/** @retrun QueueService */
private function route(ElevatorRequest $request)
{
// Insert current elevator floor as a starting point
array_unshift($this->queue, $this->elevator->getCurrentFloor());
// Find the best place and insert source request (where to pick up)
$position = $this->insertRequest(0, $request->getSourceFloor());
// Find the best place after picking-up to land
$this->insertRequest($position, $request->getTargetFloor());
// Remove current elevator floor after successful routing
array_shift($this->queue);
return $this;
}
/** @return Elevator */
public function addRequest(ElevatorRequest $request)
{
$this->process();
if (!$this->floorService->getFloorState($request->getSourceFloor())) {
throw new Exception("Source floor is under maintenance.");
}
if (!$this->floorService->getFloorState($request->getTargetFloor())) {
throw new Exception("Target floor is under maintenance.");
}
$this->queue = $this->queueService->addRequest($this->queue, $this, $request);
$this->targetFloor = array_shift($this->queue);
return $this;
}
