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core/enums.py

@@ -30,7 +30,6 @@ class Mode(str, Enum):
     OLIVIA = "OLIVIA"
     PKT = "PKT"
     MSK144 = "MSK144"
-    UNKNOWN = "UNKNOWN"
 
     @property
     def is_cw(self) -> bool:
@@ -42,14 +41,14 @@ class Mode(str, Enum):
 
     @property
     def is_data(self) -> bool:
-        return not (self.is_cw or self.is_phone or self == Mode.UNKNOWN)
+        return not (self.is_cw or self.is_phone)
 
     @staticmethod
     def from_name(name):
         """Convert a string to an enum mode using the alias table."""
 
         if not name:
-            return Mode.UNKNOWN
+            return None
 
         try:
             return Mode(name.upper())
@@ -57,14 +56,13 @@ class Mode(str, Enum):
             try:
                 return Mode(MODE_ALIASES[name.upper()])
             except (KeyError, ValueError):
-                return Mode.UNKNOWN
+                return None
 
 
 class ModeType(str, Enum):
     PHONE = "PHONE"
     CW = "CW"
     DATA = "DATA"
-    UNKNOWN = "UNKNOWN"
 
 
 class ModeSource(str, Enum):
@@ -115,7 +113,14 @@ class SIGRefType(str, Enum):
     REGION = "REGION"
     GRID = "GRID"
     TOILET = "TOILET"
-    UNKNOWN = "UNKNOWN"
+
+
+class AlertType(str, Enum):
+    """Type of an alert."""
+
+    XOTA = "XOTA"
+    DXPEDITION = "DXPEDITION"
+    CONTEST = "CONTEST"
 
 
 class SIGType(str, Enum):

core/utils.py

@@ -20,11 +20,11 @@ def safe_json_dumps(obj):
     return simplejson.dumps(obj, ensure_ascii=False, ignore_nan=True, default=lambda o: o.__dict__)
 
 
-def infer_mode_from_comment(comment: str) -> Mode:
+def infer_mode_from_comment(comment: str) -> Mode | None:
     """Infer a mode from the comment"""
 
     if not comment:
-        return Mode.UNKNOWN
+        return None
 
     for mode in Mode:
         if re.search(r"(^|\W)" + mode + r"($|\W)", comment, re.IGNORECASE):
@@ -33,14 +33,14 @@ def infer_mode_from_comment(comment: str) -> Mode:
         if re.search(r"(^|\W)" + alias + r"($|\W)", comment, re.IGNORECASE):
             return Mode(MODE_ALIASES[alias])
 
-    return Mode.UNKNOWN
+    return None
 
 
-def infer_mode_type_from_mode(mode: str) -> ModeType:
+def infer_mode_type_from_mode(mode: str) -> ModeType | None:
     """Infer a "mode family" from a mode ."""
 
     if not mode:
-        return ModeType.UNKNOWN
+        return None
 
     if mode in MODE_ALIASES:
         mode = MODE_ALIASES[mode]
@@ -56,7 +56,7 @@ def infer_mode_type_from_mode(mode: str) -> ModeType:
     except ValueError:
         if mode.upper() != "OTHER" and mode != "?":
             logger.warning(f"Found an unrecognised mode: {mode}. Developer should categorise this.")
-        return ModeType.UNKNOWN
+        return None
 
 
 def infer_band_from_freq(freq):