Update changelog for 1.94 release

[loctrkd.git] / loctrkd / opencellid.py

diff --git a/loctrkd/opencellid.py b/loctrkd/opencellid.py
index a70dc26b2ae39c7e8a2b36a28304fa4837a9aedf..e05648e2d50bcbfd48c671a57d507bf82acdc7ef 100644 (file)
--- a/loctrkd/opencellid.py
+++ b/loctrkd/opencellid.py
@@ -2,6 +2,7 @@
 Lookaside backend to query local opencellid database
 """
 
+from configparser import ConfigParser
 from sqlite3 import connect
 from typing import Any, Dict, List, Tuple
 
@@ -10,7 +11,7 @@ __all__ = "init", "lookup"
 ldb = None
 
 
-def init(conf: Dict[str, Any]) -> None:
+def init(conf: ConfigParser) -> None:
     global ldb
     ldb = connect(conf["opencellid"]["dbfn"])
 
@@ -22,7 +23,7 @@ def shut() -> None:
 
 def lookup(
     mcc: int, mnc: int, gsm_cells: List[Tuple[int, int, int]], __: Any
-) -> Tuple[float, float]:
+) -> Tuple[float, float, float]:
     assert ldb is not None
     lc = ldb.cursor()
     lc.execute("""attach database ":memory:" as mem""")
@@ -46,9 +47,9 @@ def lookup(
     lc.execute("""detach database mem""")
     lc.close()
     if not data:
-        return 0.0, 0.0
+        raise ValueError("No location data found in opencellid")
     sumsig = sum([1 / sig for _, _, sig in data])
     nsigs = [1 / sig / sumsig for _, _, sig in data]
     avlat = sum([lat * nsig for (lat, _, _), nsig in zip(data, nsigs)])
     avlon = sum([lon * nsig for (_, lon, _), nsig in zip(data, nsigs)])
-    return avlat, avlon
+    return avlat, avlon, 99.9  # TODO estimate accuracy for real