<?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_Service_WindowsAzure

 * @subpackage Storage

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

 */

/**

 * @category   Zend

 * @package    Zend_Service_WindowsAzure

 * @subpackage Storage

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

 */

class Zend_Service_WindowsAzure_Storage_TableEntity

{

    /**

     * Partition key

     * 

     * @var string

     */

    protected $_partitionKey;

    /**

     * Row key

     * 

     * @var string

     */

    protected $_rowKey;

    /**

     * Timestamp

     * 

     * @var string

     */

    protected $_timestamp;

    /**

     * Etag

     * 

     * @var string

     */

    protected $_etag = '';

    /**

     * Constructor

     * 

     * @param string  $partitionKey    Partition key

     * @param string  $rowKey          Row key

     */

    public function __construct($partitionKey = '', $rowKey = '') 

    {	        

        $this->_partitionKey = $partitionKey;

        $this->_rowKey       = $rowKey;

    }

    /**

     * Get partition key

     * 

     * @azure PartitionKey

     * @return string

     */

    public function getPartitionKey()

    {

        return $this->_partitionKey;

    }

    /**

     * Set partition key

     * 

     * @azure PartitionKey

     * @param string $value

     */

    public function setPartitionKey($value)

    {

        $this->_partitionKey = $value;

    }

    /**

     * Get row key

     * 

     * @azure RowKey

     * @return string

     */

    public function getRowKey()

    {

        return $this->_rowKey;

    }

    /**

     * Set row key

     * 

     * @azure RowKey

     * @param string $value

     */

    public function setRowKey($value)

    {

        $this->_rowKey = $value;

    }

    /**

     * Get timestamp

     * 

     * @azure Timestamp Edm.DateTime

     * @return string

     */

    public function getTimestamp()

    {

    	if (null === $this->_timestamp) {

            $this->setTimestamp(new DateTime());

        }

        return $this->_timestamp;

    }

    /**

     * Set timestamp

     * 

     * @azure Timestamp Edm.DateTime

     * @param DateTime $value

     */

    public function setTimestamp(DateTime $value)

    {

        $this->_timestamp = $value;

    }

    /**

     * Get etag

     * 

     * @return string

     */

    public function getEtag()

    {

        return $this->_etag;

    }

    /**

     * Set etag

     * 

     * @param string $value

     */

    public function setEtag($value = '')

    {

        $this->_etag = $value;

    }

    /**

     * Get Azure values

     * 

     * @return array

     */

    public function getAzureValues()

    {

        // Get accessors

        $accessors = self::getAzureAccessors(get_class($this));

        // Loop accessors and retrieve values

        $returnValue = array();

        foreach ($accessors as $accessor) {

            if ($accessor->EntityType == 'ReflectionProperty') {

                $property = $accessor->EntityAccessor;

                $returnValue[] = (object)array(

                    'Name'  => $accessor->AzurePropertyName,

                	'Type'  => $accessor->AzurePropertyType,

                	'Value' => $this->$property,

                );

            } else if ($accessor->EntityType == 'ReflectionMethod' && substr(strtolower($accessor->EntityAccessor), 0, 3) == 'get') {

                $method = $accessor->EntityAccessor;

                $returnValue[] = (object)array(

                    'Name'  => $accessor->AzurePropertyName,

                	'Type'  => $accessor->AzurePropertyType,

                	'Value' => $this->$method(),

                );

            }

        }

        // Return

        return $returnValue;

    }

    /**

     * Set Azure values

     * 

     * @param array $values

     * @param boolean $throwOnError Throw Zend_Service_WindowsAzure_Exception when a property is not specified in $values?

     * @throws Zend_Service_WindowsAzure_Exception

     */

    public function setAzureValues($values = array(), $throwOnError = false)

    {

        // Get accessors

        $accessors = self::getAzureAccessors(get_class($this));

        // Loop accessors and set values

        $returnValue = array();

        foreach ($accessors as $accessor) {

            if (isset($values[$accessor->AzurePropertyName])) {

                // Cast to correct type

                if ($accessor->AzurePropertyType != '') {

                    switch (strtolower($accessor->AzurePropertyType)) {

        	            case 'edm.int32':

        	            case 'edm.int64':

        	                $values[$accessor->AzurePropertyName] = intval($values[$accessor->AzurePropertyName]); break;

        	            case 'edm.boolean':

        	                if ($values[$accessor->AzurePropertyName] == 'true' || $values[$accessor->AzurePropertyName] == '1')

        	                    $values[$accessor->AzurePropertyName] = true;

        	                else

        	                    $values[$accessor->AzurePropertyName] = false;

        	                break;

        	            case 'edm.double':

        	                $values[$accessor->AzurePropertyName] = floatval($values[$accessor->AzurePropertyName]); break;

        	            case 'edm.datetime':

        	            	$values[$accessor->AzurePropertyName] = $this->_convertToDateTime($values[$accessor->AzurePropertyName]); break;

        	        }

                }

                // Assign value

                if ($accessor->EntityType == 'ReflectionProperty') {

                    $property = $accessor->EntityAccessor;

                    $this->$property = $values[$accessor->AzurePropertyName];

                } else if ($accessor->EntityType == 'ReflectionMethod' && substr(strtolower($accessor->EntityAccessor), 0, 3) == 'set') {

                    $method = $accessor->EntityAccessor;

                    $this->$method($values[$accessor->AzurePropertyName]);

                }

            } else if ($throwOnError) {

				require_once 'Zend/Service/WindowsAzure/Exception.php';

                throw new Zend_Service_WindowsAzure_Exception("Property '" . $accessor->AzurePropertyName . "' was not found in \$values array");    

            }

        }

        // Return

        return $returnValue;

    }

    /**

     * Get Azure accessors from class

     * 

     * @param string $className Class to get accessors for

     * @return array

     */

    public static function getAzureAccessors($className = '')

    {

        // List of accessors

        $azureAccessors = array();

        // Get all types

        $type = new ReflectionClass($className);

        // Loop all properties

        $properties = $type->getProperties();

        foreach ($properties as $property) {

            $accessor = self::getAzureAccessor($property);

            if (!is_null($accessor)) {

                $azureAccessors[] = $accessor;

            }

        }

        // Loop all methods

        $methods = $type->getMethods();

        foreach ($methods as $method) {

            $accessor = self::getAzureAccessor($method);

            if (!is_null($accessor)) {

                $azureAccessors[] = $accessor;

            }

        }

        // Return

        return $azureAccessors;

    }

    /**

     * Get Azure accessor from reflection member

     * 

     * @param ReflectionProperty|ReflectionMethod $member

     * @return object

     */

    public static function getAzureAccessor($member)

    {

        // Get comment

        $docComment = $member->getDocComment();

        // Check for Azure comment

        if (strpos($docComment, '@azure') === false)

        {

            return null;

        }

        // Search for @azure contents

        $azureComment = '';

        $commentLines = explode("\n", $docComment);

        foreach ($commentLines as $commentLine) {

            if (strpos($commentLine, '@azure') !== false) {

                $azureComment = trim(substr($commentLine, strpos($commentLine, '@azure') + 6));

                while (strpos($azureComment, '  ') !== false) {

                    $azureComment = str_replace('  ', ' ', $azureComment);

                }

                break;

            }

        }

        // Fetch @azure properties

        $azureProperties = explode(' ', $azureComment);

        return (object)array(

            'EntityAccessor'    => $member->getName(),

            'EntityType'        => get_class($member),

            'AzurePropertyName' => $azureProperties[0],

        	'AzurePropertyType' => isset($azureProperties[1]) ? $azureProperties[1] : ''

        );

    }

    /**

     * Converts a string to a DateTime object. Returns false on failure.

     * 

     * @param string $value The string value to parse

     * @return DateTime|boolean

     */

    protected function _convertToDateTime($value = '') 

    {

    	if ($value === '') {

    		return false;

    	}

    	if ($value instanceof DateTime) {

    		return $value;

    	}

    	if (@strtotime($value) !== false) {

	    	try {

	    		if (substr($value, -1) == 'Z') {

	    			$value = substr($value, 0, strlen($value) - 1);

	    		}

	    		return new DateTime($value, new DateTimeZone('UTC'));

	    	}

	    	catch (Exception $ex) {

	    		return false;

	    	}

	    }

    	return false;

    }

}