Fix Overlapping invoices.

cotisations/models.py

@@ -292,15 +292,40 @@ class Facture(BaseInvoice):
         return bool(self.get_subscription())
 
     def reorder_purchases(self):
-        date = self.date
+        date_adh = max(self.date, self.user.end_adhesion())
+        date_con = max(self.date, self.user.end_connexion())
         for purchase in self.vente_set.all():
             if hasattr(purchase, "cotisation"):
                 cotisation = purchase.cotisation
-                cotisation.date_start = date
-                date += relativedelta(
-                    months=(purchase.duration or 0) * purchase.number,
-                    days=(purchase.duration_days or 0) * purchase.number,
-                )
+                if cotisation.type_cotisation == 'Connexion':
+                    cotisation.date_start = date_con
+                    date_con += relativedelta(
+                        months=(purchase.duration or 0) * purchase.number,
+                        days=(purchase.duration_days or 0) * purchase.number,
+                    )
+                    cotisation.date_end = date_con
+                elif cotisation.type_cotisation == 'Adhesion':
+                    cotisation.date_start = date_adh
+                    date_adh += relativedelta(
+                        months=(purchase.duration or 0) * purchase.number,
+                        days=(purchase.duration_days or 0) * purchase.number,
+                    )
+                    cotisation.date_end = date_adh
+                else: # it is assumed that adhesion is required for a connexion
+                    date = min(date_adh, date_con)
+                    cotisation.date_start = date
+                    date_adh += relativedelta(
+                        months=(purchase.duration or 0) * purchase.number,
+                        days=(purchase.duration_days or 0) * purchase.number,
+                    )
+                    date_con += relativedelta(
+                        months=(purchase.duration or 0) * purchase.number,
+                        days=(purchase.duration_days or 0) * purchase.number,
+                    )
+                    date = max(date_adh, date_con)
+                    cotisation.date_end = date
+                cotisation.save()
+                purchase.facture = self
                 purchase.save()
 
     def save(self, *args, **kwargs):
@@ -486,11 +511,9 @@ class Vente(RevMixin, AclMixin, models.Model):
             )
         return
 
-    def create_cotis(self, date_start=False):
+    def create_cotis(self):
         """
-        Update and create a 'cotisation' related object if there is a
-        cotisation_type defined (which means the article sold represents
-        a cotisation)
+        Creates a cotisation without initializing the dates (start and end ar set to self.facture.facture.date) and without saving it. You should use Facture.reorder_purchases to set the right dates.
         """
         try:
             invoice = self.facture.facture
@@ -499,34 +522,8 @@ class Vente(RevMixin, AclMixin, models.Model):
         if not hasattr(self, "cotisation") and self.type_cotisation:
             cotisation = Cotisation(vente=self)
             cotisation.type_cotisation = self.type_cotisation
-            if date_start:
-                end_cotisation = (
-                    Cotisation.objects.filter(
-                        vente__in=Vente.objects.filter(
-                            facture__in=Facture.objects.filter(
-                                user=invoice.user
-                            ).exclude(valid=False)
-                        )
-                    )
-                    .filter(
-                        Q(type_cotisation="All")
-                        | Q(type_cotisation=self.type_cotisation)
-                    )
-                    .filter(date_start__lt=date_start)
-                    .aggregate(Max("date_end"))["date_end__max"]
-                )
-            elif self.type_cotisation == "Adhesion":
-                end_cotisation = invoice.user.end_adhesion()
-            else:
-                end_cotisation = invoice.user.end_connexion()
-            date_start = date_start or timezone.now()
-            end_cotisation = end_cotisation or date_start
-            date_max = max(end_cotisation, date_start)
-            cotisation.date_start = date_max
-            cotisation.date_end = cotisation.date_start + relativedelta(
-                months=(self.duration or 0) * self.number,
-                days=(self.duration_days or 0) * self.number,
-            )
+            cotisation.date_start = invoice.date
+            cotisation.date_end = invoice.date
 
     def save(self, *args, **kwargs):
         """

cotisations/test_models.py

@@ -10,7 +10,7 @@ from .models import Vente, Facture, Cotisation, Paiement
 
 class VenteModelTests(TestCase):
     def setUp(self):
-        self.user = User.objects.create(pseudo="testUser", email="test@example.org")
+        self.user = User.objects.create(pseudo="testUserPlop", email="test@example.org")
         self.paiement = Paiement.objects.create(moyen="test payment")
         self.f = Facture.objects.create(
             user=self.user, paiement=self.paiement, valid=True
@@ -30,6 +30,7 @@ class VenteModelTests(TestCase):
             type_cotisation="All",
             prix=0,
         )
+        self.f.reorder_purchases()
         self.assertAlmostEqual(
             self.user.end_connexion() - date,
             datetime.timedelta(days=1),
@@ -41,7 +42,7 @@ class VenteModelTests(TestCase):
         It should be possible to have one day membership.
         """
         date = timezone.now()
-        purchase = Vente.objects.create(
+        Vente.objects.create(
             facture=self.f,
             number=1,
             name="Test purchase",
@@ -50,16 +51,19 @@ class VenteModelTests(TestCase):
             type_cotisation="All",
             prix=0,
         )
-        delta = relativedelta(self.user.end_connexion(), date)
-        delta.microseconds = 0
-        self.assertEqual(delta, relativedelta(months=1))
+        self.f.reorder_purchases()
+        end = self.user.end_connexion()
+        expected_end = date + relativedelta(months=1)
+        self.assertEqual(end.day, expected_end.day)
+        self.assertEqual(end.month, expected_end.month)
+        self.assertEqual(end.year, expected_end.year)
 
     def test_one_month_and_one_week_cotisation(self):
         """
         It should be possible to have one day membership.
         """
         date = timezone.now()
-        purchase = Vente.objects.create(
+        Vente.objects.create(
             facture=self.f,
             number=1,
             name="Test purchase",
@@ -68,11 +72,64 @@ class VenteModelTests(TestCase):
             type_cotisation="All",
             prix=0,
         )
-        delta = relativedelta(self.user.end_connexion(), date)
-        delta.microseconds = 0
-        self.assertEqual(delta, relativedelta(months=1, days=7))
+        self.f.reorder_purchases()
+        end = self.user.end_connexion()
+        expected_end = date + relativedelta(months=1, days=7)
+        self.assertEqual(end.day, expected_end.day)
+        self.assertEqual(end.month, expected_end.month)
+        self.assertEqual(end.year, expected_end.year)
 
     def tearDown(self):
         self.f.delete()
         self.user.delete()
         self.paiement.delete()
+
+
+class FactureModelTests(TestCase):
+    def setUp(self):
+        self.user = User.objects.create(pseudo="testUserPlop", email="test@example.org")
+        self.paiement = Paiement.objects.create(moyen="test payment")
+    def tearDown(self):
+        self.user.delete()
+        self.paiement.delete()
+    def test_cotisations_prolongation(self):
+        """When user already have one valid cotisation, the new one should be
+        added at the end of the existing one."""
+        date = timezone.now()
+        invoice1 = Facture.objects.create(
+            user=self.user, paiement=self.paiement, valid=True
+        )
+        Vente.objects.create(
+            facture=invoice1,
+            number=1,
+            name="Test purchase",
+            duration=1,
+            duration_days=0,
+            type_cotisation="All",
+            prix=0,
+        )
+        invoice1.reorder_purchases()
+        invoice2 = Facture.objects.create(
+            user=self.user, paiement=self.paiement, valid=True
+        )
+        Vente.objects.create(
+            facture=invoice2,
+            number=1,
+            name="Test purchase",
+            duration=1,
+            duration_days=0,
+            type_cotisation="All",
+            prix=0,
+        )
+        invoice1.reorder_purchases()
+        delta = relativedelta(self.user.end_connexion(), date)
+        delta.microseconds = 0
+        try:
+            self.assertEqual(delta, relativedelta(months=2))
+        except Exception as e:
+            invoice1.delete()
+            invoice2.delete()
+            raise e
+        invoice1.delete()
+        invoice2.delete()
+

cotisations/views.py

@@ -144,6 +144,8 @@ def new_facture(request, user, userid):
                 price_ok = True
             if price_ok:
                 new_invoice_instance.save()
+                # Saving purchases so the invoice can find them. Invoice
+                # will modify them after being validated to put the right dates.
                 for p in purchases:
                     p.facture = new_invoice_instance
                     p.save()