<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * 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@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Sales
 * @copyright   Copyright (c) 2011 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Order configuration model
 *
 * @category   Mage
 * @package    Mage_Sales
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Sales_Model_Order_Config extends Mage_Core_Model_Config_Base
{
    /**
     * Statuses per state array
     *
     * @var array
     */
    protected $_stateStatuses;

    private $_states;

    public function __construct()
    {
        parent::__construct(Mage::getConfig()->getNode('global/sales/order'));
    }

    protected function _getStatus($status)
    {
        return $this->getNode('statuses/'.$status);
    }

    protected function _getState($state)
    {
        return $this->getNode('states/'.$state);
    }

    /**
     * Retrieve default status for state
     *
     * @param   string $state
     * @return  string
     */
    public function getStateDefaultStatus($state)
    {
        $status = false;
        if ($stateNode = $this->_getState($state)) {
            $status = Mage::getModel('sales/order_status')
                ->loadDefaultByState($state);
            $status = $status->getStatus();
        }
        return $status;
    }

    /**
     * Retrieve status label
     *
     * @param   string $code
     * @return  string
     */
    public function getStatusLabel($code)
    {
        $status = Mage::getModel('sales/order_status')
            ->load($code);
        return $status->getStoreLabel();
    }

    /**
     * State label getter
     *
     * @param   string $state
     * @return  string
     */
    public function getStateLabel($state)
    {
        if ($stateNode = $this->_getState($state)) {
            $state = (string) $stateNode->label;
            return Mage::helper('sales')->__($state);
        }
        return $state;
    }


    /**
     * Retrieve all statuses
     *
     * @return array
     */
    public function getStatuses()
    {
        $statuses = Mage::getResourceModel('sales/order_status_collection')
            ->toOptionHash();
        return $statuses;
    }

    /**
     * Order states getter
     *
     * @return array
     */
    public function getStates()
    {
        $states = array();
        foreach ($this->getNode('states')->children() as $state) {
            $label = (string) $state->label;
            $states[$state->getName()] = Mage::helper('sales')->__($label);
        }
        return $states;
    }


    /**
     * Retrieve statuses available for state
     * Get all possible statuses, or for specified state, or specified states array
     * Add labels by default. Return plain array of statuses, if no labels.
     *
     * @param mixed $state
     * @param bool $addLabels
     * @return array
     */
    public function getStateStatuses($state, $addLabels = true)
    {
        $key = $state . $addLabels;
        if (isset($this->_stateStatuses[$key])) {
            return $this->_stateStatuses[$key];
        }
        $statuses = array();
        if (empty($state) || !is_array($state)) {
            $state = array($state);
        }
        foreach ($state as $_state) {
            if ($stateNode = $this->_getState($_state)) {
                $collection = Mage::getResourceModel('sales/order_status_collection')
                    ->addStateFilter($_state)
                    ->orderByLabel();
                foreach ($collection as $status) {
                    $code = $status->getStatus();
                    if ($addLabels) {
                        $statuses[$code] = $status->getStoreLabel();
                    } else {
                        $statuses[] = $code;
                    }
                }
            }
        }
        $this->_stateStatuses[$key] = $statuses;
        return $statuses;
    }

    /**
     * Retrieve states which are visible on front end
     *
     * @return array
     */
    public function getVisibleOnFrontStates()
    {
        $this->_getStates();
        return $this->_states['visible'];
    }

    /**
     * Get order states, visible on frontend
     *
     * @return array
     */
    public function getInvisibleOnFrontStates()
    {
        $this->_getStates();
        return $this->_states['invisible'];
    }

    private function _getStates()
    {
        if (null === $this->_states) {
            $this->_states = array(
                'all'       => array(),
                'visible'   => array(),
                'invisible' => array(),
                'statuses'  => array(),
            );
            foreach ($this->getNode('states')->children() as $state) {
                $name = $state->getName();
                $this->_states['all'][] = $name;
                $isVisibleOnFront = (string)$state->visible_on_front;
                if ((bool)$isVisibleOnFront || ($state->visible_on_front && $isVisibleOnFront == '')) {
                    $this->_states['visible'][] = $name;
                }
                else {
                    $this->_states['invisible'][] = $name;
                }
                foreach ($state->statuses->children() as $status) {
                    $this->_states['statuses'][$name][] = $status->getName();
                }
            }
        }
    }
}
