<?php

class App_ECommerce_Order_Admin_Tab
{
    const TAB_ITEM = 'TAB_ITEM';

    protected $_tabs;
    protected $_templatePatch;
    protected $_rootFullAlias;
    protected $_sitemapSelector;
    protected $_restAlias;
    /** @var  Qs_Doc */
    protected $_doc;

    /**
     * Public constructor
     *
     * @param array $options
     */
    public function __construct($options)
    {
        Qs_Options::setOptions($this, $options);
    }

    protected function _getDoc()
    {
        if (null === $this->_doc) {
            $this->_doc = Zend_Registry::get('doc');
        }
        return $this->_doc;
    }

    public function getRootFullAlias()
    {
        if (empty($this->_rootFullAlias)) {
            $this->_rootFullAlias = Qs_SiteMap::findFirst($this->getSitemapSelector(true), 'fullAlias');
        }
        return $this->_rootFullAlias;
    }

    public function setRestAlias($params)
    {
        $this->_restAlias = $params;
        return $this;
    }

    /**
     * @param string $sitemapSelector Qs_SiteMap string selector
     * @return App_ECommerce_Order_Admin_Tab
     */
    public function setSitemapSelector($sitemapSelector)
    {
        $this->_sitemapSelector = $sitemapSelector;
        return $this;
    }

    public function getSitemapSelector($forceException = false)
    {
        if ($forceException && empty($this->_sitemapSelector)) {
            throw new Qs_Exception('Sitemap selector for root full alias is not set.');
        }
        return $this->_sitemapSelector;
    }

    public function getDefaultTabAlias()
    {
        $tabs = $this->getTabs();
        if ($tabs) {
            return current(array_keys($tabs));
        }
        return $tabs;
    }

    /**
     * Return tabs items
     *
     * @return array|bool
     */
    public function getTabs()
    {
        if (null === $this->_tabs) {
            $rootAlias = $this->getRootFullAlias();
            $page = Qs_SiteMap::getPage($rootAlias);
            $this->_tabs = (!empty($page['sub']) ? $page['sub'] : false);
        }
        return $this->_tabs;
    }

    public function getNextTabAlias()
    {
        $breakNext = false;
        $result = false;
        foreach ($this->getTabs() as $tab) {
            if ($breakNext) {
                $result = $tab['fullAlias'] . '/' . $this->getRestAlias();
                break;
            }
            if ($tab['fullAlias'] == CURRENT_PAGE_FINAL) {
                $breakNext = true;
            }
        }
        return $result;
    }

    /**
     * Initializing tabs
     *
     * @return App_ECommerce_Order_Admin_Tab
     */
    public function addTabs()
    {
        $tabs = $this->getTabs();
        if ($tabs) {
            foreach ($tabs as &$pageSub) {
                $this->_prepareTab($pageSub);
                $pageSub += array('restAlias' => $this->getRestAlias());
            }

            $item = array(
                'tpl'        => $this->_getTemplate('tabs.tpl'),
                'items'      => $tabs,
                'currentTab' => ($parts = explode('/', CURRENT_PAGE_FINAL)) ? end($parts) : null,
            );
            $this->_getDoc()->addItem($item, self::TAB_ITEM);
        }

        return $this;
    }

    protected function _prepareTab(array &$tab)
    {
        if (!empty($tab['items'])) {
            foreach ($tab['items'] as $pageSubItem) {
                $class = 'App_' . $pageSubItem['type'] . 'Obj';
                if (class_exists($class)) {
                    $classObj = new $class();
                    if (method_exists($classObj, 'isValidTab')) {
                        if (!$classObj->isValidTab($this->getRestAlias())) {
                            unset($tab['url']);
                        }
                    }
                }
            }
        }

        return $this;
    }

    public function getRestAlias()
    {
        if (empty($this->_restAlias)) {
            return str_replace($this->_getDoc()->getOption('fullAlias') . '/', '', CURRENT_PAGE);
        }
        return $this->_restAlias;
    }

    public function setTemplatePath($patch)
    {
        $this->_templatePatch = $patch;
        return $this;
    }

    public function getTemplatePath()
    {
        if (!empty($this->_templatePatch)) {
            return $this->_templatePatch;
        }
        return false;
    }

    /**
     * Return template patch
     *
     * @param string $template
     * @return string
     */
    protected function _getTemplate($template)
    {
        if (false !== ($templatePath = $this->getTemplatePath())) {
            return Qs_SiteMap::getTemplate($template, $this->getTemplatePath());
        }
        return $this->_getDoc()->getTemplate($template);
    }
}