"""Test UniFi Network."""
import asyncio
from copy import deepcopy
from datetime import timedelta
from http import HTTPStatus
from unittest.mock import Mock, patch

import aiounifi
from aiounifi.websocket import WebsocketState
import pytest

from homeassistant.components.button import DOMAIN as BUTTON_DOMAIN
from homeassistant.components.device_tracker import DOMAIN as TRACKER_DOMAIN
from homeassistant.components.image import DOMAIN as IMAGE_DOMAIN
from homeassistant.components.sensor import DOMAIN as SENSOR_DOMAIN
from homeassistant.components.switch import DOMAIN as SWITCH_DOMAIN
from homeassistant.components.unifi.const import (
    CONF_SITE_ID,
    CONF_TRACK_CLIENTS,
    CONF_TRACK_DEVICES,
    DEFAULT_ALLOW_BANDWIDTH_SENSORS,
    DEFAULT_ALLOW_UPTIME_SENSORS,
    DEFAULT_DETECTION_TIME,
    DEFAULT_TRACK_CLIENTS,
    DEFAULT_TRACK_DEVICES,
    DEFAULT_TRACK_WIRED_CLIENTS,
    DOMAIN as UNIFI_DOMAIN,
    PLATFORMS,
    UNIFI_WIRELESS_CLIENTS,
)
from homeassistant.components.unifi.controller import RETRY_TIMER, get_unifi_controller
from homeassistant.components.unifi.errors import AuthenticationRequired, CannotConnect
from homeassistant.const import (
    CONF_HOST,
    CONF_PASSWORD,
    CONF_PORT,
    CONF_USERNAME,
    CONF_VERIFY_SSL,
    CONTENT_TYPE_JSON,
)
from homeassistant.core import HomeAssistant
from homeassistant.helpers import device_registry as dr
from homeassistant.helpers.device_registry import CONNECTION_NETWORK_MAC
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from homeassistant.setup import async_setup_component
import homeassistant.util.dt as dt_util

from tests.common import MockConfigEntry, async_fire_time_changed
from tests.test_util.aiohttp import AiohttpClientMocker

DEFAULT_CONFIG_ENTRY_ID = "1"
DEFAULT_HOST = "1.2.3.4"
DEFAULT_SITE = "site_id"

CONTROLLER_HOST = {
    "hostname": "controller_host",
    "ip": DEFAULT_HOST,
    "is_wired": True,
    "last_seen": 1562600145,
    "mac": "10:00:00:00:00:01",
    "name": "Controller host",
    "oui": "Producer",
    "sw_mac": "00:00:00:00:01:01",
    "sw_port": 1,
    "wired-rx_bytes": 1234000000,
    "wired-tx_bytes": 5678000000,
    "uptime": 1562600160,
}

ENTRY_CONFIG = {
    CONF_HOST: DEFAULT_HOST,
    CONF_USERNAME: "username",
    CONF_PASSWORD: "password",
    CONF_PORT: 1234,
    CONF_SITE_ID: DEFAULT_SITE,
    CONF_VERIFY_SSL: False,
}
ENTRY_OPTIONS = {}

CONFIGURATION = []

SITE = [{"desc": "Site name", "name": "site_id", "role": "admin", "_id": "1"}]


def mock_default_unifi_requests(
    aioclient_mock,
    host,
    site_id,
    sites=None,
    clients_response=None,
    clients_all_response=None,
    devices_response=None,
    dpiapp_response=None,
    dpigroup_response=None,
    port_forward_response=None,
    system_information_response=None,
    wlans_response=None,
):
    """Mock default UniFi requests responses."""
    aioclient_mock.get(f"https://{host}:1234", status=302)  # Check UniFi OS

    aioclient_mock.post(
        f"https://{host}:1234/api/login",
        json={"data": "login successful", "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )

    aioclient_mock.get(
        f"https://{host}:1234/api/self/sites",
        json={"data": sites or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )

    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/stat/sta",
        json={"data": clients_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/rest/user",
        json={"data": clients_all_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/stat/device",
        json={"data": devices_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/rest/dpiapp",
        json={"data": dpiapp_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/rest/dpigroup",
        json={"data": dpigroup_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/rest/portforward",
        json={"data": port_forward_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/stat/sysinfo",
        json={"data": system_information_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )
    aioclient_mock.get(
        f"https://{host}:1234/api/s/{site_id}/rest/wlanconf",
        json={"data": wlans_response or [], "meta": {"rc": "ok"}},
        headers={"content-type": CONTENT_TYPE_JSON},
    )


async def setup_unifi_integration(
    hass,
    aioclient_mock=None,
    *,
    config=ENTRY_CONFIG,
    options=ENTRY_OPTIONS,
    sites=SITE,
    clients_response=None,
    clients_all_response=None,
    devices_response=None,
    dpiapp_response=None,
    dpigroup_response=None,
    port_forward_response=None,
    system_information_response=None,
    wlans_response=None,
    known_wireless_clients=None,
    controllers=None,
    unique_id="1",
    config_entry_id=DEFAULT_CONFIG_ENTRY_ID,
):
    """Create the UniFi Network instance."""
    assert await async_setup_component(hass, UNIFI_DOMAIN, {})

    config_entry = MockConfigEntry(
        domain=UNIFI_DOMAIN,
        data=deepcopy(config),
        options=deepcopy(options),
        unique_id=unique_id,
        entry_id=config_entry_id,
        version=1,
    )
    config_entry.add_to_hass(hass)

    if known_wireless_clients:
        hass.data[UNIFI_WIRELESS_CLIENTS].wireless_clients.update(
            known_wireless_clients
        )

    if aioclient_mock:
        mock_default_unifi_requests(
            aioclient_mock,
            host=config_entry.data[CONF_HOST],
            site_id=config_entry.data[CONF_SITE_ID],
            sites=sites,
            clients_response=clients_response,
            clients_all_response=clients_all_response,
            devices_response=devices_response,
            dpiapp_response=dpiapp_response,
            dpigroup_response=dpigroup_response,
            port_forward_response=port_forward_response,
            system_information_response=system_information_response,
            wlans_response=wlans_response,
        )

    await hass.config_entries.async_setup(config_entry.entry_id)
    await hass.async_block_till_done()

    if config_entry.entry_id not in hass.data[UNIFI_DOMAIN]:
        return None

    return config_entry


async def test_controller_setup(
    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
) -> None:
    """Successful setup."""
    with patch(
        "homeassistant.config_entries.ConfigEntries.async_forward_entry_setup",
        return_value=True,
    ) as forward_entry_setup:
        config_entry = await setup_unifi_integration(hass, aioclient_mock)
        controller = hass.data[UNIFI_DOMAIN][config_entry.entry_id]

    entry = controller.config_entry
    assert len(forward_entry_setup.mock_calls) == len(PLATFORMS)
    assert forward_entry_setup.mock_calls[0][1] == (entry, BUTTON_DOMAIN)
    assert forward_entry_setup.mock_calls[1][1] == (entry, TRACKER_DOMAIN)
    assert forward_entry_setup.mock_calls[2][1] == (entry, IMAGE_DOMAIN)
    assert forward_entry_setup.mock_calls[3][1] == (entry, SENSOR_DOMAIN)
    assert forward_entry_setup.mock_calls[4][1] == (entry, SWITCH_DOMAIN)

    assert controller.host == ENTRY_CONFIG[CONF_HOST]
    assert controller.is_admin == (SITE[0]["role"] == "admin")

    assert controller.option_allow_bandwidth_sensors == DEFAULT_ALLOW_BANDWIDTH_SENSORS
    assert controller.option_allow_uptime_sensors == DEFAULT_ALLOW_UPTIME_SENSORS
    assert isinstance(controller.option_block_clients, list)
    assert controller.option_track_clients == DEFAULT_TRACK_CLIENTS
    assert controller.option_track_devices == DEFAULT_TRACK_DEVICES
    assert controller.option_track_wired_clients == DEFAULT_TRACK_WIRED_CLIENTS
    assert controller.option_detection_time == timedelta(seconds=DEFAULT_DETECTION_TIME)
    assert isinstance(controller.option_ssid_filter, set)

    assert controller.mac is None

    assert controller.signal_reachable == "unifi-reachable-1"
    assert controller.signal_options_update == "unifi-options-1"
    assert controller.signal_heartbeat_missed == "unifi-heartbeat-missed"


async def test_controller_mac(
    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
) -> None:
    """Test that it is possible to identify controller mac."""
    config_entry = await setup_unifi_integration(
        hass, aioclient_mock, clients_response=[CONTROLLER_HOST]
    )
    controller = hass.data[UNIFI_DOMAIN][config_entry.entry_id]
    assert controller.mac == CONTROLLER_HOST["mac"]

    device_registry = dr.async_get(hass)
    device_entry = device_registry.async_get_or_create(
        config_entry_id=config_entry.entry_id,
        connections={(CONNECTION_NETWORK_MAC, controller.mac)},
    )
    assert device_entry


async def test_controller_not_accessible(hass: HomeAssistant) -> None:
    """Retry to login gets scheduled when connection fails."""
    with patch(
        "homeassistant.components.unifi.controller.get_unifi_controller",
        side_effect=CannotConnect,
    ):
        await setup_unifi_integration(hass)
    assert hass.data[UNIFI_DOMAIN] == {}


async def test_controller_trigger_reauth_flow(hass: HomeAssistant) -> None:
    """Failed authentication trigger a reauthentication flow."""
    with patch(
        "homeassistant.components.unifi.get_unifi_controller",
        side_effect=AuthenticationRequired,
    ), patch.object(hass.config_entries.flow, "async_init") as mock_flow_init:
        await setup_unifi_integration(hass)
        mock_flow_init.assert_called_once()
    assert hass.data[UNIFI_DOMAIN] == {}


async def test_controller_unknown_error(hass: HomeAssistant) -> None:
    """Unknown errors are handled."""
    with patch(
        "homeassistant.components.unifi.controller.get_unifi_controller",
        side_effect=Exception,
    ):
        await setup_unifi_integration(hass)
    assert hass.data[UNIFI_DOMAIN] == {}


async def test_config_entry_updated(
    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
) -> None:
    """Calling reset when the entry has been setup."""
    config_entry = await setup_unifi_integration(hass, aioclient_mock)
    controller = hass.data[UNIFI_DOMAIN][config_entry.entry_id]

    event_call = Mock()
    unsub = async_dispatcher_connect(hass, controller.signal_options_update, event_call)

    hass.config_entries.async_update_entry(
        config_entry, options={CONF_TRACK_CLIENTS: False, CONF_TRACK_DEVICES: False}
    )
    await hass.async_block_till_done()

    assert config_entry.options[CONF_TRACK_CLIENTS] is False
    assert config_entry.options[CONF_TRACK_DEVICES] is False

    event_call.assert_called_once()

    unsub()


async def test_reset_after_successful_setup(
    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
) -> None:
    """Calling reset when the entry has been setup."""
    config_entry = await setup_unifi_integration(hass, aioclient_mock)
    controller = hass.data[UNIFI_DOMAIN][config_entry.entry_id]

    result = await controller.async_reset()
    await hass.async_block_till_done()

    assert result is True


async def test_reset_fails(
    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker
) -> None:
    """Calling reset when the entry has been setup can return false."""
    config_entry = await setup_unifi_integration(hass, aioclient_mock)
    controller = hass.data[UNIFI_DOMAIN][config_entry.entry_id]

    with patch(
        "homeassistant.config_entries.ConfigEntries.async_forward_entry_unload",
        return_value=False,
    ):
        result = await controller.async_reset()
        await hass.async_block_till_done()

    assert result is False


async def test_connection_state_signalling(
    hass: HomeAssistant,
    aioclient_mock: AiohttpClientMocker,
    mock_unifi_websocket,
    mock_device_registry,
) -> None:
    """Verify connection statesignalling and connection state are working."""
    client = {
        "hostname": "client",
        "ip": "10.0.0.1",
        "is_wired": True,
        "last_seen": dt_util.as_timestamp(dt_util.utcnow()),
        "mac": "00:00:00:00:00:01",
    }
    await setup_unifi_integration(hass, aioclient_mock, clients_response=[client])

    # Controller is connected
    assert hass.states.get("device_tracker.client").state == "home"

    mock_unifi_websocket(state=WebsocketState.DISCONNECTED)
    await hass.async_block_till_done()

    # Controller is disconnected
    assert hass.states.get("device_tracker.client").state == "unavailable"

    mock_unifi_websocket(state=WebsocketState.RUNNING)
    await hass.async_block_till_done()

    # Controller is once again connected
    assert hass.states.get("device_tracker.client").state == "home"


async def test_reconnect_mechanism(
    hass: HomeAssistant, aioclient_mock: AiohttpClientMocker, mock_unifi_websocket
) -> None:
    """Verify reconnect prints only on first reconnection try."""
    await setup_unifi_integration(hass, aioclient_mock)

    aioclient_mock.clear_requests()
    aioclient_mock.post(
        f"https://{DEFAULT_HOST}:1234/api/login", status=HTTPStatus.BAD_GATEWAY
    )

    mock_unifi_websocket(state=WebsocketState.DISCONNECTED)
    await hass.async_block_till_done()

    assert aioclient_mock.call_count == 0

    new_time = dt_util.utcnow() + timedelta(seconds=RETRY_TIMER)
    async_fire_time_changed(hass, new_time)
    await hass.async_block_till_done()

    assert aioclient_mock.call_count == 1

    new_time = dt_util.utcnow() + timedelta(seconds=RETRY_TIMER)
    async_fire_time_changed(hass, new_time)
    await hass.async_block_till_done()

    assert aioclient_mock.call_count == 2


@pytest.mark.parametrize(
    "exception",
    [
        asyncio.TimeoutError,
        aiounifi.BadGateway,
        aiounifi.ServiceUnavailable,
        aiounifi.AiounifiException,
    ],
)
async def test_reconnect_mechanism_exceptions(
    hass: HomeAssistant,
    aioclient_mock: AiohttpClientMocker,
    mock_unifi_websocket,
    exception,
) -> None:
    """Verify async_reconnect calls expected methods."""
    await setup_unifi_integration(hass, aioclient_mock)

    with patch("aiounifi.Controller.login", side_effect=exception), patch(
        "homeassistant.components.unifi.controller.UniFiController.reconnect"
    ) as mock_reconnect:
        mock_unifi_websocket(state=WebsocketState.DISCONNECTED)
        await hass.async_block_till_done()

        new_time = dt_util.utcnow() + timedelta(seconds=RETRY_TIMER)
        async_fire_time_changed(hass, new_time)
        mock_reconnect.assert_called_once()


async def test_get_unifi_controller(hass: HomeAssistant) -> None:
    """Successful call."""
    with patch("aiounifi.Controller.check_unifi_os", return_value=True), patch(
        "aiounifi.Controller.login", return_value=True
    ):
        assert await get_unifi_controller(hass, ENTRY_CONFIG)


async def test_get_unifi_controller_verify_ssl_false(hass: HomeAssistant) -> None:
    """Successful call with verify ssl set to false."""
    controller_data = dict(ENTRY_CONFIG)
    controller_data[CONF_VERIFY_SSL] = False
    with patch("aiounifi.Controller.check_unifi_os", return_value=True), patch(
        "aiounifi.Controller.login", return_value=True
    ):
        assert await get_unifi_controller(hass, controller_data)


@pytest.mark.parametrize(
    ("side_effect", "raised_exception"),
    [
        (asyncio.TimeoutError, CannotConnect),
        (aiounifi.BadGateway, CannotConnect),
        (aiounifi.ServiceUnavailable, CannotConnect),
        (aiounifi.RequestError, CannotConnect),
        (aiounifi.ResponseError, CannotConnect),
        (aiounifi.Unauthorized, AuthenticationRequired),
        (aiounifi.LoginRequired, AuthenticationRequired),
        (aiounifi.AiounifiException, AuthenticationRequired),
    ],
)
async def test_get_unifi_controller_fails_to_connect(
    hass: HomeAssistant, side_effect, raised_exception
) -> None:
    """Check that get_unifi_controller can handle controller being unavailable."""
    with patch("aiounifi.Controller.check_unifi_os", return_value=True), patch(
        "aiounifi.Controller.login", side_effect=side_effect
    ), pytest.raises(raised_exception):
        await get_unifi_controller(hass, ENTRY_CONFIG)
