Split customer moves when splitting supplier moves of drop shipment

modules/sale_supply_drop_shipment/CHANGELOG

@@ -1,3 +1,4 @@
+* Split customer moves when splitting supplier moves
 * Rename 'done' button to 'do'
 
 Version 7.0.0 - 2023-10-30

modules/sale_supply_drop_shipment/__init__.py

@@ -30,3 +30,7 @@ def register():
         party.Replace,
         party.Erase,
         module='sale_supply_drop_shipment', type_='wizard')
+    Pool.register(
+        stock.MoveSplit,
+        module='sale_supply_drop_shipment', type_='model',
+        depends=['stock_split'])

modules/sale_supply_drop_shipment/message.xml

@@ -12,5 +12,8 @@ this repository contains the full copyright notices and license terms. -->
         <record model="ir.message" id="msg_drop_shipment_delete_cancel">
             <field name="text">To delete drop shipment "%(shipment)s" you must cancel it.</field>
         </record>
+        <record model="ir.message" id="msg_move_split_drop">
+            <field name="text">To split move from drop shipment, you must use the split wizard.</field>
+        </record>
     </data>
 </tryton>

modules/sale_supply_drop_shipment/setup.py

@@ -47,7 +47,10 @@ for dep in info.get('depends', []):
         requires.append(get_require_version('trytond_%s' % dep))
 requires.append(get_require_version('trytond'))
 
-tests_require = [get_require_version('proteus')]
+tests_require = [
+    get_require_version('proteus'),
+    get_require_version('trytond_stock_split'),
+    ]
 
 setup(name=name,
     version=version,

modules/sale_supply_drop_shipment/stock.py

@@ -588,6 +588,37 @@ class Move(metaclass=PoolMeta):
 
     @classmethod
     def copy(cls, moves, default=None):
+        context = Transaction().context
+        if (context.get('_stock_move_split')
+                and not context.get('_stock_move_split_drop')):
+            for move in moves:
+                if move.moves_drop:
+                    raise AccessError(
+                        gettext('sale_supply_drop_shipment'
+                            '.msg_move_split_drop'))
         default = default.copy() if default is not None else {}
         default.setdefault('moves_drop')
         return super().copy(moves, default=default)
+
+
+class MoveSplit(metaclass=PoolMeta):
+    __name__ = 'stock.move'
+
+    def split(self, quantity, unit, count=None):
+        with Transaction().set_context(_stock_move_split_drop=True):
+            moves = super().split(quantity, unit, count=count)
+        if self.moves_drop:
+            to_save = []
+            moves_drop = list(self.moves_drop)
+            for move in moves:
+                remainder = move.quantity
+                while remainder > 0 and moves_drop:
+                    move_drop = moves_drop.pop(0)
+                    splits = move_drop.split(remainder, move.unit, count=1)
+                    move_drop.origin_drop = move
+                    remainder -= move_drop.quantity
+                    to_save.append(move_drop)
+                    splits.remove(move_drop)
+                    moves_drop.extend(splits)
+            self.__class__.save(to_save)
+        return moves

modules/sale_supply_drop_shipment/tests/test_module.py

@@ -10,6 +10,7 @@ class SaleSupplyDropShipmentTestCase(
         PartyCompanyCheckEraseMixin, CompanyTestMixin, ModuleTestCase):
     'Test SaleSupplyDropShipment module'
     module = 'sale_supply_drop_shipment'
+    extras = ['stock_split']
 
 
 del ModuleTestCase

modules/sale_supply_drop_shipment/tryton.cfg

@@ -9,6 +9,8 @@ depends:
     sale
     sale_supply
     stock
+extras_depend:
+    stock_split
 xml:
     stock.xml
     sale.xml