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<?php

if (!defined('NEWS_POSITION_NORMAL')) { // No idea why this is needed, but clones get already defined errors.
    define('NEWS_POSITION_NORMAL', 0);
    define('NEWS_POSITION_STICKY', 1);
    define('NEWS_POSITION_STICK_TO_TOP', 9);
}

/**
 * zenpage news class
 *
 * @author Malte Müller (acrylian)
 * @package plugins
 * @subpackage zenpage
 */
class ZenpageNews extends ZenpageItems {

    public $manage_rights = MANAGE_ALL_NEWS_RIGHTS;
    public $manage_some_rights = ZENPAGE_NEWS_RIGHTS;
    public $view_rights = ALL_NEWS_RIGHTS;
    public $categories = NULL;
    public $index = NULL;
    protected $is_public = null;

    function __construct($titlelink, $allowCreate = NULL) {
        if (is_array($titlelink)) {
            $titlelink = $titlelink['titlelink'];
        }
        $new = $this->instantiate('news', array('titlelink' => $titlelink), 'titlelink', true, empty($titlelink), $allowCreate);
        $this->exists = $this->loaded;
    }

    /**
     * Gets the categories assigned to an news article
     *
     * @param int $article_id ID od the article
     * @return array
     */
    function getCategories() {
        if (is_null($this->categories)) {
            $this->categories = query_full_array("SELECT * FROM " . prefix('news_categories') . " as cat," . prefix('news2cat') . " as newscat WHERE newscat.cat_id = cat.id AND newscat.news_id = " . $this->getID() . " ORDER BY cat.titlelink", false, 'title');
            if (!$this->categories) {
                $this->categories = array();
            }
        }
        return $this->categories;
    }

    function setCategories($categories) {
        $result = query('DELETE FROM ' . prefix('news2cat') . ' WHERE `news_id`=' . $this->getID());
        $result = query_full_array("SELECT * FROM " . prefix('news_categories') . " ORDER BY titlelink");
        foreach ($result as $cat) {
            if (in_array($cat['titlelink'], $categories)) {
                query("INSERT INTO " . prefix('news2cat') . " (cat_id, news_id) VALUES ('" . $cat['id'] . "', '" . $this->getID() . "')");
            }
        }
    }

    /**
     * Returns true if the article is sticky
     *
     * @return bool
     */
    function getSticky() {
        return $this->get('sticky');
    }

    function setSticky($v) {
        $this->set('sticky', $v);
    }

    function getTruncation() {
        return $this->get('truncation');
    }

    function setTruncation($v) {
        $this->set('truncation', $v);
    }

    /**
     * duplicates an article
     * @param string $newtitle the title for the new article
     */
    function copy($newtitle) {
        $newID = $newtitle;
        $id = parent::copy(array('titlelink' => $newID));
        if (!$id) {
            $newID = $newtitle . ':' . seoFriendly(date('Y-m-d_H-i-s'));
            $id = parent::copy(array('titlelink' => $newID));
        }
        if ($id) {
            $newobj = new ZenpageNews($newID);
            $newobj->setTitle($newtitle);
            $newobj->setTags($this->getTags());
            $newobj->setShow(0);
            $newobj->setDateTime(date('Y-m-d H:i:s'));
            $newobj->save();
            $categories = array();
            foreach ($this->getCategories() as $cat) {
                $categories[] = $cat['cat_id'];
            }
            $result = query_full_array("SELECT * FROM " . prefix('news_categories') . " ORDER BY titlelink");
            foreach ($result as $cat) {
                if (in_array($cat['id'], $categories)) {
                    query("INSERT INTO " . prefix('news2cat') . " (cat_id, news_id) VALUES ('" . $cat['id'] . "', '" . $id . "')");
                }
            }
            return $newobj;
        }
        return false;
    }

    /**
     * Deletes an news article from the database
     *
     */
    function remove() {
        if ($success = parent::remove()) {
            if ($this->id) {
                $success = query("DELETE FROM " . prefix('obj_to_tag') . "WHERE `type`='news' AND `objectid`=" . $this->getID());
                $success = $success && query("DELETE FROM " . prefix('news2cat') . " WHERE news_id = " . $this->getID()); // delete the category association
                $success = $success && query("DELETE FROM " . prefix('comments') . " WHERE ownerid = " . $this->getID() . ' AND type="news"'); // delete any comments
            }
        }
        return $success;
    }

    /**
     * Checks if an article is in a password protected category and returns TRUE or FALSE
     * NOTE: This function does not check if the password has been entered! Use checkAccess() for that.
     *
     * @param bool $only set to true to know if the news article belongs only to protected categories (i.e. it is protected)
     *
     * @return array
     */
    function inProtectedCategory($only = false) {
        $categories = $this->getCategories();
        if (!empty($categories)) {
            foreach ($categories as $cat) {
                $catobj = new ZenpageCategory($cat['titlelink']);
                $password = $catobj->getPassword();
                if (!empty($password)) {
                    if (!$only)
                        return true;
                } else {
                    if ($only)
                        return false;
                }
            }
            return $only;
        }
        return false;
    }
    
    /**
     * returns true if the article resides only in protected categories
     */
    function isProtected() {
        return $this->inProtectedCategory(true);
    }
    
    /**
     * Returns true if this article is published and in any published category
     * 
     * @since Zenphoto 1.5.5
     * 
     * @return bool
     */
    function isPublic() {
        if (is_null($this->is_public)) {
            if(!$this->isPublished()) {
                return $this->is_public = false;
            }
            $categories = $this->getCategories();
            $catcheck = true;
            if (count($categories) > 0) {
                foreach ($categories as $cat) {
                    $catobj = new ZenpageCategory($cat);
                    if (!$catobj->isPublic()) {
                        $catcheck = $catcheck && false;
                    }
                }
                return $this->is_public = $catcheck;
            }
            return $this->is_public = true;
        } else {
            return $this->is_public;
        }
    }

    /**
     *
     * returns true if the article exists in any published category (or in no categories)
     * 
     * @deprecated Zenphoto 2.0 Use if($obj->isPublic() || zp_loggedin(ALL_NEWS_RIGHTS)) { … } for a equivalent check instead.
     */
    function categoryIsVisible() {
        if (zp_loggedin(ALL_NEWS_RIGHTS))
            return true;
        return $this->isPublic();
    }
    
    
    /**
     * See if a guest is logged on to the news category.
     * Note: If any belonging category is plublic or he is logged on, then success.
     * @param $hint
     * @param $show
     */
    function checkforGuest(&$hint = NULL, &$show = NULL) {
        if (!parent::checkForGuest()) {
            return false;
        }
        $categories = $this->getCategories();
        if (empty($categories)) { //    cannot be protected!
            return 'zp_public_access';
        } else {
            $access = array();
            foreach ($categories as $cat) {
                $catobj = new ZenpageCategory($cat['titlelink']);
                $guestaccess = $catobj->checkforGuest($hint, $show);
                if($guestaccess) {
                    $access[] = 1;
                } else {
                    $access[] = 0;
                }
            }
            if(in_array(0, $access)) { // if there is only one protected category, no public access
                return false;
            } else {
                return 'zp_public_access';
            }
        }
        return false;
    } 

    /**
     * Checks if user is news author
     * @param bit $action what the caller wants to do
     *
     * returns true of access is allowed
     */
    function isMyItem($action) {
        global $_zp_current_admin_obj;
        if (parent::isMyItem($action)) {
            return true;
        }
        if (zp_loggedin($action)) {
            if (GALLERY_SECURITY != 'public' && $this->isPublic() && $action == LIST_RIGHTS) { //$this->getShow() && $action == LIST_RIGHTS) {
                return LIST_RIGHTS;
            }
            if ($_zp_current_admin_obj->getUser() == $this->getAuthor()) {
                return true; // he is the author
            }
            if ($action == LIST_RIGHTS && !$this->isProtected() && $this->isPublic() || zp_loggedin(ALL_NEWS_RIGHTS)) {   //$this->categoryIsVisible()
                return true;
            }
            // A user actually cannot have rights for an article without categories assigned
            if(!$this->getCategories()) {
                return false;
            }
            $mycategories = $_zp_current_admin_obj->getObjects('news');
            if (!empty($mycategories)) {
                foreach ($this->getCategories() as $category) {
                    $cat = new ZenpageCategory($category['titlelink']);
                    // only override item visibility if we "own" the category and this article is in an owned category
                    if ($cat->isMyItem(ZENPAGE_NEWS_RIGHTS)) { 
                        return true;
                    } 
                }
            }
            //echo "no category so for sure not my item!";          
        }
        return false;
    }

    /**
     * Checks if an article is in a category and returns TRUE or FALSE
     *
     * @param string $catlink The titlelink of a category
     * @return bool
     */
    function inNewsCategory($catlink) {
        if (!empty($catlink)) {
            $categories = $this->getCategories();
            $count = 0;
            foreach ($categories as $cat) {
                if ($catlink == $cat['titlelink']) {
                    $count = 1;
                    break;
                }
            }
            return $count == 1;
        } else {
            return false;
        }
    }

    /**
     * Checks if an article is in a sub category of $catlink
     *
     * @param string $catlink The titlelink of a category
     * @return bool
     */
    function inSubNewsCategoryOf($catlink) {
        if (!empty($catlink)) {
            $categories = $this->getCategories();
            $count = 0;
            foreach ($categories as $cat) {
                $catobj = new ZenpageCategory($cat['titlelink']);
                $parentid = $catobj->getParentID();
                $parentcats = $catobj->getParents();
                foreach ($parentcats as $parentcat) {
                    if ($catlink == $parentcat) {
                        $count = 1;
                        break;
                    }
                }
            }
            return $count == 1;
        } else {
            return false;
        }
    }

    /**
     * Returns the url to a news article
     *
     *
     * @return string
     */
    function getLink() {
        return zp_apply_filter('getLink', rewrite_path(_NEWS_ . '/' . $this->getTitlelink() . '/', '/index.php?p=news&title=' . $this->getTitlelink()), $this, NULL);
    }

    /**
     * Get the index of this article
     *
     * @return int
     */
    function getIndex() {
        global $_zp_zenpage, $_zp_current_zenpage_news;
        if ($this->index == NULL) {
            $articles = $_zp_zenpage->getArticles(0, NULL, true);
            for ($i = 0; $i < count($articles); $i++) {
                $article = $articles[$i];
                if ($this->getTitlelink() == $article['titlelink']) {
                    $this->index = $i;
                    break;
                }
            }
        }
        return $this->index;
    }

    /**
     * Return the previous article
     *
     * @return object
     */
    function getPrevArticle() {
        global $_zp_zenpage, $_zp_current_zenpage_news;
        $index = $this->getIndex();
        $article = $_zp_zenpage->getArticle($index - 1);
        return $article;
    }

    /**
     * Returns the next article.
     *
     * @return object
     */
    function getNextArticle() {
        global $_zp_zenpage, $_zp_current_zenpage_news;
        $index = $this->getIndex();
        $article = $_zp_zenpage->getArticle($index + 1);
        return $article;
    }

    /**
     * Returns the page number in the news loop
     *
     * @return int
     */
    function getNewsLoopPage() {
        $index = $this->getIndex();
        return floor(($index / ZP_ARTICLES_PER_PAGE) + 1);
    }

}
// zenpage news class end
?>