<?php

if (IN_serendipity !== true) {
    die ("Don't hack!");
}

// Load possible language files.
@serendipity_plugin_api::load_language(dirname(__FILE__));

class serendipity_event_custom_permalinks extends serendipity_event
{
    var $ids = array();

    function introspect(&$propbag)
    {
        global $serendipity;

        $propbag->add('name', PLUGIN_EVENT_CUSTOM_PERMALINKS);
        $propbag->add('description', PLUGIN_EVENT_CUSTOM_PERMALINKS_DESC);
        $propbag->add('event_hooks',  array(
                                        'genpage'                           => true,
                                        'backend_publish'                   => true,
                                        'css_backend'                       => true,
                                        'entry_display'                     => true,
                                        'backend_save'                      => true,
                                        'frontend_display:html:per_entry'   => true,
                                        'backend_display'                   => true));

        $propbag->add('author', 'Garvin Hicking');
        $propbag->add('version', '1.17.1');
        $propbag->add('requirements',  array(
            'serendipity' => '1.6',
            'smarty'      => '2.6.7',
            'php'         => '5.1.0'
        ));
        $propbag->add('stackable', false);
        $propbag->add('groups', array('BACKEND_EDITOR'));
    }

    function show($id)
    {
        global $serendipity;

        $id = (int)$id;

        if (!headers_sent()) {
            header('HTTP/1.0 200');
            header('Status: 200 OK');
        }

        serendipity_track_referrer($id);
        $GLOBALS['track_referer'] = false;

        $_GET['serendipity']['action'] = 'read';
        $_GET['serendipity']['id']     = $id;

        $serendipity['plugindata']['smartyvars']['view'] = $serendipity['view'] = 'entry';

        $title = serendipity_db_query("SELECT title FROM {$serendipity['dbPrefix']}entries WHERE id=$id", true);
        $serendipity['head_title']    = $title[0];
        $serendipity['head_subtitle'] = $serendipity['blogTitle'];
    }

    function generate_content(&$title)
    {
        $title = PLUGIN_EVENT_CUSTOM_PERMALINKS;
    }

    function event_hook($event, &$bag, &$eventData, $addData = null)
    {
        global $serendipity;

        $hooks = &$bag->get('event_hooks');

        if (isset($hooks[$event])) {

            switch($event) {

                case 'genpage':

                    $args = implode('/', serendipity_getUriArguments($eventData, true));
                    if ($serendipity['rewrite'] != 'none') {
                        $nice_url = $serendipity['serendipityHTTPPath'] . $args;
                    } else {
                        $nice_url = $serendipity['serendipityHTTPPath'] . $serendipity['indexFile'] . '?/' . $args;
                    }

                    $myi = strpos($nice_url, '&');
                    if ($myi != 0 && $serendipity['rewrite'] != 'none') {
                        $nice_url = substr($nice_url, 0, $myi);
                    }

                    $myi = strpos($nice_url2, '&');
                    if ($myi != 0 && $serendipity['rewrite'] != 'none') {
                        $nice_url2 = substr($nice_url2, 0, $myi);
                    }

                    $query = "SELECT entryid FROM {$serendipity['dbPrefix']}entryproperties WHERE property = 'permalink'
                                     AND value IN ('" . serendipity_db_escape_string($nice_url) . "', '/" . serendipity_db_escape_string($nice_url) . "',
                                                   '" . serendipity_db_escape_string($nice_url2) . "', '/" . serendipity_db_escape_string($nice_url2) . "')";

                    $retid = serendipity_db_query($query);
                    if (is_array($retid) && !empty($retid[0]['entryid'])) {
                        $this->show($retid[0]['entryid']);
                    }
                    break;

                case 'entry_display':
                    $ids = array();
                    if (!is_array($eventData)) {
                        break;
                    }

                    foreach ($eventData AS $entry) {
                        $ids[] = $entry['id'];
                    }

                    $query = "SELECT entryid,value FROM {$serendipity['dbPrefix']}entryproperties WHERE entryid IN (" . implode(', ', $ids) . ") AND property = 'permalink'";
                    $retval = serendipity_db_query($query);
                    if (is_array($retval)) {
                        foreach((array)$retval AS $pl) {
                            $this->ids[$pl['entryid']] = $pl['value'];
                        }
                    }
                    break;

                case 'frontend_display:html:per_entry':
                    // Reset message for 404 error handling which is now overriden
                    $serendipity['content_message'] = '';
                    // 2023: PHP8 threw undefined constant error for UNKNOWN. put the word in inverted commas. Works with PHP8.2
                    if (isset($this->ids[$eventData['id']]) && stristr($this->ids[$eventData['id']], '/' . 'UNKNOWN') === FALSE) {
                        $eventData['link'] =  $this->ids[$eventData['id']];
                        $urldata = parse_url($serendipity['baseURL']);
                        $eventData['rdf_ident'] = $urldata['scheme'] . '://' . $urldata['host'] . $this->ids[$eventData['id']];
                    }
                    break;

                case 'css_backend':
                    // append css
                    $eventData .= '

/* serendipity_event_custom_permalink backend start */

#properties_permalink,
meta_properties_permalink {
    width: 100%;
}
#meta_properties_permalink .msg_notice {
    margin-top: 0;
    margin-bottom: 0;
}

/* serendipity_event_custom_permalink backend end */

';
                    break;

                case 'backend_display':
                    $permalink = !empty($serendipity['POST']['permalink']) ? $serendipity['POST']['permalink'] : '';

                    if (!empty($eventData['id']) && empty($permalink)) {
                        $query = "SELECT value FROM {$serendipity['dbPrefix']}entryproperties WHERE entryid = '" . $eventData['id'] . "' AND property = 'permalink'";
                        $retval = serendipity_db_query($query);
                        if (is_array($retval) && !empty($retval[0]['value'])) {
                            $permalink = $retval[0]['value'];
                        }
                    }

                    $title = $eventData['title'];
                    if (empty($title)) {
                        $title = 'UNKNOWN'; // 2023: PHP8 threw undefined constant error. put the word in inverted commas
                    }

                    if (empty($permalink)) {
                        $permalink = $serendipity['rewrite'] != 'none'
                                   ? $serendipity['serendipityHTTPPath'] . 'permalink/' . serendipity_makeFilename($title) . '.html'
                                   : $serendipity['serendipityHTTPPath'] . $serendipity['indexFile'] . '?/permalink/' . serendipity_makeFilename($title) . '.html';
                    }
                    if ($serendipity['version'][0] > 1) {
?>
                    <fieldset id="edit_entry_custompermalinks" class="entryproperties_custompermalinks" style="margin: 1em 0">
                        <span class="wrap_legend">
                            <legend>
                                <?php echo PLUGIN_EVENT_CUSTOM_PERMALINKS_PL; ?>
                                <button class="toggle_info button_link active" type="button" data-href="#meta_properties_permalink">
                                    <span class="icon-info-circled" aria-hidden="true"></span><b>i</b><span class="visuallyhidden"> <?php echo MORE; ?></span>
                                </button>
                            </legend>
                        </span>
                        <div class="form_field">
                            <input id="properties_permalink" class="input_textbox" type="text" name="serendipity[permalink]" value="<?php echo (function_exists('serendipity_specialchars') ? serendipity_specialchars($permalink) : htmlspecialchars($permalink, ENT_COMPAT, LANG_CHARSET)); ?>" />
                        </div>
                        <div id="meta_properties_permalink" class="clearfix xfield_info additional_info">
                            <span class="msg_notice"><span class="icon-info-circled" aria-hidden="true"></span> <?php echo PLUGIN_EVENT_CUSTOM_PERMALINKS_PL_DESC; ?></span>
                        </div>
                    </fieldset>
<?php
                    } else {
?>
                    <fieldset style="margin: 5px">
                        <legend><?php echo PLUGIN_EVENT_CUSTOM_PERMALINKS_PL; ?></legend>
                        <div><?php echo PLUGIN_EVENT_CUSTOM_PERMALINKS_PL_DESC; ?><br /><br /></div>
                        <label for="permalink" title="<?php echo htmlentities(PLUGIN_EVENT_CUSTOM_PERMALINKS_PL, ENT_COMPAT, LANG_CHARSET); ?>"><?php echo PLUGIN_EVENT_CUSTOM_PERMALINKS_PL; ?>:</label> <input class="input_textbox" type="text" style="width: 60%" name="serendipity[permalink]" id="permalink" value="<?php echo (function_exists('serendipity_specialchars') ? serendipity_specialchars($permalink) : htmlspecialchars($permalink, ENT_COMPAT, LANG_CHARSET)); ?>" />
                    </fieldset>
<?php
                    }
                    break;

                case 'backend_publish':
                case 'backend_save':
                    if (!isset($serendipity['POST']['permalink']) || !isset($eventData['id'])) {
                        return true;
                    }
                    serendipity_db_query("DELETE FROM {$serendipity['dbPrefix']}entryproperties WHERE entryid = '" . $eventData['id'] . "' AND property = 'permalink'");
                    serendipity_db_query("INSERT INTO {$serendipity['dbPrefix']}entryproperties (entryid, value, property) VALUES ('" . $eventData['id'] . "', '" . serendipity_db_escape_string($serendipity['POST']['permalink']) . "', 'permalink')");
                    break;

                default:
                    return false;

            }
            return true;
        } else {
            return false;
        }
    }

}

/* vim: set sts=4 ts=4 expandtab : */
?>