From 3a35955d24a5c71c841d64295d5e4bb648a25022 Mon Sep 17 00:00:00 2001
From: luis <luis@criptomart.net>
Date: Mon, 6 Oct 2025 12:10:46 +0200
Subject: [PATCH 1/3] purchase_order_product_recommendation_supermarket: make
 prevous period data optional

---
 .../wizards/purchase_order_recommendation.py  | 70 +++++++++++--------
 .../wizards/purchase_order_recommendation.xml | 15 +++-
 2 files changed, 53 insertions(+), 32 deletions(-)

diff --git a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
index 95355aa..6731a91 100644
--- a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
+++ b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
@@ -20,6 +20,11 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
         default=False,
         help="If enabled, days when the product stock was 0 or less will not be considered in the daily sales calculation.",
     )
+    include_previous_period = fields.Boolean(
+        string="Include previous period stats",
+        default=True,
+        help="If disabled, the previous period (same number of days immediately preceding) is NOT queried. This saves a read_group on stock move lines and skips zero-stock day analysis for that window.",
+    )
     total_days = fields.Integer(
         string="Total days",
         compute="_compute_total_days",
@@ -193,36 +198,37 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
         if len(found_scrapped):
             res["units_scrapped"] = found_scrapped[0]["qty_done"]
 
-        days = self._get_total_days()
-        prev_date_end = self.date_begin - timedelta(days=1)
-        prev_date_begin = self.date_begin - timedelta(days=days)
-        domain = self.with_context(
-            {
-                "period_date_begin": prev_date_begin,
-                "period_date_end": prev_date_end,
-            }
-        )._get_move_line_domain(product_id, src="internal", dst="customer")
-        found_previous_period = self.env["stock.move.line"].read_group(
-            domain, ["product_id", "qty_done"], ["product_id"]
-        )
-        if len(found_previous_period):
-            res["units_delivered_prev"] = found_previous_period[0]["qty_done"]
-            if self.ignore_zero_stock_days:
-                days_with_stock = days - self.with_context(
-                    {
-                        "period_date_begin": prev_date_begin,
-                        "period_date_end": prev_date_end,
-                    }
-                )._get_days_out_of_stock(product_id)
-                res["units_avg_delivered_prev"] = (
-                    res["units_delivered_prev"] / days_with_stock
-                    if days_with_stock != 0
-                    else 1
-                )
-            else:
-                res["units_avg_delivered_prev"] = (
-                    found_previous_period[0]["qty_done"] / days if days != 0 else 1
-                )
+        if self.include_previous_period:
+            days = self._get_total_days()
+            prev_date_end = self.date_begin - timedelta(days=1)
+            prev_date_begin = self.date_begin - timedelta(days=days)
+            domain = self.with_context(
+                {
+                    "period_date_begin": prev_date_begin,
+                    "period_date_end": prev_date_end,
+                }
+            )._get_move_line_domain(product_id, src="internal", dst="customer")
+            found_previous_period = self.env["stock.move.line"].read_group(
+                domain, ["product_id", "qty_done"], ["product_id"]
+            )
+            if len(found_previous_period):
+                res["units_delivered_prev"] = found_previous_period[0]["qty_done"]
+                if self.ignore_zero_stock_days:
+                    days_with_stock = days - self.with_context(
+                        {
+                            "period_date_begin": prev_date_begin,
+                            "period_date_end": prev_date_end,
+                        }
+                    )._get_days_out_of_stock(product_id)
+                    res["units_avg_delivered_prev"] = (
+                        res["units_delivered_prev"] / days_with_stock
+                        if days_with_stock != 0
+                        else 1
+                    )
+                else:
+                    res["units_avg_delivered_prev"] = (
+                        found_previous_period[0]["qty_done"] / days if days != 0 else 1
+                    )
         seller = product_id._select_seller(
             partner_id=self.order_id.partner_id,
             date=fields.Date.today(),
@@ -273,6 +279,10 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
 class PurchaseOrderRecommendationLine(models.TransientModel):
     _inherit = "purchase.order.recommendation.line"
 
+    include_previous_period = fields.Boolean(
+        related="wizard_id.include_previous_period", store=False, readonly=True
+    )
+
     packaging_id = fields.Many2one(
         comodel_name="product.packaging",
         string="Packaging",
diff --git a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.xml b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.xml
index 27d67ed..f62749b 100644
--- a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.xml
+++ b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.xml
@@ -25,6 +25,7 @@
             <field name="show_all_products" position="after">
                 <field name="order_by_packages" />
                 <field name="ignore_zero_stock_days" />
+                <field name="include_previous_period" />
                 <field name="last_order_total_amount" widget="monetary" options="{'currency_field': 'currency_id'}" />
                 <field name="order_total_amount" widget="monetary" options="{'currency_field': 'currency_id'}" />
                 <field name="currency_id" invisible="1"/>
@@ -32,6 +33,15 @@
             <field name="product_id" position="attributes">
                 <attribute name="optional">hide</attribute>
             </field>
+            <field name="price_unit" position="attributes">
+                <attribute name="optional">show</attribute>
+            </field>
+            <field name="units_available" position="attributes">
+                <attribute name="optional">show</attribute>
+            </field>
+            <field name="units_avg_delivered" position="attributes">
+                <attribute name="optional">show</attribute>
+            </field>
             <field name="product_name" position="attributes">
                 <attribute name="optional">show</attribute>
             </field>
@@ -39,8 +49,9 @@
                 <field name="units_scrapped" string="Qty scrapped" optional="hide" />
                 <field name="stock_duration" string="Stock Duration" optional="hide" />
                 <field name="days_without_stock" optional="hide" />
-                <field name="units_delivered_prev" string="Prev Period" optional="hide" />
-                <field name="units_avg_delivered_prev" string="Avg Prev Period" optional="hide" />
+                <field name="include_previous_period" invisible="1"/>
+                <field name="units_delivered_prev" string="Prev Period" optional="hide" attrs="{'invisible': [('include_previous_period','=',False)]}" />
+                <field name="units_avg_delivered_prev" string="Avg Prev Period" optional="hide" attrs="{'invisible': [('include_previous_period','=',False)]}" />
                 <field name="packaging_id" optional="show" />
                 <field name="packaging_contained_qty" string="Packaging Contained Qty" optional="hide" />
                 <field name="subtotal_amount" string="Subtotal Amount" optional="hide" />

From 65dd899963cf2bc2d07d26c11c70c1e8e22b0539 Mon Sep 17 00:00:00 2001
From: luis <luis@criptomart.net>
Date: Mon, 6 Oct 2025 12:51:58 +0200
Subject: [PATCH 2/3] purchase_order_product_recommendation_supermarket: add a
 setting in products to suggest a minimum purchase when forecast <= 0

---
 .../__init__.py                               |  1 +
 .../__manifest__.py                           |  5 +++-
 .../i18n/es.po                                | 29 +++++++++++++++++--
 ...der_product_recommendation_supermarket.pot | 25 ++++++++++++++++
 .../models/__init__.py                        |  1 +
 .../models/product_template.py                | 10 +++++++
 .../views/product_template_view.xml           | 15 ++++++++++
 .../wizards/purchase_order_recommendation.py  | 11 ++++++-
 8 files changed, 93 insertions(+), 4 deletions(-)
 create mode 100644 purchase_order_product_recommendation_supermarket/models/__init__.py
 create mode 100644 purchase_order_product_recommendation_supermarket/models/product_template.py
 create mode 100644 purchase_order_product_recommendation_supermarket/views/product_template_view.xml

diff --git a/purchase_order_product_recommendation_supermarket/__init__.py b/purchase_order_product_recommendation_supermarket/__init__.py
index 5cb1c49..aee8895 100644
--- a/purchase_order_product_recommendation_supermarket/__init__.py
+++ b/purchase_order_product_recommendation_supermarket/__init__.py
@@ -1 +1,2 @@
+from . import models
 from . import wizards
diff --git a/purchase_order_product_recommendation_supermarket/__manifest__.py b/purchase_order_product_recommendation_supermarket/__manifest__.py
index 51393df..6797bee 100644
--- a/purchase_order_product_recommendation_supermarket/__manifest__.py
+++ b/purchase_order_product_recommendation_supermarket/__manifest__.py
@@ -9,6 +9,9 @@
     "author": "Criptomart",
     "website": "https://criptomart.net",
     "depends": ["purchase_order_product_recommendation"],
-    "data": ["wizards/purchase_order_recommendation.xml"],
+    "data": [
+        "wizards/purchase_order_recommendation.xml",
+        "views/product_template_view.xml",
+    ],
     "demo": [],
 }
diff --git a/purchase_order_product_recommendation_supermarket/i18n/es.po b/purchase_order_product_recommendation_supermarket/i18n/es.po
index 1ba61da..937d6f4 100644
--- a/purchase_order_product_recommendation_supermarket/i18n/es.po
+++ b/purchase_order_product_recommendation_supermarket/i18n/es.po
@@ -15,6 +15,31 @@ msgstr ""
 "Content-Transfer-Encoding: \n"
 "Plural-Forms: \n"
 
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__include_previous_period
+msgid "Include previous period stats"
+msgstr "Incluir estadísticas del periodo previo"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__include_previous_period
+msgid "If disabled, the previous period (same number of days immediately preceding) is NOT queried. This saves a read_group on stock move lines and skips zero-stock day analysis for that window."
+msgstr "Si se desactiva, no se consulta el periodo previo (mismo número de días inmediatamente anteriores). Ahorra tiempo en el cálculo al no consultar movimientos de stock y omite el análisis de días sin stock para esa ventana de tiempo."
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_template__po_min_suggest_if_forecast_le_zero
+msgid "Suggest minimum purchase when forecast <= 0"
+msgstr "Sugerir compra mínima cuando el stock previsto <= 0"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_template__po_min_suggest_if_forecast_le_zero
+msgid "If enabled, the purchase recommendation wizard will always propose at least 1 unit (or 1 full package when ordering by packages) when the forecasted stock is less or equal to 0."
+msgstr "Si se activa, el asistente de recomendación de compras propondrá siempre al menos 1 unidad (o 1 paquete completo al pedir por paquetes) cuando el stock previsto sea menor o igual que 0."
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model_terms:ir.ui.view,arch_db:purchase_order_product_recommendation_supermarket.view_product_template_form_po_min_suggest
+msgid "Purchase Recommendation"
+msgstr "Recomendación de compra"
+
 #. module: purchase_order_product_recommendation_supermarket
 #: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation_line__units_avg_delivered_prev
 msgid "Average daily consumption during the previous period"
@@ -101,9 +126,9 @@ msgid ""
 "Indicate for how many days the new order should cover the stock. If not set,"
 " the default module behavior is kept."
 msgstr ""
-"Indica durante cuantos días el nuevo pedido debe cubrir el stock. Sino se "
+"Indica durante cuantos días el nuevo pedido debe cubrir el stock. Si no se "
 "rellena este campo las recomendaciones mostradas se calcularán para cubrir "
-"un periodo equivalente al mostrado en días totales."
+"un periodo equivalente al mostrado en días analizados."
 
 #. module: purchase_order_product_recommendation_supermarket
 #: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__order_by_packages
diff --git a/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot b/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot
index 33e561d..0f5845f 100644
--- a/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot
+++ b/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot
@@ -15,6 +15,31 @@ msgstr ""
 "Content-Transfer-Encoding: \n"
 "Plural-Forms: \n"
 
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__include_previous_period
+msgid "Include previous period stats"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__include_previous_period
+msgid "If disabled, the previous period (same number of days immediately preceding) is NOT queried. This saves a read_group on stock move lines and skips zero-stock day analysis for that window."
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_template__po_min_suggest_if_forecast_le_zero
+msgid "Suggest minimum purchase when forecast <= 0"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_template__po_min_suggest_if_forecast_le_zero
+msgid "If enabled, the purchase recommendation wizard will always propose at least 1 unit (or 1 full package when ordering by packages) when the forecasted stock is less or equal to 0."
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model_terms:ir.ui.view,arch_db:purchase_order_product_recommendation_supermarket.view_product_template_form_po_min_suggest
+msgid "Purchase Recommendation"
+msgstr ""
+
 #. module: purchase_order_product_recommendation_supermarket
 #: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation_line__units_avg_delivered_prev
 msgid "Average daily consumption during the previous period"
diff --git a/purchase_order_product_recommendation_supermarket/models/__init__.py b/purchase_order_product_recommendation_supermarket/models/__init__.py
new file mode 100644
index 0000000..e8fa8f6
--- /dev/null
+++ b/purchase_order_product_recommendation_supermarket/models/__init__.py
@@ -0,0 +1 @@
+from . import product_template
diff --git a/purchase_order_product_recommendation_supermarket/models/product_template.py b/purchase_order_product_recommendation_supermarket/models/product_template.py
new file mode 100644
index 0000000..e705777
--- /dev/null
+++ b/purchase_order_product_recommendation_supermarket/models/product_template.py
@@ -0,0 +1,10 @@
+from odoo import models, fields
+
+
+class ProductTemplate(models.Model):
+    _inherit = 'product.template'
+
+    po_min_suggest_if_forecast_le_zero = fields.Boolean(
+        string='Suggest minimum purchase when forecast <= 0',
+        help='If enabled, the purchase recommendation wizard will always propose at least 1 unit (or 1 full package when ordering by packages) when the forecasted stock is less or equal to 0.'
+    )
diff --git a/purchase_order_product_recommendation_supermarket/views/product_template_view.xml b/purchase_order_product_recommendation_supermarket/views/product_template_view.xml
new file mode 100644
index 0000000..4d241d2
--- /dev/null
+++ b/purchase_order_product_recommendation_supermarket/views/product_template_view.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <record id="view_product_template_form_po_min_suggest" model="ir.ui.view">
+        <field name="name">product.template.form.po.min.suggest</field>
+        <field name="model">product.template</field>
+        <field name="inherit_id" ref="product.product_template_form_view"/>
+        <field name="arch" type="xml">
+            <xpath expr="//group[@name='bill']" position="before">
+                <group string="Purchase Recommendation">
+                    <field name="po_min_suggest_if_forecast_le_zero"/>
+                </group>
+            </xpath>
+        </field>
+    </record>
+</odoo>
diff --git a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
index 6731a91..d8fd3c2 100644
--- a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
+++ b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
@@ -22,7 +22,7 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
     )
     include_previous_period = fields.Boolean(
         string="Include previous period stats",
-        default=True,
+        default=False,
         help="If disabled, the previous period (same number of days immediately preceding) is NOT queried. This saves a read_group on stock move lines and skips zero-stock day analysis for that window.",
     )
     total_days = fields.Integer(
@@ -181,6 +181,15 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
                 (self.order_days * res["units_avg_delivered"])
                 - res["units_virtual_available"],
             )
+
+        # Force a minimum suggested quantity when forecast <= 0 and product configured
+        # We apply this BEFORE packaging adjustment so packages logic can upscale it.
+        if (
+            product_id.po_min_suggest_if_forecast_le_zero
+            and res["units_virtual_available"] <= 0
+        ):
+            # If ordering by packages we later bump to one full package.
+            qty_to_order = max(qty_to_order, 1)
         res["units_included_original"] = qty_to_order
 
         # Adjust qty_to_order to packaging multiples if order_by_packages is checked

From 2c52a9f36e1f0a592b08b6c839417746dbfc72d4 Mon Sep 17 00:00:00 2001
From: luis <luis@criptomart.net>
Date: Mon, 6 Oct 2025 14:19:28 +0200
Subject: [PATCH 3/3] CriptoMart/red-supermercados-coop#1
 purchase_order_product_recommendation_supermarket: add cron to store periods
 out of stock in products. compute days without stock based on this new model

---
 .../__manifest__.py                           |   2 +
 .../data/stock_out_cron.xml                   |  15 +++
 .../i18n/es.po                                |  60 ++++++++++
 ...der_product_recommendation_supermarket.pot |  60 ++++++++++
 .../models/product_template.py                | 105 +++++++++++++++++-
 .../security/ir.model.access.csv              |   2 +
 .../views/product_template_view.xml           |  29 ++++-
 .../wizards/purchase_order_recommendation.py  |  33 +++---
 8 files changed, 285 insertions(+), 21 deletions(-)
 create mode 100644 purchase_order_product_recommendation_supermarket/data/stock_out_cron.xml
 create mode 100644 purchase_order_product_recommendation_supermarket/security/ir.model.access.csv

diff --git a/purchase_order_product_recommendation_supermarket/__manifest__.py b/purchase_order_product_recommendation_supermarket/__manifest__.py
index 6797bee..27a1a9b 100644
--- a/purchase_order_product_recommendation_supermarket/__manifest__.py
+++ b/purchase_order_product_recommendation_supermarket/__manifest__.py
@@ -10,8 +10,10 @@
     "website": "https://criptomart.net",
     "depends": ["purchase_order_product_recommendation"],
     "data": [
+        "security/ir.model.access.csv",
         "wizards/purchase_order_recommendation.xml",
         "views/product_template_view.xml",
+        "data/stock_out_cron.xml",
     ],
     "demo": [],
 }
diff --git a/purchase_order_product_recommendation_supermarket/data/stock_out_cron.xml b/purchase_order_product_recommendation_supermarket/data/stock_out_cron.xml
new file mode 100644
index 0000000..72843b6
--- /dev/null
+++ b/purchase_order_product_recommendation_supermarket/data/stock_out_cron.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="ir_cron_update_stock_out_periods" model="ir.cron">
+        <field name="name">Update Stock-out Periods</field>
+        <field name="model_id" ref="product.model_product_template"/>
+        <field name="state">code</field>
+        <field name="code">model.cron_update_stock_out_periods()</field>
+        <field name="user_id" ref="base.user_root"/>
+        <field name="active">True</field>
+        <field name="interval_number">1</field>
+        <field name="interval_type">days</field>
+        <field name="numbercall">-1</field>
+        <field name="doall">False</field>
+    </record>
+</odoo>
diff --git a/purchase_order_product_recommendation_supermarket/i18n/es.po b/purchase_order_product_recommendation_supermarket/i18n/es.po
index 937d6f4..b05b268 100644
--- a/purchase_order_product_recommendation_supermarket/i18n/es.po
+++ b/purchase_order_product_recommendation_supermarket/i18n/es.po
@@ -15,6 +15,66 @@ msgstr ""
 "Content-Transfer-Encoding: \n"
 "Plural-Forms: \n"
 
+#. module: purchase_order_product_recommendation_supermarket
+#: model_terms:ir.ui.view,arch_db:purchase_order_product_recommendation_supermarket.view_product_template_form_po_min_suggest
+msgid "Stock-out Periods"
+msgstr "Periodos sin stock"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_template__stock_out_period_ids
+msgid "Stock-out Periods"
+msgstr "Periodos sin stock"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__start_date
+msgid "Start Date"
+msgstr "Fecha inicio"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__end_date
+msgid "End Date"
+msgstr "Fecha fin"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__start_date
+msgid "First calendar day when the product had zero stock in this period."
+msgstr "Primer día (calendario) en el que el producto estuvo sin stock en este periodo."
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__end_date
+msgid "Last calendar day (inclusive) the product remained without stock in this period."
+msgstr "Último día (incluido) en el que el producto siguió sin stock en este periodo."
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__is_open
+msgid "Open"
+msgstr "Abierto"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__days_out
+msgid "Days without Stock"
+msgstr "Días sin stock"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__product_tmpl_id
+msgid "Product Template"
+msgstr "Plantilla de producto"
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__product_tmpl_id
+msgid "Product template this stock-out period belongs to."
+msgstr "Plantilla de producto a la que pertenece este periodo sin stock."
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__is_open
+msgid "Indicates the period is still ongoing (stock not yet restored)."
+msgstr "Indica que el periodo sigue en curso (el stock todavía no se ha recuperado)."
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__days_out
+msgid "Total number of calendar days (inclusive) without stock for this period."
+msgstr "Número total de días naturales (incluidos) sin stock durante este periodo."
+
 #. module: purchase_order_product_recommendation_supermarket
 #: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__include_previous_period
 msgid "Include previous period stats"
diff --git a/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot b/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot
index 0f5845f..c2dd1d3 100644
--- a/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot
+++ b/purchase_order_product_recommendation_supermarket/i18n/purchase_order_product_recommendation_supermarket.pot
@@ -15,6 +15,66 @@ msgstr ""
 "Content-Transfer-Encoding: \n"
 "Plural-Forms: \n"
 
+#. module: purchase_order_product_recommendation_supermarket
+#: model_terms:ir.ui.view,arch_db:purchase_order_product_recommendation_supermarket.view_product_template_form_po_min_suggest
+msgid "Stock-out Periods"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_template__stock_out_period_ids
+msgid "Stock-out Periods"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__start_date
+msgid "Start Date"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__end_date
+msgid "End Date"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__start_date
+msgid "First calendar day when the product had zero stock in this period."
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__end_date
+msgid "Last calendar day (inclusive) the product remained without stock in this period."
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__is_open
+msgid "Open"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__days_out
+msgid "Days without Stock"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__product_tmpl_id
+msgid "Product Template"
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__product_tmpl_id
+msgid "Product template this stock-out period belongs to."
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__is_open
+msgid "Indicates the period is still ongoing (stock not yet restored)."
+msgstr ""
+
+#. module: purchase_order_product_recommendation_supermarket
+#: model:ir.model.fields,help:purchase_order_product_recommendation_supermarket.field_product_stock_out_period__days_out
+msgid "Total number of calendar days (inclusive) without stock for this period."
+msgstr ""
+
 #. module: purchase_order_product_recommendation_supermarket
 #: model:ir.model.fields,field_description:purchase_order_product_recommendation_supermarket.field_purchase_order_recommendation__include_previous_period
 msgid "Include previous period stats"
diff --git a/purchase_order_product_recommendation_supermarket/models/product_template.py b/purchase_order_product_recommendation_supermarket/models/product_template.py
index e705777..f97150d 100644
--- a/purchase_order_product_recommendation_supermarket/models/product_template.py
+++ b/purchase_order_product_recommendation_supermarket/models/product_template.py
@@ -1,10 +1,107 @@
-from odoo import models, fields
+from odoo import models, fields, api
+from datetime import date
 
 
 class ProductTemplate(models.Model):
-    _inherit = 'product.template'
+    _inherit = "product.template"
 
     po_min_suggest_if_forecast_le_zero = fields.Boolean(
-        string='Suggest minimum purchase when forecast <= 0',
-        help='If enabled, the purchase recommendation wizard will always propose at least 1 unit (or 1 full package when ordering by packages) when the forecasted stock is less or equal to 0.'
+        string="Suggest minimum purchase when forecast <= 0",
+        help="If enabled, the purchase recommendation wizard will always propose at least 1 unit (or 1 full package when ordering by packages) when the forecasted stock is less or equal to 0.",
     )
+
+    stock_out_period_ids = fields.One2many(
+        "product.stock.out.period",
+        "product_tmpl_id",
+        string="Stock-out Periods",
+        help="Historical periods where this product had zero stock (qty_available <= 0).",
+    )
+
+    def cron_update_stock_out_periods(self):
+        """Scheduled every night: detect products currently without stock and
+        update (or create) an open stock-out period. While a period is open:
+          - end_date is kept updated each day with today's date
+          - days_out reflects (end_date - start_date).days
+        When stock returns the period is marked closed (is_open=False) but end_date
+        keeps the last day without stock (previous day if we consider stock restored today).
+        """
+        # Consider only storable products
+        products = self.search([("type", "=", "product")])
+        today = date.today()
+        # Prefetch qty_available efficiently (framework batches reads)
+        for product in products:
+            qty = product.qty_available
+            open_period = product.stock_out_period_ids.filtered(lambda p: p.is_open)[:1]
+            if qty <= 0:
+                if open_period:
+                    # Refresh end_date to today (still open)
+                    if open_period.end_date != today:
+                        open_period.end_date = today
+                        open_period._compute_days_out()
+                else:
+                    self.env["product.stock.out.period"].create(
+                        {
+                            "product_tmpl_id": product.id,
+                            "start_date": today,
+                            "end_date": today,
+                            "is_open": True,
+                        }
+                    )
+            else:
+                if open_period:
+                    # Close period: stock restored today -> last day without stock was yesterday
+                    # We set end_date to max(start_date, today - 1) to avoid negative spans.
+                    from datetime import timedelta
+
+                    closed_end = max(open_period.start_date, today - timedelta(days=1))
+                    if open_period.end_date != closed_end:
+                        open_period.end_date = closed_end
+                    open_period.is_open = False
+                    open_period._compute_days_out()
+
+
+class ProductStockOutPeriod(models.Model):
+    _name = "product.stock.out.period"
+    _description = "Product Stock-out Period"
+    _order = "start_date desc"
+
+    product_tmpl_id = fields.Many2one(
+        "product.template",
+        required=True,
+        ondelete="cascade",
+        index=True,
+        string="Product Template",
+        help="Product template this stock-out period belongs to.",
+    )
+    start_date = fields.Date(
+        required=True,
+        index=True,
+        string="Start Date",
+        help="First calendar day when the product had zero stock in this period.",
+    )
+    end_date = fields.Date(
+        index=True,
+        string="End Date",
+        help="Last calendar day (inclusive) the product remained without stock in this period.",
+    )
+    is_open = fields.Boolean(
+        string="Open",
+        default=False,
+        index=True,
+        help="Indicates the period is still ongoing (stock not yet restored).",
+    )
+    days_out = fields.Integer(
+        string="Days without Stock",
+        compute="_compute_days_out",
+        store=True,
+        help="Total number of calendar days (inclusive) without stock for this period.",
+    )
+
+    @api.depends("start_date", "end_date", "is_open")
+    def _compute_days_out(self):
+        for rec in self:
+            if rec.start_date and rec.end_date:
+                # Inclusive count of days (both start and end)
+                rec.days_out = (rec.end_date - rec.start_date).days + 1
+            else:
+                rec.days_out = 0
diff --git a/purchase_order_product_recommendation_supermarket/security/ir.model.access.csv b/purchase_order_product_recommendation_supermarket/security/ir.model.access.csv
new file mode 100644
index 0000000..15f0899
--- /dev/null
+++ b/purchase_order_product_recommendation_supermarket/security/ir.model.access.csv
@@ -0,0 +1,2 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_product_stock_out_period_user,access.product.stock.out.period.user,model_product_stock_out_period,base.group_user,1,0,0,0
diff --git a/purchase_order_product_recommendation_supermarket/views/product_template_view.xml b/purchase_order_product_recommendation_supermarket/views/product_template_view.xml
index 4d241d2..09d2982 100644
--- a/purchase_order_product_recommendation_supermarket/views/product_template_view.xml
+++ b/purchase_order_product_recommendation_supermarket/views/product_template_view.xml
@@ -5,10 +5,31 @@
         <field name="model">product.template</field>
         <field name="inherit_id" ref="product.product_template_form_view"/>
         <field name="arch" type="xml">
-            <xpath expr="//group[@name='bill']" position="before">
-                <group string="Purchase Recommendation">
-                    <field name="po_min_suggest_if_forecast_le_zero"/>
-                </group>
+            <xpath expr="//notebook" position="inside">
+                <page string="Purchase Recommendation">
+                    <group>
+                        <field name="po_min_suggest_if_forecast_le_zero"/>
+                    </group>
+                    <group string="Stock-out Periods">
+                        <field name="stock_out_period_ids" context="{'default_product_tmpl_id': active_id}">
+                            <tree editable="bottom">
+                                <field name="start_date"/>
+                                <field name="end_date"/>
+                                <field name="days_out"/>
+                                <field name="is_open"/>
+                            </tree>
+                            <form>
+                                <group>
+                                    <field name="product_tmpl_id"/>
+                                    <field name="start_date"/>
+                                    <field name="end_date"/>
+                                    <field name="days_out"/>
+                                    <field name="is_open"/>
+                                </group>
+                            </form>
+                        </field>
+                    </group>
+                </page>
             </xpath>
         </field>
     </record>
diff --git a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
index d8fd3c2..cc65484 100644
--- a/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
+++ b/purchase_order_product_recommendation_supermarket/wizards/purchase_order_recommendation.py
@@ -254,24 +254,31 @@ class PurchaseOrderRecommendationSupermarketWizard(models.TransientModel):
                 line.unlink()
 
     def _get_days_out_of_stock(self, product):
+        """Compute days without stock using precomputed periods (product.stock.out.period).
+
+        A day is counted if it belongs to any stored stock-out period overlapping
+        the target window [date_from, date_to]. The period model stores end_date daily
+        (or closure day).
         """
-        Returns the number of days between date_begin and date_end
-        where the given product had zero or negative stock (qty_available).
-        """
-        days_out_of_stock = 0
         date_from = self.env.context.get("period_date_begin", self.date_begin)
         date_to = self.env.context.get("period_date_end", self.date_end)
         if not date_from or not date_to:
             return 0
-        # Loop through each day in the range
-        for n in range((date_to - date_from).days + 1):
-            day = date_from + timedelta(days=n)
-            qty = product.with_context(
-                to_date=datetime.combine(day, time(23, 59, 59))
-            ).qty_available
-            if qty <= 0:
-                days_out_of_stock += 1
-        return days_out_of_stock
+        # Access template periods (product may be product.product or product.template)
+        product_tmpl = (
+            product.product_tmpl_id if hasattr(product, "product_tmpl_id") else product
+        )
+        periods = product_tmpl.stock_out_period_ids
+        total = 0
+        for p in periods:
+            if not p.start_date or not p.end_date:
+                continue
+            # Overlap window
+            start = max(p.start_date, date_from)
+            end = min(p.end_date, date_to)
+            if start <= end:
+                total += (end - start).days
+        return total
 
     def _get_products(self):
         """Overwrite because filter by cateogory is not working in the base method."""