"""Tests for the Mastodon config flow."""

from unittest.mock import AsyncMock, patch

from mastodon.Mastodon import (
    MastodonNetworkError,
    MastodonNotFoundError,
    MastodonUnauthorizedError,
)
import pytest

from homeassistant.components.mastodon.const import CONF_BASE_URL, DOMAIN
from homeassistant.config_entries import SOURCE_USER
from homeassistant.const import CONF_ACCESS_TOKEN, CONF_CLIENT_ID, CONF_CLIENT_SECRET
from homeassistant.core import HomeAssistant
from homeassistant.data_entry_flow import FlowResultType

from tests.common import MockConfigEntry


async def test_full_flow(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
) -> None:
    """Test full 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"],
        {
            CONF_BASE_URL: "https://mastodon.social",
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )
    assert result["type"] is FlowResultType.CREATE_ENTRY
    assert result["title"] == "@trwnh@mastodon.social"
    assert result["data"] == {
        CONF_BASE_URL: "https://mastodon.social",
        CONF_CLIENT_ID: "client_id",
        CONF_CLIENT_SECRET: "client_secret",
        CONF_ACCESS_TOKEN: "access_token",
    }
    assert result["result"].unique_id == "trwnh_mastodon_social"


async def test_full_flow_with_path(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
) -> None:
    """Test full flow, where a path is accidentally specified."""
    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"],
        {
            CONF_BASE_URL: "https://mastodon.social/home",
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )
    assert result["type"] is FlowResultType.CREATE_ENTRY
    assert result["title"] == "@trwnh@mastodon.social"
    assert result["data"] == {
        CONF_BASE_URL: "https://mastodon.social",
        CONF_CLIENT_ID: "client_id",
        CONF_CLIENT_SECRET: "client_secret",
        CONF_ACCESS_TOKEN: "access_token",
    }
    assert result["result"].unique_id == "trwnh_mastodon_social"


async def test_full_flow_fallback_to_instance_v1(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
) -> None:
    """Test full flow where instance_v2 fails and falls back to instance_v1."""
    mock_mastodon_client.instance_v2.side_effect = MastodonNotFoundError(
        "Instance API v2 not found"
    )

    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"],
        {
            CONF_BASE_URL: "https://mastodon.social",
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )
    assert result["type"] is FlowResultType.CREATE_ENTRY
    assert result["title"] == "@trwnh@mastodon.social"
    assert result["data"] == {
        CONF_BASE_URL: "https://mastodon.social",
        CONF_CLIENT_ID: "client_id",
        CONF_CLIENT_SECRET: "client_secret",
        CONF_ACCESS_TOKEN: "access_token",
    }
    assert result["result"].unique_id == "trwnh_mastodon_social"

    mock_mastodon_client.instance_v2.assert_called_once()
    mock_mastodon_client.instance_v1.assert_called_once()


@pytest.mark.parametrize(
    ("exception", "error"),
    [
        (MastodonNetworkError, "network_error"),
        (MastodonUnauthorizedError, "unauthorized_error"),
        (Exception, "unknown"),
    ],
)
async def test_flow_errors(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    exception: Exception,
    error: str,
) -> None:
    """Test flow errors."""
    mock_mastodon_client.account_verify_credentials.side_effect = exception

    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"],
        {
            CONF_BASE_URL: "https://mastodon.social",
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )

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

    mock_mastodon_client.account_verify_credentials.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        {
            CONF_BASE_URL: "https://mastodon.social",
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )
    assert result["type"] is FlowResultType.CREATE_ENTRY


async def test_duplicate(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    mock_config_entry: MockConfigEntry,
) -> None:
    """Test duplicate flow."""
    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"],
        {
            CONF_BASE_URL: "https://mastodon.social",
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )

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


async def test_reauth_flow(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    mock_config_entry: MockConfigEntry,
) -> None:
    """Test reauth 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"],
        {CONF_ACCESS_TOKEN: "token2"},
    )

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reauth_successful"
    assert mock_config_entry.data[CONF_ACCESS_TOKEN] == "token2"


async def test_reauth_flow_wrong_account(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    mock_config_entry: MockConfigEntry,
) -> None:
    """Test reauth flow with wrong account."""
    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"

    with patch(
        "homeassistant.components.mastodon.config_flow.construct_mastodon_username",
        return_value="BAD_USERNAME",
    ):
        result = await hass.config_entries.flow.async_configure(
            result["flow_id"],
            {CONF_ACCESS_TOKEN: "token2"},
        )

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


@pytest.mark.parametrize(
    ("exception", "error"),
    [
        (MastodonNetworkError, "network_error"),
        (MastodonUnauthorizedError, "unauthorized_error"),
        (Exception, "unknown"),
    ],
)
async def test_reauth_flow_exceptions(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    mock_config_entry: MockConfigEntry,
    exception: Exception,
    error: str,
) -> None:
    """Test reauth flow errors."""
    mock_config_entry.add_to_hass(hass)
    mock_mastodon_client.account_verify_credentials.side_effect = exception

    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"],
        {CONF_ACCESS_TOKEN: "token"},
    )

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

    mock_mastodon_client.account_verify_credentials.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        {CONF_ACCESS_TOKEN: "token"},
    )
    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reauth_successful"


async def test_reconfigure_flow(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    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"],
        {
            CONF_CLIENT_ID: "client_id2",
            CONF_CLIENT_SECRET: "client_secret2",
            CONF_ACCESS_TOKEN: "access_token2",
        },
    )

    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reconfigure_successful"
    assert mock_config_entry.data[CONF_BASE_URL] == "https://mastodon.social"
    assert mock_config_entry.data[CONF_CLIENT_ID] == "client_id2"
    assert mock_config_entry.data[CONF_CLIENT_SECRET] == "client_secret2"
    assert mock_config_entry.data[CONF_ACCESS_TOKEN] == "access_token2"


async def test_reconfigure_flow_wrong_account(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    mock_config_entry: MockConfigEntry,
) -> None:
    """Test reconfigure flow with wrong account."""
    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"

    with patch(
        "homeassistant.components.mastodon.config_flow.construct_mastodon_username",
        return_value="WRONG_USERNAME",
    ):
        result = await hass.config_entries.flow.async_configure(
            result["flow_id"],
            {
                CONF_CLIENT_ID: "client_id",
                CONF_CLIENT_SECRET: "client_secret",
                CONF_ACCESS_TOKEN: "access_token2",
            },
        )

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


@pytest.mark.parametrize(
    ("exception", "error"),
    [
        (MastodonNetworkError, "network_error"),
        (MastodonUnauthorizedError, "unauthorized_error"),
        (Exception, "unknown"),
    ],
)
async def test_reconfigure_flow_exceptions(
    hass: HomeAssistant,
    mock_mastodon_client: AsyncMock,
    mock_setup_entry: AsyncMock,
    mock_config_entry: MockConfigEntry,
    exception: Exception,
    error: str,
) -> None:
    """Test reconfigure flow errors."""
    mock_config_entry.add_to_hass(hass)
    mock_mastodon_client.account_verify_credentials.side_effect = exception

    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"],
        {
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )

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

    mock_mastodon_client.account_verify_credentials.side_effect = None

    result = await hass.config_entries.flow.async_configure(
        result["flow_id"],
        {
            CONF_CLIENT_ID: "client_id",
            CONF_CLIENT_SECRET: "client_secret",
            CONF_ACCESS_TOKEN: "access_token",
        },
    )
    assert result["type"] is FlowResultType.ABORT
    assert result["reason"] == "reconfigure_successful"