Enhance invoice processing and validation logic

- Updated `InvoiceService` to accurately reflect the number of line items in `party_count` for invoices.
- Modified weight calculations in the create and update validators to ensure consistent handling of weight types, now using lowercase comparison for "KGS".
- Adjusted invoice data structure in the frontend to include `total_items` and refined logistics handling.
- Improved table rendering in the invoice edit component for better sticky header behavior and item visibility.

These changes aim to improve data integrity and user experience in invoice management.

backend/api/v1/modules/a76/invoices/exports/process/sub_process/review_qty_vs_weight.py

@@ -61,7 +61,7 @@ def review_qty_vs_weight(
             continue
 
         qty = line.quantity.quantity or Decimal(0)
-        net_weight = getattr(line.quantity.quantity, None) or Decimal(0)
+        net_weight = line.quantity.net_weight or Decimal(0)
 
         if net_weight != qty:
             errors.add_error(

backend/api/v1/modules/a76/invoices/imports/process/main_process.py

@@ -198,7 +198,7 @@ def _update_invoice_totals(invoice: InvoiceHeader) -> None:
 
     # Marcar la factura como procesada
     invoice.status = InvoiceStatus.PROCESSED
-    invoice.party_count = len(invoice.financials.__dict__)  # se sobreescribirá con el conteo real
+    invoice.party_count = len(lines)
 
     # TODO: SSisGen:ActSeguridad = 1 → invoice.updated_by = current_user
     # TODO: SSisGen:CalValBaseTCPed = 1 →

backend/api/v1/modules/a76/invoices/services.py

@@ -10,6 +10,7 @@ from .imports.validators.update import validate_update as validate_update_import
 from .exports.validators.create import validate_create as validate_create_export
 from .exports.validators.update import validate_update as validate_update_export
 from .common.common_validators import invoice_exists
+from api.v1.modules.a76.items.models import LineItem
 
 from . import models, schemas
 
@@ -166,6 +167,25 @@ class InvoiceService:
 
         total = query.count()
         items = query.offset(skip).limit(limit).all()
+
+        # Keep party_count aligned with the real number of line items.
+        # This avoids stale values stored in invoice_header.party_count.
+        if items:
+            invoice_ids = [inv.id for inv in items]
+            counts = (
+                db.query(LineItem.invoice_id, func.count(LineItem.id))
+                .filter(
+                    LineItem.invoice_id.in_(invoice_ids),
+                    LineItem.tenant_id == tenant_id,
+                    LineItem.company_id == company_id,
+                )
+                .group_by(LineItem.invoice_id)
+                .all()
+            )
+            count_map = {invoice_id: int(count) for invoice_id, count in counts}
+            for inv in items:
+                inv.party_count = count_map.get(inv.id, 0)
+
         return items, total
 
     @staticmethod

backend/api/v1/modules/a76/items/exports/validators/create.py

@@ -248,18 +248,18 @@ def validate_create(
 
         # Calcular peso neto en kilogramos (estándar interno)
         if unit_is_kgs:
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.net_weight = quantity
             else:  # invoice en libras
                 line.quantity.net_weight = quantity * Decimal("2.204624")
         elif unit_is_lbs:
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.net_weight = quantity / Decimal("2.204624")
             else:  # invoice en libras
                 line.quantity.net_weight = quantity
         else:
             # Otra unidad de medida - usar peso capturado y convertir si es necesario
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 # El peso capturado está en kilos
                 line.quantity.net_weight = net_weight_input
             else:
@@ -289,7 +289,7 @@ def validate_create(
 
         # Si no se proporcionó peso bruto, calcularlo
         if not gross_weight_input or gross_weight_input == 0:
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.gross_weight = line.quantity.net_weight + (
                     package_weight_unit * package_quantity
                 )
@@ -299,7 +299,7 @@ def validate_create(
                 )
         else:
             # Convertir peso bruto capturado según tipo de factura
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.gross_weight = gross_weight_input
             else:  # libras
                 line.quantity.gross_weight = gross_weight_input / Decimal("2.204624")

backend/api/v1/modules/a76/items/exports/validators/update.py

@@ -95,21 +95,19 @@ def validate_update(
             # Se proporcionó nuevo peso neto, convertir según tipo
             net_weight_input = line.quantity.net_weight
 
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.net_weight = net_weight_input
             else:  # libras, convertir a kilos
                 line.quantity.net_weight = net_weight_input / Decimal("2.204624")
         else:
             # Mantener peso existente
-            line.quantity.net_weight = existing_line.quantity.net_weight
-
-        print(f"After weight conversion: net_weight={line.quantity.net_weight}, gross_weight={line.quantity.gross_weight}, weight_type={invoice_weight_type}")
+            line.quantity.net_weight = existing_line.quantity.net_weight        
 
         # Convertir peso bruto si se proporcionó
         if line.quantity.gross_weight is not None:
             gross_weight_input = line.quantity.gross_weight
 
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.gross_weight = gross_weight_input
             else:  # libras, convertir a kilos
                 line.quantity.gross_weight = gross_weight_input / Decimal("2.204624")

backend/api/v1/modules/a76/items/imports/validators/create.py

@@ -232,18 +232,18 @@ def validate_create(
 
         # Calcular peso neto en kilogramos (estándar interno)
         if unit_is_kgs:
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.net_weight = quantity
             else:  # invoice en libras
                 line.quantity.net_weight = quantity * Decimal("2.204624")
         elif unit_is_lbs:
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.net_weight = quantity / Decimal("2.204624")
             else:  # invoice en libras
                 line.quantity.net_weight = quantity
         else:
             # Otra unidad de medida - usar peso capturado y convertir si es necesario
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 # El peso capturado está en kilos
                 line.quantity.net_weight = net_weight_input
             else:
@@ -273,7 +273,7 @@ def validate_create(
 
         # Si no se proporcionó peso bruto, calcularlo
         if not gross_weight_input or gross_weight_input == 0:
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.gross_weight = line.quantity.net_weight + (
                     package_weight_unit * package_quantity
                 )
@@ -283,7 +283,7 @@ def validate_create(
                 )
         else:
             # Convertir peso bruto capturado según tipo de factura
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.gross_weight = gross_weight_input
             else:  # libras
                 line.quantity.gross_weight = gross_weight_input / Decimal("2.204624")

backend/api/v1/modules/a76/items/imports/validators/update.py

@@ -94,21 +94,19 @@ def validate_update(
             # Se proporcionó nuevo peso neto, convertir según tipo
             net_weight_input = line.quantity.net_weight
 
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.net_weight = net_weight_input
             else:  # libras, convertir a kilos
                 line.quantity.net_weight = net_weight_input / Decimal("2.204624")
         else:
             # Mantener peso existente
-            line.quantity.net_weight = existing_line.quantity.net_weight
-
-        print(f"After weight conversion: net_weight={line.quantity.net_weight}, gross_weight={line.quantity.gross_weight}, weight_type={invoice_weight_type}")
+            line.quantity.net_weight = existing_line.quantity.net_weight        
 
         # Convertir peso bruto si se proporcionó
         if line.quantity.gross_weight is not None:
             gross_weight_input = line.quantity.gross_weight
 
-            if invoice_weight_type == "KGS":
+            if invoice_weight_type.lower() == "kgs":
                 line.quantity.gross_weight = gross_weight_input
             else:  # libras, convertir a kilos
                 line.quantity.gross_weight = gross_weight_input / Decimal("2.204624")