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

server/backend/dependencies.py

@@ -0,0 +1,34 @@
+import os
+
+from adapters.postgres import PgDeviceRepository, PgReadingRepository, PgReadingQueryRepository
+from adapters.mqtt import PahoMqttBroker
+from services.uplink_service import UplinkService
+from services.consumption_service import ConsumptionService
+
+MQTT_HOST = os.getenv("MQTT_HOST", "mosquitto")
+MQTT_PORT = int(os.getenv("MQTT_PORT", 1883))
+MQTT_TOPIC = os.getenv("MQTT_TOPIC", "application/+/device/+/event/up")
+
+
+## Repositories
+def get_device_repo() -> PgDeviceRepository:
+    return PgDeviceRepository()
+
+def get_reading_repo() -> PgReadingRepository:
+    return PgReadingRepository()
+
+def get_query_repo() -> PgReadingQueryRepository:
+    return PgReadingQueryRepository()
+
+
+## Services
+def get_uplink_service() -> UplinkService:
+    return UplinkService(get_device_repo(), get_reading_repo())
+
+def get_consumption_service() -> ConsumptionService:
+    return ConsumptionService(get_query_repo())
+
+
+## Adapters
+def get_mqtt_broker() -> PahoMqttBroker:
+    return PahoMqttBroker(MQTT_HOST, MQTT_PORT, MQTT_TOPIC)