From bb8e5db3fb3a5e3a352105985a4121ee860cf763 Mon Sep 17 00:00:00 2001
From: Daniel Schadt <kingdread@gmx.de>
Date: Sun, 24 Jul 2022 22:25:40 +0200
Subject: make upload function even more robust

This now works if there is really no date given in the GPX file, as done
for example by the files produced by BRouter.
---
 fietsboek/util.py         | 41 +++++++++++++++++++++--------------------
 fietsboek/views/upload.py |  2 +-
 2 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/fietsboek/util.py b/fietsboek/util.py
index aff41fe..ddc4832 100644
--- a/fietsboek/util.py
+++ b/fietsboek/util.py
@@ -127,26 +127,27 @@ def guess_gpx_timezone(gpx):
 
     # Next, we look if there's a "localTime" extension on the track, so we can
     # compare the local time to the time.
-    for track in gpx.tracks:
-        time = times[0]
-        local_time = None
-        for extension in track.extensions:
-            if extension.tag.lower() == 'localtime':
-                local_time = datetime.datetime.fromisoformat(
-                    fix_iso_timestamp(extension.text)).replace(tzinfo=None)
-            elif extension.tag.lower() == 'time':
-                time = datetime.datetime.fromisoformat(
-                    fix_iso_timestamp(extension.text)).replace(tzinfo=None)
-        if time is not None and local_time is not None:
-            # We found a pair that we can use!
-            offset = local_time - time
-            # With all the time madness, luckily most time zones seem to stick
-            # to an offset that is a multiple of 15 minutes (see
-            # https://en.wikipedia.org/wiki/List_of_UTC_offsets). We try to
-            # round the value to the nearest of 15 minutes, to prevent any
-            # funky offsets from happening due to slight clock desyncs.
-            offset = round_timedelta_to_multiple(offset, datetime.timedelta(minutes=15))
-            return datetime.timezone(offset)
+    if times:
+        for track in gpx.tracks:
+            time = times[0]
+            local_time = None
+            for extension in track.extensions:
+                if extension.tag.lower() == 'localtime':
+                    local_time = datetime.datetime.fromisoformat(
+                        fix_iso_timestamp(extension.text)).replace(tzinfo=None)
+                elif extension.tag.lower() == 'time':
+                    time = datetime.datetime.fromisoformat(
+                        fix_iso_timestamp(extension.text)).replace(tzinfo=None)
+            if local_time is not None:
+                # We found a pair that we can use!
+                offset = local_time - time
+                # With all the time madness, luckily most time zones seem to stick
+                # to an offset that is a multiple of 15 minutes (see
+                # https://en.wikipedia.org/wiki/List_of_UTC_offsets). We try to
+                # round the value to the nearest of 15 minutes, to prevent any
+                # funky offsets from happening due to slight clock desyncs.
+                offset = round_timedelta_to_multiple(offset, datetime.timedelta(minutes=15))
+                return datetime.timezone(offset)
 
     # If all else fails, we assume that we are UTC+00:00
     return datetime.timezone.utc
diff --git a/fietsboek/views/upload.py b/fietsboek/views/upload.py
index 4f42b80..bbd8f68 100644
--- a/fietsboek/views/upload.py
+++ b/fietsboek/views/upload.py
@@ -104,7 +104,7 @@ def finish_upload(request):
     badges = [(False, badge) for badge in badges]
     gpx = gpxpy.parse(upload.gpx_data)
     timezone = util.guess_gpx_timezone(gpx)
-    date = gpx.time or gpx.get_time_bounds().start_time
+    date = gpx.time or gpx.get_time_bounds().start_time or datetime.datetime.now()
     date = date.astimezone(timezone)
     tz_offset = timezone.utcoffset(date)
     track_name = ""
-- 
cgit v1.2.3