<?php
/*  Copyright © 2009-2010 Transposh Team (website : http://transposh.org)
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	This program is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with this program; if not, write to the Free Software
 *	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/*
 * This file handles various AJAX needs of our plugin
*/
// The following headers allow for cross-domain posting here, which is useful for some weird sites
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
header('Access-Control-Allow-Headers: X-Requested-With');
header('Access-Control-Max-Age: 86400');

// Exit early so the page isn't fully loaded for options requests
if (strtolower($_SERVER['REQUEST_METHOD']) == 'options') {
    exit();
}

// we need wordpress and us...
$root = $_SERVER["DOCUMENT_ROOT"];
$self = $_SERVER["SCRIPT_NAME"];
// go down 4 dirs...
for ($i = 0;$i<5;$i++) $self = substr($self,0,-strlen(strrchr($self,"/")));
if (!@require_once $root.$self.'/wp-load.php') {
    // fallback plan
    require_once('../../../../wp-load.php');
}
//  the case of posted translation
if (isset($_POST['translation_posted'])) {
    // supercache invalidation of pages - first lets find if supercache is here
    if (function_exists('wp_super_cache_init')) {
        //Now, we are actually using the referrer and not the request, with some precautions
        $GLOBALS['wp_cache_request_uri'] = substr($_SERVER['HTTP_REFERER'],stripos($_SERVER['HTTP_REFERER'],$_SERVER['HTTP_HOST'])+strlen($_SERVER[''].$_SERVER['HTTP_HOST']));
        $GLOBALS['wp_cache_request_uri'] = preg_replace('/[ <>\'\"\r\n\t\(\)]/', '', str_replace( '/index.php', '/', str_replace( '..', '', preg_replace("/(\?.*)?$/", '', $GLOBALS['wp_cache_request_uri'] ) ) ) );
        // get some supercache variables
        extract(wp_super_cache_init());
        logger(wp_super_cache_init());
        // this is hackery for logged in users, a cookie is added to the request somehow and gzip is not correctly set, so we forcefully fix this
        if (!$cache_file) {
            $GLOBALS['wp_cache_gzip_encoding'] = gzip_accepted();
            unset($_COOKIE[key($_COOKIE)]);
            extract(wp_super_cache_init());
            logger(wp_super_cache_init());
        }

        $dir = get_current_url_supercache_dir();
        // delete possible files that we can figure out, not deleting files for other cookies for example, but will do the trick in most cases
        $cache_fname = "{$dir}index.html";
        logger ("attempting delete of supercache: $cache_fname");
        @unlink( $cache_fname);
        $cache_fname = "{$dir}index.html.gz";
        logger ("attempting delete of supercache: $cache_fname");
        @unlink( $cache_fname);
        logger("attempting delete of wp_cache: $cache_file");
        @unlink($cache_file);
        logger("attempting delete of wp_cache_meta: $meta_pathname");
        @unlink($meta_pathname);

        // go at edit pages too
        $GLOBALS['wp_cache_request_uri'] .="?edit=1";
        extract(wp_super_cache_init());
        logger(wp_super_cache_init());
        logger("attempting delete of edit_wp_cache: $cache_file");
        @unlink($cache_file);
        logger("attempting delete of edit_wp_cache_meta: $meta_pathname");
        @unlink($meta_pathname);

    }

    if ($_POST['translation_posted'] == 2) {
        $my_transposh_plugin->database->update_translation();
    }
}
// getting translation history
elseif (isset($_GET['tr_token_hist'])) {
    $my_transposh_plugin->database->get_translation_history($_GET['tr_token_hist'], $_GET['lang']);
}
// getting phrases of a post (if we are in admin)
elseif (isset($_GET['tr_phrases_post'])) {
    $my_transposh_plugin->postpublish->get_post_phrases($_GET['post']);
}
// set the cookie with ajax, no redirect needed
elseif (isset($_GET['tr_cookie'])) {
    setcookie('TR_LNG',get_language_from_url($_SERVER['HTTP_REFERER'], $my_transposh_plugin->home_url),time()+90*24*60*60,COOKIEPATH,COOKIE_DOMAIN);
    logger ('Cookie '.get_language_from_url($_SERVER['HTTP_REFERER'], $my_transposh_plugin->home_url));
}
// Set our cookie and return (if no js works - or we are in the default language)
elseif (isset($_GET['tr_cookie_bck'])) {
    setcookie('TR_LNG',get_language_from_url($_SERVER['HTTP_REFERER'], $my_transposh_plugin->home_url),time()+90*24*60*60,COOKIEPATH,COOKIE_DOMAIN);
    if ($_SERVER['HTTP_REFERER']) {
        wp_redirect($_SERVER['HTTP_REFERER']);
    } else {
        wp_redirect($my_transposh_plugin->home_url);
    }
}
// Start full translation
elseif (isset($_GET['translate_all'])) {
    // get all ids in need of translation
    $page_ids = $wpdb->get_col("SELECT ID FROM $wpdb->posts WHERE post_type='page' OR post_type='post' ORDER BY ID DESC");
    // only high capabilities users can...
    if (!current_user_can('edit_post',$page_ids[0])) return;
    echo json_encode($page_ids);
}
// Start backup on demand
elseif (isset($_GET['backup'])) {
    $my_transposh_plugin->run_backup();
}

?>