"""Tests for Home Assistant View."""
from decimal import Decimal
from http import HTTPStatus
import json
from unittest.mock import AsyncMock, Mock

from aiohttp.web_exceptions import (
    HTTPBadRequest,
    HTTPInternalServerError,
    HTTPUnauthorized,
)
import pytest
import voluptuous as vol

from homeassistant.components.http.view import (
    HomeAssistantView,
    request_handler_factory,
)
from homeassistant.exceptions import ServiceNotFound, Unauthorized


@pytest.fixture
def mock_request():
    """Mock a request."""
    return Mock(app={"hass": Mock(is_stopping=False)}, match_info={})


@pytest.fixture
def mock_request_with_stopping():
    """Mock a request."""
    return Mock(app={"hass": Mock(is_stopping=True)}, match_info={})


async def test_invalid_json(caplog: pytest.LogCaptureFixture) -> None:
    """Test trying to return invalid JSON."""
    with pytest.raises(HTTPInternalServerError):
        HomeAssistantView.json({"hello": Decimal("2.0")})

    assert (
        "Unable to serialize to JSON. Bad data found at $.hello=2.0(<class 'decimal.Decimal'>"
        in caplog.text
    )


async def test_nan_serialized_to_null() -> None:
    """Test nan serialized to null JSON."""
    response = HomeAssistantView.json(float("NaN"))
    assert json.loads(response.body.decode("utf-8")) is None


async def test_handling_unauthorized(mock_request) -> None:
    """Test handling unauth exceptions."""
    with pytest.raises(HTTPUnauthorized):
        await request_handler_factory(
            Mock(requires_auth=False), AsyncMock(side_effect=Unauthorized)
        )(mock_request)


async def test_handling_invalid_data(mock_request) -> None:
    """Test handling unauth exceptions."""
    with pytest.raises(HTTPBadRequest):
        await request_handler_factory(
            Mock(requires_auth=False), AsyncMock(side_effect=vol.Invalid("yo"))
        )(mock_request)


async def test_handling_service_not_found(mock_request) -> None:
    """Test handling unauth exceptions."""
    with pytest.raises(HTTPInternalServerError):
        await request_handler_factory(
            Mock(requires_auth=False),
            AsyncMock(side_effect=ServiceNotFound("test", "test")),
        )(mock_request)


async def test_not_running(mock_request_with_stopping) -> None:
    """Test we get a 503 when not running."""
    response = await request_handler_factory(
        Mock(requires_auth=False), AsyncMock(side_effect=Unauthorized)
    )(mock_request_with_stopping)
    assert response.status == HTTPStatus.SERVICE_UNAVAILABLE