"""Tests for the Somfy config flow."""
import asyncio
import logging
from unittest.mock import patch
import time

import pytest

from homeassistant import data_entry_flow, setup, config_entries
from homeassistant.helpers import config_entry_oauth2_flow

from tests.common import mock_platform, MockConfigEntry

TEST_DOMAIN = "oauth2_test"
CLIENT_SECRET = "5678"
CLIENT_ID = "1234"
REFRESH_TOKEN = "mock-refresh-token"
ACCESS_TOKEN_1 = "mock-access-token-1"
ACCESS_TOKEN_2 = "mock-access-token-2"
AUTHORIZE_URL = "https://example.como/auth/authorize"
TOKEN_URL = "https://example.como/auth/token"


@pytest.fixture
async def local_impl(hass):
    """Local implementation."""
    assert await setup.async_setup_component(hass, "http", {})
    return config_entry_oauth2_flow.LocalOAuth2Implementation(
        hass, TEST_DOMAIN, CLIENT_ID, CLIENT_SECRET, AUTHORIZE_URL, TOKEN_URL
    )


@pytest.fixture
def flow_handler(hass):
    """Return a registered config flow."""

    mock_platform(hass, f"{TEST_DOMAIN}.config_flow")

    class TestFlowHandler(config_entry_oauth2_flow.AbstractOAuth2FlowHandler):
        """Test flow handler."""

        DOMAIN = TEST_DOMAIN

        @property
        def logger(self) -> logging.Logger:
            """Return logger."""
            return logging.getLogger(__name__)

        @property
        def extra_authorize_data(self) -> dict:
            """Extra data that needs to be appended to the authorize url."""
            return {"scope": "read write"}

    with patch.dict(config_entries.HANDLERS, {TEST_DOMAIN: TestFlowHandler}):
        yield TestFlowHandler


class MockOAuth2Implementation(config_entry_oauth2_flow.AbstractOAuth2Implementation):
    """Mock implementation for testing."""

    @property
    def name(self) -> str:
        """Name of the implementation."""
        return "Mock"

    @property
    def domain(self) -> str:
        """Domain that is providing the implementation."""
        return "test"

    async def async_generate_authorize_url(self, flow_id: str) -> str:
        """Generate a url for the user to authorize."""
        return "http://example.com/auth"

    async def async_resolve_external_data(self, external_data) -> dict:
        """Resolve external data to tokens."""
        return external_data

    async def _async_refresh_token(self, token: dict) -> dict:
        """Refresh a token."""
        raise NotImplementedError()


def test_inherit_enforces_domain_set():
    """Test we enforce setting DOMAIN."""

    class TestFlowHandler(config_entry_oauth2_flow.AbstractOAuth2FlowHandler):
        """Test flow handler."""

        @property
        def logger(self) -> logging.Logger:
            """Return logger."""
            return logging.getLogger(__name__)

    with patch.dict(config_entries.HANDLERS, {TEST_DOMAIN: TestFlowHandler}):
        with pytest.raises(TypeError):
            TestFlowHandler()


async def test_abort_if_no_implementation(hass, flow_handler):
    """Check flow abort when no implementations."""
    flow = flow_handler()
    flow.hass = hass
    result = await flow.async_step_user()
    assert result["type"] == data_entry_flow.RESULT_TYPE_ABORT
    assert result["reason"] == "missing_configuration"


async def test_abort_if_authorization_timeout(hass, flow_handler, local_impl):
    """Check timeout generating authorization url."""
    flow_handler.async_register_implementation(hass, local_impl)

    flow = flow_handler()
    flow.hass = hass

    with patch.object(
        local_impl, "async_generate_authorize_url", side_effect=asyncio.TimeoutError
    ):
        result = await flow.async_step_user()

    assert result["type"] == data_entry_flow.RESULT_TYPE_ABORT
    assert result["reason"] == "authorize_url_timeout"


async def test_full_flow(
    hass, flow_handler, local_impl, aiohttp_client, aioclient_mock
):
    """Check full flow."""
    hass.config.api.base_url = "https://example.com"
    flow_handler.async_register_implementation(hass, local_impl)
    config_entry_oauth2_flow.async_register_implementation(
        hass, TEST_DOMAIN, MockOAuth2Implementation()
    )

    result = await hass.config_entries.flow.async_init(
        TEST_DOMAIN, context={"source": config_entries.SOURCE_USER}
    )

    assert result["type"] == data_entry_flow.RESULT_TYPE_FORM
    assert result["step_id"] == "pick_implementation"

    # Pick implementation
    result = await hass.config_entries.flow.async_configure(
        result["flow_id"], user_input={"implementation": TEST_DOMAIN}
    )

    state = config_entry_oauth2_flow._encode_jwt(hass, {"flow_id": result["flow_id"]})

    assert result["type"] == data_entry_flow.RESULT_TYPE_EXTERNAL_STEP
    assert result["url"] == (
        f"{AUTHORIZE_URL}?response_type=code&client_id={CLIENT_ID}"
        "&redirect_uri=https://example.com/auth/external/callback"
        f"&state={state}&scope=read+write"
    )

    client = await aiohttp_client(hass.http.app)
    resp = await client.get(f"/auth/external/callback?code=abcd&state={state}")
    assert resp.status == 200
    assert resp.headers["content-type"] == "text/html; charset=utf-8"

    aioclient_mock.post(
        TOKEN_URL,
        json={
            "refresh_token": REFRESH_TOKEN,
            "access_token": ACCESS_TOKEN_1,
            "type": "bearer",
            "expires_in": 60,
        },
    )

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

    assert result["data"]["auth_implementation"] == TEST_DOMAIN

    result["data"]["token"].pop("expires_at")
    assert result["data"]["token"] == {
        "refresh_token": REFRESH_TOKEN,
        "access_token": ACCESS_TOKEN_1,
        "type": "bearer",
        "expires_in": 60,
    }

    entry = hass.config_entries.async_entries(TEST_DOMAIN)[0]

    assert (
        await config_entry_oauth2_flow.async_get_config_entry_implementation(
            hass, entry
        )
        is local_impl
    )


async def test_local_refresh_token(hass, local_impl, aioclient_mock):
    """Test we can refresh token."""
    aioclient_mock.post(
        TOKEN_URL, json={"access_token": ACCESS_TOKEN_2, "expires_in": 100}
    )

    new_tokens = await local_impl.async_refresh_token(
        {
            "refresh_token": REFRESH_TOKEN,
            "access_token": ACCESS_TOKEN_1,
            "type": "bearer",
            "expires_in": 60,
        }
    )
    new_tokens.pop("expires_at")

    assert new_tokens == {
        "refresh_token": REFRESH_TOKEN,
        "access_token": ACCESS_TOKEN_2,
        "type": "bearer",
        "expires_in": 100,
    }

    assert len(aioclient_mock.mock_calls) == 1
    assert aioclient_mock.mock_calls[0][2] == {
        "client_id": CLIENT_ID,
        "client_secret": CLIENT_SECRET,
        "grant_type": "refresh_token",
        "refresh_token": REFRESH_TOKEN,
    }


async def test_oauth_session(hass, flow_handler, local_impl, aioclient_mock):
    """Test the OAuth2 session helper."""
    flow_handler.async_register_implementation(hass, local_impl)

    aioclient_mock.post(
        TOKEN_URL, json={"access_token": ACCESS_TOKEN_2, "expires_in": 100}
    )

    aioclient_mock.post("https://example.com", status=201)

    config_entry = MockConfigEntry(
        domain=TEST_DOMAIN,
        data={
            "auth_implementation": TEST_DOMAIN,
            "token": {
                "refresh_token": REFRESH_TOKEN,
                "access_token": ACCESS_TOKEN_1,
                "expires_in": 10,
                "expires_at": 0,  # Forces a refresh,
                "token_type": "bearer",
                "random_other_data": "should_stay",
            },
        },
    )

    now = time.time()
    session = config_entry_oauth2_flow.OAuth2Session(hass, config_entry, local_impl)
    resp = await session.async_request("post", "https://example.com")
    assert resp.status == 201

    # Refresh token, make request
    assert len(aioclient_mock.mock_calls) == 2

    assert (
        aioclient_mock.mock_calls[1][3]["authorization"] == f"Bearer {ACCESS_TOKEN_2}"
    )

    assert config_entry.data["token"]["refresh_token"] == REFRESH_TOKEN
    assert config_entry.data["token"]["access_token"] == ACCESS_TOKEN_2
    assert config_entry.data["token"]["expires_in"] == 100
    assert config_entry.data["token"]["random_other_data"] == "should_stay"
    assert round(config_entry.data["token"]["expires_at"] - now) == 100
