[FIX] stock : prevent creating sequences with same code

Issue:
======
You can create the same sequence with the same code

Steps to reproduce the error:
=============================
- Install inventory and activate storage locations
- Go to inventory/configuration/Operations Types
- Create 2 operation typs with the following values:
name :any random name , type of Operations : internal transfer,
sequence prefix : test , locations as WH/Stock
- Go to sequences and search for test
- You will have 2 duplicate sequences with the same values

Origin of the problem :
=======================
- Creating an operation type always creates atuomatically a sequences if
  the sequence_code is provided but the sequence_id isn't.

Solution:
=========
Display an error when the name already exist.

opw-3238331

closes odoo/odoo#132982

X-original-commit: e1f9480c7aa2a982d828ffd0fbc032e4066089d4
Signed-off-by: William Henrotin (whe) <whe@odoo.com>
Signed-off-by: Mahdi Cheikh Rouhou (macr) <macr@odoo.com>

addons/stock/i18n/stock.pot

@@ -7134,6 +7134,13 @@ msgstr ""
 msgid "Sequence return"
 msgstr ""
 
+#. module: stock
+#. odoo-python
+#: code:addons/stock/models/stock_picking.py:0
+#, python-format
+msgid "Sequences %s already exist."
+msgstr ""
+
 #. module: stock
 #: model:ir.model.fields,field_description:stock.field_stock_move__lot_ids
 msgid "Serial Numbers"

addons/stock/models/stock_picking.py

@@ -273,6 +273,18 @@ class PickingType(models.Model):
         for record in self:
             record.show_picking_type = record.code in ['incoming', 'outgoing', 'internal']
 
+    @api.constrains('sequence_id')
+    def _check_sequence_code(self):
+        domain = expression.OR([[('company_id', '=', record.company_id.id), ('name', '=', record.sequence_id.name)]
+                                for record in self])
+        record_counts = self.env['ir.sequence'].read_group(
+            domain, ['company_id', 'name'], ['company_id', 'name'], lazy=False)
+        duplicate_records = list(filter(
+            lambda r: r['__count'] > 1, record_counts))
+        if duplicate_records:
+            duplicate_names = list(map(lambda r: r['name'], duplicate_records))
+            raise UserError(_("Sequences %s already exist.",
+                            ', '.join(duplicate_names)))
 
 class Picking(models.Model):
     _name = "stock.picking"

addons/stock/tests/__init__.py

@@ -23,3 +23,4 @@ from . import test_report_stock_quantity
 from . import test_report_tours
 from . import test_stock_return_picking
 from . import test_stock_lot
+from . import test_picking

addons/stock/tests/test_picking.py

@@ -0,0 +1,24 @@
+from odoo.tests import common
+from odoo.exceptions import UserError
+
+class TestPicking(common.TransactionCase):
+
+    def test_00_no_duplicate_sequence_code(self):
+        stock_location = self.env.ref('stock.stock_location_stock')
+        operation_type_1 = self.env['stock.picking.type'].create({
+            'name':'test 1',
+            'code': 'internal',
+            'default_location_src_id':stock_location.id,
+            'default_location_dest_id':stock_location.id,
+            'sequence_code':'testpicking'
+        })
+        with self.assertRaises(UserError) as er:
+            self.env['stock.picking.type'].create({
+                'name':'test 2',
+                'code': 'internal',
+                'default_location_src_id':stock_location.id,
+                'default_location_dest_id':stock_location.id,
+                'sequence_code':'testpicking'
+            })
+        self.assertEqual(
+            er.exception.args[0], f'Sequences {operation_type_1.sequence_id.name} already exist.')