<?php

/**
 * DokuWiki mainscript
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Andreas Gohr <andi@splitbrain.org>
 *
 * @global Input $INPUT
 */

use dokuwiki\ChangeLog\PageChangeLog;
use dokuwiki\Extension\Event;

// update message version - always use a string to avoid localized floats!
$updateVersion = "56.2";

//  xdebug_start_profiling();

if (!defined('DOKU_INC')) define('DOKU_INC', __DIR__ . '/');

// define all DokuWiki globals here (needed within test requests but also helps to keep track)
global $ACT, $INPUT, $QUERY, $ID, $REV, $DATE_AT, $IDX,
       $DATE, $RANGE, $HIGH, $TEXT, $PRE, $SUF, $SUM, $INFO, $JSINFO;


if (isset($_SERVER['HTTP_X_DOKUWIKI_DO'])) {
    $ACT = trim(strtolower($_SERVER['HTTP_X_DOKUWIKI_DO']));
} elseif (!empty($_REQUEST['idx'])) {
    $ACT = 'index';
} elseif (isset($_REQUEST['do'])) {
    $ACT = $_REQUEST['do'];
} else {
    $ACT = 'show';
}

// load and initialize the core system
require_once(DOKU_INC . 'inc/init.php');

//import variables
$INPUT->set('id', str_replace("\xC2\xAD", '', $INPUT->str('id'))); //soft-hyphen
$QUERY = trim($INPUT->str('q'));
$ID = getID();

$REV = $INPUT->int('rev');
$DATE_AT = $INPUT->str('at');
$IDX = $INPUT->str('idx');
$DATE = $INPUT->int('date');
$RANGE = $INPUT->str('range');
$HIGH = $INPUT->param('s');
if (empty($HIGH)) $HIGH = getGoogleQuery();

if ($INPUT->post->has('wikitext')) {
    $TEXT = cleanText($INPUT->post->str('wikitext'));
}
$PRE = cleanText(substr($INPUT->post->str('prefix'), 0, -1));
$SUF = cleanText($INPUT->post->str('suffix'));
$SUM = $INPUT->post->str('summary');


//parse DATE_AT
if ($DATE_AT) {
    $date_parse = strtotime($DATE_AT);
    if ($date_parse) {
        $DATE_AT = $date_parse;
    } else { // check for UNIX Timestamp
        $date_parse = @date('Ymd', (int) $DATE_AT);
        if (!$date_parse || $date_parse === '19700101') {
            msg(sprintf($lang['unable_to_parse_date'], hsc($DATE_AT)));
            $DATE_AT = null;
        }
    }
}

//check for existing $REV related to $DATE_AT
if ($DATE_AT) {
    $pagelog = new PageChangeLog($ID);
    $rev_t = $pagelog->getLastRevisionAt($DATE_AT);
    if ($rev_t === '') {
        //current revision
        $REV = null;
        $DATE_AT = null;
    } elseif ($rev_t === false) {
        //page did not exist
        $rev_n = $pagelog->getRelativeRevision($DATE_AT, +1);
        msg(
            sprintf(
                $lang['page_nonexist_rev'],
                dformat($DATE_AT),
                wl($ID, ['rev' => $rev_n]),
                dformat($rev_n)
            )
        );
        $REV = $DATE_AT; //will result in a page not exists message
    } else {
        $REV = $rev_t;
    }
}

//make infos about the selected page available
$INFO = pageinfo();

// handle debugging
if ($conf['allowdebug'] && $ACT == 'debug') {
    html_debug();
    exit;
}

//send 404 for missing pages if configured or ID has special meaning to bots
if (
    !$INFO['exists'] &&
    ($conf['send404'] || preg_match('/^(robots\.txt|sitemap\.xml(\.gz)?|favicon\.ico|crossdomain\.xml)$/', $ID)) &&
    ($ACT == 'show' || (!is_array($ACT) && str_starts_with($ACT, 'export_')))
) {
    header('HTTP/1.0 404 Not Found');
}

//prepare breadcrumbs (initialize a static var)
if ($conf['breadcrumbs']) breadcrumbs();

// check upstream
checkUpdateMessages();

$tmp = []; // No event data
Event::createAndTrigger('DOKUWIKI_STARTED', $tmp);

//close session
session_write_close();

//do the work (picks up what to do from global env)
act_dispatch();

$tmp = []; // No event data
Event::createAndTrigger('DOKUWIKI_DONE', $tmp);

//  xdebug_dump_function_profile(1);
