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<?php

/*
 +-----------------------------------------------------------------------+
 | program/steps/mail/folders.inc                                        |
 |                                                                       |
 | This file is part of the Roundcube Webmail client                     |
 | Copyright (C) 2005-2009, The Roundcube Dev Team                       |
 | Licensed under the GNU GPL                                            |
 |                                                                       |
 | PURPOSE:                                                              |
 |   Implement folder operations line EXPUNGE and Clear                  |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Thomas Bruederli <roundcube@gmail.com>                        |
 +-----------------------------------------------------------------------+

 $Id$
*/

// only process ajax requests
if (!$OUTPUT->ajax_call)
    return;

$mbox = get_input_value('_mbox', RCUBE_INPUT_POST, true);

// send EXPUNGE command
if ($RCMAIL->action == 'expunge') {

    $success = $IMAP->expunge($mbox);

    // reload message list if current mailbox
    if ($success) {
        $OUTPUT->show_message('folderexpunged', 'confirmation');

        if (!empty($_REQUEST['_reload'])) {
            $OUTPUT->command('set_quota', rcmail_quota_content());
            $OUTPUT->command('message_list.clear');
            $RCMAIL->action = 'list';
            return;
        }
    }
    else {
        rcmail_display_server_error();
    }
}

// clear mailbox
else if ($RCMAIL->action == 'purge')
{
    $delimiter = $IMAP->get_hierarchy_delimiter();
    $trash_regexp = '/^' . preg_quote($CONFIG['trash_mbox'] . $delimiter, '/') . '/';
    $junk_regexp  = '/^' . preg_quote($CONFIG['junk_mbox'] . $delimiter, '/') . '/';

    // we should only be purging trash and junk (or their subfolders)
    if ($mbox == $CONFIG['trash_mbox'] || $mbox == $CONFIG['junk_mbox']
        || preg_match($trash_regexp, $mbox) || preg_match($junk_regexp, $mbox)
    ) {
        $success = $IMAP->clear_mailbox($mbox);

        if ($success) {
            $OUTPUT->show_message('folderpurged', 'confirmation');

            if (!empty($_REQUEST['_reload'])) {
                $OUTPUT->set_env('messagecount', 0);
                $OUTPUT->set_env('pagecount', 0);
                $OUTPUT->command('message_list.clear');
                $OUTPUT->command('set_rowcount', rcmail_get_messagecount_text());
                $OUTPUT->command('set_unread_count', $mbox, 0);
                $OUTPUT->command('set_quota', rcmail_quota_content());
                rcmail_set_unseen_count($mbox, 0);
            }
        }
        else {
            rcmail_display_server_error();
        }
    }
}

$OUTPUT->send();