From 123803d61927723580abccb3d370bdbff76f2bc6 Mon Sep 17 00:00:00 2001
From: Stefan Bethke <stb@lassitu.de>
Date: Thu, 12 Jun 2025 21:15:10 +0200
Subject: [PATCH] Properly use date and timezones

---
 buba/animations/dbf.py | 30 +++++++++---------------------
 1 file changed, 9 insertions(+), 21 deletions(-)

diff --git a/buba/animations/dbf.py b/buba/animations/dbf.py
index 8db52d2..2ad4a0a 100644
--- a/buba/animations/dbf.py
+++ b/buba/animations/dbf.py
@@ -47,32 +47,20 @@ class DBFAnimation(BubaAnimation):
     def countdown(dt: datetime):
         now = datetime.datetime.now().astimezone()
         try:
-            dep_time = datetime.datetime.strptime(dt, "%H:%M").replace(tzinfo=now.tzinfo).time()
-        except TypeError as e:
+            day = now.strftime("%y-%m-%d")
+            departure = datetime.datetime.strptime(f"{day} {dt}", "%y-%m-%d %H:%M").astimezone()
+        except ValueError as e:
             return "--"
 
-        # First, assume all departure times are on the current day
-        dep_date = now.date()
-
-        # Calculate timedelta under the above assumption
-        dep_td = datetime.datetime.combine(dep_date, dep_time,tzinfo=now.tzinfo) - now
-
-        LOG.info(f"Processing time {datetime.datetime.combine(dep_date, dep_time, tzinfo=now.tzinfo)}, delta {dep_td}")
-
-        # If the calculated timedelta is more than one hour in the past,
-        # assume that the day should actually be the next day
-        # (This will be the case e.g. when a train departs at 00:15 and it's currently 23:50)
+        dep_td = departure - now
         if dep_td.total_seconds() <= -3600:
-            dep_date += datetime.timedelta(days=1)
-
-        # If the calculated timedelta is more than 23 hours in the future,
-        # assume that the day should actually be the previous day.
-        # (This will be the case e.g. when a train should have departed at 23:50 but it's already 00:15)
+            # dep_date += datetime.timedelta(days=1)
+            departure += datetime.timedelta(days=1)
         if dep_td.total_seconds() >= 3600 * 23:
-            dep_date -= datetime.timedelta(days=1)
+            # dep_date -= datetime.timedelta(days=1)
+            departure -= datetime.timedelta(days=1)
 
-        # Recalculate the timedelta
-        return BubaAnimation.countdown(datetime.datetime.combine(dep_date, dep_time))
+        return BubaAnimation.countdown(departure)
 
     @staticmethod
     def short_station(station: str) -> str: