Add catalog sale purchase summary endpoint

- Add CatalogSaleSummarySerializer and CatalogSummarySaleLineSerializer
- Add CatalogSaleSummary API view for GET requests
- Register endpoint at /don_confiao/resumen_compra_catalogo_json/<id>
- Add comprehensive test for catalog sale summary
- Include nested customer and product details in response
- Endpoint returns id, date, customer, and lines with products

tienda_ilusion/don_confiao/serializers/__init__.py

@@ -7,6 +7,8 @@ from .sales import (
     CatalogSaleLineSerializer,
     SummarySaleLineSerializer,
     SaleSummarySerializer,
+    CatalogSummarySaleLineSerializer,
+    CatalogSaleSummarySerializer,
     SaleForRenconciliationSerializer,
 )
 from .payments import (
@@ -28,6 +30,8 @@ __all__ = [
     "CatalogSaleLineSerializer",
     "SummarySaleLineSerializer",
     "SaleSummarySerializer",
+    "CatalogSummarySaleLineSerializer",
+    "CatalogSaleSummarySerializer",
     "SaleForRenconciliationSerializer",
     # Payments
     "ReconciliationJarSerializer",

tienda_ilusion/don_confiao/serializers/sales.py

@@ -87,6 +87,23 @@ class SaleSummarySerializer(serializers.ModelSerializer):
         fields = ["id", "date", "customer", "payment_method", "lines"]
 
 
+class CatalogSummarySaleLineSerializer(serializers.ModelSerializer):
+    product = ListProductSerializer()
+
+    class Meta:
+        model = CatalogSaleLine
+        fields = ["product", "quantity", "unit_price", "description"]
+
+
+class CatalogSaleSummarySerializer(serializers.ModelSerializer):
+    customer = ListCustomerSerializer()
+    lines = CatalogSummarySaleLineSerializer(many=True, source="catalogsaleline_set")
+
+    class Meta:
+        model = CatalogSale
+        fields = ["id", "date", "customer", "lines"]
+
+
 class SaleForRenconciliationSerializer(serializers.Serializer):
     id = serializers.IntegerField()
     date = serializers.DateTimeField()