first commit

api/app/services/link.py

@@ -0,0 +1,19 @@
+from app.core.geo import GeoPoint
+from app.core.propagation import manual_link_budget
+from app.models.link import LinkBudgetRequest, LinkBudgetResponse
+
+
+def link_budget(request: LinkBudgetRequest) -> LinkBudgetResponse:
+    if request.model != "manual":
+        raise NotImplementedError(f"{request.model} link model is implemented in a later stage")
+
+    budget = manual_link_budget(
+        tx=GeoPoint(lat=request.tx.lat, lon=request.tx.lon),
+        rx=GeoPoint(lat=request.rx.lat, lon=request.rx.lon),
+        tx_power_dbm=request.tx.power_dbm,
+        tx_gain_dbi=request.tx.gain_dbi,
+        rx_gain_dbi=request.rx.gain_dbi,
+        sensitivity_dbm=request.rx.sensitivity_dbm,
+        frequency_mhz=request.frequency_mhz,
+    )
+    return LinkBudgetResponse(**budget.__dict__)