refacto: rename app into backend, to prepare for frontend dev

server/backend/services/consumption_service.py

@@ -0,0 +1,31 @@
+from datetime import datetime
+
+from domain.entities.consumption_point import ConsumptionResponse
+from domain.exceptions import ValidationError
+from domain.value_objects import Granularity
+from ports import ReadingQueryRepository
+
+
+class ConsumptionService:
+    def __init__(self, repo: ReadingQueryRepository) -> None:
+        self._repo = repo
+
+    def get_consumption(
+        self,
+        dev_eui: str,
+        start: datetime,
+        end: datetime,
+        granularity: Granularity,
+    ) -> ConsumptionResponse:
+        if start > end:
+            raise ValidationError("'start' doit être inférieur ou égal à 'end'")
+
+        points = self._repo.get_consumption(dev_eui, start, end, granularity)
+
+        return ConsumptionResponse(
+            dev_eui=dev_eui,
+            start=start,
+            end=end,
+            granularity=granularity,
+            points=points,
+        )