upd

customer_mail_reply_stage/README.rst

@@ -0,0 +1,104 @@
+=========================
+Customer Mail Reply Stage
+=========================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:3e0a708a7c69ddc0f3b1222b5c268d8d6acc6f32c6de186e7c9a5df995a98bb3
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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%2Fsocial-lightgray.png?logo=github
+    :target: https://github.com/OCA/social/tree/15.0/customer_mail_reply_stage
+    :alt: OCA/social
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/social-15-0/social-15-0-customer_mail_reply_stage
+    :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/social&target_branch=15.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module serves as a base for automatically updating the stage of a record when a non-internal user replies.
+It controls stage updates based on a parent-child relationship, where the reply stage is defined at the parent model level and applied to its child records.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Configuration
+=============
+
+You need to configure your model when creating submodules:
+
+1. Navigate to Settings > Technical > Models.
+2. Locate the model and enable the Use Reply Stage option.
+
+Usage
+=====
+
+An example for a submodule called `module_name` for a model:
+
+A python class ::
+
+    from odoo import models
+
+    class ModelName(models.Model):
+        _inheirt = 'model_name'
+
+        def _remain_state_field(self):
+            return 'stage_field_name'
+        
+        def _remain_state_value(self):
+            return "state_value"
+
+        def _parent_field(self):
+            return 'parent_field_name'
+
+        def _reply_stage_field(self):
+            return 'reply_stage_field_name'
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/social/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/social/issues/new?body=module:%20customer_mail_reply_stage%0Aversion:%2015.0%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
+~~~~~~~
+
+* Quartile
+
+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.
+
+This module is part of the `OCA/social <https://github.com/OCA/social/tree/15.0/customer_mail_reply_stage>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

customer_mail_reply_stage/__manifest__.py

@@ -2,11 +2,12 @@
 # License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
 {
     "name": "Customer Mail Reply Stage",
-    "category": "Tools",
+    "category": "Mail",
     "version": "15.0.1.0.0",
-    "author": "Quartile Limited",
-    "website": "https://www.quartile.co",
+    "author": "Quartile, Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/social",
     "license": "AGPL-3",
     "depends": ["mail"],
+    "data": ["views/ir_model_views.xml"],
     "installable": True,
 }

customer_mail_reply_stage/models/__init__.py

@@ -1 +1,2 @@
+from . import ir_model
 from . import mail_message

customer_mail_reply_stage/models/ir_model.py

@@ -0,0 +1,12 @@
+# Copyright 2025 Quartile Limited
+# License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl).
+
+from odoo import fields, models
+
+
+class IrModel(models.Model):
+    _inherit = "ir.model"
+
+    use_reply_stage = fields.Boolean(
+        help="If enabled, the reply stage feature will be activated for this model."
+    )

customer_mail_reply_stage/models/mail_message.py

@@ -1,5 +1,5 @@
 # Copyright 2025 Quartile Limited
-# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+# License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl).
 
 from odoo import api, models
 
@@ -11,42 +11,39 @@ class MailMessage(models.Model):
     def create(self, values_list):
         messages = super().create(values_list)
         for message in messages:
-            res_model = self.env['ir.model'].sudo().search([('model', '=', message.model)], limit=1)
+            res_model = (
+                self.env["ir.model"]
+                .sudo()
+                .search([("model", "=", message.model)], limit=1)
+            )
             if not res_model.use_reply_stage:
                 continue
-            if not (
-                message.subtype_id
-                and not message.subtype_id.internal
-            ):
+            if not (message.subtype_id and not message.subtype_id.internal):
                 continue
             resource = self.env[message.model].browse(message.res_id)
-            if getattr(resource, resource._remain_state_field()) == resource._remain_state_value():
+            if (
+                getattr(resource, resource._remain_state_field())
+                == resource._remain_state_value()
+            ):
                 continue
             user = message.author_id.user_ids[:1]
             if user and user.has_group("base.group_user"):
                 continue
             parent = resource[resource._parent_field()]
             reply_stage = getattr(parent, resource._reply_stage_field())
             if reply_stage:
-                resource.sudo().write({'stage_id': reply_stage.id})
+                resource.sudo().write({"stage_id": reply_stage.id})
                 continue
-            reply_stage_id = int(
-                self.env["ir.config_parameter"]
-                .sudo()
-                .get_param(resource._config_key(), 0)
-            )
-            if reply_stage_id in getattr(parent, 'type_ids').ids:
-                resource.sudo().write({'stage_id': reply_stage_id})
         return messages
-    
+
     def _resource_model(self):
         """Override this method in child models to specify the model name."""
         raise NotImplementedError("Subclasses must implement `_resource_model`.")
 
     def _remain_state_field(self):
         """Override this method in child models to specify the remain state."""
         raise NotImplementedError("Subclasses must implement `_remain_state_field`.")
-    
+
     def _remain_state_value(self):
         """Override this method in child models to specify the remain state value."""
         raise NotImplementedError("Subclasses must implement `_remain_state_value`.")
@@ -58,7 +55,3 @@ def _reply_stage_field(self):
     def _parent_field(self):
         """Override this method in child models to specify the parent field name."""
         raise NotImplementedError("Subclasses must implement `_parent_field`.")
-
-    def _config_key(self):
-        """Override this method in child models to specify the config parameter key."""
-        raise NotImplementedError("Subclasses must implement `_config_key`.")

customer_mail_reply_stage/readme/CONFIGURE.rst

@@ -0,0 +1,4 @@
+You need to configure your model when creating submodules:
+
+1. Navigate to Settings > Technical > Models.
+2. Locate the model and enable the Use Reply Stage option.

customer_mail_reply_stage/readme/DESCRIPTION.rst

@@ -0,0 +1,2 @@
+This module serves as a base for automatically updating the stage of a record when a non-internal user replies.
+It controls stage updates based on a parent-child relationship, where the reply stage is defined at the parent model level and applied to its child records.

customer_mail_reply_stage/readme/USAGE.rst

@@ -0,0 +1,20 @@
+An example for a submodule called `module_name` for a model:
+
+A python class ::
+
+    from odoo import models
+
+    class ModelName(models.Model):
+        _inheirt = 'model_name'
+
+        def _remain_state_field(self):
+            return 'stage_field_name'
+        
+        def _remain_state_value(self):
+            return "state_value"
+
+        def _parent_field(self):
+            return 'parent_field_name'
+
+        def _reply_stage_field(self):
+            return 'reply_stage_field_name'