source: extensions/CommentEditor/classes/ce_plugin.class.php @ 3432

<?php
/* $Id: ce_plugin.class.php,v 1.5 2009/06/18 14:48:18 Criss Exp $ */
if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');

ce_require_class("CE_Comment");

/**
 * CE_Plugin class
 */
class CE_Plugin {

    private static $url_prefix = null;


    function CE_Plugin() {
        if (null == self::$url_prefix) {
            self::$url_prefix = get_root_url() . 'index.php?' . CE_ACTION . '=';
        }
    }

    /* ************************ */
    /* ** Trigger management ** */
    /* ************************ */

    /**
     * Check whether the page contains comments.
     * Add an edit link if user is allowed to edit comment
     */
    function loc_begin_page_header() {
        global $template;
        $all_comments = &$template->get_template_vars('comments');
        for ($i=0; $i < count($all_comments) ; $i++) {
            if (isset($all_comments[$i]) and is_array($all_comments[$i])) {
                $comment = &$all_comments[$i];
                if (isset($comment['U_DELETE'])) {
                    $comment['U_ID'] =  $this->getCommentId($comment['U_DELETE']);
                    $comment['DATE'] .= ' - <a href="' . $this->getEditUrlPrefix();
                    $comment['DATE'] .= $comment['U_ID'] . '">';
                    $comment['DATE'] .= 'Edit';
                    $comment['DATE'] .= '</a>';
                }
            }
        }
    }

    /**
     * Check whether a comment edit or update is requested.
     */
    function loc_end_index() {
        $comment_id = "";
        $action = $this->isCommentEdit($_SERVER['QUERY_STRING'], $comment_id);
        switch ($action) {
            case CE_ACTION_EDIT:
                // Edit
                $this->editComment($comment_id);
                break;
            case CE_ACTION_UPDATE:
                $this->updateComment();
                break;
            case CE_ACTION_NONE:
                // Not an edit mode
                break;
        }
    }

    /* ************************ */
    /* ** Private functions  ** */
    /* ************************ */

    function getTemplate($p_template = 'edit.tpl') {
        return realpath(CE_TEMPLATE . $p_template);
    }

    function isCommentEdit($p_query_string, &$p_comment_id) {
        $params = split('\&', $p_query_string);
        $action = CE_ACTION_NONE;
        $comment_id = "";
        foreach ($params as $current_param) {
            $key_value = split('=', $current_param);
            if (isset($key_value[1])) {
                if (CE_ACTION == $key_value[0] && CE_ACTION_NONE == $action) {
                    //CE_ACTION_EDIT == $lKeyVal[1]
                    switch ($key_value[1]) {
                        case CE_ACTION_EDIT:
                        case CE_ACTION_UPDATE:
                            $action = $key_value[1];
                            break;
                    }
                }
                if (CE_ID == $key_value[0]) {
                    $comment_id = $key_value[1];
                }
            }
        }
        if (CE_ACTION_EDIT == $action) {
            $p_comment_id = $comment_id;
        }
        return $action;
    }

    function isEditAllowed($p_comment) {
        if (is_admin()) {
            return true;
        }
        global $user;
        return $p_comment->isAuthor($user['username']);
    }

    function editComment($p_comment_id) {
        //  Include language advices
        load_language('plugin.lang', CE_PATH);

        $comment = new CE_Comment($p_comment_id);
        $infos = array();
        if (!$this->isEditAllowed($comment)) {
            // Not allowed
            array_push($infos, l10n('comment_edit_forbidden'));
            $this->displayError($infos);
            return;
        }
        $this->displayComment($comment);
    }

    function updateComment() {
        //  Include language advices
        load_language('plugin.lang', CE_PATH);

        $infos = array();
        if (!isset($_POST['commentid'])) {
            array_push($infos, l10n('comment_access_invalid'));
            $this->displayError($infos);
            return;
        }
        $comment = new CE_Comment($_POST['commentid']);

        if (!$this->isEditAllowed($comment)) {
            array_push($infos, l10n('comment_edit_forbidden'));
            $this->displayError($infos);
            return;
        }
        if (isset($_POST['author'])) {
            $comment->setInfo('author', $_POST['author']);
        } else if (isset($_POST['freeauthorck'])) {
            // Free author
            $new_author = trim(stripslashes($_POST['freeauthor']));
            $new_author = $comment->validateAuthor($new_author);
            $comment->setInfo('author', $new_author);
        }

        $comment_array = array(
            'author'        => trim( stripslashes($comment->getInfo('author')) ),
            'content'       => trim( stripslashes($_POST['content']) ),
            'image_id'      => $_POST['imageid'],
            'comment_id'    => $_POST['commentid'],
        );
        $comment_action = update_user_comment($comment_array, @$_POST['key'], $infos );

        switch ($comment_action) {
            case 'moderate':
              array_push( $infos, l10n('comment_to_validate') );
            case 'validate':
              array_push( $infos, l10n('comment_added'));
              break;
            case 'reject':
              set_status_header(403);
              array_push($infos, l10n('comment_not_added') );
              break;
            default:
              trigger_error('Invalid comment action '.$comment_action, E_USER_WARNING);
        }
        // allow plugins to notify what's going on
        trigger_action( 'user_comment_insertion',
                        array_merge($comment_array, array('action'=>$comment_action)));
        if ($comment_action=='reject') {
            $this->displayError($infos);
        } else {
            $this->displayInfo($infos);
        }
    }

    function getCommentId($p_string_delete) {
        $comment_id = "";
        $elements = split('\?', $p_string_delete);
        if (count($elements) > 1) {
            $elem_var = split('\&amp;', $elements[1]);
            foreach ($elem_var as $var) {
                $key_value = split('=', $var);
                if (count($key_value) > 1) {
                    switch ($key_value[0]) {
                        case 'comment_to_delete':
                        case 'delete':
                            $comment_id = $key_value[1];
                            break;
                        default:
                            // No ID
                    }
                }
            }
        }
        return $comment_id;
    }

    function displayError($p_error) {
        $this->displayMessage($p_error, CE_TYPE_ERROR, CE_ERRORS);
    }

    function displayInfo($p_info) {
        $this->displayMessage($p_info, CE_TYPE_INFO, CE_INFOS);
    }

    function displayMessage($p_message, $p_type, $p_image) {
        //  Include language advices
        load_language('plugin.lang', CE_PATH);

        $messages = array();
        foreach ($p_message as $message) {
            array_push($messages, $message);
        }
        $message_array = array(
            'TYPE'  => $p_type,
            'IMG'   => $p_image,
            'TITLE' => l10n($p_type),
            'MSG'   => $messages
        );

        global $template;
        $template->set_filenames(array('ce_message'=>$this->getTemplate('message.tpl')));
        $template->block_html_head( '',
                                    '<link rel="stylesheet" type="text/css" href="'.CE_STYLE.'">',
                                    $smarty, $repeat);
        $begin = 'PLUGIN_INDEX_CONTENT_BEFORE';
        $template->assign('message', $message_array);
        $old_begin = $template->get_template_vars($begin);
        $template->assign($begin, $template->parse('ce_message', true));
        $template->concat($begin, $old_begin);
    }

    function displayComment($p_comment) {
        global $template;

        $template->set_filenames(array('ce_edit'=>$this->getTemplate()));
        $template->block_html_head( '',
                                    '<link rel="stylesheet" type="text/css" href="'.CE_STYLE.'">',
                                    $smarty, $repeat);
        $begin = 'PLUGIN_INDEX_CONTENT_BEFORE';
        $end = 'PLUGIN_INDEX_CONTENT_AFTER';
        $template->assign($begin, null);
        $template->assign($end, null);
        $tplComment = array(
            'CONTENT'   => $p_comment->getInfo('content'),
            'KEY'       => $p_comment->getInfo('comment_id'),
            'AUTHOR'    => $p_comment->getInfo('author'),
            'IMAGE'     => $p_comment->getInfo('image_id'),
            'DISABLED'  => !is_admin(),
            'USERS'     => CE_Comment::getUsers(),
            'F_ACTION'  => $this->getUpdateUrlPrefix(),
            'FREEAUTHOR'=> ($p_comment->isKnownAuthor())?'':'checked="checked"'
        );
        $template->assign('comment', $tplComment);
        $template->concat($begin, $template->parse('ce_edit', true));
    }

    function getEditUrlPrefix() {
        return self::$url_prefix . CE_ACTION_EDIT . '&' . CE_ID . '=';
    }

    function getUpdateUrlPrefix() {
        return self::$url_prefix . CE_ACTION_UPDATE;
    }

}
?>