<?php

class Mapper_BlogPost extends Fiktiv_Model_Mapper_DbTableAbstract
{

    protected $_mapperUser = null;

    public static function generatePermalink(BlogPost $post)
    {
        $chars = array(
            ' ' => '-',
        );

        $permalink = $post->getTitle();

        foreach ($chars as $ch => $rep) {
            $permalink = str_replace($ch, $rep, $permalink);
        }

        return strtolower($permalink);
    }

    public function  __construct($dbtable = null) {
        parent::__construct($dbtable);

        $this->_mapperUser = new Mapper_User(new Table_User());
    }

    protected function _createBlogPost($obj)
    {
        $blogPost = new BlogPost();

        if ($obj instanceof Zend_Db_Table_Row) {

            $blogPost->setId($obj->id);
            $blogPost->setTitle($obj->title);
            $blogPost->setContent($obj->content);
            $blogPost->setPubDate(new Fiktiv_Date($obj->pubDate));
            $blogPost->setAuthor($this->_mapperUser->findById($obj->userId));

        } else {
            $blogPost = null;
        }

        return $blogPost;
    }


    public function findById($id)
    {
        if (is_numeric($id)) {
            return $this->_createBlogPost($this->_dbTable->find($id)->current());
        }

        return null;
    }

    public function findAllPostByAuthor($user)
    {
        if ($user instanceof  User) {
            return $this->_createBlogPost($this->_dbTable->findByUser($user->getId()));
        }
    }

    public function findAll($limit = null)
    {

        $rows = $this->_dbTable->fetchAll(null, 'pubDate DESC');

        $posts = array();
        
        foreach ($rows as $row) {
            $posts[] = $this->_createBlogPost($row);
        }

        return $posts;
    }
    
}