Instroduce purchase.is_resale_price_fixed for products like crowfunding

repanier/models/invoice.py

@@ -237,7 +237,7 @@ class CustomerInvoice(models.Model):
 
         result_set = purchase.Purchase.objects.filter(
             permanence_id=self.permanence_id,
-            customer_id=self.customer_id
+            customer_id=self.customer_id,
         ).order_by('?').aggregate(
             Sum('customer_vat'),
             Sum('deposit'),
@@ -257,15 +257,38 @@ class CustomerInvoice(models.Model):
             self.total_price_with_tax.amount = DECIMAL_ZERO
 
         if self.price_list_multiplier != DECIMAL_ONE:
-            total_price_with_tax_wo_deposit = self.total_price_with_tax.amount - self.total_deposit.amount
+
+            result_set = purchase.Purchase.objects.filter(
+                permanence_id=self.permanence_id,
+                customer_id=self.customer_id,
+                is_resale_price_fixed=True
+            ).order_by('?').aggregate(
+                Sum('customer_vat'),
+                Sum('deposit'),
+                Sum('selling_price')
+            )
+            if result_set["customer_vat__sum"] is not None:
+                total_vat = result_set["customer_vat__sum"]
+            else:
+                total_vat = DECIMAL_ZERO
+            if result_set["deposit__sum"] is not None:
+                total_deposit = result_set["deposit__sum"]
+            else:
+                total_deposit = DECIMAL_ZERO
+            if result_set["selling_price__sum"] is not None:
+                total_price_with_tax = result_set["selling_price__sum"]
+            else:
+                total_price_with_tax = DECIMAL_ZERO
+
+            total_price_with_tax_wo_deposit = total_price_with_tax - total_deposit
             self.delta_price_with_tax.amount = -(
                 total_price_with_tax_wo_deposit - (
                     total_price_with_tax_wo_deposit * self.price_list_multiplier
                 ).quantize(TWO_DECIMALS)
             )
             self.delta_vat.amount = -(
-                self.total_vat - (
-                    self.total_vat.amount * self.price_list_multiplier
+                total_vat - (
+                    total_vat * self.price_list_multiplier
                 ).quantize(FOUR_DECIMALS)
             )
         else:

repanier/models/purchase.py

@@ -105,6 +105,8 @@ class Purchase(models.Model):
         help_text=_("This multiplier is applied to each price automatically imported/pushed."),
         default=DECIMAL_ONE, max_digits=5, decimal_places=4, blank=True,
         validators=[MinValueValidator(0)])
+    is_resale_price_fixed = models.BooleanField(_("the resale price is set by the producer"),
+                                                default=False)
     comment = models.CharField(
         _("comment"), max_length=100, default=EMPTY_STRING, blank=True, null=True)
     is_updated_on = models.DateTimeField(
@@ -332,12 +334,14 @@ def purchase_pre_save(sender, **kwargs):
         quantity = purchase.quantity_invoiced
     delta_quantity = quantity - purchase.previous_quantity
     if purchase.is_box_content:
+        purchase.is_resale_price_fixed = True
         if delta_quantity != DECIMAL_ZERO:
             offeritem.OfferItem.objects.filter(id=purchase.offer_item_id).update(
                 quantity_invoiced=F('quantity_invoiced') + delta_quantity,
             )
     else:
-        if purchase.offer_item.is_resale_price_fixed \
+        purchase.is_resale_price_fixed = purchase.offer_item.is_resale_price_fixed
+        if purchase.is_resale_price_fixed \
                 or purchase.offer_item.price_list_multiplier < DECIMAL_ONE:
             purchase.price_list_multiplier = DECIMAL_ONE
         else:

repanier/tools.py

@@ -1443,7 +1443,7 @@ def clean_offer_item(permanence, queryset, reset_add_2_stock=False):
         offer_item.manage_production = producer.manage_production
         # Important : or product.is_box -> impact into Purchase.get_customer_unit_price
         # The boxes prices are not subjects to price modifications
-        offer_item.is_resale_price_fixed = producer.is_resale_price_fixed or product.is_box
+        offer_item.is_resale_price_fixed = producer.is_resale_price_fixed or product.is_box or product.order_unit >= PRODUCT_ORDER_UNIT_DEPOSIT
         offer_item.price_list_multiplier = DECIMAL_ONE if offer_item.is_resale_price_fixed else producer.price_list_multiplier
         offer_item.stock = product.stock
         if reset_add_2_stock: