rename gps303 -> loctrkd

[loctrkd.git] / gps303 / opencellid.py

diff --git a/gps303/opencellid.py b/gps303/opencellid.py
deleted file mode 100644 (file)
index 583d2e1..0000000
--- a/gps303/opencellid.py
+++ /dev/null
@@ -1,77 +0,0 @@
-"""
-Lookaside backend to query local opencellid database
-"""
-
-from sqlite3 import connect
-from typing import Any, Dict, List, Tuple
-
-__all__ = "init", "lookup"
-
-ldb = None
-
-
-def init(conf: Dict[str, Any]) -> None:
-    global ldb
-    ldb = connect(conf["opencellid"]["dbfn"])
-
-
-def shut() -> None:
-    if ldb is not None:
-        ldb.close()
-
-
-def lookup(
-    mcc: int, mnc: int, gsm_cells: List[Tuple[int, int, int]], __: Any
-) -> Tuple[float, float]:
-    assert ldb is not None
-    lc = ldb.cursor()
-    lc.execute("""attach database ":memory:" as mem""")
-    lc.execute("create table mem.seen (locac int, cellid int, signal int)")
-    lc.executemany(
-        """insert into mem.seen (locac, cellid, signal)
-                        values (?, ?, ?)""",
-        gsm_cells,
-    )
-    ldb.commit()
-    lc.execute(
-        """select c.lat, c.lon, s.signal
-                  from main.cells c, mem.seen s
-                  where c.mcc = ?
-                  and c.area = s.locac
-                  and c.cell = s.cellid""",
-        (mcc,),
-    )
-    data = list(lc.fetchall())
-    if not data:
-        return 0.0, 0.0
-    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)])
-    # lc.execute("drop table mem.seen")
-    lc.execute("""detach database mem""")
-    lc.close()
-    return avlat, avlon
-
-
-if __name__.endswith("__main__"):
-    from datetime import datetime, timezone
-    import sys
-    from .zx303proto import *
-
-    db = connect(sys.argv[1])
-    c = db.cursor()
-    c.execute(
-        """select tstamp, packet from events
-            where proto in (?, ?)""",
-        (proto_name(WIFI_POSITIONING), proto_name(WIFI_OFFLINE_POSITIONING)),
-    )
-    init({"opencellid": {"dbfn": sys.argv[2]}})
-    for timestamp, packet in c:
-        obj = parse_message(packet)
-        avlat, avlon = lookup(obj.mcc, obj.mnc, obj.gsm_cells, obj.wifi_aps)
-        print(
-            "{} {:+#010.8g},{:+#010.8g}".format(
-                datetime.fromtimestamp(timestamp), avlat, avlon
-            )
-        )