"""The tests for the camera component."""
import asyncio
from http import HTTPStatus
import io
from unittest.mock import AsyncMock, Mock, PropertyMock, mock_open, patch

import pytest

from homeassistant.components import camera
from homeassistant.components.camera.const import (
    DOMAIN,
    PREF_ORIENTATION,
    PREF_PRELOAD_STREAM,
)
from homeassistant.components.websocket_api.const import TYPE_RESULT
from homeassistant.config import async_process_ha_core_config
from homeassistant.const import (
    ATTR_ENTITY_ID,
    EVENT_HOMEASSISTANT_STARTED,
    STATE_UNAVAILABLE,
)
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers import entity_registry as er
from homeassistant.setup import async_setup_component

from .common import EMPTY_8_6_JPEG, WEBRTC_ANSWER, mock_turbo_jpeg

STREAM_SOURCE = "rtsp://127.0.0.1/stream"
HLS_STREAM_SOURCE = "http://127.0.0.1/example.m3u"
WEBRTC_OFFER = "v=0\r\n"


@pytest.fixture(name="mock_stream")
def mock_stream_fixture(hass):
    """Initialize a demo camera platform with streaming."""
    assert hass.loop.run_until_complete(
        async_setup_component(hass, "stream", {"stream": {}})
    )


@pytest.fixture(name="image_mock_url")
async def image_mock_url_fixture(hass):
    """Fixture for get_image tests."""
    await async_setup_component(
        hass, camera.DOMAIN, {camera.DOMAIN: {"platform": "demo"}}
    )
    await hass.async_block_till_done()


@pytest.fixture(name="mock_stream_source")
async def mock_stream_source_fixture():
    """Fixture to create an RTSP stream source."""
    with patch(
        "homeassistant.components.camera.Camera.stream_source",
        return_value=STREAM_SOURCE,
    ) as mock_stream_source, patch(
        "homeassistant.components.camera.Camera.supported_features",
        return_value=camera.CameraEntityFeature.STREAM,
    ):
        yield mock_stream_source


@pytest.fixture(name="mock_hls_stream_source")
async def mock_hls_stream_source_fixture():
    """Fixture to create an HLS stream source."""
    with patch(
        "homeassistant.components.camera.Camera.stream_source",
        return_value=HLS_STREAM_SOURCE,
    ) as mock_hls_stream_source, patch(
        "homeassistant.components.camera.Camera.supported_features",
        return_value=camera.CameraEntityFeature.STREAM,
    ):
        yield mock_hls_stream_source


async def provide_web_rtc_answer(stream_source: str, offer: str, stream_id: str) -> str:
    """Simulate an rtsp to webrtc provider."""
    assert stream_source == STREAM_SOURCE
    assert offer == WEBRTC_OFFER
    return WEBRTC_ANSWER


@pytest.fixture(name="mock_rtsp_to_web_rtc")
async def mock_rtsp_to_web_rtc_fixture(hass):
    """Fixture that registers a mock rtsp to web_rtc provider."""
    mock_provider = Mock(side_effect=provide_web_rtc_answer)
    unsub = camera.async_register_rtsp_to_web_rtc_provider(
        hass, "mock_domain", mock_provider
    )
    yield mock_provider
    unsub()


async def test_get_image_from_camera(hass, image_mock_url):
    """Grab an image from camera entity."""

    with patch(
        "homeassistant.components.demo.camera.Path.read_bytes",
        autospec=True,
        return_value=b"Test",
    ) as mock_camera:
        image = await camera.async_get_image(hass, "camera.demo_camera")

    assert mock_camera.called
    assert image.content == b"Test"


async def test_get_image_from_camera_with_width_height(hass, image_mock_url):
    """Grab an image from camera entity with width and height."""

    turbo_jpeg = mock_turbo_jpeg(
        first_width=16, first_height=12, second_width=300, second_height=200
    )
    with patch(
        "homeassistant.components.camera.img_util.TurboJPEGSingleton.instance",
        return_value=turbo_jpeg,
    ), patch(
        "homeassistant.components.demo.camera.Path.read_bytes",
        autospec=True,
        return_value=b"Test",
    ) as mock_camera:
        image = await camera.async_get_image(
            hass, "camera.demo_camera", width=640, height=480
        )

    assert mock_camera.called
    assert image.content == b"Test"


async def test_get_image_from_camera_with_width_height_scaled(hass, image_mock_url):
    """Grab an image from camera entity with width and height and scale it."""

    turbo_jpeg = mock_turbo_jpeg(
        first_width=16, first_height=12, second_width=300, second_height=200
    )
    with patch(
        "homeassistant.components.camera.img_util.TurboJPEGSingleton.instance",
        return_value=turbo_jpeg,
    ), patch(
        "homeassistant.components.demo.camera.Path.read_bytes",
        autospec=True,
        return_value=b"Valid jpeg",
    ) as mock_camera:
        image = await camera.async_get_image(
            hass, "camera.demo_camera", width=4, height=3
        )

    assert mock_camera.called
    assert image.content_type == "image/jpg"
    assert image.content == EMPTY_8_6_JPEG


async def test_get_image_from_camera_not_jpeg(hass, image_mock_url):
    """Grab an image from camera entity that we cannot scale."""

    turbo_jpeg = mock_turbo_jpeg(
        first_width=16, first_height=12, second_width=300, second_height=200
    )
    with patch(
        "homeassistant.components.camera.img_util.TurboJPEGSingleton.instance",
        return_value=turbo_jpeg,
    ), patch(
        "homeassistant.components.demo.camera.Path.read_bytes",
        autospec=True,
        return_value=b"png",
    ) as mock_camera:
        image = await camera.async_get_image(
            hass, "camera.demo_camera_png", width=4, height=3
        )

    assert mock_camera.called
    assert image.content_type == "image/png"
    assert image.content == b"png"


async def test_get_stream_source_from_camera(hass, mock_camera, mock_stream_source):
    """Fetch stream source from camera entity."""

    stream_source = await camera.async_get_stream_source(hass, "camera.demo_camera")

    assert mock_stream_source.called
    assert stream_source == STREAM_SOURCE


async def test_get_image_without_exists_camera(hass, image_mock_url):
    """Try to get image without exists camera."""
    with patch(
        "homeassistant.helpers.entity_component.EntityComponent.get_entity",
        return_value=None,
    ), pytest.raises(HomeAssistantError):
        await camera.async_get_image(hass, "camera.demo_camera")


async def test_get_image_with_timeout(hass, image_mock_url):
    """Try to get image with timeout."""
    with patch(
        "homeassistant.components.demo.camera.DemoCamera.async_camera_image",
        side_effect=asyncio.TimeoutError,
    ), pytest.raises(HomeAssistantError):
        await camera.async_get_image(hass, "camera.demo_camera")


async def test_get_image_fails(hass, image_mock_url):
    """Try to get image with timeout."""
    with patch(
        "homeassistant.components.demo.camera.DemoCamera.async_camera_image",
        return_value=None,
    ), pytest.raises(HomeAssistantError):
        await camera.async_get_image(hass, "camera.demo_camera")


async def test_snapshot_service(hass, mock_camera):
    """Test snapshot service."""
    mopen = mock_open()

    with patch("homeassistant.components.camera.open", mopen, create=True), patch(
        "homeassistant.components.camera.os.makedirs",
    ), patch.object(hass.config, "is_allowed_path", return_value=True):
        await hass.services.async_call(
            camera.DOMAIN,
            camera.SERVICE_SNAPSHOT,
            {
                ATTR_ENTITY_ID: "camera.demo_camera",
                camera.ATTR_FILENAME: "/test/snapshot.jpg",
            },
            blocking=True,
        )

        mock_write = mopen().write

        assert len(mock_write.mock_calls) == 1
        assert mock_write.mock_calls[0][1][0] == b"Test"


async def test_websocket_stream_no_source(
    hass, hass_ws_client, mock_camera, mock_stream
):
    """Test camera/stream websocket command with camera with no source."""
    await async_setup_component(hass, "camera", {})

    # Request playlist through WebSocket
    client = await hass_ws_client(hass)
    await client.send_json(
        {"id": 6, "type": "camera/stream", "entity_id": "camera.demo_camera"}
    )
    msg = await client.receive_json()

    # Assert WebSocket response
    assert msg["id"] == 6
    assert msg["type"] == TYPE_RESULT
    assert not msg["success"]


async def test_websocket_camera_stream(hass, hass_ws_client, mock_camera, mock_stream):
    """Test camera/stream websocket command."""
    await async_setup_component(hass, "camera", {})

    with patch(
        "homeassistant.components.camera.Stream.endpoint_url",
        return_value="http://home.assistant/playlist.m3u8",
    ) as mock_stream_view_url, patch(
        "homeassistant.components.demo.camera.DemoCamera.stream_source",
        return_value="http://example.com",
    ):
        # Request playlist through WebSocket
        client = await hass_ws_client(hass)
        await client.send_json(
            {"id": 6, "type": "camera/stream", "entity_id": "camera.demo_camera"}
        )
        msg = await client.receive_json()

        # Assert WebSocket response
        assert mock_stream_view_url.called
        assert msg["id"] == 6
        assert msg["type"] == TYPE_RESULT
        assert msg["success"]
        assert msg["result"]["url"][-13:] == "playlist.m3u8"


async def test_websocket_get_prefs(hass, hass_ws_client, mock_camera):
    """Test get camera preferences websocket command."""
    await async_setup_component(hass, "camera", {})

    # Request preferences through websocket
    client = await hass_ws_client(hass)
    await client.send_json(
        {"id": 7, "type": "camera/get_prefs", "entity_id": "camera.demo_camera"}
    )
    msg = await client.receive_json()

    # Assert WebSocket response
    assert msg["success"]


async def test_websocket_update_preload_prefs(hass, hass_ws_client, mock_camera):
    """Test updating camera preferences."""

    client = await hass_ws_client(hass)
    await client.send_json(
        {"id": 7, "type": "camera/get_prefs", "entity_id": "camera.demo_camera"}
    )
    msg = await client.receive_json()

    # The default prefs should be returned. Preload stream should be False
    assert msg["success"]
    assert msg["result"][PREF_PRELOAD_STREAM] is False

    # Update the preference
    await client.send_json(
        {
            "id": 8,
            "type": "camera/update_prefs",
            "entity_id": "camera.demo_camera",
            "preload_stream": True,
        }
    )
    msg = await client.receive_json()
    assert msg["success"]
    assert msg["result"][PREF_PRELOAD_STREAM] is True

    # Check that the preference was saved
    await client.send_json(
        {"id": 9, "type": "camera/get_prefs", "entity_id": "camera.demo_camera"}
    )
    msg = await client.receive_json()
    # preload_stream entry for this camera should have been added
    assert msg["result"][PREF_PRELOAD_STREAM] is True


async def test_websocket_update_orientation_prefs(hass, hass_ws_client, mock_camera):
    """Test updating camera preferences."""

    client = await hass_ws_client(hass)

    # Try sending orientation update for entity not in entity registry
    await client.send_json(
        {
            "id": 10,
            "type": "camera/update_prefs",
            "entity_id": "camera.demo_uniquecamera",
            "orientation": 3,
        }
    )
    response = await client.receive_json()
    assert not response["success"]
    assert response["error"]["code"] == "update_failed"

    registry = er.async_get(hass)
    assert not registry.async_get("camera.demo_uniquecamera")
    # Since we don't have a unique id, we need to create a registry entry
    registry.async_get_or_create(DOMAIN, "demo", "uniquecamera")
    registry.async_update_entity_options(
        "camera.demo_uniquecamera",
        DOMAIN,
        {},
    )

    await client.send_json(
        {
            "id": 11,
            "type": "camera/update_prefs",
            "entity_id": "camera.demo_uniquecamera",
            "orientation": 3,
        }
    )
    response = await client.receive_json()
    assert response["success"]

    er_camera_prefs = registry.async_get("camera.demo_uniquecamera").options[DOMAIN]
    assert er_camera_prefs[PREF_ORIENTATION] == camera.Orientation.ROTATE_180
    assert response["result"][PREF_ORIENTATION] == er_camera_prefs[PREF_ORIENTATION]
    # Check that the preference was saved
    await client.send_json(
        {"id": 12, "type": "camera/get_prefs", "entity_id": "camera.demo_uniquecamera"}
    )
    msg = await client.receive_json()
    # orientation entry for this camera should have been added
    assert msg["result"]["orientation"] == camera.Orientation.ROTATE_180


async def test_play_stream_service_no_source(hass, mock_camera, mock_stream):
    """Test camera play_stream service."""
    data = {
        ATTR_ENTITY_ID: "camera.demo_camera",
        camera.ATTR_MEDIA_PLAYER: "media_player.test",
    }
    with pytest.raises(HomeAssistantError):
        # Call service
        await hass.services.async_call(
            camera.DOMAIN, camera.SERVICE_PLAY_STREAM, data, blocking=True
        )


async def test_handle_play_stream_service(hass, mock_camera, mock_stream):
    """Test camera play_stream service."""
    await async_process_ha_core_config(
        hass,
        {"external_url": "https://example.com"},
    )
    await async_setup_component(hass, "media_player", {})
    with patch(
        "homeassistant.components.camera.Stream.endpoint_url",
    ) as mock_request_stream, patch(
        "homeassistant.components.demo.camera.DemoCamera.stream_source",
        return_value="http://example.com",
    ):
        # Call service
        await hass.services.async_call(
            camera.DOMAIN,
            camera.SERVICE_PLAY_STREAM,
            {
                ATTR_ENTITY_ID: "camera.demo_camera",
                camera.ATTR_MEDIA_PLAYER: "media_player.test",
            },
            blocking=True,
        )
        # So long as we request the stream, the rest should be covered
        # by the play_media service tests.
        assert mock_request_stream.called


async def test_no_preload_stream(hass, mock_stream):
    """Test camera preload preference."""
    demo_settings = camera.DynamicStreamSettings()
    with patch(
        "homeassistant.components.camera.Stream.endpoint_url",
    ) as mock_request_stream, patch(
        "homeassistant.components.camera.prefs.CameraPreferences.get_dynamic_stream_settings",
        return_value=demo_settings,
    ), patch(
        "homeassistant.components.demo.camera.DemoCamera.stream_source",
        new_callable=PropertyMock,
    ) as mock_stream_source:
        mock_stream_source.return_value = io.BytesIO()
        await async_setup_component(hass, "camera", {DOMAIN: {"platform": "demo"}})
        hass.bus.async_fire(EVENT_HOMEASSISTANT_STARTED)
        await hass.async_block_till_done()
        assert not mock_request_stream.called


async def test_preload_stream(hass, mock_stream):
    """Test camera preload preference."""
    demo_settings = camera.DynamicStreamSettings(preload_stream=True)
    with patch(
        "homeassistant.components.camera.create_stream"
    ) as mock_create_stream, patch(
        "homeassistant.components.camera.prefs.CameraPreferences.get_dynamic_stream_settings",
        return_value=demo_settings,
    ), patch(
        "homeassistant.components.demo.camera.DemoCamera.stream_source",
        return_value="http://example.com",
    ):
        mock_create_stream.return_value.start = AsyncMock()
        assert await async_setup_component(
            hass, "camera", {DOMAIN: {"platform": "demo"}}
        )
        await hass.async_block_till_done()
        hass.bus.async_fire(EVENT_HOMEASSISTANT_STARTED)
        await hass.async_block_till_done()
        assert mock_create_stream.called


async def test_record_service_invalid_path(hass, mock_camera):
    """Test record service with invalid path."""
    with patch.object(
        hass.config, "is_allowed_path", return_value=False
    ), pytest.raises(HomeAssistantError):
        # Call service
        await hass.services.async_call(
            camera.DOMAIN,
            camera.SERVICE_RECORD,
            {
                ATTR_ENTITY_ID: "camera.demo_camera",
                camera.CONF_FILENAME: "/my/invalid/path",
            },
            blocking=True,
        )


async def test_record_service(hass, mock_camera, mock_stream):
    """Test record service."""
    with patch(
        "homeassistant.components.demo.camera.DemoCamera.stream_source",
        return_value="http://example.com",
    ), patch(
        "homeassistant.components.stream.Stream.async_record",
        autospec=True,
    ) as mock_record:
        # Call service
        await hass.services.async_call(
            camera.DOMAIN,
            camera.SERVICE_RECORD,
            {ATTR_ENTITY_ID: "camera.demo_camera", camera.CONF_FILENAME: "/my/path"},
            blocking=True,
        )
        # So long as we call stream.record, the rest should be covered
        # by those tests.
        assert mock_record.called


async def test_camera_proxy_stream(hass, mock_camera, hass_client):
    """Test record service."""

    client = await hass_client()

    async with client.get("/api/camera_proxy_stream/camera.demo_camera") as response:
        assert response.status == HTTPStatus.OK

    with patch(
        "homeassistant.components.demo.camera.DemoCamera.handle_async_mjpeg_stream",
        return_value=None,
    ):
        async with await client.get(
            "/api/camera_proxy_stream/camera.demo_camera"
        ) as response:
            assert response.status == HTTPStatus.BAD_GATEWAY


async def test_websocket_web_rtc_offer(
    hass,
    hass_ws_client,
    mock_camera_web_rtc,
):
    """Test initiating a WebRTC stream with offer and answer."""
    client = await hass_ws_client(hass)
    await client.send_json(
        {
            "id": 9,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()

    assert response["id"] == 9
    assert response["type"] == TYPE_RESULT
    assert response["success"]
    assert response["result"]["answer"] == WEBRTC_ANSWER


async def test_websocket_web_rtc_offer_invalid_entity(
    hass,
    hass_ws_client,
    mock_camera_web_rtc,
):
    """Test WebRTC with a camera entity that does not exist."""
    client = await hass_ws_client(hass)
    await client.send_json(
        {
            "id": 9,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.does_not_exist",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()

    assert response["id"] == 9
    assert response["type"] == TYPE_RESULT
    assert not response["success"]


async def test_websocket_web_rtc_offer_missing_offer(
    hass,
    hass_ws_client,
    mock_camera_web_rtc,
):
    """Test WebRTC stream with missing required fields."""
    client = await hass_ws_client(hass)
    await client.send_json(
        {
            "id": 9,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
        }
    )
    response = await client.receive_json()

    assert response["id"] == 9
    assert response["type"] == TYPE_RESULT
    assert not response["success"]
    assert response["error"]["code"] == "invalid_format"


async def test_websocket_web_rtc_offer_failure(
    hass,
    hass_ws_client,
    mock_camera_web_rtc,
):
    """Test WebRTC stream that fails handling the offer."""
    client = await hass_ws_client(hass)

    with patch(
        "homeassistant.components.camera.Camera.async_handle_web_rtc_offer",
        side_effect=HomeAssistantError("offer failed"),
    ):
        await client.send_json(
            {
                "id": 9,
                "type": "camera/web_rtc_offer",
                "entity_id": "camera.demo_camera",
                "offer": WEBRTC_OFFER,
            }
        )
        response = await client.receive_json()

    assert response["id"] == 9
    assert response["type"] == TYPE_RESULT
    assert not response["success"]
    assert response["error"]["code"] == "web_rtc_offer_failed"
    assert response["error"]["message"] == "offer failed"


async def test_websocket_web_rtc_offer_timeout(
    hass,
    hass_ws_client,
    mock_camera_web_rtc,
):
    """Test WebRTC stream with timeout handling the offer."""
    client = await hass_ws_client(hass)

    with patch(
        "homeassistant.components.camera.Camera.async_handle_web_rtc_offer",
        side_effect=asyncio.TimeoutError(),
    ):
        await client.send_json(
            {
                "id": 9,
                "type": "camera/web_rtc_offer",
                "entity_id": "camera.demo_camera",
                "offer": WEBRTC_OFFER,
            }
        )
        response = await client.receive_json()

    assert response["id"] == 9
    assert response["type"] == TYPE_RESULT
    assert not response["success"]
    assert response["error"]["code"] == "web_rtc_offer_failed"
    assert response["error"]["message"] == "Timeout handling WebRTC offer"


async def test_websocket_web_rtc_offer_invalid_stream_type(
    hass,
    hass_ws_client,
    mock_camera,
):
    """Test WebRTC initiating for a camera with a different stream_type."""
    client = await hass_ws_client(hass)
    await client.send_json(
        {
            "id": 9,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()

    assert response["id"] == 9
    assert response["type"] == TYPE_RESULT
    assert not response["success"]
    assert response["error"]["code"] == "web_rtc_offer_failed"


async def test_state_streaming(hass, hass_ws_client, mock_camera):
    """Camera state."""
    demo_camera = hass.states.get("camera.demo_camera")
    assert demo_camera is not None
    assert demo_camera.state == camera.STATE_STREAMING


async def test_stream_unavailable(hass, hass_ws_client, mock_camera, mock_stream):
    """Camera state."""
    await async_setup_component(hass, "camera", {})

    with patch(
        "homeassistant.components.camera.Stream.endpoint_url",
        return_value="http://home.assistant/playlist.m3u8",
    ), patch(
        "homeassistant.components.demo.camera.DemoCamera.stream_source",
        return_value="http://example.com",
    ), patch(
        "homeassistant.components.camera.Stream.set_update_callback",
    ) as mock_update_callback:
        # Request playlist through WebSocket. We just want to create the stream
        # but don't care about the result.
        client = await hass_ws_client(hass)
        await client.send_json(
            {"id": 10, "type": "camera/stream", "entity_id": "camera.demo_camera"}
        )
        await client.receive_json()
        assert mock_update_callback.called

    # Simulate the stream going unavailable
    callback = mock_update_callback.call_args.args[0]
    with patch(
        "homeassistant.components.camera.Stream.available", new_callable=lambda: False
    ):
        callback()
        await hass.async_block_till_done()

    demo_camera = hass.states.get("camera.demo_camera")
    assert demo_camera is not None
    assert demo_camera.state == STATE_UNAVAILABLE

    # Simulate stream becomes available
    with patch(
        "homeassistant.components.camera.Stream.available", new_callable=lambda: True
    ):
        callback()
        await hass.async_block_till_done()

    demo_camera = hass.states.get("camera.demo_camera")
    assert demo_camera is not None
    assert demo_camera.state == camera.STATE_STREAMING


async def test_rtsp_to_web_rtc_offer(
    hass,
    hass_ws_client,
    mock_camera,
    mock_stream_source,
    mock_rtsp_to_web_rtc,
):
    """Test creating a web_rtc offer from an rstp provider."""
    client = await hass_ws_client(hass)
    await client.send_json(
        {
            "id": 9,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()

    assert response.get("id") == 9
    assert response.get("type") == TYPE_RESULT
    assert response.get("success")
    assert "result" in response
    assert response["result"] == {"answer": WEBRTC_ANSWER}

    assert mock_rtsp_to_web_rtc.called


async def test_unsupported_rtsp_to_web_rtc_stream_type(
    hass,
    hass_ws_client,
    mock_camera,
    mock_hls_stream_source,  # Not an RTSP stream source
    mock_rtsp_to_web_rtc,
):
    """Test rtsp-to-webrtc is not registered for non-RTSP streams."""
    client = await hass_ws_client(hass)
    await client.send_json(
        {
            "id": 10,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()

    assert response.get("id") == 10
    assert response.get("type") == TYPE_RESULT
    assert "success" in response
    assert not response["success"]


async def test_rtsp_to_web_rtc_provider_unregistered(
    hass,
    hass_ws_client,
    mock_camera,
    mock_stream_source,
):
    """Test creating a web_rtc offer from an rstp provider."""
    mock_provider = Mock(side_effect=provide_web_rtc_answer)
    unsub = camera.async_register_rtsp_to_web_rtc_provider(
        hass, "mock_domain", mock_provider
    )

    client = await hass_ws_client(hass)

    # Registered provider can handle the WebRTC offer
    await client.send_json(
        {
            "id": 11,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()
    assert response["id"] == 11
    assert response["type"] == TYPE_RESULT
    assert response["success"]
    assert response["result"]["answer"] == WEBRTC_ANSWER

    assert mock_provider.called
    mock_provider.reset_mock()

    # Unregister provider, then verify the WebRTC offer cannot be handled
    unsub()
    await client.send_json(
        {
            "id": 12,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()
    assert response.get("id") == 12
    assert response.get("type") == TYPE_RESULT
    assert "success" in response
    assert not response["success"]

    assert not mock_provider.called


async def test_rtsp_to_web_rtc_offer_not_accepted(
    hass,
    hass_ws_client,
    mock_camera,
    mock_stream_source,
):
    """Test a provider that can't satisfy the rtsp to webrtc offer."""

    async def provide_none(stream_source: str, offer: str) -> str:
        """Simulate a provider that can't accept the offer."""
        return None

    mock_provider = Mock(side_effect=provide_none)
    unsub = camera.async_register_rtsp_to_web_rtc_provider(
        hass, "mock_domain", mock_provider
    )
    client = await hass_ws_client(hass)

    # Registered provider can handle the WebRTC offer
    await client.send_json(
        {
            "id": 11,
            "type": "camera/web_rtc_offer",
            "entity_id": "camera.demo_camera",
            "offer": WEBRTC_OFFER,
        }
    )
    response = await client.receive_json()
    assert response["id"] == 11
    assert response.get("type") == TYPE_RESULT
    assert "success" in response
    assert not response["success"]

    assert mock_provider.called

    unsub()