Add SQLite dashboard cache

app/main.py

@@ -12,6 +12,7 @@ from fastapi import FastAPI
 from fastapi.responses import FileResponse
 from fastapi.staticfiles import StaticFiles
 
+from app.actuators.cache_db import DashboardCache
 from app.actuators.lifecycle import ActuatorReconciliationService
 from app.actuators.store import ActuatorStore
 from app.api.v1.actuators import router as actuators_router
@@ -20,6 +21,7 @@ from app.behavior.engine import BehaviorEngine
 from app.config import load_settings
 from app.core.exception_handlers import register_exception_handlers
 from app.ha.client import HaClient, HaClientSettings
+from app.ha.discovery import discover_entities
 from app.ha.models import HaEntitySummary
 from app.ha.reader import HaReader
 from app.ml.registry.model_registry import ModelRegistry
@@ -47,8 +49,12 @@ async def lifespan(app: FastAPI) -> AsyncIterator[None]:
     reconcile_task: asyncio.Task[None] | None = None
     event_listener_task: asyncio.Task[None] | None = None
     fallback_task: asyncio.Task[None] | None = None
+    cache_refresh_task: asyncio.Task[None] | None = None
     app.state.registry = ModelRegistry(settings.model_store)
     app.state.actuator_store = ActuatorStore(settings.actuator_store)
+    app.state.dashboard_cache = DashboardCache(
+        Path(settings.actuator_store).resolve() / "dashboard_cache.sqlite3"
+    )
     if hasattr(app.state, "ha_reader"):
         del app.state.ha_reader
     if hasattr(app.state, "actuator_service"):
@@ -80,6 +86,7 @@ async def lifespan(app: FastAPI) -> AsyncIterator[None]:
         reconcile_task = asyncio.create_task(_periodic_reconciliation(app))
         event_listener_task = asyncio.create_task(_ha_event_listener(app, client))
         fallback_task = asyncio.create_task(_fallback_prediction(app))
+        cache_refresh_task = asyncio.create_task(_periodic_dashboard_cache_refresh(app))
     try:
         yield
     finally:
@@ -99,6 +106,10 @@ async def lifespan(app: FastAPI) -> AsyncIterator[None]:
             fallback_task.cancel()
             with suppress(asyncio.CancelledError):
                 await fallback_task
+        if cache_refresh_task is not None:
+            cache_refresh_task.cancel()
+            with suppress(asyncio.CancelledError):
+                await cache_refresh_task
         if client is not None:
             client.close()
 
@@ -106,7 +117,7 @@ async def lifespan(app: FastAPI) -> AsyncIterator[None]:
 app = FastAPI(
     title="SillyHome Next API",
     description="Lokales Smart-Home-Intelligenzsystem für Home Assistant.",
-    version="1.5.2",
+    version="1.5.3",
     lifespan=lifespan,
 )
 app.state.settings = load_settings()
@@ -160,6 +171,42 @@ async def _periodic_reconciliation(app: FastAPI) -> None:
             logger.exception("Geplante Reconciliation fehlgeschlagen; nächster Lauf versucht es erneut.")
 
 
+async def _periodic_dashboard_cache_refresh(app: FastAPI) -> None:
+    await asyncio.sleep(2)
+    while True:
+        await _refresh_dashboard_cache(app, trigger="scheduled")
+        await asyncio.sleep(app.state.settings.dashboard_cache_refresh_seconds)
+
+
+async def _refresh_dashboard_cache(app: FastAPI, *, trigger: str) -> None:
+    ha_reader = getattr(app.state, "ha_reader", None)
+    cache = getattr(app.state, "dashboard_cache", None)
+    if not isinstance(ha_reader, HaReader) or not isinstance(cache, DashboardCache):
+        return
+    try:
+        entities = await asyncio.to_thread(ha_reader.read_entities)
+        groups = _discovery_group_payload(list(entities))
+        await asyncio.to_thread(
+            cache.save_entities_payload,
+            entities=list(entities),
+            discovery_groups=groups,
+        )
+        logger.info("Dashboard-Cache aktualisiert (%s): %d Entities", trigger, len(entities))
+    except Exception as exc:
+        logger.warning("Dashboard-Cache konnte nicht aktualisiert werden (%s): %s", trigger, exc)
+
+
+def _discovery_group_payload(entities: list[HaEntitySummary]) -> list[dict[str, object]]:
+    group_counts: dict[tuple[str, str], int] = {}
+    for entity in discover_entities(entities):
+        key = (entity.category, entity.role.value)
+        group_counts[key] = group_counts.get(key, 0) + 1
+    return [
+        {"category": category, "role": role, "count": count}
+        for (category, role), count in sorted(group_counts.items())
+    ]
+
+
 async def _startup_reconciliation(app: FastAPI) -> None:
     delay_seconds = 5
     while True: