<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Validate

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/**

 * @see Zend_Validate_Abstract

 */

require_once 'Zend/Validate/Abstract.php';

/**

 * @see Zend_Loader

 */

require_once 'Zend/Loader.php';

/**

 * @category   Zend

 * @package    Zend_Validate

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Validate_Barcode extends Zend_Validate_Abstract

{

    const INVALID        = 'barcodeInvalid';

    const FAILED         = 'barcodeFailed';

    const INVALID_CHARS  = 'barcodeInvalidChars';

    const INVALID_LENGTH = 'barcodeInvalidLength';

    protected $_messageTemplates = array(

        self::FAILED         => "'%value%' failed checksum validation",

        self::INVALID_CHARS  => "'%value%' contains invalid characters",

        self::INVALID_LENGTH => "'%value%' should have a length of %length% characters",

        self::INVALID        => "Invalid type given. String expected",

    );

    /**

     * Additional variables available for validation failure messages

     *

     * @var array

     */

    protected $_messageVariables = array(

        'length' => '_length'

    );

    /**

     * Length for the set subtype

     *

     * @var integer

     */

    protected $_length;

    /**

     * Barcode adapter

     *

     * @var Zend_Validate_Barcode_BarcodeAdapter

     */

    protected $_adapter;

    /**

     * Generates the standard validator object

     *

     * @param  string|Zend_Config|

     *         Zend_Validate_Barcode_BarcodeAdapter $adapter Barcode adapter to use

     * @return void

     * @throws Zend_Validate_Exception

     */

    public function __construct($adapter)

    {

        if ($adapter instanceof Zend_Config) {

            $adapter = $adapter->toArray();

        }

        $options  = null;

        $checksum = null;

        if (is_array($adapter)) {

            if (array_key_exists('options', $adapter)) {

                $options = $adapter['options'];

            }

            if (array_key_exists('checksum', $adapter)) {

                $checksum = $adapter['checksum'];

            }

            if (array_key_exists('adapter', $adapter)) {

                $adapter = $adapter['adapter'];

            } else {

                require_once 'Zend/Validate/Exception.php';

                throw new Zend_Validate_Exception("Missing option 'adapter'");

            }

        }

        $this->setAdapter($adapter, $options);

        if ($checksum !== null) {

            $this->setChecksum($checksum);

        }

    }

    /**

     * Returns the set adapter

     *

     * @return Zend_Validate_Barcode_BarcodeAdapter

     */

    public function getAdapter()

    {

        return $this->_adapter;

    }

    /**

     * Sets a new barcode adapter

     *

     * @param  string|Zend_Validate_Barcode $adapter Barcode adapter to use

     * @param  array  $options Options for this adapter

     * @return void

     * @throws Zend_Validate_Exception

     */

    public function setAdapter($adapter, $options = null)

    {

        $adapter = ucfirst(strtolower($adapter));

        require_once 'Zend/Loader.php';

        if (Zend_Loader::isReadable('Zend/Validate/Barcode/' . $adapter. '.php')) {

            $adapter = 'Zend_Validate_Barcode_' . $adapter;

        }

        if (!class_exists($adapter)) {

            Zend_Loader::loadClass($adapter);

        }

        $this->_adapter = new $adapter($options);

        if (!$this->_adapter instanceof Zend_Validate_Barcode_AdapterInterface) {

            require_once 'Zend/Validate/Exception.php';

            throw new Zend_Validate_Exception(

                "Adapter " . $adapter . " does not implement Zend_Validate_Barcode_AdapterInterface"

            );

        }

        return $this;

    }

    /**

     * Returns the checksum option

     *

     * @return boolean

     */

    public function getChecksum()

    {

        return $this->getAdapter()->getCheck();

    }

    /**

     * Sets the checksum option

     *

     * @param  boolean $checksum

     * @return Zend_Validate_Barcode

     */

    public function setChecksum($checksum)

    {

        $this->getAdapter()->setCheck($checksum);

        return $this;

    }

    /**

     * Defined by Zend_Validate_Interface

     *

     * Returns true if and only if $value contains a valid barcode

     *

     * @param  string $value

     * @return boolean

     */

    public function isValid($value)

    {

        if (!is_string($value)) {

            $this->_error(self::INVALID);

            return false;

        }

        $this->_setValue($value);

        $adapter       = $this->getAdapter();

        $this->_length = $adapter->getLength();

        $result        = $adapter->checkLength($value);

        if (!$result) {

            if (is_array($this->_length)) {

                $temp = $this->_length;

                $this->_length = "";

                foreach($temp as $length) {

                    $this->_length .= "/";

                    $this->_length .= $length;

                }

                $this->_length = substr($this->_length, 1);

            }

            $this->_error(self::INVALID_LENGTH);

            return false;

        }

        $result = $adapter->checkChars($value);

        if (!$result) {

            $this->_error(self::INVALID_CHARS);

            return false;

        }

        if ($this->getChecksum()) {

            $result = $adapter->checksum($value);

            if (!$result) {

                $this->_error(self::FAILED);

                return false;

            }

        }

        return true;

    }

}