Tidy code for conference list

Closes: #145

templates/accommodation.html

@@ -42,7 +42,9 @@
   </ul>
 
   <div class="grid-container">
-    {{ section("Accommodation", items) }}
+    {{ section("Past", past) }}
+    {{ section("Current", current) }}
+    {{ section("Future", future) }}
   </div>
 </div>
 

web_view.py

@@ -21,7 +21,7 @@ import agenda.error_mail
 import agenda.holidays
 import agenda.thespacedevs
 import agenda.trip
-from agenda import format_list_with_ampersand, travel
+from agenda import format_list_with_ampersand, travel, uk_tz
 from agenda.types import StrDict
 
 app = flask.Flask(__name__)
@@ -139,7 +139,7 @@ def conference_list() -> str:
     """Page showing a list of conferences."""
     data_dir = app.config["PERSONAL_DATA"]
     filepath = os.path.join(data_dir, "conferences.yaml")
-    item_list = yaml.safe_load(open(filepath))
+    items = yaml.safe_load(open(filepath))
     today = date.today()
 
     conference_trip_lookup = {}
@@ -148,7 +148,7 @@ def conference_list() -> str:
             key = (trip_conf["start"], trip_conf["name"])
             conference_trip_lookup[key] = trip
 
-    for conf in item_list:
+    for conf in items:
         conf["start_date"] = as_date(conf["start"])
         conf["end_date"] = as_date(conf["end"])
 
@@ -156,16 +156,15 @@ def conference_list() -> str:
         if this_trip := conference_trip_lookup.get(key):
             conf["linked_trip"] = this_trip
 
-    item_list.sort(key=operator.itemgetter("start_date"))
+    items.sort(key=operator.itemgetter("start_date"))
 
+    past = [conf for conf in items if conf["end_date"] < today]
     current = [
         conf
-        for conf in item_list
+        for conf in items
         if conf["start_date"] <= today and conf["end_date"] >= today
     ]
-
+    future = [conf for conf in items if conf["start_date"] > today]
-    past = [conf for conf in item_list if conf["end_date"] < today]
-    future = [conf for conf in item_list if conf["start_date"] > today]
 
     return flask.render_template(
         "conference_list.html",
@@ -206,9 +205,17 @@ def accommodation_list() -> str:
         if this_trip := trip_lookup.get(key):
             item["linked_trip"] = this_trip
 
+    now = uk_tz.localize(datetime.now())
+
+    past = [conf for conf in items if conf["to"] < now]
+    current = [conf for conf in items if conf["from"] <= now and conf["to"] >= now]
+    future = [conf for conf in items if conf["from"] > now]
+
     return flask.render_template(
         "accommodation.html",
-        items=items,
+        past=past,
+        current=current,
+        future=future,
         total_nights_2024=total_nights_2024,
         nights_abroad_2024=nights_abroad_2024,
         get_country=agenda.get_country,