Prepare the integration for HACS installation

custom_components/immich_album_watcher/camera.py

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+"""Camera platform for Immich Album Watcher."""
+
+from __future__ import annotations
+
+import logging
+from datetime import timedelta
+
+import aiohttp
+
+from homeassistant.components.camera import Camera
+from homeassistant.config_entries import ConfigEntry, ConfigSubentry
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.device_registry import DeviceEntryType
+from homeassistant.helpers.entity import DeviceInfo
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+from homeassistant.util import slugify
+
+from .const import CONF_ALBUM_ID, CONF_ALBUM_NAME, CONF_HUB_NAME, DOMAIN
+from .coordinator import AlbumData, ImmichAlbumWatcherCoordinator
+
+_LOGGER = logging.getLogger(__name__)
+
+SCAN_INTERVAL = timedelta(seconds=60)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up Immich Album Watcher cameras from a config entry."""
+    # Iterate through all album subentries
+    for subentry_id, subentry in entry.subentries.items():
+        subentry_data = hass.data[DOMAIN][entry.entry_id]["subentries"].get(subentry_id)
+        if not subentry_data:
+            _LOGGER.error("Subentry data not found for %s", subentry_id)
+            continue
+
+        coordinator = subentry_data.coordinator
+
+        async_add_entities(
+            [ImmichAlbumThumbnailCamera(coordinator, entry, subentry)],
+            config_subentry_id=subentry_id,
+        )
+
+
+class ImmichAlbumThumbnailCamera(
+    CoordinatorEntity[ImmichAlbumWatcherCoordinator], Camera
+):
+    """Camera entity showing the album thumbnail."""
+
+    _attr_has_entity_name = True
+    _attr_translation_key = "album_thumbnail"
+
+    def __init__(
+        self,
+        coordinator: ImmichAlbumWatcherCoordinator,
+        entry: ConfigEntry,
+        subentry: ConfigSubentry,
+    ) -> None:
+        """Initialize the camera."""
+        CoordinatorEntity.__init__(self, coordinator)
+        Camera.__init__(self)
+        self._entry = entry
+        self._subentry = subentry
+        self._album_id = subentry.data[CONF_ALBUM_ID]
+        self._album_name = subentry.data.get(CONF_ALBUM_NAME, "Unknown Album")
+        self._hub_name = entry.data.get(CONF_HUB_NAME, "Immich")
+        unique_id_prefix = slugify(f"{self._hub_name}_album_{self._album_name}")
+        self._attr_unique_id = f"{unique_id_prefix}_thumbnail"
+        self._cached_image: bytes | None = None
+        self._last_thumbnail_id: str | None = None
+
+    @property
+    def _album_data(self) -> AlbumData | None:
+        """Get the album data from coordinator."""
+        return self.coordinator.data
+
+    @property
+    def translation_placeholders(self) -> dict[str, str]:
+        """Return translation placeholders."""
+        if self._album_data:
+            return {"album_name": self._album_data.name}
+        return {"album_name": self._album_name}
+
+    @property
+    def available(self) -> bool:
+        """Return if entity is available."""
+        return (
+            self.coordinator.last_update_success
+            and self._album_data is not None
+            and self._album_data.thumbnail_asset_id is not None
+        )
+
+    @property
+    def device_info(self) -> DeviceInfo:
+        """Return device info - one device per album."""
+        return DeviceInfo(
+            identifiers={(DOMAIN, self._subentry.subentry_id)},
+            name=self._album_name,
+            manufacturer="Immich",
+            entry_type=DeviceEntryType.SERVICE,
+            via_device=(DOMAIN, self._entry.entry_id),
+        )
+
+    @property
+    def extra_state_attributes(self) -> dict[str, str | None]:
+        """Return extra state attributes."""
+        if not self._album_data:
+            return {}
+
+        return {
+            "album_id": self._album_data.id,
+            "album_name": self._album_data.name,
+            "thumbnail_asset_id": self._album_data.thumbnail_asset_id,
+        }
+
+    async def async_camera_image(
+        self, width: int | None = None, height: int | None = None
+    ) -> bytes | None:
+        """Return bytes of camera image."""
+        if not self._album_data or not self._album_data.thumbnail_asset_id:
+            return None
+
+        # Check if thumbnail changed
+        if self._album_data.thumbnail_asset_id == self._last_thumbnail_id:
+            if self._cached_image:
+                return self._cached_image
+
+        # Fetch new thumbnail
+        session = async_get_clientsession(self.hass)
+        headers = {"x-api-key": self.coordinator.api_key}
+
+        thumbnail_url = (
+            f"{self.coordinator.immich_url}/api/assets/"
+            f"{self._album_data.thumbnail_asset_id}/thumbnail"
+        )
+
+        try:
+            async with session.get(thumbnail_url, headers=headers) as response:
+                if response.status == 200:
+                    self._cached_image = await response.read()
+                    self._last_thumbnail_id = self._album_data.thumbnail_asset_id
+                    return self._cached_image
+                else:
+                    _LOGGER.warning(
+                        "Failed to fetch thumbnail for album %s: HTTP %s",
+                        self._album_data.name,
+                        response.status,
+                    )
+        except aiohttp.ClientError as err:
+            _LOGGER.error("Error fetching thumbnail: %s", err)
+
+        return self._cached_image
+
+    @callback
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        # Clear cache if thumbnail changed
+        if self._album_data and self._album_data.thumbnail_asset_id != self._last_thumbnail_id:
+            self._cached_image = None
+        self.async_write_ha_state()