"""Test the LibreNMS config flow."""

from unittest.mock import AsyncMock, Mock

from aiohttp import ClientError
from aiolibrenms.exceptions import LibrenmsUnauthenticatedError
import pytest

from homeassistant.components.librenms.const import DOMAIN
from homeassistant.config_entries import SOURCE_USER
from homeassistant.const import (
    CONF_API_KEY,
    CONF_HOST,
    CONF_PORT,
    CONF_SSL,
    CONF_URL,
    CONF_VERIFY_SSL,
)
from homeassistant.core import HomeAssistant
from homeassistant.data_entry_flow import FlowResultType

from .const import MOCK_CONFIG_ENTRY_DATA, MOCK_USER_DATA

from tests.common import MockConfigEntry


async def test_step_user(
    hass: HomeAssistant, mock_setup_entry: AsyncMock, mock_librenms: Mock
) -> None:
    """Test a user initiated config flow."""
    result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER}
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        MOCK_USER_DATA,
    )

    assert result["type"] is FlowResultType.CREATE_ENTRY
    assert result["title"] == "librenms"
    assert result["data"] == MOCK_CONFIG_ENTRY_DATA
    assert len(mock_setup_entry.mock_calls) == 1


@pytest.mark.parametrize(
    ("exception", "error"),
    [
        (
            LibrenmsUnauthenticatedError({"message": "Unauthenticated."}),
            "invalid_auth",
        ),
        (ClientError, "cannot_connect"),
        (Exception, "unknown"),
    ],
)
@pytest.mark.usefixtures("mock_setup_entry")
async def test_step_user_error_handling(
    hass: HomeAssistant, mock_librenms: Mock, exception: Exception, error: str
) -> None:
    """Test a user initiated config flow with errors."""
    result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER}
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"

    mock_librenms.system.async_get_system_info.side_effect = exception

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        MOCK_USER_DATA,
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"
    assert result["errors"] == {"base": error}

    mock_librenms.system.async_get_system_info.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        MOCK_USER_DATA,
    )

    assert result["type"] is FlowResultType.CREATE_ENTRY


@pytest.mark.parametrize(
    ("invalid_url"),
    ["hts://invalid", "hts://invalid:123"],
)
@pytest.mark.usefixtures("mock_setup_entry")
async def test_step_user_invalid_url(
    hass: HomeAssistant, mock_librenms: Mock, invalid_url: str
) -> None:
    """Test a user initiated config flow with errors."""
    result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER}
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        {**MOCK_USER_DATA, CONF_URL: invalid_url},
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"
    assert result["errors"] == {CONF_URL: "invalid_url"}

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        MOCK_USER_DATA,
    )

    assert result["type"] is FlowResultType.CREATE_ENTRY


async def test_user_already_configured(
    hass: HomeAssistant, mock_librenms: Mock, mock_config_entry: MockConfigEntry
) -> None:
    """Test starting a flow by user when already configured."""
    mock_config_entry.add_to_hass(hass)

    result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER}
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        MOCK_USER_DATA,
    )
    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "already_configured"


@pytest.mark.usefixtures("mock_setup_entry")
async def test_reauth_flow(
    hass: HomeAssistant, mock_librenms: Mock, mock_config_entry: MockConfigEntry
) -> None:
    """Test reauthentication flow."""
    mock_config_entry.add_to_hass(hass)
    result = await mock_config_entry.start_reauth_flow(hass)
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reauth_confirm"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={
            CONF_API_KEY: "other_fake_api_key",
        },
    )

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reauth_successful"
    assert mock_config_entry.data[CONF_API_KEY] == "other_fake_api_key"


@pytest.mark.parametrize(
    ("exception", "error"),
    [
        (
            LibrenmsUnauthenticatedError({"message": "Unauthenticated."}),
            "invalid_auth",
        ),
        (ClientError, "cannot_connect"),
        (Exception, "unknown"),
    ],
)
async def test_reauth_flow_error_handling(
    hass: HomeAssistant,
    mock_setup_entry: AsyncMock,
    mock_librenms: Mock,
    mock_config_entry: MockConfigEntry,
    exception: Exception,
    error: str,
) -> None:
    """Test reauthentication flow with errors."""
    mock_config_entry.add_to_hass(hass)
    result = await mock_config_entry.start_reauth_flow(hass)
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reauth_confirm"

    mock_librenms.system.async_get_system_info.side_effect = exception

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={
            CONF_API_KEY: "other_fake_api_key",
        },
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reauth_confirm"
    assert result["errors"] == {"base": error}

    mock_librenms.system.async_get_system_info.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={
            CONF_API_KEY: "other_fake_api_key",
        },
    )

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reauth_successful"
    assert mock_config_entry.data[CONF_API_KEY] == "other_fake_api_key"
    assert len(mock_setup_entry.mock_calls) == 1


@pytest.mark.usefixtures("mock_setup_entry")
async def test_reconfigure_flow(
    hass: HomeAssistant, mock_librenms: Mock, mock_config_entry: MockConfigEntry
) -> None:
    """Test reconfigure flow."""
    mock_config_entry.add_to_hass(hass)
    result = await mock_config_entry.start_reconfigure_flow(hass)
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reconfigure"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={CONF_URL: "https://librenms:8443", CONF_VERIFY_SSL: True},
    )

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reconfigure_successful"
    assert mock_config_entry.data[CONF_HOST] == "librenms"
    assert mock_config_entry.data[CONF_PORT] == 8443
    assert mock_config_entry.data[CONF_SSL] is True
    assert mock_config_entry.data[CONF_VERIFY_SSL] is True


@pytest.mark.parametrize(
    ("exception", "error"),
    [
        (
            LibrenmsUnauthenticatedError({"message": "Unauthenticated."}),
            "invalid_auth",
        ),
        (ClientError, "cannot_connect"),
        (Exception, "unknown"),
    ],
)
@pytest.mark.usefixtures("mock_setup_entry")
async def test_step_reconfigure_error_handling(
    hass: HomeAssistant,
    mock_librenms: Mock,
    mock_config_entry: MockConfigEntry,
    exception: Exception,
    error: str,
) -> None:
    """Test a user initiated config flow with errors."""
    mock_config_entry.add_to_hass(hass)
    result = await mock_config_entry.start_reconfigure_flow(hass)
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reconfigure"

    mock_librenms.system.async_get_system_info.side_effect = exception

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={CONF_URL: "https://librenms:8443", CONF_VERIFY_SSL: True},
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reconfigure"
    assert result["errors"] == {"base": error}

    mock_librenms.system.async_get_system_info.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={CONF_URL: "https://librenms:8443", CONF_VERIFY_SSL: True},
    )
    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reconfigure_successful"


@pytest.mark.usefixtures("mock_setup_entry")
async def test_step_reconfigure_invalid_url(
    hass: HomeAssistant, mock_librenms: Mock, mock_config_entry: MockConfigEntry
) -> None:
    """Test a user initiated config flow with errors."""
    mock_config_entry.add_to_hass(hass)
    result = await mock_config_entry.start_reconfigure_flow(hass)
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reconfigure"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={CONF_URL: "hts://invalid"},
    )
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reconfigure"
    assert result["errors"] == {CONF_URL: "invalid_url"}

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={CONF_URL: "https://librenms:8443", CONF_VERIFY_SSL: True},
    )
    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reconfigure_successful"


async def test_reconfigure_already_configured(
    hass: HomeAssistant, mock_librenms: Mock, mock_config_entry: MockConfigEntry
) -> None:
    """Test duplicate-reconfiguration guard."""
    mock_config_entry2 = MockConfigEntry(
        domain=DOMAIN,
        data={
            CONF_HOST: "librenms2",
            CONF_API_KEY: "abcdef0123456789",
            CONF_PORT: 8443,
            CONF_SSL: True,
            CONF_VERIFY_SSL: True,
        },
        title="librenms2",
    )

    mock_config_entry.add_to_hass(hass)
    mock_config_entry2.add_to_hass(hass)

    result = await mock_config_entry2.start_reconfigure_flow(hass)
    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reconfigure"

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input={CONF_URL: "https://librenms:443", CONF_VERIFY_SSL: True},
    )

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "already_configured"