<?php

class Order extends mfBaseModel {
  private $owner;
  private $billingaddress;
  private $products;
  private $files;
  private $creator;
  private $editor;
  
  
  public function getNewPos() {
    if(!$this->id) {
      return 0;
    }
    
    $p = end($this->getProperty("products"));
    return ++$p->pos;
  }
  
  public function getProperty($name) {
    if($this->$name == null) {
      
      if(!$this->id) {
        return null;
      }
      
      if($name == "owner") {
        $this->owner = new Address($this->owner_id);
        return $this->owner;
      }
      
      if($name == "contact") {
        $this->contact = new Address($this->contact_id);
        return $this->contact;
      }
      
      if($name == "billingaddress") {
        $this->billingaddress = new Address($this->billingaddress_id);
        return $this->billingaddress;
      }
      
      if($name == "products") {
        $this->products = OrderProductModel::search(["order_id" => $this->id]);
        return $this->products;
      }
      
      if($name == "files") {
        $this->files = OrderFileModel::search(['order_id' => $this->id]);
        return $this->files;
      }
      
      if($name == "creator") {
        $this->creator = new User($this->create_by);
        return $this->creator;
      }
      
      if($name == "editor") {
        $this->editor = new User($this->edit_by);
        return $this->editor;
      }
      
      $classname = ucfirst($name);
      $idfield = $name."_id";
      $this->$name = new $classname($this->$idfield);
      
      if($this->$name->id) {
        return $this->$name;
      } else {
        return null;
      }
    }
    
    return $this->$name;
  }
  
}