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from Products.ERP5.interfaces.business_completable import IBusinessCompletable
from Products.ERP5.interfaces.business_buildable import IBusinessBuildable

class IBusinessPath(IBusinessCompletable, IBusinessBuildable):
  """Business Path interface specification
  """
  def getExpectedStartDate(task, predecessor_date=None):
    """Returns the expected start date for this
    path based on the task and provided predecessor_date.

    'task' is a document which follows the ITaskGetter interface
    (getStartDate, getStopDate) and defined the reference dates
    for the business process execution

    'predecessor_date' can be provided as predecessor date and
     to override the date provided in the task
    """

  def getExpectedStopDate(task, predecessor_date=None):
    """Returns the expected stop date for this
    path based on the task and provided predecessor_date.

    'task' is a document which follows the ITaskGetter interface
    (getStartDate, getStopDate) and defined the reference dates
    for the business process execution

    'predecessor_date' can be provided as predecessor date and
     to override the date provided in the task
    """

  def getRelatedSimulationMovementValueList(explanation):
    """Returns list of values of Simulation Movements related to self
    and delivery

    explanation - any document related to business path - which bootstraped
                  process or is related to build of one paths
    """

  def isMovementRelatedWithMovement(movement_value_a, movement_value_b):
    """Checks if self is parent or children to movement_value

    This logic is Business Process specific for Simulation Movements, as
    sequence of Business Process is not related appearance of Simulation Tree

    movement_value_a, movement_value_b - movements to check relation between
    """
