[IMP] stock: add revert inventory adjustment feature

Purpose of the task is to be able to click on inventory adjustment
history and do a reverse adjustment by using `Revert Inventory` action.

`Revert Inventory` action is available in Inventory Adjustments > History
and Product Moves > select some lines > actions dropdown. This
method creates a new move that reverts the quantity (including negative
values) with prefix `[reverted]`.

TaskID - 2859490

closes odoo/odoo#95720

Signed-off-by: Tiffany Chang <tic@odoo.com>

addons/stock/models/stock_move_line.py

@@ -860,3 +860,56 @@ class StockMoveLine(models.Model):
             'views': [[False, "form"]],
             'res_id': self.id,
         }
+
+    def _get_revert_inventory_move_values(self):
+        self.ensure_one()
+        return {
+            'name':_('%s [reverted]', self.reference),
+            'product_id': self.product_id.id,
+            'product_uom': self.product_uom_id.id,
+            'product_uom_qty': self.qty_done,
+            'company_id': self.company_id.id or self.env.company.id,
+            'state': 'confirmed',
+            'location_id': self.location_dest_id.id,
+            'location_dest_id': self.location_id.id,
+            'is_inventory': True,
+            'move_line_ids': [(0, 0, {
+                'product_id': self.product_id.id,
+                'product_uom_id': self.product_uom_id.id,
+                'qty_done': self.qty_done,
+                'location_id': self.location_dest_id.id,
+                'location_dest_id': self.location_id.id,
+                'company_id': self.company_id.id or self.env.company.id,
+                'lot_id': self.lot_id.id,
+                'package_id': self.package_id.id,
+                'result_package_id': self.package_id.id,
+                'owner_id': self.owner_id.id,
+            })]
+        }
+
+    def action_revert_inventory(self):
+        move_vals = []
+        processed_move_line = self.env['stock.move.line']
+        for move_line in self:
+            if move_line.is_inventory and not float_is_zero(move_line.qty_done, precision_digits=move_line.product_uom_id.rounding):
+                processed_move_line += move_line
+                move_vals.append(move_line._get_revert_inventory_move_values())
+        if not processed_move_line:
+            return {
+                'type': 'ir.actions.client',
+                'tag': 'display_notification',
+                'params': {
+                    'type': 'danger',
+                    'message': _("There are no inventory adjustments to revert."),
+                }
+            }
+        moves = self.env['stock.move'].create(move_vals)
+        moves._action_done()
+        return {
+            'type': 'ir.actions.client',
+            'tag': 'display_notification',
+            'params': {
+                'type': 'success',
+                'message': _("The inventory adjustments have been reverted."),
+            }
+        }

addons/stock/tests/test_quant_inventory_mode.py

@@ -294,3 +294,37 @@ class TestEditableQuant(TransactionCase):
         warning = dupe_sn._onchange_serial_number()
         self.assertTrue(warning, 'Reuse of existing serial number not detected')
         self.assertEqual(list(warning.keys())[0], 'warning', 'Warning message was not returned')
+
+    def test_revert_inventory_adjustment(self):
+        """Try to revert inventory adjustment"""
+        default_wh = self.env['stock.warehouse'].search([('company_id', '=', self.env.company.id)], limit=1)
+        default_stock_location = default_wh.lot_stock_id
+        quant = self.Quant.create({
+            'product_id': self.product.id,
+            'location_id': default_stock_location.id,
+            'inventory_quantity': 100,
+        })
+        quant.action_apply_inventory()
+        move_lines = self.env['stock.move.line'].search([('product_id', '=', self.product.id), ('is_inventory', '=', True)])
+        self.assertEqual(len(move_lines), 1, "One inventory adjustment move lines should have been created")
+        self.assertEqual(self.product.qty_available, 100, "Before revert inventory adjustment qty is 100")
+        move_lines.action_revert_inventory()
+        self.assertEqual(self.product.qty_available, 0, "After revert inventory adjustment qty is not zero")
+
+    def test_multi_revert_inventory_adjustment(self):
+        """Try to revert inventory adjustment with multiple lines"""
+        default_wh = self.env['stock.warehouse'].search([('company_id', '=', self.env.company.id)], limit=1)
+        default_stock_location = default_wh.lot_stock_id
+        quant = self.Quant.create({
+            'product_id': self.product.id,
+            'location_id': default_stock_location.id,
+            'inventory_quantity': 100,
+        })
+        quant.action_apply_inventory()
+        quant.inventory_quantity = 150
+        quant.action_apply_inventory()
+        move_lines = self.env['stock.move.line'].search([('product_id', '=', self.product.id), ('is_inventory', '=', True)])
+        self.assertEqual(self.product.qty_available, 150, "Before revert multi inventory adjustment qty is 150")
+        self.assertEqual(len(move_lines), 2, "Two inventory adjustment move lines should have been created")
+        move_lines.action_revert_inventory()
+        self.assertEqual(self.product.qty_available, 0, "After revert multi inventory adjustment qty is not zero")

addons/stock/views/stock_move_line_views.xml

@@ -192,6 +192,16 @@
         </field>
     </record>
 
+    <record id="action_revert_inventory_adjustment" model="ir.actions.server">
+        <field name="name">Revert Inventory Adjustment</field>
+        <field name="model_id" ref="stock.model_stock_move_line"/>
+        <field name="binding_model_id" ref="stock.model_stock_move_line"/>
+        <field name="state">code</field>
+        <field name="code">
+            action = records.action_revert_inventory()
+        </field>
+    </record>
+
     <record id="stock_move_line_action" model="ir.actions.act_window">
             <field name="name">Moves History</field>
             <field name="res_model">stock.move.line</field>