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from Products.ERP5.Document.MovementGroup import MovementGroup

class OrderMovementGroup(MovementGroup):
  """
  The purpose of MovementGroup is to define how movements are grouped,
  and how values are updated from simulation movements.

  This movement group is used to group movements that come from the same
  Order.
  """
  meta_type = 'ERP5 Order Movement Group'
  portal_type = 'Order Movement Group'

  def _getPropertyDict(self, movement, **kw):
    return {'causality_list': [self._getOrderRelativeUrl(movement)]}

  def test(self, movement, property_dict, **kw):
    if set(property_dict['causality_list']).issubset(movement.getCausalityList()):
      property_dict['causality_list'] = movement.getCausalityList()
      return True, property_dict
    else:
      return False, property_dict

  def _getOrderRelativeUrl(self, movement):
    try:
      getRootAppliedRule = movement.getRootAppliedRule
    except AttributeError:
      return # This is a temp movement
    # This is a simulation movement
    getCausality = getRootAppliedRule().getCausality
    return (getCausality(portal_type=movement.getPortalOrderTypeList()) or
            # In some cases (ex. DeliveryRule), there is no order
            # we may consider a PackingList as the order in the OrderGroup
            getCausality(portal_type=movement.getPortalDeliveryTypeList()))
