<?php
/**
 * Parsec
 * Copyright (c) 2010 Maxime Bouroumeau-Fuseau
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @author Maxime Bouroumeau-Fuseau
 * @copyright 2010 (c) Maxime Bouroumeau-Fuseau
 * @license http://www.opensource.org/licenses/mit-license.php
 * @link http://github.com/maximebf/parsec
 */
 
namespace Parsec;

use ReflectionClass;

/**
 * Creates an object of the specified class under one
 * of the registered namespace
 */
class ContextFactory
{
    /** @var array */
    protected $namespaces = array();
    
    /**
     * @param array $namespaces
     */
    public function __construct(array $namespaces = array())
    {
        $this->setNamespaces($namespaces);
    }
    
    /**
     * @param string $className
     * @param array $constructorArgs
     * @return Context
     */
    public function createInstance($className, array $constructorArgs = array())
    {
        foreach ($this->namespaces as $namespace) {
            if (class_exists($namespace . $className)) {
                $class = new ReflectionClass($namespace . $className);
                return $class->newInstanceArgs($constructorArgs);
            }
        }
        return null;
    }
    
    /**
     * @param array $namespaces
     * @return ContextFactory
     */
    public function setNamespaces(array $namespaces)
    {
        $this->namespaces = array();
        array_map(array($this, 'addNamespace'), $namespaces);
        return $this;
    }
    
    /**
     * @param string $namespace
     * @return ContextFactory
     */
    public function addNamespace($namespace)
    {
        $this->namespaces[] = rtrim((string) $namespace, '\\') . '\\';
        return $this;
    }
    
    /**
     * @return array
     */
    public function getNamespaces()
    {
        return $this->namespaces;
    }
}