Move apps in main directory

Signed-off-by: Emmy D'Anello <emmy.danello@animath.fr>

registration/signals.py

@@ -0,0 +1,56 @@
+# Copyright (C) 2020 by Animath
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from django.contrib.auth.models import User
+from tfjm.lists import get_sympa_client
+
+from .models import Payment, Registration, VolunteerRegistration
+
+
+def set_username(instance, **_):
+    """
+    Ensure that the user username is always equal to the user email address.
+    """
+    instance.username = instance.email
+
+
+def send_email_link(instance, **_):
+    """
+    If the email address got changed, send a new validation link
+     and update the registration status in the team mailing list.
+    """
+    if instance.pk:
+        old_instance = User.objects.get(pk=instance.pk)
+        if old_instance.email != instance.email:
+            registration = Registration.objects.get(user=instance)
+            registration.email_confirmed = False
+            registration.save()
+            registration.user = instance
+            registration.send_email_validation_link()
+
+            if registration.participates and registration.team:
+                get_sympa_client().unsubscribe(old_instance.email, f"equipe-{registration.team.trigram.lower()}", False)
+                get_sympa_client().subscribe(instance.email, f"equipe-{registration.team.trigram.lower()}", False,
+                                             f"{instance.first_name} {instance.last_name}")
+
+
+def create_admin_registration(instance, **_):
+    """
+    When a super user got created through console,
+    ensure that an admin registration is created.
+    """
+    if instance.is_superuser:
+        VolunteerRegistration.objects.get_or_create(user=instance, admin=True)
+
+
+def create_payment(instance: Registration, **_):
+    """
+    When a user is saved, create the associated payment.
+    For a free tournament, the payment is valid.
+    """
+    if instance.participates:
+        payment = Payment.objects.get_or_create(registration=instance)[0]
+        if instance.team and instance.team.participation.valid and instance.team.participation.tournament.price == 0:
+            payment.valid = True
+            payment.type = "free"
+            payment.save()