[ADD] sale_loyalty_general_discount_promo_code

sale_loyalty_general_discount_promo_code/README.rst

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+========================================
+Sale Loyalty General Discount Promo Code
+========================================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:f607e90aa781cba94a03d02423c322fb46de6faf028ce7deb5389e0635d6a29e
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fsale--promotion-lightgray.png?logo=github
+    :target: https://github.com/OCA/sale-promotion/tree/16.0/sale_loyalty_general_discount_promo_code
+    :alt: OCA/sale-promotion
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/sale-promotion-16-0/sale-promotion-16-0-sale_loyalty_general_discount_promo_code
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runboat-Try%20me-875A7B.png
+    :target: https://runboat.odoo-community.org/builds?repo=OCA/sale-promotion&target_branch=16.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module automatically applies the promo code discount percentage to
+each sales order line when the promo code is activated.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Use Cases / Context
+===================
+
+Currently when a discount code is added to a sales order in Odoo, the
+discount is added as a single sales order line. This causes issues with
+the way taxes are calculated on the order, leading to potential tax
+errors and audit issues.
+
+Configuration
+=============
+
+1. Go to **Sales** > **Configuration** > **Settings**.
+2. Scroll down to the **Pricing** section.
+3. Enable the checkbox **Automatically apply promo code discount
+   percentage**.
+4. The checkbox **Discounts** should be disabled by default
+5. Click **Save**.
+
+Usage
+=====
+
+1. Create a Coupon Program
+--------------------------
+
+- Go to **Sale > Products > Discount & Loyalty**.
+- Create a **program** with the **program type** set to ``Coupons`` or
+  ``Discount`` or ``Promotions``.
+
+2. Define Rewards
+-----------------
+
+- Create **rewards** for the program with:
+
+  - **Reward Type**: ``Discount``
+  - **Discount Mode**: ``Percent``
+
+3. Generate Coupons
+-------------------
+
+- Generate **coupon codes** for the program.
+
+4. Apply Coupon to a Quotation
+------------------------------
+
+- Create a **new quotation** and add products.
+- Apply the **coupon code** to the quotation.
+
+5. Verify Discount Application
+------------------------------
+
+- The **discount column (``disc``)** will be **recomputed**.
+- The **reward description** will display the **amount of savings**
+  applied by the discount code.
+
+--------------
+
+Notes
+~~~~~
+
+- Ensure the program is correctly configured before applying coupons.
+- The discount applies based on the program settings (``order``,
+  ``specific``, or ``cheapest``).
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/sale-promotion/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us to smash it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/sale-promotion/issues/new?body=module:%20sale_loyalty_general_discount_promo_code%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+-------
+
+* Kencove
+
+Contributors
+------------
+
+- `Trobz <https://trobz.com>`__:
+
+  - Tuan Nguyen <[email protected]>
+
+Maintainers
+-----------
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+.. |maintainer-natuan9| image:: https://github.com/natuan9.png?size=40px
+    :target: https://github.com/natuan9
+    :alt: natuan9
+
+Current `maintainer <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-natuan9| 
+
+This module is part of the `OCA/sale-promotion <https://github.com/OCA/sale-promotion/tree/16.0/sale_loyalty_general_discount_promo_code>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

sale_loyalty_general_discount_promo_code/__init__.py

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+from . import models

sale_loyalty_general_discount_promo_code/__manifest__.py

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+# Copyright 2025 Kencove
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl)
+{
+    "name": "Sale Loyalty General Discount Promo Code",
+    "summary": "Apply the promo code discount percentage to each sales order line",
+    "version": "16.0.1.0.0",
+    "category": "web",
+    "website": "https://github.com/OCA/sale-promotion",
+    "author": "Kencove, Odoo Community Association (OCA)",
+    "maintainers": ["natuan9"],
+    "license": "AGPL-3",
+    "depends": [
+        "sale_loyalty",
+    ],
+    "data": [
+        "views/res_config_settings_views.xml",
+    ],
+    "assets": {},
+}

sale_loyalty_general_discount_promo_code/models/__init__.py

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+from . import sale_order, res_config_settings

sale_loyalty_general_discount_promo_code/models/res_config_settings.py

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+from odoo import fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = "res.config.settings"
+
+    automatically_apply_promo_code_discount_percentage = fields.Boolean(
+        config_parameter=(
+            "sale_loyalty_general_discount_promo_code."
+            "automatically_apply_promo_code_discount_percentage"
+        ),
+    )

sale_loyalty_general_discount_promo_code/models/sale_order.py

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+from odoo import _, models
+from odoo.tools import format_amount
+
+
+class SaleOrder(models.Model):
+    _inherit = "sale.order"
+
+    def _get_total_saving_specific(self, reward):
+        self.ensure_one()
+        assert reward.discount_applicability == "specific"
+
+        order_lines = self.order_line - self._get_no_effect_on_threshold_lines()
+        lines_to_discount = order_lines.filtered(
+            lambda line: not line.reward_id
+            and line.product_uom_qty
+            and line.price_total
+            and line.product_id.filtered_domain(reward._get_discount_product_domain())
+        )
+
+        return sum(
+            line.price_unit * line.product_uom_qty * (reward.discount / 100)
+            for line in lines_to_discount
+        )
+
+    def _get_total_saving_cheapest(self, reward):
+        self.ensure_one()
+        assert reward.discount_applicability == "cheapest"
+
+        cheapest_line = self._cheapest_line()
+        if not cheapest_line:
+            return 0
+        return (
+            cheapest_line.price_unit
+            * cheapest_line.product_uom_qty
+            * (reward.discount / 100)
+        )
+
+    def _get_total_saving_order(self, reward):
+        self.ensure_one()
+        assert reward.discount_applicability == "order"
+        total_saving = 0
+        for line in self.order_line:
+            if line.reward_id:
+                continue
+            total_saving += (
+                line.price_unit * line.product_uom_qty * (reward.discount / 100)
+            )
+        return total_saving
+
+    def _get_total_saved_amount(self, reward):
+        total_saving = 0
+        reward_applies_on = reward.discount_applicability
+        if reward_applies_on == "order":
+            total_saving = self._get_total_saving_order(reward)
+        elif reward_applies_on == "specific":
+            total_saving = self._get_total_saving_specific(reward)
+        elif reward_applies_on == "cheapest":
+            total_saving = self._get_total_saving_cheapest(reward)
+
+        return format_amount(self.env, total_saving, self.pricelist_id.currency_id)
+
+    def _get_reward_values_discount(self, reward, coupon, **kwargs):
+        rewards = super()._get_reward_values_discount(reward, coupon, **kwargs)
+
+        if (
+            not self.env["ir.config_parameter"]
+            .sudo()
+            .get_param(
+                "sale_loyalty_general_discount_promo_code."
+                "automatically_apply_promo_code_discount_percentage"
+            )
+        ):
+            return rewards
+
+        for reward_line in rewards:
+            if (
+                reward.reward_type == "discount"
+                and reward.discount_mode == "percent"
+                and (
+                    reward.program_id.program_type
+                    in ["coupons", "promo_code", "promotion"]
+                )
+            ):
+                # Get the saved amount
+                # Cannot use the reward_line.price_unit for the saved amount
+                # because _get_reward_line_values is called twice.
+                # Once in _apply_program_reward and once in _update_programs_and_rewards
+                saved_amount = self._get_total_saved_amount(reward)
+                reward_line.update(
+                    {
+                        "display_type": "line_note",
+                        "name": _(
+                            f"You saved {saved_amount} with promo {reward.program_id.name}"
+                        ),
+                        "price_unit": 0,
+                        "product_uom_qty": 0,
+                        "product_id": None,
+                        "product_uom": None,
+                    }
+                )
+
+        return rewards
+
+    def update_discount_percentage(self):
+        self.ensure_one()
+        reward_lines = self.order_line.filtered(lambda line: line.reward_id)
+        order_lines = self.order_line - reward_lines
+
+        reward_groups = {"cheapest": [], "specific": [], "order": []}
+        for reward_line in reward_lines:
+            reward = reward_line.reward_id
+            if reward.discount_mode == "percent":
+                reward_groups[reward.discount_applicability].append(reward)
+
+        cheapest_line = self._cheapest_line() if reward_groups["cheapest"] else None
+        specific_domains = {
+            reward: reward._get_discount_product_domain()
+            for reward in reward_groups["specific"]
+        }
+
+        for line in order_lines:
+            line.discount = 0
+
+            # Update discount based on `order` rewards
+            for reward in reward_groups["order"]:
+                line.discount = 100 - (100 - line.discount) * (
+                    1 - reward.discount / 100
+                )
+
+            # Update discount based on `cheapest` rewards
+            if line == cheapest_line:
+                for reward in reward_groups["cheapest"]:
+                    line.discount = 100 - (100 - line.discount) * (
+                        1 - reward.discount / 100
+                    )
+
+            # Update discount based on `specific` rewards
+            for reward, domain in specific_domains.items():
+                if line.product_id.filtered_domain(domain):
+                    line.discount = 100 - (100 - line.discount) * (
+                        1 - reward.discount / 100
+                    )
+
+    def _write_vals_from_reward_vals(self, reward_vals, old_lines, delete=True):
+        result = super()._write_vals_from_reward_vals(
+            reward_vals, old_lines, delete=delete
+        )
+        if (
+            not self.env["ir.config_parameter"]
+            .sudo()
+            .get_param(
+                "sale_loyalty_general_discount_promo_code."
+                "automatically_apply_promo_code_discount_percentage"
+            )
+        ):
+            return result
+        self.update_discount_percentage()
+        return result

sale_loyalty_general_discount_promo_code/readme/CONFIGURE.md

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+1. Go to **Sales** > **Configuration** > **Settings**.
+2. Scroll down to the **Pricing** section.
+3. Enable the checkbox **Automatically apply promo code discount percentage**.
+4. The checkbox **Discounts** should be disabled by default
+4. Click **Save**.

sale_loyalty_general_discount_promo_code/readme/CONTEXT.md

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+Currently when a discount code is added to a sales order in Odoo, the discount is added as a single sales order line. This causes issues with the way taxes are calculated on the order, leading to potential tax errors and audit issues.

sale_loyalty_general_discount_promo_code/readme/CONTRIBUTORS.md

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+- [Trobz](https://trobz.com):
+  - Tuan Nguyen \<<[email protected]>\>

sale_loyalty_general_discount_promo_code/readme/DESCRIPTION.md

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+ This module automatically applies the promo code discount percentage to each sales order line when the promo code is activated.

sale_loyalty_general_discount_promo_code/readme/USAGE.md

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+## 1. Create a Coupon Program
+- Go to **Sale > Products > Discount & Loyalty**.
+- Create a **program** with the **program type** set to `Coupons` or `Discount` or `Promotions`.
+
+## 2. Define Rewards
+- Create **rewards** for the program with:
+  - **Reward Type**: `Discount`
+  - **Discount Mode**: `Percent`
+
+## 3. Generate Coupons
+- Generate **coupon codes** for the program.
+
+## 4. Apply Coupon to a Quotation
+- Create a **new quotation** and add products.
+- Apply the **coupon code** to the quotation.
+
+## 5. Verify Discount Application
+- The **discount column (`disc`)** will be **recomputed**.
+- The **reward description** will display the **amount of savings** applied by the discount code.
+
+---
+
+### Notes
+- Ensure the program is correctly configured before applying coupons.
+- The discount applies based on the program settings (`order`, `specific`, or `cheapest`).