Refactor looking up SIG reference details into a common location, taking it out of the individual spot providers. This means we can now look up references properly from Cluster spot comments, etc. Closes #74 as there is no longer any duplication of these lookups. Works towards #54 as sig_refs now specify their sig internally.

spotproviders/zlota.py

@@ -2,8 +2,6 @@ from datetime import datetime
 
 import pytz
 
-from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
-from core.constants import HTTP_HEADERS
 from core.sig_utils import get_icon_for_sig
 from data.sig_ref import SIGRef
 from data.spot import Spot
@@ -36,18 +34,8 @@ class ZLOTA(HTTPSpotProvider):
                         freq=freq_hz,
                         mode=source_spot["mode"].upper().strip(),
                         comment=source_spot["comments"],
-                        sig="ZLOTA",
-                        sig_refs=[SIGRef(id=source_spot["reference"], name=source_spot["name"])],
-                        icon=get_icon_for_sig("ZLOTA"),
+                        sig_refs=[SIGRef(id=source_spot["reference"], sig="ZLOTA", name=source_spot["name"])],
                         time=datetime.fromisoformat(source_spot["referenced_time"]).astimezone(pytz.UTC).timestamp())
 
-            # ZLOTA lat/lon lookup
-            zlota_data = SEMI_STATIC_URL_DATA_CACHE.get(self.LIST_URL, headers=HTTP_HEADERS).json()
-            for asset in zlota_data:
-                if asset["code"] == spot.sig_refs[0]:
-                    spot.dx_latitude = asset["y"]
-                    spot.dx_longitude = asset["x"]
-                    break
-
             new_spots.append(spot)
         return new_spots