"""Unit tests for OfficeConnectDriver — fixture-driven, no real device."""

import pathlib
from unittest.mock import patch

import pytest

from napalm_hpe_officeconnect.officeconnect import OfficeConnectDriver

FIXTURES = pathlib.Path(__file__).parent.parent / "fixtures"

PAGE_FOR_PATH = {
    OfficeConnectDriver.DASHBOARD: "base_dashboard",
    OfficeConnectDriver.PORT_SUMMARY: "base_port_summary",
    OfficeConnectDriver.MAC_TABLE: "base_mac_address_table",
    OfficeConnectDriver.VLAN_STATUS: "switching_vlan_status",
}


def fake_fetch(path: str) -> str:
    """Serve a captured page for the requested path."""
    if path.startswith("/htdocs/pages/switching/vlan_per_port.lsp"):
        vlan = path.rsplit("=", 1)[-1]
        name = f"switching_vlan_per_port_{vlan if vlan == '10' else '1'}"
    else:
        name = PAGE_FOR_PATH[path]
    return (FIXTURES / f"{name}.html").read_text(encoding="utf-8")


@pytest.fixture
def driver():
    with patch("napalm_hpe_officeconnect.officeconnect.OfficeConnectClient") as client_cls:
        client = client_cls.return_value
        client.fetch.side_effect = fake_fetch
        client.is_authenticated = True
        d = OfficeConnectDriver("192.0.2.20", "admin", "secret")
        d._client = client
        yield d


# ===========================================================================
# Fingerprinting contract — consumed by netOrk discovery without a connection
# ===========================================================================


def test_driver_identity():
    assert OfficeConnectDriver.DRIVER_NAME == "hpe_officeconnect"
    assert OfficeConnectDriver.VENDOR == "HPE"


def test_snmp_object_id_is_specific_enough_to_not_collide_with_procurve():
    """The ProCurve driver claims 1.3.6.1.4.1.11 — the bare HPE arc. This
    driver must claim the longer OfficeConnect arc or the two compete."""
    assert OfficeConnectDriver.SNMP_OBJECT_ID_PREFIX == "1.3.6.1.4.1.11.2.3.7.11"
    assert "1.3.6.1.4.1.11.2.3.7.11.170".startswith(OfficeConnectDriver.SNMP_OBJECT_ID_PREFIX)


def test_http_fingerprint_requires_officeconnect():
    mandatory = [r for r in OfficeConnectDriver.HTTP_FINGERPRINT if r.mandatory]
    assert [r.pattern for r in mandatory] == ["officeconnect"]


def test_snmp_fingerprint_matches_real_sysdescr():
    """sysDescr as returned by a J9982A over SNMPv2c."""
    sys_descr = (
        "hpe officeconnect switch 1820 8g poe+ (65w) j9982a, pt.02.19, "
        "linux 3.6.5-58b5074c, u-boot 2012.10-00116-g3ab515c (jul 30 2014 - 10:52:01)"
    )
    matched = [r.pattern for r in OfficeConnectDriver.SNMP_FINGERPRINT if r.pattern in sys_descr]
    assert "officeconnect" in matched
    assert "1820" in matched


def test_snmp_fingerprint_has_no_mandatory_rule():
    """HTTP already carries the hard requirement. A mandatory SNMP rule would
    disqualify the driver for any device answering SNMP but not HTTP."""
    assert not any(r.mandatory for r in OfficeConnectDriver.SNMP_FINGERPRINT)


# ===========================================================================
# Connection lifecycle
# ===========================================================================


def test_open_logs_in(driver):
    driver.open()
    driver._client.login.assert_called_once()


def test_close_logs_out(driver):
    driver.close()
    driver._client.logout.assert_called_once()


def test_is_alive_reflects_session_state(driver):
    assert driver.is_alive() == {"is_alive": True}


# ===========================================================================
# get_facts
# ===========================================================================


def test_get_facts(driver):
    facts = driver.get_facts()
    assert facts["vendor"] == "HPE"
    assert facts["hostname"] == "testswitch"
    assert facts["serial_number"] == "CN0FIXTURE0"
    assert facts["os_version"] == "PT.02.19"
    assert facts["model"] == "HPE OfficeConnect Switch 1820 8G PoE+ (65W) J9982A"
    assert facts["uptime"] == 67480
    assert facts["interface_list"][:3] == ["1", "2", "3"]
    assert "TRK1" in facts["interface_list"]


# ===========================================================================
# get_interfaces
# ===========================================================================


def test_get_interfaces_returns_ports_and_trunks(driver):
    interfaces = driver.get_interfaces()
    assert len(interfaces) == 12
    assert set(interfaces) >= {"1", "8", "TRK1", "TRK4"}


def test_get_interfaces_link_state(driver):
    interfaces = driver.get_interfaces()
    assert interfaces["3"]["is_up"] is True
    assert interfaces["1"]["is_up"] is False
    # Admin state is independent of link state on this platform.
    assert interfaces["1"]["is_enabled"] is True


def test_get_interfaces_speed_is_mbit(driver):
    interfaces = driver.get_interfaces()
    assert interfaces["3"]["speed"] == 1000.0
    assert interfaces["6"]["speed"] == 100.0  # "100 Mbps Full Duplex"
    assert interfaces["1"]["speed"] == 0.0  # link down — no speed reported


def test_get_interfaces_mtu(driver):
    assert driver.get_interfaces()["1"]["mtu"] == 1518


# ===========================================================================
# get_vlans
# ===========================================================================


def test_get_vlans_lists_every_vlan(driver):
    vlans = driver.get_vlans()
    assert set(vlans) == {"1", "10", "20", "30", "40", "50", "60"}
    assert vlans["1"]["name"] == "default"
    assert vlans["10"]["name"] == "VLAN0010"


def test_get_vlans_membership_excludes_non_members(driver):
    """Participation is Untagged / Tagged / Excluded — only the first two
    make an interface a member."""
    vlans = driver.get_vlans()
    assert vlans["10"]["interfaces"] == ["2", "3", "4", "8"]


def test_get_vlans_detail_splits_tagged_and_untagged(driver):
    detail = driver.get_vlans_detail()
    assert detail["1"]["untagged"] == ["1", "5", "7", "TRK1", "TRK2", "TRK3", "TRK4"]
    assert detail["1"]["tagged"] == ["8"]


# ===========================================================================
# get_mac_address_table
# ===========================================================================


def test_get_mac_address_table(driver):
    table = driver.get_mac_address_table()
    assert len(table) == 17
    first = table[0]
    assert first["mac"] == "00:11:22:33:44:01"
    assert first["interface"] == "7"
    assert first["vlan"] == 1
    assert first["static"] is False
    assert first["active"] is True


# ===========================================================================
# Deliberate gaps — documented, not silently faked
# ===========================================================================


def test_get_interfaces_counters_is_not_implemented(driver):
    """port_summary_stats.lsp ships an empty dataset on PT.02.19; returning
    zeros would look like real counters. See README."""
    with pytest.raises(NotImplementedError):
        driver.get_interfaces_counters()