"""Tests for the Fluss+ config flow."""

from unittest.mock import AsyncMock

from fluss_api import (
    FlussApiClientAuthenticationError,
    FlussApiClientCommunicationError,
)
import pytest

from homeassistant.components.fluss.const import DOMAIN
from homeassistant.config_entries import SOURCE_USER
from homeassistant.const import CONF_API_KEY
from homeassistant.core import HomeAssistant
from homeassistant.data_entry_flow import FlowResultType

from tests.common import MockConfigEntry

NEW_API_KEY = "new_api_key"


@pytest.mark.usefixtures("mock_setup_entry")
async def test_full_flow(hass: HomeAssistant, mock_api_client: AsyncMock) -> None:
    """Test full 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"
    assert result["errors"] == {}

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

    assert result["type"] is FlowResultType.CREATE_ENTRY
    assert result["title"] == "My Fluss+ Devices"
    assert result["data"] == {CONF_API_KEY: "valid_api_key"}


@pytest.mark.parametrize(
    ("exception", "expected_error"),
    [
        (FlussApiClientAuthenticationError, "invalid_auth"),
        (FlussApiClientCommunicationError, "cannot_connect"),
        (Exception, "unknown"),
    ],
)
@pytest.mark.usefixtures("mock_setup_entry")
async def test_step_user_errors(
    hass: HomeAssistant,
    mock_api_client: AsyncMock,
    exception: Exception,
    expected_error: str,
) -> None:
    """Test error cases for user step with recovery."""
    result = await hass.config_entries.flow.async_init(
        DOMAIN, context={"source": SOURCE_USER}
    )

    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"
    assert result["errors"] == {}

    user_input = {CONF_API_KEY: "some_api_key"}

    mock_api_client.async_get_devices.side_effect = exception

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

    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "user"
    assert result["errors"] == {"base": expected_error}

    mock_api_client.async_get_devices.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        user_input,
    )
    assert result["type"] is FlowResultType.CREATE_ENTRY


@pytest.mark.usefixtures("mock_setup_entry")
async def test_duplicate_entry(
    hass: HomeAssistant, mock_api_client: AsyncMock, mock_config_entry: MockConfigEntry
) -> None:
    """Test error cases for user step with recovery."""
    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"
    assert result["errors"] == {}

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

    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_api_client: AsyncMock,
    mock_config_entry: MockConfigEntry,
) -> None:
    """Test reauthentication updates the API key on the existing entry."""
    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"
    assert result["errors"] == {}

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

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


@pytest.mark.usefixtures("mock_setup_entry")
async def test_reauth_flow_duplicate(
    hass: HomeAssistant,
    mock_api_client: AsyncMock,
    mock_config_entry: MockConfigEntry,
) -> None:
    """Test reauth aborts when the new key is already used by another entry."""
    mock_config_entry.add_to_hass(hass)
    other_entry = MockConfigEntry(
        domain=DOMAIN,
        title="My Fluss+ Devices",
        data={CONF_API_KEY: NEW_API_KEY},
    )
    other_entry.add_to_hass(hass)

    result = await mock_config_entry.start_reauth_flow(hass)

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

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "already_configured"
    assert mock_config_entry.data[CONF_API_KEY] == "test_api_key"


@pytest.mark.parametrize(
    ("exception", "expected_error"),
    [
        (FlussApiClientAuthenticationError, "invalid_auth"),
        (FlussApiClientCommunicationError, "cannot_connect"),
        (Exception, "unknown"),
    ],
)
@pytest.mark.usefixtures("mock_setup_entry")
async def test_reauth_flow_errors(
    hass: HomeAssistant,
    mock_api_client: AsyncMock,
    mock_config_entry: MockConfigEntry,
    exception: Exception,
    expected_error: str,
) -> None:
    """Test reauthentication error cases with recovery."""
    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_api_client.async_get_devices.side_effect = exception

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

    assert result["type"] is FlowResultType.FORM
    assert result["step_id"] == "reauth_confirm"
    assert result["errors"] == {"base": expected_error}

    mock_api_client.async_get_devices.side_effect = None

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

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