic(device="vmnic0", pci="0000:0b:00.0")
    json.dumps(to_plain([nic, vim.HostSystem("host-1", None), 1.5]))