[IMP] mass_mailing: allow users to choose a specific outgoing mail server

Purpose of this commit is to allow mass mailing users to select an outgoing
mail sever when performing mass mailing. It includes

* add a field in mass_mailing to select specific outgoing mail server;
  it is put in debug mode because it sounds people would not understand
  what is its purpose;
* add an option in settings to set a default outgoing mail server;
* give read access to ir.mail_server to mass_mailing users;

This commit is related to task ID 31737.

addons/mass_mailing/models/mass_mailing.py

@@ -6,6 +6,7 @@ import hmac
 import logging
 import random
 import threading
+from ast import literal_eval
 
 from odoo import api, fields, models, tools, _
 from odoo.exceptions import UserError
@@ -360,6 +361,15 @@ class MassMailing(models.Model):
     _inherits = {'utm.source': 'source_id'}
     _rec_name = "source_id"
 
+    @api.model
+    def _get_default_mail_server_id(self):
+        server_id = self.env['ir.config_parameter'].sudo().get_param('mass_mailing.mail_server_id')
+        try:
+            server_id = literal_eval(server_id) if server_id else False
+            return self.env['ir.mail_server'].search([('id', '=', server_id)]).id
+        except ValueError:
+            return False
+
     @api.model
     def default_get(self, fields):
         res = super(MassMailing, self).default_get(fields)
@@ -403,6 +413,9 @@ class MassMailing(models.Model):
         default=lambda self: self.env.ref('mass_mailing.model_mail_mass_mailing_list').id)
     mailing_model_name = fields.Char(related='mailing_model_id.model', string='Recipients Model Name', readonly=True, related_sudo=True)
     mailing_domain = fields.Char(string='Domain', oldname='domain', default=[])
+    mail_server_id = fields.Many2one('ir.mail_server', string='Mail Server',
+        default=_get_default_mail_server_id,
+        help="Use a specific mail server in priority. Otherwise Odoo relies on the first outgoing mail server available (based on their sequencing) as it does for normal mails.")
     contact_list_ids = fields.Many2many('mail.mass_mailing.list', 'mail_mass_mailing_list_rel',
         string='Mailing Lists')
     contact_ab_pc = fields.Integer(string='A/B Testing percentage',
@@ -760,6 +773,7 @@ class MassMailing(models.Model):
                 'mass_mailing_id': mailing.id,
                 'mailing_list_ids': [(4, l.id) for l in mailing.contact_list_ids],
                 'no_auto_thread': mailing.reply_to_mode != 'thread',
+                'mail_server_id': mailing.mail_server_id.id,
             }
             if mailing.reply_to_mode == 'email':
                 composer_values['reply_to'] = mailing.reply_to

addons/mass_mailing/models/res_config_settings.py

@@ -1,10 +1,18 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import fields, models
+from odoo import api, fields, models
 
 
 class ResConfigSettings(models.TransientModel):
     _inherit = 'res.config.settings'
 
     group_mass_mailing_campaign = fields.Boolean(string="Mass Mailing Campaigns", implied_group='mass_mailing.group_mass_mailing_campaign', help="""This is useful if your marketing campaigns are composed of several emails""")
+    mass_mailing_outgoing_mail_server = fields.Boolean(string="Specific Mail Server", config_parameter='mass_mailing.outgoing_mail_server',
+        help='Use a specific mail server in priority. Otherwise Odoo relies on the first outgoing mail server available (based on their sequencing) as it does for normal mails.')
+    mass_mailing_mail_server_id = fields.Many2one('ir.mail_server', string='Mail Server', config_parameter='mass_mailing.mail_server_id')
+
+    @api.onchange('mass_mailing_outgoing_mail_server')
+    def _onchange_mass_mailing_outgoing_mail_server(self):
+        if not self.mass_mailing_outgoing_mail_server:
+            self.mass_mailing_mail_server_id = False

addons/mass_mailing/security/ir.model.access.csv

@@ -10,4 +10,5 @@ access_mass_mailing_system,mail.mass_mailing.system,model_mail_mass_mailing,base
 access_mail_mail_statistics_user,mail.mail.statistics,model_mail_mail_statistics,base.group_user,1,1,1,1
 access_mail_mail_statistics_mass_mailing_user,mail.mail.statistics,model_mail_mail_statistics,mass_mailing.group_mass_mailing_user,1,1,1,1
 access_mail_statistics_report,mail.statistics.report,model_mail_statistics_report,mass_mailing.group_mass_mailing_user,1,1,1,1
-access_utm_source,access_utm_source,utm.model_utm_source,mass_mailing.group_mass_mailing_user,1,1,1,0
+access_utm_source,access_utm_source,utm.model_utm_source,mass_mailing.group_mass_mailing_user,1,1,1,0
+access_ir_mail_server,access_ir_mail_server,base.model_ir_mail_server,mass_mailing.group_mass_mailing_user,1,0,0,0

addons/mass_mailing/views/mass_mailing_views.xml

@@ -531,6 +531,7 @@
                                         <div>
                                             <field name="attachment_ids"  widget="many2many_binary" string="Attach a file" class="oe_inline"/>
                                         </div>
+                                        <field name="mail_server_id" groups="base.group_no_one" options="{'no_create': True, 'no_open': True}"/>
                                         <field name="schedule_date" />
                                         <field name="keep_archives" groups="base.group_no_one"/>
                                         <field name="create_date" readonly="1" attrs="{'invisible': [('create_date', '=', False)]}"/>

addons/mass_mailing/views/res_config_settings_views.xml

@@ -28,6 +28,22 @@
                                     </div>
                                 </div>
                             </div>
+                            <div class="col-md-6 o_setting_box col-xs-12">
+                                <div class="o_setting_left_pane" title="Use a specific mail server in priority. Otherwise Odoo relies on the first outgoing mail server available (based on their sequencing) as it does for normal mails.">
+                                    <field name="mass_mailing_outgoing_mail_server"/>
+                                </div>
+                                <div class="o_setting_right_pane">
+                                    <label for="mass_mailing_outgoing_mail_server"/>
+                                    <div class="text-muted">
+                                        Use a specific mail server for mailings
+                                    </div>
+                                    <div class="content-group" attrs="{'invisible': [('mass_mailing_outgoing_mail_server', '=', False)]}">
+                                        <div class="mt16">
+                                            <field name="mass_mailing_mail_server_id" options="{'no_create': True, 'no_open': True}"/>
+                                        </div>
+                                    </div>
+                                </div>
+                            </div>
                         </div>
                         <h2>Mailing Lists</h2>
                         <div id="mailing_list" class="row mt16 o_settings_container"/>