User:SD0001/deleted-metadata-link.js

// Link to deletedrevisions API output for deleted pages
// And a link to snippet of deleted text for AFD/PROD/G13 deleted content
$.ready.then(function() {
 if (mw.config.get('wgArticleId') === 0 && !!$('.mw-warning-with-logexcerpt:has(".mw-logline-delete")').length) {

  var apiParams = {
         action: 'query',
         prop:'deletedrevisions',
         titles: mw.config.get('wgPageName').replace(/_/g, ' '),
         drvprop: 'user|timestamp|tags|size',
         drvlimit: 'max',
         formatversion: 2
     };
     var link = '/w/api.php?' + $.param(apiParams);
 
     $('.mw-warning-with-logexcerpt:first').before(
         $('<div>').addClass('deleted-metadata-link').append(
             'See ',
             $('<a>').attr('href', link).text('deleted revisions')
          )
     );
     
     mw.loader.using(['mediawiki.api', 'ext.gadget.morebits']).then(function() {
      new mw.Api().get(apiParams).then(function(data) {
       var user = data.query.pages[0].deletedrevisions[0].user; 
       var ts = new Morebits.date(data.query.pages[0].deletedrevisions[0].timestamp); 
       $('.deleted-metadata-link').append(
        ': last edited by ',
        $('<a>').attr('href', '/wiki/User:' + encodeURIComponent(user)).text(user),
        ' at ' + ts.format('HH:mm, D MMMM YYYY') + ' (' + getTimeZoneString() + ')'
       );
       var $latestLogLine = $('.mw-logline-delete').first();
       if ($latestLogLine.length) {
        var $firstLinkInComment = $latestLogLine.find('.comment a').first();
        var date = parseLocalDate($latestLogLine.find('a').first().text());
        if (date.isValid()) {
         if ($firstLinkInComment.is('[href^="/wiki/Wikipedia:Articles_for_deletion"]')) {
          getRevidLinkFromDate('User:SDZeroBot/AfD grid', date).then(function(link) {
           $('.deleted-metadata-link').append(' <a href="' + link + '">Look up snippet in AfD grid</a>');
          });
         } else if ($firstLinkInComment.is('[href^="/wiki/Wikipedia:PROD"]')) {
          getRevidLinkFromDate('User:SDZeroBot/PROD grid', date).then(function(link) {
           $('.deleted-metadata-link').append(' <a href="' + link + '">Look up snippet in PROD grid</a>');
          });
         } else if ($firstLinkInComment.is('[href^="/wiki/Wikipedia:Criteria_for_speedy_deletion#G13"]') || 
          $firstLinkInComment.is('[href^="/wiki/Wikipedia:CSD#G13"]')) {
          getRevidLinkFromDate('User:SDZeroBot/G13 Watch', date, true).then(function(link) {
           $('.deleted-metadata-link').append(' <a href="' + link + '">Look up snippet in G13 Watch</a>');
          });
         } 
        }
       }
      });
     });
 }
});

function parseLocalDate(dateText) {
 var date = new Morebits.date(dateText + ' (UTC)');
 var userTimeZoneOffset = parseInt(mw.user.options.get('timecorrection').split('|')[1]);
 return date.subtract(userTimeZoneOffset, 'minutes');
}

function getTimeZoneString() {
 var timecorrection = -new Date().getTimezoneOffset();
 var negative = false;
 if (timecorrection < 0) {
  timecorrection = -timecorrection;
  negative = true;
 }
 return 'UTC' + (negative ? '–' : '+') + (timecorrection / 60);
}


function getRevidLinkFromDate(page, date, postLog) {
 return new mw.Api().get({
  titles: page,
  prop: 'revisions',
  rvstart: postLog ? date.add(1, 'day').toISOString() : date.toISOString(),
  rvlimit: 1,
  formatversion: 2
 }).then(function(data) {
  return data.query.pages[0].revisions[0].revid;
 }).then(function(revid) {
  return '/w/index.php?title=' + encodeURIComponent(page) + '&oldid=' + revid + 
   '#:~:text=' + encodeURIComponent(Morebits.pageNameNorm); // jump to text in Chrome
 });
}