[IMP] point_of_sale: improve consistencies between models

The deletion of some records can create inconsistencies in the
point_of_sale.

It can create inconsistencies when a session is open, for example if you
delete a partner that can be set on a pos order. You'll also got
problems if you remove an employee and this employee can be used in an
open session.

We also avoid to get point_of_sale config inconsistencies, by deleting
models required by it. If you delete a picking type used in a pos
config or a sequence.

To avoid all this consistencies, we have restricted the deletion of some
records in specific cases.

TASK-ID: 1879971

closes odoo/odoo#35793

Signed-off-by: pimodoo <pimodoo@users.noreply.github.com>

6 files changed, 55 insertions, 8 deletions

diff --git a/addons/account/models/account.py b/addons/account/models/account.py
index 05b858688b2..69c5d290e71 100644
--- a/addons/account/models/account.py
+++ b/addons/account/models/account.py
@@ -555,9 +555,10 @@ class AccountJournal(models.Model):
     account_control_ids = fields.Many2many('account.account', 'account_account_type_rel', 'journal_id', 'account_id', string='Accounts Allowed',
         domain="[('deprecated', '=', False), ('company_id', '=', company_id)]")
     default_credit_account_id = fields.Many2one('account.account', string='Default Credit Account',
-        domain=[('deprecated', '=', False)], help="It acts as a default account for credit amount")
+        domain=[('deprecated', '=', False)], help="It acts as a default account for credit amount",
+        ondelete='restrict')
     default_debit_account_id = fields.Many2one('account.account', string='Default Debit Account',
-        domain="[('deprecated', '=', False), ('company_id', '=', company_id)]", help="It acts as a default account for debit amount")
+        domain="[('deprecated', '=', False), ('company_id', '=', company_id)]", help="It acts as a default account for debit amount", ondelete='restrict')
     update_posted = fields.Boolean(string='Allow Cancelling Entries',
         help="Check this box if you want to allow the cancellation the entries related to this journal or of the invoice related to this journal")
     sequence_id = fields.Many2one('ir.sequence', string='Entry Sequence',
diff --git a/addons/point_of_sale/models/pos_config.py b/addons/point_of_sale/models/pos_config.py
index 247c4e1d008..0ba6baa7d1e 100644
--- a/addons/point_of_sale/models/pos_config.py
+++ b/addons/point_of_sale/models/pos_config.py
@@ -104,7 +104,8 @@ class PosConfig(models.Model):
         'stock.picking.type',
         string='Operation Type',
         default=_default_picking_type_id,
-        domain="[('code', '=', 'outgoing'), ('warehouse_id.company_id', '=', company_id)]")
+        domain="[('code', '=', 'outgoing'), ('warehouse_id.company_id', '=', company_id)]",
+        ondelete='restrict')
     use_existing_lots = fields.Boolean(related='picking_type_id.use_existing_lots', readonly=False)
     journal_id = fields.Many2one(
         'account.journal', string='Sales Journal',
@@ -150,7 +151,7 @@ class PosConfig(models.Model):
         help='A globally unique identifier for this pos configuration, used to prevent conflicts in client-generated data.')
     sequence_id = fields.Many2one('ir.sequence', string='Order IDs Sequence', readonly=True,
         help="This sequence is automatically created by Odoo but you can change it "
-        "to customize the reference numbers of your orders.", copy=False)
+        "to customize the reference numbers of your orders.", copy=False, ondelete='restrict')
     sequence_line_id = fields.Many2one('ir.sequence', string='Order Line IDs Sequence', readonly=True,
         help="This sequence is automatically created by Odoo but you can change it "
         "to customize the reference numbers of your orders lines.", copy=False)
diff --git a/addons/point_of_sale/models/pos_session.py b/addons/point_of_sale/models/pos_session.py
index a6885c3205d..0f200cf971d 100644
--- a/addons/point_of_sale/models/pos_session.py
+++ b/addons/point_of_sale/models/pos_session.py
@@ -37,7 +37,8 @@ class PosSession(models.Model):
         index=True,
         readonly=True,
         states={'opening_control': [('readonly', False)]},
-        default=lambda self: self.env.uid)
+        default=lambda self: self.env.uid,
+        ondelete='restrict')
     currency_id = fields.Many2one('res.currency', related='config_id.currency_id', string="Currency", readonly=False)
     start_at = fields.Datetime(string='Opening Date', readonly=True)
     stop_at = fields.Datetime(string='Closing Date', readonly=True, copy=False)
diff --git a/addons/point_of_sale/models/res_partner.py b/addons/point_of_sale/models/res_partner.py
index 94f0eaa1ff5..62ff126c72a 100644
--- a/addons/point_of_sale/models/res_partner.py
+++ b/addons/point_of_sale/models/res_partner.py
@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
-from odoo import api, fields, models
+from odoo import api, fields, models, _
+from odoo.exceptions import UserError
 
 
 class ResPartner(models.Model):
@@ -38,3 +39,12 @@ class ResPartner(models.Model):
             partner['lang'] = self.env.user.lang
             partner_id = self.create(partner).id
         return partner_id
+
+    def unlink(self):
+        running_sessions = self.env['pos.session'].search([('state', '!=', 'closed')])
+        if running_sessions:
+            raise UserError(
+                _("You cannot delete contacts while there are active PoS sessions. Close the session(s) %s first.")
+                % ", ".join(session.name for session in running_sessions)
+            )
+        return super(ResPartner, self).unlink()
diff --git a/addons/pos_hr/models/hr_employee.py b/addons/pos_hr/models/hr_employee.py
index fc5a3f9b154..5ad415c2f11 100644
--- a/addons/pos_hr/models/hr_employee.py
+++ b/addons/pos_hr/models/hr_employee.py
@@ -3,7 +3,8 @@
 
 import hashlib
 
-from odoo import api, models
+from odoo import api, models, _
+from odoo.exceptions import UserError
 
 class HrEmployee(models.Model):
 
@@ -20,3 +21,17 @@ class HrEmployee(models.Model):
             e['barcode'] = hashlib.sha1(e['barcode'].encode('utf8')).hexdigest() if e['barcode'] else False
             e['pin'] = hashlib.sha1(e['pin'].encode('utf8')).hexdigest() if e['pin'] else False
         return employees_data
+
+    def unlink(self):
+        configs_with_employees = self.env['pos.config'].search([('module_pos_hr', '=', 'True')]).filtered(lambda c: c.current_session_id)
+        configs_with_all_employees = configs_with_employees.filtered(lambda c: not c.employee_ids)
+        configs_with_specific_employees = configs_with_employees.filtered(lambda c: c.employee_ids & self)
+        if configs_with_all_employees or configs_with_specific_employees:
+            error_msg = _("You cannot delete an employee that may be used in an active PoS session, close the session(s) first: \n")
+            for employee in self:
+                config_ids = configs_with_all_employees | configs_with_specific_employees.filtered(lambda c: employee in c.employee_ids)
+                if config_ids:
+                    error_msg += _("Employee: %s - PoS Config(s): %s \n") % (employee.name, ', '.join(config.name for config in config_ids))
+
+            raise UserError(error_msg)
+        return super(HrEmployee, self).unlink()
diff --git a/addons/pos_restaurant/models/pos_restaurant.py b/addons/pos_restaurant/models/pos_restaurant.py
index ea5c3a04d5b..e89180f9158 100644
--- a/addons/pos_restaurant/models/pos_restaurant.py
+++ b/addons/pos_restaurant/models/pos_restaurant.py
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
-from odoo import api, fields, models
+from odoo import api, fields, models, _
+from odoo.exceptions import UserError
 
 
 class RestaurantFloor(models.Model):
@@ -16,6 +17,24 @@ class RestaurantFloor(models.Model):
     table_ids = fields.One2many('restaurant.table', 'floor_id', string='Tables', help='The list of tables in this floor')
     sequence = fields.Integer('Sequence', help='Used to sort Floors', default=1)
 
+    def unlink(self):
+        confs = self.env['pos.session'].search([
+            ('state', '!=', 'closed'),
+            ('config_id.is_table_management', '=', True)
+        ]).mapped('config_id')
+        if confs:
+            error_msg = _("You cannot remove a floor that is used in a PoS session, close the session(s) first: \n")
+            for floor in self:
+                for config in confs:
+                    if floor in config.floor_ids:
+                        error_msg += _("Floor: %s - PoS Config: %s \n") % (floor.name, config.name)
+            if confs:
+                raise UserError(error_msg)
+        return super(RestaurantFloor, self).unlink()
+
+    def _check_pos_sessions(self, error_msg):
+        import pudb; pudb.set_trace()
+
 
 class RestaurantTable(models.Model):