<?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_Server

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

 */

/** Zend_Server_Interface */

require_once 'Zend/Server/Interface.php';

/**

 * Zend_Server_Definition

 */

require_once 'Zend/Server/Definition.php';

/**

 * Zend_Server_Method_Definition

 */

require_once 'Zend/Server/Method/Definition.php';

/**

 * Zend_Server_Method_Callback

 */

require_once 'Zend/Server/Method/Callback.php';

/**

 * Zend_Server_Method_Prototype

 */

require_once 'Zend/Server/Method/Prototype.php';

/**

 * Zend_Server_Method_Parameter

 */

require_once 'Zend/Server/Method/Parameter.php';

/**

 * Zend_Server_Abstract

 *

 * @category   Zend

 * @package    Zend_Server

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

 */

abstract class Zend_Server_Abstract implements Zend_Server_Interface

{

    /**

     * @deprecated

     * @var array List of PHP magic methods (lowercased)

     */

    protected static $magic_methods = array(

        '__call',

        '__clone',

        '__construct',

        '__destruct',

        '__get',

        '__isset',

        '__set',

        '__set_state',

        '__sleep',

        '__tostring',

        '__unset',

        '__wakeup',

    );

    /**

     * @var bool Flag; whether or not overwriting existing methods is allowed

     */

    protected $_overwriteExistingMethods = false;

    /**

     * @var Zend_Server_Definition

     */

    protected $_table;

    /**

     * Constructor

     *

     * Setup server description

     *

     * @return void

     */

    public function __construct()

    {

        $this->_table = new Zend_Server_Definition();

        $this->_table->setOverwriteExistingMethods($this->_overwriteExistingMethods);

    }

    /**

     * Returns a list of registered methods

     *

     * Returns an array of method definitions.

     *

     * @return Zend_Server_Definition

     */

    public function getFunctions()

    {

        return $this->_table;

    }

    /**

     * Lowercase a string

     *

     * Lowercase's a string by reference

     *

     * @deprecated

     * @param  string $string value

     * @param  string $key

     * @return string Lower cased string

     */

    public static function lowerCase(&$value, &$key)

    {

        trigger_error(__CLASS__ . '::' . __METHOD__ . '() is deprecated and will be removed in a future version', E_USER_NOTICE);

        return $value = strtolower($value);

    }

    /**

     * Build callback for method signature

     *

     * @param  Zend_Server_Reflection_Function_Abstract $reflection

     * @return Zend_Server_Method_Callback

     */

    protected function _buildCallback(Zend_Server_Reflection_Function_Abstract $reflection)

    {

        $callback = new Zend_Server_Method_Callback();

        if ($reflection instanceof Zend_Server_Reflection_Method) {

            $callback->setType($reflection->isStatic() ? 'static' : 'instance')

                     ->setClass($reflection->getDeclaringClass()->getName())

                     ->setMethod($reflection->getName());

        } elseif ($reflection instanceof Zend_Server_Reflection_Function) {

            $callback->setType('function')

                     ->setFunction($reflection->getName());

        }

        return $callback;

    }

    /**

     * Build a method signature

     *

     * @param  Zend_Server_Reflection_Function_Abstract $reflection

     * @param  null|string|object $class

     * @return Zend_Server_Method_Definition

     * @throws Zend_Server_Exception on duplicate entry

     */

    protected function _buildSignature(Zend_Server_Reflection_Function_Abstract $reflection, $class = null)

    {

        $ns         = $reflection->getNamespace();

        $name       = $reflection->getName();

        $method     = empty($ns) ? $name : $ns . '.' . $name;

        if (!$this->_overwriteExistingMethods && $this->_table->hasMethod($method)) {

            require_once 'Zend/Server/Exception.php';

            throw new Zend_Server_Exception('Duplicate method registered: ' . $method);

        }

        $definition = new Zend_Server_Method_Definition();

        $definition->setName($method)

                   ->setCallback($this->_buildCallback($reflection))

                   ->setMethodHelp($reflection->getDescription())

                   ->setInvokeArguments($reflection->getInvokeArguments());

        foreach ($reflection->getPrototypes() as $proto) {

            $prototype = new Zend_Server_Method_Prototype();

            $prototype->setReturnType($this->_fixType($proto->getReturnType()));

            foreach ($proto->getParameters() as $parameter) {

                $param = new Zend_Server_Method_Parameter(array(

                    'type'     => $this->_fixType($parameter->getType()),

                    'name'     => $parameter->getName(),

                    'optional' => $parameter->isOptional(),

                ));

                if ($parameter->isDefaultValueAvailable()) {

                    $param->setDefaultValue($parameter->getDefaultValue());

                }

                $prototype->addParameter($param);

            }

            $definition->addPrototype($prototype);

        }

        if (is_object($class)) {

            $definition->setObject($class);

        }

        $this->_table->addMethod($definition);

        return $definition;

    }

    /**

     * Dispatch method

     *

     * @param  Zend_Server_Method_Definition $invocable

     * @param  array $params

     * @return mixed

     */

    protected function _dispatch(Zend_Server_Method_Definition $invocable, array $params)

    {

        $callback = $invocable->getCallback();

        $type     = $callback->getType();

        if ('function' == $type) {

            $function = $callback->getFunction();

            return call_user_func_array($function, $params);

        }

        $class  = $callback->getClass();

        $method = $callback->getMethod();

        if ('static' == $type) {

            return call_user_func_array(array($class, $method), $params);

        }

        $object = $invocable->getObject();

        if (!is_object($object)) {

            $invokeArgs = $invocable->getInvokeArguments();

            if (!empty($invokeArgs)) {

                $reflection = new ReflectionClass($class);

                $object     = $reflection->newInstanceArgs($invokeArgs);

            } else {

                $object = new $class;

            }

        }

        return call_user_func_array(array($object, $method), $params);

    }

    /**

     * Map PHP type to protocol type

     *

     * @param  string $type

     * @return string

     */

    abstract protected function _fixType($type);

}