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

server/backend/services/uplink_service.py

@@ -0,0 +1,18 @@
+import logging
+from ports import DeviceRepository, ReadingRepository
+from domain.entities import UplinkEvent
+
+log = logging.getLogger(__name__)
+
+class UplinkService:
+    def __init__(self, devices: DeviceRepository, readings: ReadingRepository):
+        self._devices  = devices
+        self._readings = readings
+
+    def handle(self, event: UplinkEvent) -> None:
+        device_id = self._devices.get_or_create_device_id(event.dev_eui)
+        self._readings.insert_reading(device_id, event.pulse_count)
+        log.info(
+            "[UP] dev_eui=%s | device_id=%s | pulses=%d",
+            event.dev_eui, device_id, event.pulse_count
+        )