add discount account logic in POS module transaction journal entries

.gitignore

@@ -0,0 +1,140 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+build/
+temp/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+Pipfile.lock
+
+# poetry
+poetry.lock
+
+# PEP 582; used by python-next
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# VS Code settings
+.vscode/

__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

@@ -27,6 +27,9 @@ class PosSession(models.Model):
         # 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)
@@ -68,9 +71,21 @@ class PosSession(models.Model):
                     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:
+
+                    # 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

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>