Topic on Extension talk:PrivatePageProtection/Flow

I'm about to remove obsolete ArticleSave-hook an replace it with PageContentSave, but got two problems:

• I find no way to get a ParserOutput() of the Page before it is saved, so I eed to parse the content right here.
• After the article is saved, the page_props-table is not updated. I thought setProperty would do the job, but that does not work. So I had to write the info by hand.

$wgHooks['PageContentSave'][] = 'privateppPageContentSave';

...


function privateppPageContentSave( $wikiPage, $user, $content, $summary, $isMinor, $isWatch, $section, $flags, $status)
{
        # prevent users from saving a page with access restrictions that
        # would lock them out of the page.

        $article=Article::newFromId($wikiPage->getId());
        $text = $content->getNativeData();

#XXX: calling prepareTextForEdit() causes the text to be parsed, because it is not parsed
#     yet:  groups is empty
#       $parserOutput=$article->getParserOutput();
#       $groups = $parserOutput->getProperty('ppp_allowed_groups');

        $editInfo = $article->prepareTextForEdit( $text, null, $user );
        $groups = $editInfo->output->getProperty('ppp_allowed_groups');

        $err = privateppGetAccessError( $groups, $user );
        if ( $err ) {
                $status->fatal('privatepp-lockout-prevented',$groups,0);
                return false;
        }

#XXX does not store the groups into page_props
#        $editInfo->output->setProperty('ppp_allowed_groups', $groups);

        /* set */
        $row = [ 'pp_value'      => $groups ];
        /* where */
        $conditions = [ 'pp_page' => $wikiPage->getId(),
                        'pp_propname' => 'ppp_allowed_groups' ];

        $dbw = wfGetDB( DB_MASTER );

        if(!isset($groups) || strlen($groups) == 0 ) {
                $dbw->delete( 'page_props', $conditions, __METHOD__ );
        } else {
                $dbw->update( 'page_props', $row, $conditions, __METHOD__ );
                        if($result = $dbw->affectedRows() < 1) {
                        $row = [ 'pp_page' => $wikiPage->getId(),
                                 'pp_propname' => 'ppp_allowed_groups',
                                 'pp_value'      => $groups ] ;
                        $dbw->insert( 'page_props', $row, __METHOD__, 'IGNORE' );
                        }
        }

        return true;
}