<?php

namespace App\Cms\Export\Form;
use App\Cms\Export;

class ExportForm extends \Qs_Form
{
    protected $_controllerAction = 'export';

    /**
     * @return ExportForm|\Qs_Form
     */
    protected function _initElements()
    {
        $dataObj = new Export\Obj();
        $dictionaries = $dataObj->getDictionariesList();

        $this->addElement(
            'multiCheckbox',
            'dictionaries',
            array(
                'label'        => 'Export Dictionaries',
                'multioptions' => array_combine($dictionaries, $dictionaries),
                'columns'      => 2,
            )
        );

        $this->addElement(
            'checkboxTree',
            'pages',
            array(
                'label'        => 'Select Pages',
                'required'     => true,
                'multioptions' => $this->_getPages4MultiSelect(),
                'hasLinks'     => false
            )
        );

        $errorsDecorator = $this->getElement('pages')->getDecorator('Errors');
        $errorsDecorator->setOption('placement', \Zend_Form_Decorator_Errors::PREPEND);

        return $this;
    }

    /**
     * @return array
     */
    protected function _getPages4MultiSelect()
    {
        $result = array();
        $sitemap = \App_Cms_Obj::getInstance()->getSiteMap();
        $this->_prepareSitemap($sitemap, $result);
        return $result;
    }

    /**
     * @param array $sitemap
     * @param array $result
     * @return ExportForm
     */
    protected function _prepareSitemap(array $sitemap, array &$result)
    {
        $additional = array();
        foreach ($sitemap as $page) {
            if ('y' === $page['isAdditional']) {
                $destination = &$additional;
            } else {
                $destination = &$result;
            }

            $destination[$page['id']] = $this->_getNode($page);

            if (!empty($page['sub'])) {
                $destination[$page['id']]['sub'] = array();
                $this->_prepareSitemapSub($page['sub'], $destination[$page['id']]['sub']);
            }
        }

        $result = array_merge($result, $additional);

        return $this;
    }

    /**
     * @param array $sitemap
     * @param array $result
     * @return ExportForm
     */
    protected function _prepareSitemapSub(array $sitemap, array &$result)
    {
        foreach ($sitemap as $page) {
            $result[$page['id']] = $this->_getNode($page);

            if (!empty($page['sub'])) {
                $result[$page['id']]['sub'] = array();
                $this->_prepareSitemapSub($page['sub'], $result[$page['id']]['sub']);
            }
        }

        return $this;
    }

    /**
     * @param array $page
     * @return array
     */
    protected function _getNode(array $page)
    {
        $node = array(
            'id'    => $page['id'],
            'title' => $page['menuTitle'],
        );
        return $node;
    }

    protected function _initButtons()
    {
        if (!$this->_hasButtons) {
            return $this;
        }

        $this->addElement('submit', 'btnSubmit', array('label' => 'Export', 'attribs' => array('class' => 'btn')));

        $this->addElement(
            'submit',
            'btnCancel',
            array(
                'label'   => 'Reset',
                'attribs' => array(
                    'class'   => 'btn-cancel',
                    'onclick' => "window.location.href = '" . htmlspecialchars($this->getCancelUrl()) . "';",
                    'helper'  => 'formInputButton',
                ),
            )
        );

        $this->addDisplayGroup(array('btnSubmit', 'btnCancel'), 'submitGroup');

        return $this;
    }
}