add field Product.clic_limit

counter/migrations/0040_product_clic_limit.py

@@ -1,6 +1,6 @@
 # Generated by Django 5.2.13 on 2026-05-13 11:31
 
-from django.db import migrations
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
@@ -8,4 +8,17 @@ class Migration(migrations.Migration):
 
     operations = [
         migrations.RemoveField(model_name="product", name="buying_groups"),
+        migrations.AddField(
+            model_name="product",
+            name="clic_limit",
+            field=models.PositiveSmallIntegerField(
+                blank=True,
+                help_text=(
+                    "If a limit is set, the product won't be purchasable "
+                    "anymore once the latter is reached."
+                ),
+                null=True,
+                verbose_name="clic limit",
+            ),
+        ),
     ]

counter/models.py

@@ -34,6 +34,7 @@ from django.forms import ValidationError
 from django.urls import reverse
 from django.utils import timezone
 from django.utils.functional import cached_property
+from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _
 from django_celery_beat.models import PeriodicTask
 from django_countries.fields import CountryField
@@ -353,6 +354,38 @@ class ProductType(OrderedModel):
         return user.is_in_group(pk=settings.SITH_GROUP_ACCOUNTING_ADMIN_ID)
 
 
+class ProductQuerySet(models.QuerySet):
+    def under_clic_limit(self) -> Self:
+        """Filter product which clic limit isn't reached yet.
+
+        The clic limit is reached when the amount of sales
+        and of items in a basket for less than 15 minutes
+        is greater or equal than `Product.clic_limit`.
+        """
+        # import here to avoid circular import
+        from eboutic.models import BasketItem
+
+        nb_click_subquery = Subquery(
+            Selling.objects.filter(product_id=OuterRef("id"))
+            .values("product_id")
+            .annotate(res=Sum("quantity", default=0))
+            .values("res")[:1]
+        )
+        nb_basket_items_subquery = Subquery(
+            BasketItem.objects.filter(
+                product_id=OuterRef("id"),
+                basket__date__gt=now() - settings.SITH_EBOUTIC_BASKET_TIMEOUT,
+            )
+            .values("product_id")
+            .annotate(res=Sum("quantity"))
+            .values("res")[:1]
+        )
+        return self.annotate(
+            clicked=Coalesce(nb_click_subquery, 0),
+            reserved=Coalesce(nb_basket_items_subquery, 0),
+        ).filter(Q(clic_limit=None) | Q(clic_limit__gt=(F("clicked") + F("reserved"))))
+
+
 class Product(models.Model):
     """A product, with all its related information."""
 
@@ -370,8 +403,7 @@ class Product(models.Model):
     )
     code = models.CharField(_("code"), max_length=16, blank=True)
     purchase_price = CurrencyField(
-        _("purchase price"),
-        help_text=_("Initial cost of purchasing the product"),
+        _("purchase price"), help_text=_("Initial cost of purchasing the product")
     )
     icon = ResizedImageField(
         height=70,
@@ -388,10 +420,21 @@ class Product(models.Model):
     tray = models.BooleanField(
         _("tray price"), help_text=_("Buy five, get the sixth free"), default=False
     )
+    clic_limit = models.PositiveSmallIntegerField(
+        _("clic limit"),
+        help_text=_(
+            "If a limit is set, the product won't be purchasable "
+            "anymore on the eboutic once the latter is reached."
+        ),
+        null=True,
+        blank=True,
+    )
     archived = models.BooleanField(_("archived"), default=False)
     created_at = models.DateTimeField(_("created at"), auto_now_add=True)
     updated_at = models.DateTimeField(_("updated at"), auto_now=True)
 
+    objects = ProductQuerySet.as_manager()
+
     class Meta:
         verbose_name = _("product")
 

counter/tests/test_product.py

@@ -1,3 +1,5 @@
+import itertools
+from datetime import timedelta
 from io import BytesIO
 from typing import Callable
 from uuid import uuid4
@@ -8,6 +10,7 @@ from django.core.cache import cache
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.test import Client, TestCase
 from django.urls import reverse
+from django.utils.timezone import now
 from model_bakery import baker
 from model_bakery.recipe import Recipe
 from PIL import Image
@@ -16,9 +19,10 @@ from pytest_django.asserts import assertNumQueries, assertRedirects
 from club.models import Club
 from core.baker_recipes import board_user, subscriber_user
 from core.models import Group, User
-from counter.baker_recipes import product_recipe
+from counter.baker_recipes import product_recipe, sale_recipe
 from counter.forms import ProductForm, ProductPriceFormSet
-from counter.models import Price, Product, ProductType
+from counter.models import Price, Product, ProductType, Selling
+from eboutic.models import Basket, BasketItem
 
 
 @pytest.mark.django_db
@@ -222,3 +226,57 @@ def test_price_for_user():
     assert list(qs.for_user(users[0])) == [prices[0], prices[1], prices[4]]
     assert list(qs.for_user(users[1])) == [prices[0], prices[4]]
     assert list(qs.for_user(users[2])) == [prices[0], prices[3]]
+
+
+class TestProductClicLimit(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.products = product_recipe.make(
+            clic_limit=itertools.chain([5, 10, 15], itertools.repeat(None)),
+            _quantity=6,
+            _bulk_create=True,
+        )
+        cls.qs = Product.objects.filter(id__in=[p.id for p in cls.products])
+
+    def test_no_sales_or_basket(self):
+        """Test that it works if no sales has been made yet"""
+        assert list(self.qs.under_clic_limit()) == self.products
+
+    def test_with_sales(self):
+        """Test that it works when there are existing sales"""
+        sales = sale_recipe.make(
+            product=itertools.cycle(self.products),
+            _quantity=len(self.products) * 5,
+            _bulk_create=True,
+        )
+        Selling.objects.filter(id__in=[s.id for s in sales]).update(quantity=2)
+        assert list(self.qs.under_clic_limit()) == self.products[2:]
+
+    def test_with_sales_and_basket(self):
+        """Test that it works when there are existing sales and basket items."""
+        sales = sale_recipe.make(
+            product=itertools.cycle(self.products),
+            _quantity=len(self.products) * 5,
+            _bulk_create=True,
+        )
+        Selling.objects.filter(id__in=[s.id for s in sales]).update(quantity=1)
+        basket = baker.make(
+            Basket, date=now() - settings.SITH_EBOUTIC_BASKET_TIMEOUT / 2
+        )
+        items = baker.make(
+            BasketItem,
+            product=itertools.cycle(self.products),
+            basket=basket,
+            _quantity=len(self.products) * 5,
+        )
+        BasketItem.objects.filter(id__in=[i.id for i in items]).update(quantity=1)
+        assert list(self.qs.under_clic_limit()) == self.products[2:]
+
+        # expired basket items shouldn't be accounted when computing clic limit
+        item = BasketItem.objects.filter(product=self.products[1])[0]
+        item.basket = baker.make(
+            Basket,
+            date=now() - settings.SITH_EBOUTIC_BASKET_TIMEOUT - timedelta(minutes=1),
+        )
+        item.save()
+        assert list(self.qs.under_clic_limit()) == self.products[1:]