review duplicates upon delete workout

rowers/models.py

@@ -2182,7 +2182,42 @@ def auto_delete_file_on_delete(sender, instance, **kwargs):
     if instance.csvfilename+'.gz':
 	if os.path.isfile(instance.csvfilename+'.gz'):
 	    os.remove(instance.csvfilename+'.gz')
-            
+
+@receiver(models.signals.post_delete,sender=Workout)
+def update_duplicates_on_delete(sender, instance, **kwargs):
+    if instance.id:
+
+        duplicates = Workout.objects.filter(
+            user=instance.user,date=instance.date,
+            duplicate=True)
+
+        for d in duplicates:
+            t = d.duration
+            delta = datetime.timedelta(hours=t.hour, minutes=t.minute, seconds=t.second)
+            workoutenddatetime = d.startdatetime+delta
+            ws = Workout.objects.filter(
+                user=d.user,date=d.date,
+            ).exclude(
+                pk__in=[instance.pk,d.pk]
+            ).exclude(
+                startdatetime__gt=workoutenddatetime
+                )
+
+
+            ws2 = []
+
+            for ww in ws:
+                t = ww.duration
+                delta = datetime.timedelta(hours=t.hour, minutes=t.minute, seconds=t.second)
+                enddatetime = ww.startdatetime+delta
+                if enddatetime > d.startdatetime:
+                    ws2.append(ww)
+
+            if len(ws2) == 0:
+                d.duplicate=False
+                d.save()
+        
+    
 # Delete stroke data from the database when a workout is deleted
 @receiver(models.signals.post_delete,sender=Workout)
 def auto_delete_strokedata_on_delete(sender, instance, **kwargs):