feat: end-point for pdf of all deal's barcodes, client and marketplace info in bill of payment

services/barcode.py

@@ -1,10 +1,12 @@
+from typing import Dict
+
 from sqlalchemy import select, update, insert
 from sqlalchemy.orm import selectinload, joinedload
 
 from barcodes.attributes import AttributeWriterFactory
 from barcodes.generator.default_generator import DefaultBarcodeGenerator
 from models import BarcodeTemplate, BarcodeTemplateAttribute, barcode_template_attribute_link, Product, \
-    BarcodeTemplateAdditionalField, BarcodeTemplateSize
+    BarcodeTemplateAdditionalField, BarcodeTemplateSize, Deal, DealProduct
 from schemas.barcode import *
 from services.base import BaseService
 
@@ -91,13 +93,50 @@ class BarcodeService(BaseService):
         default_generator = DefaultBarcodeGenerator()
         filename = f'{product.id}_barcode.pdf'
         pdf_buffer = default_generator.generate(
-            request.barcode,
-            product,
-            barcode_template,
-            request.quantity
+            [{
+                "barcode": request.barcode,
+                "product": product,
+                "template": barcode_template,
+                "quantity": request.quantity
+            }]
         )
         return filename, pdf_buffer
 
+    async def get_deal_barcodes_pdf(self, request: GetDealProductsBarcodesPdfRequest) -> GetProductBarcodeResponse:
+        stmt = (
+            select(Deal)
+            .options(
+                selectinload(Deal.products).joinedload(DealProduct.product).selectinload(Product.client),
+                selectinload(Deal.products).joinedload(DealProduct.product).joinedload(Product.barcodes)
+            )
+            .filter(Deal.id == request.deal_id)
+        )
+        query = await self.session.execute(stmt)
+        deal: Deal = query.scalar()
+        if not deal:
+            raise ValueError('Сделка не найдена')
+
+        barcodes_data: List[Dict[str, str | Product | BarcodeTemplate | int]] = []
+        for deal_product in deal.products:
+            product_request = GetProductBarcodeRequest(
+                product_id=deal_product.product_id,
+                barcode="",
+                barcode_template_id=deal_product.product.barcode_template_id,
+            )
+            barcode_template = await self._get_barcode_template(product_request, deal_product.product)
+            barcodes_data.append({
+                "barcode": deal_product.product.barcodes[0].barcode,
+                "product": deal_product.product,
+                "template": barcode_template,
+                "quantity": deal_product.quantity
+            })
+
+        default_generator = DefaultBarcodeGenerator()
+        filename = f'{deal.id}_deal_barcodes.pdf'
+        pdf_buffer = default_generator.generate(barcodes_data)
+
+        return filename, pdf_buffer
+
     # endregion
 
     # region Template