build: configurar herramientas de verificación OCA

- Instalar pre-commit con 25 hooks configurados
- Configurar black 26.1.0 para formateo de código Python
- Configurar isort 7.0.0 para ordenación de imports
- Configurar flake8 7.3.0 con flake8-bugbear
- Configurar pylint 3.1.1 con pylint-odoo 9.1.2
- Añadir autoflake y pyupgrade para mejoras automáticas
- Configurar prettier para formateo de XML/JSON/YAML
- Crear .editorconfig para consistencia de editor
- Crear Makefile con comandos útiles
- Crear check_addon.sh para verificación rápida de addons
- Actualizar configuración de VS Code con extensiones recomendadas
- Añadir documentación completa de uso
- Aplicar formateo automático a archivos existentes
- Deshabilitar setuptools-odoo (no soporta Odoo 18.0 aún)
- Deshabilitar fix-encoding-pragma (obsoleto, usar pyupgrade)

purchase_triple_discount/models/purchase_triple_discount_mixin.py

@@ -0,0 +1,82 @@
+# Copyright 2017-19 Tecnativa - David Vidal
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+import functools
+
+from odoo import api
+from odoo import fields
+from odoo import models
+
+
+class TripleDiscountMixin(models.AbstractModel):
+    _name = "purchase.triple.discount.mixin"
+    _description = "Purchase Triple Discount Mixin"
+
+    discount = fields.Float(
+        compute="_compute_discount",
+        store=True,
+    )
+    discount1 = fields.Float(
+        string="Disc. 1 (%)",
+        digits="Discount",
+        readonly=False,
+    )
+
+    discount2 = fields.Float(
+        string="Disc. 2 (%)",
+        digits="Discount",
+        readonly=False,
+    )
+    discount3 = fields.Float(
+        string="Disc. 3 (%)",
+        digits="Discount",
+        readonly=False,
+    )
+
+    _sql_constraints = [
+        (
+            "discount1_limit",
+            "CHECK (discount1 <= 100.0)",
+            "Discount 1 must be lower than 100%.",
+        ),
+        (
+            "discount2_limit",
+            "CHECK (discount2 <= 100.0)",
+            "Discount 2 must be lower than 100%.",
+        ),
+        (
+            "discount3_limit",
+            "CHECK (discount3 <= 100.0)",
+            "Discount 3 must be lower than 100%.",
+        ),
+    ]
+
+    @api.depends(lambda self: self._get_multiple_discount_field_names())
+    def _compute_discount(self):
+        for record in self:
+            record.discount = record._get_aggregated_discount_from_values(
+                {
+                    fname: record[fname]
+                    for fname in record._get_multiple_discount_field_names()
+                }
+            )
+
+    def _get_aggregated_discount_from_values(self, values):
+        discount_fnames = self._get_multiple_discount_field_names()
+        discounts = []
+        for discount_fname in discount_fnames:
+            discounts.append(values.get(discount_fname) or 0.0)
+        return self._get_aggregated_multiple_discounts(discounts)
+
+    @staticmethod
+    def _get_multiple_discount_field_names():
+        return ["discount1", "discount2", "discount3"]
+
+    @staticmethod
+    def _get_aggregated_multiple_discounts(discounts):
+        discount_values = []
+        for discount in discounts:
+            discount_values.append(1 - (discount or 0.0) / 100.0)
+        aggregated_discount = (
+            1 - functools.reduce((lambda x, y: x * y), discount_values)
+        ) * 100
+        return aggregated_discount