Restructure payment model

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

registration/models.py

@@ -364,27 +364,28 @@ class StudentRegistration(ParticipantRegistration):
                 })
 
         if self.team and self.team.participation.valid:
-            if self.payment.valid is False:
-                text = _("You have to pay {amount} € for your registration, or send a scholarship "
-                         "notification or a payment proof. "
-                         "You can do it on <a href=\"{url}\">the payment page</a>.")
-                url = reverse_lazy("registration:update_payment", args=(self.payment.id,))
-                content = format_lazy(text, amount=self.team.participation.tournament.price, url=url)
-                informations.append({
-                    'title': _("Payment"),
-                    'type': "danger",
-                    'priority': 3,
-                    'content': content,
-                })
-            elif self.payment.valid is None:
-                text = _("Your payment is under approval.")
-                content = text
-                informations.append({
-                    'title': _("Payment"),
-                    'type': "warning",
-                    'priority': 3,
-                    'content': content,
-                })
+            for payment in self.payments.all():
+                if payment.valid is False:
+                    text = _("You have to pay {amount} € for your registration, or send a scholarship "
+                             "notification or a payment proof. "
+                             "You can do it on <a href=\"{url}\">the payment page</a>.")
+                    url = reverse_lazy("registration:update_payment", args=(payment.id,))
+                    content = format_lazy(text, amount=payment.amount, url=url)
+                    informations.append({
+                        'title': _("Payment"),
+                        'type': "danger",
+                        'priority': 3,
+                        'content': content,
+                    })
+                elif self.payment.valid is None:
+                    text = _("Your payment is under approval.")
+                    content = text
+                    informations.append({
+                        'title': _("Payment"),
+                        'type': "warning",
+                        'priority': 3,
+                        'content': content,
+                    })
 
         return informations
 
@@ -496,11 +497,28 @@ def get_scholarship_filename(instance, filename):
 
 
 class Payment(models.Model):
-    registration = models.OneToOneField(
+    registrations = models.ManyToManyField(
         ParticipantRegistration,
-        on_delete=models.CASCADE,
-        related_name="payment",
-        verbose_name=_("registration"),
+        related_name="payments",
+        verbose_name=_("registrations"),
+    )
+
+    grouped = models.BooleanField(
+        verbose_name=_("grouped"),
+        default=False,
+        help_text=_("If set to true, then one payment is made for the full team, "
+                    "for example if the school pays for all."),
+    )
+
+    amount = models.PositiveSmallIntegerField(
+        verbose_name=_("total amount"),
+        help_text=_("Corresponds to the total required amount to pay, in euros."),
+        default=0,
+    )
+
+    final = models.BooleanField(
+        verbose_name=_("for final tournament"),
+        default=False,
     )
 
     type = models.CharField(
@@ -518,9 +536,16 @@ class Payment(models.Model):
         default="",
     )
 
-    scholarship_file = models.FileField(
-        verbose_name=_("scholarship file"),
-        help_text=_("only if you have a scholarship."),
+    checkout_intent_id = models.IntegerField(
+        verbose_name=_("Hello Asso checkout intent ID"),
+        blank=True,
+        null=True,
+        default=None,
+    )
+
+    receipt = models.FileField(
+        verbose_name=_("receipt"),
+        help_text=_("only if you have a scholarship or if you chose a bank transfer."),
         upload_to=get_scholarship_filename,
         blank=True,
         default="",
@@ -540,10 +565,10 @@ class Payment(models.Model):
     )
 
     def get_absolute_url(self):
-        return reverse_lazy("registration:user_detail", args=(self.registration.user.id,))
+        return reverse_lazy("registration:update_payment", args=(self.pk,))
 
     def __str__(self):
-        return _("Payment of {registration}").format(registration=self.registration)
+        return _("Payment of {registrations}").format(registrations=", ".join(map(str, self.registrations.all())))
 
     class Meta:
         verbose_name = _("payment")