nabble/ajde

<?php

abstract class Ajde_Shop_Cart_Item extends Ajde_Model
{
    protected $_autoloadParents = false;

    protected $_cartModel = null;

    public function __construct(Ajde_Shop_Cart $cart = null)
    {
        parent::__construct();
        if (isset($cart)) {
            $this->setCart($cart);
        }
    }

    public function hasLoaded()
    {
        return isset($this->_data['entity_id']) && !empty($this->_data['entity_id']);
    }

    /**
     * @param Ajde_Shop_Cart $cart
     */
    public function setCart(Ajde_Shop_Cart $cart)
    {
        parent::setCart($cart);
    }

    /**
     * @return Ajde_Shop_Cart
     */
    public function getCart()
    {
        $cart = parent::getCart();
        if (!$cart instanceof Ajde_Shop_Cart) {
            $cartModel = $this->_getCartModel();
            $cartModel->loadByPK($cart);
            $cart = $cartModel;
            parent::setCart($cart);
        }

        return $cart;
    }

    public function load($entity, $id)
    {
        return $this->loadByFields([
            'cart'      => $this->getCart()->getPK(),
            'entity'    => $entity,
            'entity_id' => $id,
        ]);
    }

    public function getQty()
    {
        return (int) parent::getQty();
    }

    public function addQty($qty)
    {
        $this->setQty($this->getQty() + (int) $qty);
    }

    public function setEntityById($entityName, $id)
    {
        try {
            $entity = $this->_getEntityModel($entityName);
            $entity->loadByPK($id);
        } catch (Exception $e) {
            // TODO:
            throw new Ajde_Exception("Could not load entity $entity into cart");
        }
        $this->setEntity($entity);
    }

    public function setEntity(Ajde_Model $entity)
    {
        try {
            $unitprice = $entity->getUnitprice();
        } catch (Exception $e) {
            // TODO:
            throw new Ajde_Exception("Entity $entity does not have a unitprice defined");
        }
        $this->set('entity', $entity->getTable());
        $this->set('entity_id', $entity);
        $this->set('unitprice', $unitprice);
    }

    /**
     * @return Ajde_Model
     */
    public function getEntity()
    {
        $entity = $this->get('entity_id');
        if (!$entity instanceof Ajde_Model) {
            $id = $entity;
            $entity = $this->_getEntityModel($this->get('entity'));
            $entity->loadByPK($id);
        }

        return $entity;
    }

    /**
     * @param string $entity
     *
     * @return Ajde_Model
     */
    protected function _getEntityModel($entityName)
    {
        $entityModelName = ucfirst((string) $entityName).'Model';

        return new $entityModelName();
    }

    /**
     * @return Ajde_Shop_Cart_Item
     */
    protected function _getCartModel()
    {
        $cartModelName = $this->_cartModel;

        return new $cartModelName();
    }

    protected function _format($value)
    {
        if (function_exists('money_format')) {
            return money_format('%!i', $value);
        } else {
            return $value;
        }
    }

    public function getFormattedUnitprice()
    {
        return config('shop.currency.symbol').'&nbsp;'.$this->_format(($this->getVATPercentage() + 1) * $this->getUnitprice());
    }

    public function getVATPercentage()
    {
        $entity = $this->getEntity();
        if ($entity->has('VATPercentage') || method_exists($entity, 'getVATPercentage')) {
            return $entity->getVATPercentage();
        }

        return config('shop.vat.default');
    }

    public function getVATAmount()
    {
        return $this->getVATPercentage() * $this->getSubTotal();
    }

    public function getFormattedVATAmount()
    {
        return config('shop.currency.symbol').'&nbsp;'.$this->_format($this->getVATAmount());
    }

    public function getSubTotal()
    {
        return $this->getUnitprice() * $this->getQty();
    }

    public function getTotal()
    {
        return $this->getVATAmount() + $this->getSubTotal();
    }

    public function getFormattedTotal()
    {
        return config('shop.currency.symbol').'&nbsp;'.$this->_format($this->getTotal());
    }
}