add discount account logic in POS module transaction journal entries

.gitignore

@@ -0,0 +1,140 @@
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__manifest__.py

@@ -19,7 +19,7 @@
     'version': '17.0.1.0.0',
 
     # any module necessary for this one to work correctly
-    'depends': ['point_of_sale'],
+    'depends': ['point_of_sale', 'pos_discount'],
 
     # always loaded
     'data': [

models/pos_payment_method.py

@@ -11,3 +11,10 @@ class PosPaymentMethod(models.Model):
         domain=[('deprecated', '=', False)],
         help='Account used for income lines when splitting by payment method. '
              'If empty, the default income account from the product will be used.')
+
+    discount_account_id = fields.Many2one(
+        'account.account',
+        string='Discount Account',
+        domain=[('deprecated', '=', False)],
+        help='Account used for discount product lines when splitting by payment method. '
+             'If empty, the default discount account from the product will be used.')

models/pos_session.py

@@ -11,52 +11,55 @@ class PosSession(models.Model):
     def _accumulate_amounts(self, data):
         # Call the original method to get all the standard accumulations
         data = super(PosSession, self)._accumulate_amounts(data)
-        
+
         # Get all orders in this session
         closed_orders = self._get_closed_orders()
-        
+
         # If no orders, return original data
         if not closed_orders:
             return data
-            
+
         # Get the original sales data
         sales = data.get('sales', {})
         if not sales:
             return data
-            
+
         # Create new sales data structure split by payment method
         split_sales = defaultdict(lambda: {'amount': 0.0, 'amount_converted': 0.0, 'tax_amount': 0.0})
-        
+
+        # Get discount product ID from config
+        discount_product_id = self.config_id.discount_product_id.id if self.config_id.discount_product_id else None
+
         # For each sale entry, we need to distribute it across payment methods
         for sale_key, sale_amounts in sales.items():
             # Skip if this is a tax key (we only want to split actual sales)
             if len(sale_key) < 4:  # Not a standard sales key
                 continue
-                
+
             total_amount = sale_amounts['amount']
             total_amount_converted = sale_amounts['amount_converted']
             tax_amount = sale_amounts.get('tax_amount', 0.0)  # Get tax amount if it exists
-            
+
             if float_is_zero(total_amount, precision_rounding=self.currency_id.rounding):
                 continue
-                
+
             # Distribute this sales amount across all orders based on their payment methods
             total_payment_amount = sum(sum(payment.amount for payment in order.payment_ids) for order in closed_orders)
-            
+
             if float_is_zero(total_payment_amount, precision_rounding=self.currency_id.rounding):
                 continue
-                
+
             # Distribute the sales amount across all orders proportionally to their payments
             for order in closed_orders:
                 if order.is_invoiced:
                     continue  # Skip invoiced orders
-                    
+
                 order_payments = order.payment_ids
                 order_payment_total = sum(payment.amount for payment in order_payments)
-                
+
                 if float_is_zero(order_payment_total, precision_rounding=order.currency_id.rounding):
                     continue
-                    
+
                 # For each payment in this order, create a split sales entry
                 for payment in order_payments:
                     # Calculate the proportion of this payment relative to all payments
@@ -64,19 +67,31 @@ class PosSession(models.Model):
                     payment_amount = total_amount * payment_proportion
                     payment_amount_converted = total_amount_converted * payment_proportion
                     payment_tax_amount = tax_amount * payment_proportion
-                    
+
                     if float_is_zero(payment_amount, precision_rounding=self.currency_id.rounding):
                         continue
-                        
-                    # Use the payment method's income account if specified, otherwise use original account
+
+                    # Determine the account to use based on whether this is a discount product
                     income_account_id = sale_key[0]  # default account
-                    if payment.payment_method_id.income_account_id and payment.payment_method_id.income_account_id.id:
-                        income_account_id = payment.payment_method_id.income_account_id.id
-                    
+
+                    # Check if this sale key corresponds to a discount product
+                    # We need to check if the account in the sale_key matches the discount product account
+                    if discount_product_id:
+                        # Get the discount product's income account
+                        discount_product = self.env['product.product'].browse(discount_product_id)
+                        discount_account = discount_product._get_product_accounts()['income']
+                        if discount_account and discount_account.id == sale_key[0]:
+                            # This is a discount product, use discount account if configured
+                            if payment.payment_method_id.discount_account_id:
+                                income_account_id = payment.payment_method_id.discount_account_id.id
+                        elif payment.payment_method_id.income_account_id:
+                            # This is a regular product, use income account if configured
+                            income_account_id = payment.payment_method_id.income_account_id.id
+
                     # Ensure we have a valid account ID
                     if not income_account_id:
                         continue
-                        
+
                     # Create a new key that includes the payment method
                     new_sale_key = (
                         # account (use payment method account if specified)
@@ -90,12 +105,12 @@ class PosSession(models.Model):
                         # base tags (same as original)
                         sale_key[3],
                     )
-                    
+
                     # Update the split sales data
                     split_sales[new_sale_key]['amount'] += payment_amount
                     split_sales[new_sale_key]['amount_converted'] += payment_amount_converted
                     split_sales[new_sale_key]['tax_amount'] += payment_tax_amount
-                        
+
         # Replace the original sales data with our split sales data
         data['sales'] = split_sales
         return data

views/pos_payment_method_views.xml

@@ -7,6 +7,7 @@
         <field name="arch" type="xml">
             <xpath expr="//group[@name='Payment methods']/group" position="inside">
                 <field name="income_account_id" domain="[('deprecated', '=', False)]"/>
+                <field name="discount_account_id" domain="[('deprecated', '=', False)]"/>
             </xpath>
         </field>
     </record>