From 8018706715c5d438b77cca36caf036c9abf9ad7d Mon Sep 17 00:00:00 2001
From: Sebastian Lohff <seba@someserver.de>
Date: Sat, 28 Jan 2017 17:06:05 +0100
Subject: [PATCH] Check for shadowcalls on user registration, copy data if
 necessary

---
 contest/models.py  |  4 +++-
 contest/signals.py | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 contest/signals.py

diff --git a/contest/models.py b/contest/models.py
index a279d9d..fcc4e1d 100644
--- a/contest/models.py
+++ b/contest/models.py
@@ -5,9 +5,10 @@ import datetime
 from django.db import models
 from django.contrib.auth.models import AbstractUser
 from django.core.validators import RegexValidator
-from django.db.models import Q
+from django.db.models import Q, signals
 
 from .validators import CallUsernameValidator
+from .signals import checkForShadowCall
 
 class Contest(models.Model):
 	name = models.CharField(max_length=20)
@@ -63,6 +64,7 @@ class User(AbstractUser):
 
 	def getCfmdRefCount(self):
 		return len(set(map(lambda _x: _x["refStr"], self.qso_set.filter(ref__isnull=False).values("ref", "refStr"))))
+signals.post_save.connect(checkForShadowCall, sender=User)
 
 class Band(models.Model):
 	name = models.CharField(max_length=10)
diff --git a/contest/signals.py b/contest/signals.py
new file mode 100644
index 0000000..2de050a
--- /dev/null
+++ b/contest/signals.py
@@ -0,0 +1,18 @@
+
+def checkForShadowCall(sender, instance, created, raw, **kwargs):
+	""" Check for existing shadow call. If present copy it's data and delete it. """
+	if created:
+		# to prevent circular imports we import ShadowCall here
+		from .models import ShadowCall
+
+		try:
+			shadow = ShadowCall.objects.get(username=instance.username)
+			instance.ref = shadow.ref
+			instance.location = shadow.location
+			instance.opName = shadow.opName
+			instance.regTime = shadow.regTime
+
+			instance.save()
+			shadow.delete()
+		except ShadowCall.DoesNotExist:
+			pass