Use a dataclass to represent conferences

Don't add conference location if location is in conference name

Closes: #77

agenda/conference.py

@@ -1,28 +1,57 @@
 """Conferences."""
 
+import dataclasses
+import decimal
+from datetime import date, datetime
+
 import yaml
 
 from .types import Event
 
 
+@dataclasses.dataclass
+class Conference:
+    """Conference."""
+
+    name: str
+    topic: str
+    location: str
+    start: date | datetime
+    end: date | datetime
+    venue: str | None = None
+    address: str | None = None
+    url: str | None = None
+    accommodation_booked: bool = False
+    transport_booked: bool = False
+    going: bool = False
+    registered: bool = False
+    speaking: bool = False
+    online: bool = False
+    price: decimal.Decimal | None = None
+    currency: str | None = None
+
+    @property
+    def display_name(self) -> str:
+        """Add location if not already in conference name."""
+        return (
+            self.name
+            if self.location in self.name
+            else f"{self.name} ({self.location})"
+        )
+
+
 def get_list(filepath: str) -> list[Event]:
     """Read conferences from a YAML file and return a list of Event objects."""
-    with open(filepath, "r") as f:
-        data = yaml.safe_load(f)
-
-    events = []
-    for conf in data.get("conferences", []):
-        start_date = conf["start"]
-        end_date = conf["end"]
-
-        # Skip the conference if it is before the input date.
-        event = Event(
+    return [
+        Event(
             name="conference",
-            date=start_date,
-            end_date=end_date,
-            title=f'🎤 {conf["name"]} ({conf["location"]})',
-            url=conf.get("url"),
+            date=conf.start,
+            end_date=conf.end,
+            title=f"🎤 {conf.display_name}",
+            url=conf.url,
         )
-        events.append(event)
-
-    return events
+        for conf in (
+            Conference(**conf)
+            for conf in yaml.safe_load(open(filepath, "r"))["conferences"]
+        )
+    ]