Handle OSMCal events without locations

check.py

@@ -3,9 +3,11 @@
 
 import email.message
 import email.utils
+from urllib.parse import urlparse
 import smtplib
 import sys
 
+import typing
 import requests
 import simplejson.errors
 
@@ -15,7 +17,32 @@ SMTP_HOST = "4angle.com"
 
 URL = "https://osmcal.org/api/v2/events/?in=France"
 
-SEEN_EVENT_IDS = {4064}
+SEEN_EVENT_IDS = {4064, 4606, 4641}
+
+
+def get_event_id(event: dict[str, typing.Any]) -> int | None:
+    """Extract the numeric event ID from API data."""
+    if "id" in event:
+        return typing.cast(int, event["id"])
+
+    path_parts = [part for part in urlparse(event["url"]).path.split("/") if part]
+    if len(path_parts) >= 2 and path_parts[-2] == "event":
+        try:
+            return int(path_parts[-1])
+        except ValueError:
+            return None
+
+    return None
+
+
+def get_detailed_location(event: dict[str, typing.Any]) -> str:
+    """Return an event's detailed location, or an empty string if absent."""
+    location = event.get("location")
+    if not isinstance(location, dict):
+        return ""
+
+    detailed = location.get("detailed")
+    return detailed if isinstance(detailed, str) else ""
 
 
 def send_mail(subject: str, body: str) -> None:
@@ -44,16 +71,28 @@ def check_for_paris_events() -> None:
         print(r.text)
         raise
 
-    paris_events = [
+    all_paris_events = [
         event
         for event in events
-        if event["url"] != "https://osmcal.org/event/4064/"
-        and "paris" in event["location"]["detailed"].lower()
+        if "paris" in get_detailed_location(event).lower()
+    ]
+    seen_paris_events = [
+        event for event in all_paris_events if get_event_id(event) in SEEN_EVENT_IDS
+    ]
+    paris_events = [
+        event for event in all_paris_events if get_event_id(event) not in SEEN_EVENT_IDS
     ]
 
     if not paris_events:
         if sys.stdin.isatty():
-            print(f"{len(events)} events found, none in Paris.")
+            total_events = len(events)
+            seen_count = len(seen_paris_events)
+            paris_label = "Paris event" if seen_count == 1 else "Paris events"
+            print(
+                f"{total_events} events found in France; "
+                + f"{seen_count} {paris_label} already seen; "
+                + "no new Paris events."
+            )
         return
 
     subject = "Upcoming Paris OSM Hack Weekend Found!"
@@ -63,7 +102,7 @@ def check_for_paris_events() -> None:
         body += (
             f"{event['name']} - {event['url']}\n"
             + f"Date: {event['date']['human']}\n"
-            + f"Location: {event['location']['detailed']}\n\n"
+            + f"Location: {get_detailed_location(event)}\n\n"
         )
     send_mail(subject, body)