<?php if (!defined('PmWiki')) exit();
/**
  ReindexCategories: Update link targets and page index for PmWiki 2.3.0

  This text is written for PmWiki; 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 3 of the License, or
  (at your option) any later version. See pmwiki.php for full details
  and lack of warranty.

  Copyright 2021-22 Petko Yotov http://5ko.fr
*/
$RecipeInfo['ReindexCategories']['Version'] = '20220122';

$HandleActions['reindexcat'] = 'HandleReindexCategories';
function HandleReindexCategories($pagename) {
  $page = RetrieveAuthPage($pagename, 'admin', true, READPAGE_CURRENT);
  if(!$page) Abort("?No permissions");
  global $PageStartFmt, $PageEndFmt, $PageIndexFile, $EnablePost, $CategoryGroup, $PageIndexTime;
  SDV($PageIndexTime, 10);
  $timeout = time() + $PageIndexTime;

  $opt = array('link'=>"$CategoryGroup.*,-!*");
  $list = MakePageList($pagename, $opt);
  
  $EnablePost = 1;
  $reindex = array();
  $out = array(
    "written"=>array("!! Pages reindexed and written\n"),
    "nochange"=>array("!! Pages requiring no change\n"),
    "skipped"=>array("!! Pages skipped due to timeout (reload the page to continue)\n"),
    );
  foreach($list as $a) {
    if (time() > $timeout) {
      $out['skipped'][] = "# [[{$a['name']}]]\n";
      continue;
    }
    $page = $new = ReadPage($a['name']);
    SaveAttributes($a['name'],$page,$new);
    if (strval(@$new['targets']) != strval(@$page['targets'])) {
      WritePage($a['name'], $new);
      $out['written'][] = "# [[{$a['name']}]]\n";
      $reindex[] = $a['name'];
    }
    else {
      $out['nochange'][] = "# [[{$a['name']}]]\n";
    }
  }
  $result = '';
  foreach($out as $k=>$a) {
    $cnt = count($a)-1;
    $result .= implode("", $a) . "Subtotal $cnt pages.\n\n";
  }
  
  if(count($reindex)) {
    PageIndexQueueUpdate($reindex);
  }
  $result .= "Queued " . count($reindex) . " pages for .pageindex update.\n\n";
  
  $print = array($PageStartFmt, "markup:$result", $PageEndFmt);
  PrintFmt($pagename,$print);
  exit;
}