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modules/sale_shipment_tolerance/sale.py

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+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.i18n import gettext
+from trytond.pool import Pool, PoolMeta
+
+from .exceptions import OverShipmentWarning
+
+
+class Line(metaclass=PoolMeta):
+    __name__ = 'sale.line'
+
+    def _test_under_shipment_tolerance(self, quantity):
+        pool = Pool()
+        Configuration = pool.get('sale.configuration')
+        if quantity:
+            config = Configuration(1)
+            tolerance = config.get_multivalue(
+                'sale_under_shipment_tolerance', company=self.company.id)
+            if tolerance is not None:
+                minimal_quantity = abs(self.quantity * (1 - tolerance))
+                minimal_quantity = self.unit.round(minimal_quantity)
+                quantity = self.unit.round(quantity)
+                return quantity <= minimal_quantity < abs(self.quantity)
+        return False
+
+    @property
+    def _move_remaining_quantity(self):
+        quantity = super()._move_remaining_quantity
+        if self._test_under_shipment_tolerance(quantity):
+            return 0
+        return quantity
+
+    def get_move(self, shipment_type):
+        pool = Pool()
+        Uom = pool.get('product.uom')
+        move = super().get_move(shipment_type)
+        # Compute tolerance only if there is already at least one move.
+        if move and set(self.moves) - set(self.moves_recreated):
+            quantity = Uom.compute_qty(
+                move.unit, move.quantity, self.unit, round=False)
+            if self._test_under_shipment_tolerance(quantity):
+                move = None
+        return move
+
+    def check_over_shipment(self):
+        pool = Pool()
+        Configuration = pool.get('sale.configuration')
+        Warning = pool.get('res.user.warning')
+        Lang = pool.get('ir.lang')
+        config = Configuration(1)
+        lang = Lang.get()
+
+        if self.quantity >= 0:
+            shipment_type = 'out'
+        else:
+            shipment_type = 'in'
+        shipped_quantity = self._get_shipped_quantity(shipment_type)
+        tolerance = config.get_multivalue(
+            'sale_over_shipment_tolerance', company=self.company.id)
+        if tolerance is not None:
+            maximal_quantity = abs(self.quantity * tolerance)
+            if shipped_quantity > maximal_quantity:
+                name = 'over_shipment_sale_line_%d' % self.id
+                if Warning.check(name):
+                    raise OverShipmentWarning(
+                        name,
+                        gettext('sale_shipment_tolerance.msg_over_shipment',
+                            line=self.rec_name,
+                            shipped=lang.format_number_symbol(
+                                shipped_quantity, self.unit),
+                            maximal=lang.format_number_symbol(
+                                maximal_quantity, self.unit)))