Use flask config instead of configparser

Closes: #74

agenda/data.py

@@ -1,13 +1,13 @@
 """Agenda data."""
 
 import asyncio
-import configparser
 import os
 import typing
 from datetime import date, datetime, timedelta
 
 import dateutil.rrule
 import dateutil.tz
+import flask
 import holidays  # type: ignore
 import isodate  # type: ignore
 import lxml
@@ -185,23 +185,11 @@ def read_events_yaml(data_dir: str, start: date, end: date) -> list[Event]:
     return events
 
 
-def get_config() -> configparser.ConfigParser:
-    """Load config file."""
-    config_filename = os.path.join(os.path.dirname(__file__), "..", "config")
-
-    assert os.path.exists(config_filename)
-
-    config = configparser.ConfigParser()
-    config.read(config_filename)
-
-    return config
-
-
-async def get_data(now: datetime) -> typing.Mapping[str, str | object]:
+async def get_data(
+    now: datetime, config: flask.config.Config
+) -> typing.Mapping[str, str | object]:
     """Get data to display on agenda dashboard."""
-    config = get_config()
-
-    data_dir = config.get("data", "dir")
+    data_dir = config["DATA_DIR"]
 
     rocket_dir = os.path.join(data_dir, "thespacedevs")
     today = now.date()
@@ -237,7 +225,7 @@ async def get_data(now: datetime) -> typing.Mapping[str, str | object]:
         "gwr_advance_tickets": gwr_advance_tickets,
     }
 
-    my_data = config["data"]["personal-data"]
+    my_data = config["PERSONAL_DATA"]
     events = (
         [
             Event(name="mothers_day", date=uk_holiday.get_mothers_day(today)),
@@ -254,7 +242,7 @@ async def get_data(now: datetime) -> typing.Mapping[str, str | object]:
     events += combine_holidays(bank_holiday + get_us_holidays(last_year, next_year))
     events += birthday.get_birthdays(last_year, os.path.join(my_data, "entities.yaml"))
     events += accommodation.get_events(os.path.join(my_data, "accommodation.yaml"))
-    events += travel.all_events(config["data"]["personal-data"])
+    events += travel.all_events(my_data)
     events += conference.get_list(os.path.join(my_data, "conferences.yaml"))
     events += backwell_bins + bristol_bins
     events += read_events_yaml(my_data, last_year, next_year)

agenda/fx.py

@@ -1,19 +1,19 @@
 """Currency exchange rates."""
 
-import configparser
 import json
 import os
 import typing
 from datetime import datetime, timedelta
 from decimal import Decimal
 
+import flask
 import httpx
 
 
-async def get_gbpusd(config: configparser.ConfigParser) -> Decimal:
+async def get_gbpusd(config: flask.config.Config) -> Decimal:
     """Get the current value for GBPUSD, with caching."""
-    access_key = config.get("exchangerate", "access_key")
-    data_dir = config.get("data", "dir")
+    access_key = config["EXCHANGERATE_ACCESS_KEY"]
+    data_dir = config["DATA_DIR"]
 
     now = datetime.now()
     now_str = now.strftime("%Y-%m-%d_%H:%M")