Rebuild webpage if calendar json changes

1 files changed, 13 insertions, 3 deletions

diff --git a/scripts/get_calendar.py b/scripts/get_calendar.py
index 3e0f8e3..8a59c93 100644
--- a/scripts/get_calendar.py
+++ b/scripts/get_calendar.py
@@ -10,6 +10,7 @@ import os
 
 from dateutil.rrule import rrulestr
 import icalendar
+import subprocess
 
 def fetch_calendar(logger):
     """Fetches the calendar events and returns a icalendar.Calendar instance.
@@ -82,6 +83,15 @@ if __name__ == '__main__':
         event['end'] = event['end'].isoformat()
         events.append(event)
     destination = os.path.join(os.path.dirname(os.path.abspath(__file__)), '../template/calendar.json')
-    with open(destination + '.new', 'w') as dfile:
-        dfile.write(json.dumps(events, indent=4))
-    os.rename(destination + '.new', destination)
+    if os.path.exists(destination):
+        with open(destination, 'r') as dfile:
+            current = dfile.read()
+    else:
+        current = None
+    output = json.dumps(events, indent=4)
+
+    if current != output:
+        with open(destination + '.new', 'w') as dfile:
+            dfile.write(output)
+        os.rename(destination + '.new', destination)
+        subprocess.call(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'template.py'))