feat(ml,backend): implemente le service de scoring et GET /predictions (#37)

apps/backend/app/api/deps.py

@@ -27,6 +27,7 @@ from app.repositories.audit_log import AuditLogRepository
 from app.repositories.login_attempt import LoginAttemptRepository
 from app.repositories.password_reset_attempt import PasswordResetAttemptRepository
 from app.repositories.password_reset_token import PasswordResetTokenRepository
+from app.repositories.prediction import PredictionRepository
 from app.repositories.reading import ReadingRepository
 from app.repositories.recommendation import RecommendationRepository
 from app.repositories.refresh_token import RefreshTokenRepository
@@ -34,6 +35,7 @@ from app.repositories.site import SiteRepository
 from app.repositories.user import UserRepository
 from app.services.alert import AlertService
 from app.services.auth import AuthService, LoginPolicy, PasswordResetPolicy
+from app.services.prediction import PredictionService
 from app.services.reading import ReadingService
 from app.services.recommendation import RecommendationService
 from app.services.sensor import SensorService
@@ -212,6 +214,15 @@ def get_sensor_service(session: SessionDep) -> SensorService:
 SensorServiceDep = Annotated[SensorService, Depends(get_sensor_service)]
 
 
+def get_prediction_service(session: SessionDep) -> PredictionService:
+    return PredictionService(
+        sites=SiteRepository(session), predictions=PredictionRepository(session)
+    )
+
+
+PredictionServiceDep = Annotated[PredictionService, Depends(get_prediction_service)]
+
+
 async def get_current_principal(
     credentials: CredentialsDep,
     session: SessionDep,

apps/backend/app/api/openapi.py

@@ -83,6 +83,13 @@ TAGS: Final[list[dict[str, Any]]] = [
         "name": "sensors",
         "description": "État de santé des capteurs par site. Réservé au rôle `admin`.",
     },
+    {
+        "name": "predictions",
+        "description": (
+            "Dernière prévision de consommation par site, calculée hors ligne par le pipeline "
+            "de scoring (`ml/`) et simplement lue ici. Accessible à partir du rôle `lecteur`."
+        ),
+    },
 ]
 
 cookie_de_rafraichissement = APIKeyCookie(

apps/backend/app/api/v1/endpoints/predictions.py

@@ -0,0 +1,18 @@
+from fastapi import APIRouter
+
+from app.api.deps import LecteurDep, PredictionServiceDep
+from app.schemas.prediction import PredictionSummaryResponse
+
+router = APIRouter()
+
+
+@router.get(
+    "",
+    response_model=PredictionSummaryResponse,
+    summary="Dernière prédiction de consommation par site",
+)
+async def get_predictions(
+    _: LecteurDep, service: PredictionServiceDep
+) -> PredictionSummaryResponse:
+    resume = await service.summary()
+    return PredictionSummaryResponse.model_validate(resume)

apps/backend/app/api/v1/router.py

@@ -5,6 +5,7 @@ from app.api.v1.endpoints import (
     alerts,
     auth,
     health,
+    predictions,
     readings,
     recommendations,
     sensors,
@@ -34,3 +35,6 @@ api_router.include_router(
 api_router.include_router(
     sensors.router, prefix="/sensors", tags=["sensors"], responses=REPONSES_ADMIN
 )
+api_router.include_router(
+    predictions.router, prefix="/predictions", tags=["predictions"], responses=REPONSES_LECTEUR
+)