"""Tests for the AsusWrt config flow."""
from socket import gaierror
from unittest.mock import patch

from pyasuswrt import AsusWrtError
import pytest

from homeassistant import data_entry_flow
from homeassistant.components.asuswrt.const import (
    CONF_DNSMASQ,
    CONF_INTERFACE,
    CONF_REQUIRE_IP,
    CONF_SSH_KEY,
    CONF_TRACK_UNKNOWN,
    DOMAIN,
    MODE_AP,
    MODE_ROUTER,
    PROTOCOL_HTTPS,
    PROTOCOL_SSH,
    PROTOCOL_TELNET,
)
from homeassistant.components.device_tracker import CONF_CONSIDER_HOME
from homeassistant.config_entries import SOURCE_USER
from homeassistant.const import (
    CONF_BASE,
    CONF_HOST,
    CONF_MODE,
    CONF_PASSWORD,
    CONF_PORT,
    CONF_PROTOCOL,
    CONF_USERNAME,
)
from homeassistant.core import HomeAssistant

from .common import ASUSWRT_BASE, HOST, ROUTER_MAC_ADDR

from tests.common import MockConfigEntry

SSH_KEY = "1234"

CONFIG_DATA = {
    CONF_HOST: HOST,
    CONF_USERNAME: "user",
    CONF_PASSWORD: "pwd",
}

CONFIG_DATA_HTTP = {
    **CONFIG_DATA,
    CONF_PROTOCOL: PROTOCOL_HTTPS,
    CONF_PORT: 8443,
}

CONFIG_DATA_SSH = {
    **CONFIG_DATA,
    CONF_PROTOCOL: PROTOCOL_SSH,
    CONF_PORT: 22,
}

CONFIG_DATA_TELNET = {
    **CONFIG_DATA,
    CONF_PROTOCOL: PROTOCOL_TELNET,
    CONF_PORT: 23,
}


@pytest.fixture(name="patch_get_host", autouse=True)
def mock_controller_patch_get_host():
    """Mock call to socket gethostbyname function."""
    with patch(
        f"{ASUSWRT_BASE}.config_flow.socket.gethostbyname", return_value="192.168.1.1"
    ) as get_host_mock:
        yield get_host_mock


@pytest.fixture(name="patch_is_file", autouse=True)
def mock_controller_patch_is_file():
    """Mock call to os path.isfile function."""
    with patch(
        f"{ASUSWRT_BASE}.config_flow.os.path.isfile", return_value=True
    ) as is_file_mock:
        yield is_file_mock


@pytest.mark.parametrize("unique_id", [{}, {"label_mac": ROUTER_MAC_ADDR}])
async def test_user_legacy(
    hass: HomeAssistant, connect_legacy, patch_setup_entry, unique_id
) -> None:
    """Test user config."""
    flow_result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER, "show_advanced_options": True}
    )
    assert flow_result["type"] == data_entry_flow.FlowResultType.FORM
    assert flow_result["step_id"] == "user"

    connect_legacy.return_value.async_get_nvram.return_value = unique_id

    # test with all provided
    legacy_result = await hass.config_entries.flow.async_configure(
        flow_result["flow_id"], user_input=CONFIG_DATA_TELNET
    )
    await hass.async_block_till_done()

    assert legacy_result["type"] == data_entry_flow.FlowResultType.FORM
    assert legacy_result["step_id"] == "legacy"

    # complete configuration
    result = await hass.config_entries.flow.async_configure(
        legacy_result["flow_id"], user_input={CONF_MODE: MODE_AP}
    )
    await hass.async_block_till_done()

    assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
    assert result["title"] == HOST
    assert result["data"] == {**CONFIG_DATA_TELNET, CONF_MODE: MODE_AP}

    assert len(patch_setup_entry.mock_calls) == 1


@pytest.mark.parametrize("unique_id", [None, ROUTER_MAC_ADDR])
async def test_user_http(
    hass: HomeAssistant, connect_http, patch_setup_entry, unique_id
) -> None:
    """Test user config http."""
    flow_result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER, "show_advanced_options": True}
    )
    assert flow_result["type"] == data_entry_flow.FlowResultType.FORM
    assert flow_result["step_id"] == "user"

    connect_http.return_value.mac = unique_id

    # test with all provided
    result = await hass.config_entries.flow.async_configure(
        flow_result["flow_id"], user_input=CONFIG_DATA_HTTP
    )
    await hass.async_block_till_done()

    assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
    assert result["title"] == HOST
    assert result["data"] == CONFIG_DATA_HTTP

    assert len(patch_setup_entry.mock_calls) == 1


@pytest.mark.parametrize("config", [CONFIG_DATA_TELNET, CONFIG_DATA_HTTP])
async def test_error_pwd_required(hass: HomeAssistant, config) -> None:
    """Test we abort for missing password."""
    config_data = {k: v for k, v in config.items() if k != CONF_PASSWORD}
    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER, "show_advanced_options": True},
        data=config_data,
    )

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["errors"] == {CONF_BASE: "pwd_required"}


async def test_error_no_password_ssh(hass: HomeAssistant) -> None:
    """Test we abort for wrong password and ssh file combination."""
    config_data = {k: v for k, v in CONFIG_DATA_SSH.items() if k != CONF_PASSWORD}
    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER, "show_advanced_options": True},
        data=config_data,
    )

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["errors"] == {CONF_BASE: "pwd_or_ssh"}


async def test_error_invalid_ssh(hass: HomeAssistant, patch_is_file) -> None:
    """Test we abort if invalid ssh file is provided."""
    config_data = {k: v for k, v in CONFIG_DATA_SSH.items() if k != CONF_PASSWORD}
    config_data[CONF_SSH_KEY] = SSH_KEY

    patch_is_file.return_value = False
    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER, "show_advanced_options": True},
        data=config_data,
    )

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["errors"] == {CONF_BASE: "ssh_not_file"}


async def test_error_invalid_host(hass: HomeAssistant, patch_get_host) -> None:
    """Test we abort if host name is invalid."""
    patch_get_host.side_effect = gaierror
    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER},
        data=CONFIG_DATA_TELNET,
    )

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["errors"] == {CONF_BASE: "invalid_host"}


async def test_abort_if_not_unique_id_setup(hass: HomeAssistant) -> None:
    """Test we abort if component without uniqueid is already setup."""
    MockConfigEntry(
        domain=DOMAIN,
        data=CONFIG_DATA_TELNET,
    ).add_to_hass(hass)

    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER},
        data=CONFIG_DATA_TELNET,
    )
    assert result["type"] == data_entry_flow.FlowResultType.ABORT
    assert result["reason"] == "no_unique_id"


async def test_update_uniqueid_exist(
    hass: HomeAssistant, connect_http, patch_setup_entry
) -> None:
    """Test we update entry if uniqueid is already configured."""
    existing_entry = MockConfigEntry(
        domain=DOMAIN,
        data={**CONFIG_DATA_HTTP, CONF_HOST: "10.10.10.10"},
        unique_id=ROUTER_MAC_ADDR,
    )
    existing_entry.add_to_hass(hass)

    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER, "show_advanced_options": True},
        data=CONFIG_DATA_HTTP,
    )
    await hass.async_block_till_done()

    assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
    assert result["title"] == HOST
    assert result["data"] == CONFIG_DATA_HTTP
    prev_entry = hass.config_entries.async_get_entry(existing_entry.entry_id)
    assert not prev_entry


async def test_abort_invalid_unique_id(hass: HomeAssistant, connect_legacy) -> None:
    """Test we abort if uniqueid not available."""
    MockConfigEntry(
        domain=DOMAIN,
        data=CONFIG_DATA_TELNET,
        unique_id=ROUTER_MAC_ADDR,
    ).add_to_hass(hass)

    connect_legacy.return_value.async_get_nvram.return_value = {}

    result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER},
        data=CONFIG_DATA_TELNET,
    )
    assert result["type"] == data_entry_flow.FlowResultType.ABORT
    assert result["reason"] == "invalid_unique_id"


@pytest.mark.parametrize(
    ("side_effect", "error"),
    [
        (OSError, "cannot_connect"),
        (TypeError, "unknown"),
        (None, "cannot_connect"),
    ],
)
async def test_on_connect_legacy_failed(
    hass: HomeAssistant, connect_legacy, side_effect, error
) -> None:
    """Test when we have errors connecting the router with legacy library."""
    flow_result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER, "show_advanced_options": True},
    )

    connect_legacy.return_value.is_connected = False
    connect_legacy.return_value.connection.async_connect.side_effect = side_effect

    # go to legacy form
    result = await hass.config_entries.flow.async_configure(
        flow_result["flow_id"], user_input=CONFIG_DATA_TELNET
    )
    await hass.async_block_till_done()

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["errors"] == {CONF_BASE: error}


@pytest.mark.parametrize(
    ("side_effect", "error"),
    [
        (AsusWrtError, "cannot_connect"),
        (TypeError, "unknown"),
        (None, "cannot_connect"),
    ],
)
async def test_on_connect_http_failed(
    hass: HomeAssistant, connect_http, side_effect, error
) -> None:
    """Test when we have errors connecting the router with http library."""
    flow_result = await hass.config_entries.flow.async_init(
        DOMAIN,
        context={"source": SOURCE_USER, "show_advanced_options": True},
    )

    connect_http.return_value.is_connected = False
    connect_http.return_value.async_connect.side_effect = side_effect

    result = await hass.config_entries.flow.async_configure(
        flow_result["flow_id"], user_input=CONFIG_DATA_HTTP
    )
    await hass.async_block_till_done()

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["errors"] == {CONF_BASE: error}


async def test_options_flow_ap(hass: HomeAssistant, patch_setup_entry) -> None:
    """Test config flow options for ap mode."""
    config_entry = MockConfigEntry(
        domain=DOMAIN,
        data={**CONFIG_DATA_TELNET, CONF_MODE: MODE_AP},
        options={CONF_REQUIRE_IP: True},
    )
    config_entry.add_to_hass(hass)

    await hass.config_entries.async_setup(config_entry.entry_id)
    await hass.async_block_till_done()
    result = await hass.config_entries.options.async_init(config_entry.entry_id)

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["step_id"] == "init"
    assert CONF_REQUIRE_IP in result["data_schema"].schema

    result = await hass.config_entries.options.async_configure(
        result["flow_id"],
        user_input={
            CONF_CONSIDER_HOME: 20,
            CONF_TRACK_UNKNOWN: True,
            CONF_INTERFACE: "aaa",
            CONF_DNSMASQ: "bbb",
            CONF_REQUIRE_IP: False,
        },
    )

    assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
    assert config_entry.options == {
        CONF_CONSIDER_HOME: 20,
        CONF_TRACK_UNKNOWN: True,
        CONF_INTERFACE: "aaa",
        CONF_DNSMASQ: "bbb",
        CONF_REQUIRE_IP: False,
    }


async def test_options_flow_router(hass: HomeAssistant, patch_setup_entry) -> None:
    """Test config flow options for router mode."""
    config_entry = MockConfigEntry(
        domain=DOMAIN,
        data={**CONFIG_DATA_TELNET, CONF_MODE: MODE_ROUTER},
    )
    config_entry.add_to_hass(hass)

    await hass.config_entries.async_setup(config_entry.entry_id)
    await hass.async_block_till_done()
    result = await hass.config_entries.options.async_init(config_entry.entry_id)

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["step_id"] == "init"
    assert CONF_REQUIRE_IP not in result["data_schema"].schema

    result = await hass.config_entries.options.async_configure(
        result["flow_id"],
        user_input={
            CONF_CONSIDER_HOME: 20,
            CONF_TRACK_UNKNOWN: True,
            CONF_INTERFACE: "aaa",
            CONF_DNSMASQ: "bbb",
        },
    )

    assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
    assert config_entry.options == {
        CONF_CONSIDER_HOME: 20,
        CONF_TRACK_UNKNOWN: True,
        CONF_INTERFACE: "aaa",
        CONF_DNSMASQ: "bbb",
    }


async def test_options_flow_http(hass: HomeAssistant, patch_setup_entry) -> None:
    """Test config flow options for http mode."""
    config_entry = MockConfigEntry(
        domain=DOMAIN,
        data={**CONFIG_DATA_HTTP, CONF_MODE: MODE_ROUTER},
    )
    config_entry.add_to_hass(hass)

    await hass.config_entries.async_setup(config_entry.entry_id)
    await hass.async_block_till_done()
    result = await hass.config_entries.options.async_init(config_entry.entry_id)

    assert result["type"] == data_entry_flow.FlowResultType.FORM
    assert result["step_id"] == "init"
    assert CONF_INTERFACE not in result["data_schema"].schema
    assert CONF_DNSMASQ not in result["data_schema"].schema
    assert CONF_REQUIRE_IP not in result["data_schema"].schema

    result = await hass.config_entries.options.async_configure(
        result["flow_id"],
        user_input={
            CONF_CONSIDER_HOME: 20,
            CONF_TRACK_UNKNOWN: True,
        },
    )

    assert result["type"] == data_entry_flow.FlowResultType.CREATE_ENTRY
    assert config_entry.options == {
        CONF_CONSIDER_HOME: 20,
        CONF_TRACK_UNKNOWN: True,
    }