[16.0][ADD] sale_product_email : Sending a mail on order confirmation for a given product

sale_product_email/README.rst

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+.. image:: https://odoo-community.org/readme-banner-image
+   :target: https://odoo-community.org/get-involved?utm_source=readme
+   :alt: Odoo Community Association
+
+==================
+Sale product email
+==================
+
+.. 
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! source digest: sha256:543561d513d5b13661ca3257405c8cc5a94ae0e9259c84c1b9c4141df5a02618
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |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/license-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--workflow-lightgray.png?logo=github
+    :target: https://github.com/OCA/sale-workflow/tree/16.0/sale_product_email
+    :alt: OCA/sale-workflow
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/sale-workflow-16-0/sale-workflow-16-0-sale_product_email
+    :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-workflow&target_branch=16.0
+    :alt: Try me on Runboat
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This module adds an optional email template to products.
+When a sale is confirmed, a single mail will be sent for each product with the mail template set in the 'Sale confirmation email' (`sale_confirmation_mail_template_id`) field.
+
+This module differs from `product_email_template`, as it sends a mail when an invoice is posted, whereas this module sends a mail when a sale order is confirmed.
+As such, depending on your workflow, you may pick either module for the email timing you require.
+For instance, if a sale order leads to a contract which generates invoices recurrently, you may prefer to only send a mail when the sale order is confirmed.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+How to use this module : 
+
+1. Create an Email template for the Sale Order (`sale.order`) model.
+2. Edit a product, then go into the 'Sales' notebook tab.
+3. In the 'Sale confirmation email' field, select your newly created email template.
+
+Afterwards, when this product is present in a confirmed sale, a mail based on the configured template will be sent.
+
+.. image:: https://raw.githubusercontent.com/sale_product_email/static/description/mail_template_select.png
+    :alt: Mail template selection on a Product
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/sale-workflow/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-workflow/issues/new?body=module:%20sale_product_email%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
+~~~~~~~
+
+* Commown SCIC
+* Akretion
+
+Contributors
+~~~~~~~~~~~~
+
+* Florent Cayré <florent@commown.coop>
+* Chafique Delli <chafique.delli@akretion.com>
+
+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/sale-workflow <https://github.com/OCA/sale-workflow/tree/16.0/sale_product_email>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

sale_product_email/__init__.py

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+from . import models

sale_product_email/__manifest__.py

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+# Copyright 2022-today Commown SCIC (https://commown.coop)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+{
+    "name": "Sale product email",
+    "category": "Sales",
+    "summary": "Send a product-specific email to its buyers",
+    "version": "16.0.1.0.0",
+    "author": "Commown SCIC, Akretion, Odoo Community Association (OCA)",
+    "license": "AGPL-3",
+    "website": "https://github.com/OCA/sale-workflow",
+    "data": [
+        "views/product_template.xml",
+    ],
+    "depends": [
+        "sale",
+    ],
+    "installable": True,
+}

sale_product_email/models/__init__.py

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+from . import product_template
+from . import sale_order

sale_product_email/models/product_template.py

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+# Copyright 2022-today Commown SCIC (https://commown.coop)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import fields, models
+
+
+class ProductTemplate(models.Model):
+    _inherit = "product.template"
+
+    sale_confirmation_mail_template_id = fields.Many2one(
+        "mail.template",
+        string="Sale confirmation email",
+        domain=lambda self: [
+            ("model_id", "=", self.env.ref("sale.model_sale_order").id),
+        ],
+        help=("If set, this email will be sent to the buyer on sale" " confirmation"),
+    )

sale_product_email/models/sale_order.py

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+# Copyright 2022-today Commown SCIC (https://commown.coop)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import models
+
+
+class SaleOrder(models.Model):
+    _inherit = "sale.order"
+
+    def action_confirm(self):
+        res = super().action_confirm()
+        self.send_sold_products_mail()
+        return res
+
+    def send_sold_products_mail(self):
+        for order in self:
+            for line in order.order_line:
+                product_tmpl = line.product_id.product_tmpl_id
+                mail_template = product_tmpl.sale_confirmation_mail_template_id
+                if mail_template:
+                    order.with_context(
+                        product_tmpl=product_tmpl,
+                        default_composition_mode="comment",
+                        default_partner_ids=order.partner_id.ids,
+                        custom_layout="sale.email_template_edi_sale",
+                    ).message_post_with_template(mail_template.id)

sale_product_email/readme/CONTRIBUTORS.rst

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+* Florent Cayré <florent@commown.coop>
+* Chafique Delli <chafique.delli@akretion.com>

sale_product_email/readme/DESCRIPTION.rst

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+This module adds an optional email template to products.
+When a sale is confirmed, a single mail will be sent for each product with the mail template set in the 'Sale confirmation email' (`sale_confirmation_mail_template_id`) field.
+
+This module differs from `product_email_template`, as it sends a mail when an invoice is posted, whereas this module sends a mail when a sale order is confirmed.
+As such, depending on your workflow, you may pick either module for the email timing you require.
+For instance, if a sale order leads to a contract which generates invoices recurrently, you may prefer to only send a mail when the sale order is confirmed.

sale_product_email/readme/USAGE.rst

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+How to use this module : 
+
+1. Create an Email template for the Sale Order (`sale.order`) model.
+2. Edit a product, then go into the 'Sales' notebook tab.
+3. In the 'Sale confirmation email' field, select your newly created email template.
+
+Afterwards, when this product is present in a confirmed sale, a mail based on the configured template will be sent.
+
+.. image:: /sale_product_email/static/description/mail_template_select.png
+    :alt: Mail template selection on a Product