<?php
/**
 * Datasource TreeMenu Children: Blog
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage datasource
 */

WBClass::load('WBDatasource_TreeMenu_Child'
        );

/**
 * Datasource TreeMenu Children: Blog
 *
 * Add recent blog articles to TreeMenu
 *
 * @todo read config
 * @todo add config parameters for output and article list
 * @version 1.0.0
 * @package WB
 * @subpackage datasource
 */
class WBDatasource_TreeMenu_Child_Blog extends WBDatasource_TreeMenu_Child
{
    /**
     * Blog Tool
     * @var WBBlog_Tool
     */
    private $blogTool;

    /**
     * Constructor
     *
     * Init blog tool
     */
    protected function init()
    {
        $this->blogTool =   WBClass::create('WBBlog_Tool');
        $this->params['pathprefix'] =   $this->blogTool->getListPath();
    }

    /**
     * Check URL dictionary record
     *
     * Return menu record
     *
     * @param string $urlid
     * @param string $url
     * @return array
     */
    public function getNode($urlid, $url)
    {
        $url        =   WBString::replaceSuperPlaceholders($url);
        $listPath   =   WBString::replaceSuperPlaceholders('[[SERVICE_HTML]]' . $this->blogTool->getListPath());
        if (strncmp($url, $listPath, strlen($listPath)) != 0) {
            return array();
        }

        $path       =   explode('/', trim(substr($url, strlen($listPath)), '/'));
        if (empty($path[0])) {
            $data           =   array();
            $data['url']    =   $url;
            $data['urlid']  =   $urlid;
            return $this->blogData2Node($data);
        }

        try {
            $this->blogTool->loadArticleByDay($path[0], $path[1]);
        } catch (WBException $e) {
            return array();
        }

        $data           =   $this->blogTool->getArticleData();
        $data['url']    =   $url;
        $data['urlid']  =   $urlid;
        return $this->blogData2Node($data);
    }

    /**
     * Get list of child nodes
     *
     * @todo use config to format linktext and tooltip
     * @param string $url
     * @return array
     */
    public function getChildren($url)
    {
        $url        =   WBString::replaceSuperPlaceholders($url);
        $listPath   =   WBString::replaceSuperPlaceholders('[[SERVICE_HTML]]' . $this->blogTool->getListPath());
        if ($url != $listPath) {
            return array();
        }
        $options    =   array(
                            'limit' =>  10
                        );

        $list       =   $this->blogTool->getList($options);
        $children   =   array();

        foreach ($list as $i => $l) {
            $this->blogTool->loadArticleByData($l);
            $this->url->addWord($this->blogTool->getArticleUrl());
            $data               =   $this->blogTool->getArticleData();
            $data['url']        =   $this->blogTool->getArticleUrl();
            $data['urlid']      =   $this->url->getId();

            $children[]         =   $this->blogData2Node($data);;
        }

        return $children;
    }

    /**
     * Get parent nodes until normal tree menu
     *
     * List parent nodes until normal (tree manu) parent nodes are reached.
     * The tree menu class will merge parents together
     *
     * @param array $child
     * @return array
     */
    public function getParents($child)
    {
        $parents    =   array();
        $listPath   =   WBString::replaceSuperPlaceholders('[[SERVICE_HTML]]' . $this->blogTool->getListPath());

        $this->url->addWord($listPath);
        $data           =   array();
        $data['url']    =   $this->url->getWord();
        $data['urlid']  =   $this->url->getId();
        $parents[]      =   $this->blogData2Node($data);

        if (strlen($child['url']) <= strlen($listPath)) {
            return $parents;
        }
        $parents[]  =   $child;
        return $parents;

    }

    private function blogData2Node($data = array())
    {
        $node               =   $this->nodePrototype;
        $node['id']         =   'blog';
        $node['url']        =   $data['url'];
        $node['urlid']      =   $data['urlid'];

        if (!isset($data['id']) || empty($data['id'])) {
            return $node;
        }

        $node['id']         =   'blog-' . $data['id'];
        $node['linktext']   =   $data['title'];
        if (20 < strlen($data['title'])) {
            $node['linktext']   =   mb_substr($data['title'], 0, 17) . '...';
        }
        $node['tooltip']    =   sprintf('%s (%s)', $data['title'], $data['created']);
        return $node;
    }


}