Add camera platform to Dremel (#93882)

* Add camera platform to Dremel

* unload and tests

homeassistant/components/dremel_3d_printer/__init__.py

@@ -9,10 +9,10 @@ from homeassistant.const import CONF_HOST, Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 
-from .const import DOMAIN
+from .const import CAMERA_MODEL, DOMAIN
 from .coordinator import Dremel3DPrinterDataUpdateCoordinator
 
-PLATFORMS = [Platform.BINARY_SENSOR, Platform.SENSOR]
+PLATFORMS = [Platform.BINARY_SENSOR, Platform.CAMERA, Platform.SENSOR]
 
 
 async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> bool:
@@ -30,12 +30,19 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
     coordinator = Dremel3DPrinterDataUpdateCoordinator(hass, api)
     await coordinator.async_config_entry_first_refresh()
     hass.data.setdefault(DOMAIN, {})[config_entry.entry_id] = coordinator
-    await hass.config_entries.async_forward_entry_setups(config_entry, PLATFORMS)
+    platforms = list(PLATFORMS)
+    if api.get_model() != CAMERA_MODEL:
+        platforms.remove(Platform.CAMERA)
+    await hass.config_entries.async_forward_entry_setups(config_entry, platforms)
     return True
 
 
 async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Unload Dremel config entry."""
-    if unload_ok := await hass.config_entries.async_unload_platforms(entry, PLATFORMS):
+    platforms = list(PLATFORMS)
-        hass.data.pop(DOMAIN)
+    api: Dremel3DPrinter = hass.data[DOMAIN][entry.entry_id].api
+    if api.get_model() != CAMERA_MODEL:
+        platforms.remove(Platform.CAMERA)
+    if unload_ok := await hass.config_entries.async_unload_platforms(entry, platforms):
+        hass.data[DOMAIN].pop(entry.entry_id)
     return unload_ok

homeassistant/components/dremel_3d_printer/camera.py

@@ -0,0 +1,44 @@
+"""Support for Dremel 3D45 Camera."""
+from __future__ import annotations
+
+from homeassistant.components.camera import CameraEntityDescription
+from homeassistant.components.mjpeg import MjpegCamera
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import Dremel3DPrinterDataUpdateCoordinator
+from .const import DOMAIN
+from .entity import Dremel3DPrinterEntity
+
+CAMERA_TYPE = CameraEntityDescription(
+    key="camera",
+    name="Camera",
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up a MJPEG IP Camera for the 3D45 Model. The 3D20 and 3D40 models don't have built in cameras."""
+    coordinator = hass.data[DOMAIN][config_entry.entry_id]
+    async_add_entities([Dremel3D45Camera(coordinator, CAMERA_TYPE)])
+
+
+class Dremel3D45Camera(Dremel3DPrinterEntity, MjpegCamera):
+    """Dremel 3D45 Camera."""
+
+    def __init__(
+        self,
+        coordinator: Dremel3DPrinterDataUpdateCoordinator,
+        description: CameraEntityDescription,
+    ) -> None:
+        """Initialize a new Dremel 3D Printer integration camera for the 3D45 model."""
+        super().__init__(coordinator, description)
+        MjpegCamera.__init__(
+            self,
+            mjpeg_url=coordinator.api.get_stream_url(),
+            still_image_url=coordinator.api.get_snapshot_url(),
+        )

homeassistant/components/dremel_3d_printer/const.py

@@ -5,6 +5,8 @@ import logging
 
 LOGGER = logging.getLogger(__package__)
 
+CAMERA_MODEL = "3D45"
+
 DOMAIN = "dremel_3d_printer"
 
 ATTR_EXTRUDER = "extruder"

tests/components/dremel_3d_printer/test_init.py

@@ -2,6 +2,7 @@
 from datetime import timedelta
 from unittest.mock import patch
 
+import pytest
 from requests.exceptions import ConnectTimeout
 
 from homeassistant.components.dremel_3d_printer.const import DOMAIN
@@ -14,20 +15,27 @@ import homeassistant.util.dt as dt_util
 
 from tests.common import MockConfigEntry, async_fire_time_changed
 
+MOCKED_MODEL = "homeassistant.components.dremel_3d_printer.Dremel3DPrinter.get_model"
 
+
+@pytest.mark.parametrize("model", ["3D45", "3D20"])
 async def test_setup(
-    hass: HomeAssistant, connection, config_entry: MockConfigEntry
+    hass: HomeAssistant, connection, config_entry: MockConfigEntry, model: str
 ) -> None:
     """Test load and unload."""
+    with patch(MOCKED_MODEL, return_value=model) as mock:
         await hass.config_entries.async_setup(config_entry.entry_id)
         assert await async_setup_component(hass, DOMAIN, {})
     assert config_entry.state == ConfigEntryState.LOADED
+    assert mock.called
 
+    with patch(MOCKED_MODEL, return_value=model) as mock:
         assert await hass.config_entries.async_unload(config_entry.entry_id)
         await hass.async_block_till_done()
 
     assert config_entry.state is ConfigEntryState.NOT_LOADED
     assert not hass.data.get(DOMAIN)
+    assert mock.called
 
 
 async def test_async_setup_entry_not_ready(