// Modified from [[User:Gary King/link intermediate revisions.js]]

if (typeof(unsafeWindow) != 'undefined')
{
	var console = unsafeWindow.console;
	importScriptURI = unsafeWindow.importScriptURI;
	mw = unsafeWindow.mw;
}

mw.loader.using( ['mediawiki.util'], function () {
	$(createDiffMultiLink);
});

function createDiffMultiLink()
{
	if (!mw.util.getParamValue('diff') || !mw.util.getParamValue('oldid')) return false;
	$.get(mw.config.get('wgScriptPath') + '/api.php', { 
             action: 'query', 
             prop: 'revisions', 
             titles: mw.config.get('wgPageName'), 
             rvprop: 'timestamp', 
             rvstartid: mw.util.getParamValue('diff'), 
             rvendid: mw.util.getParamValue('oldid'), 
             rvlimit: '5000',
             format: 'json', 
             indexpageids: 1 
        }, diffMultiCallback);
}
 
function twoDigitPadding(integer)
{
	var string = integer.toString();
	if (string.length == 1) return '0' + integer;
	else return integer;
}
 
function diffMultiCallback(response)
{
	if (!response['query'] || !response['query']['pages'] || response['query']['pageids'][0] == -1) return false;
 
	var diffMultis = $('#bodyContent .diff-multi');
	if (!diffMultis.length) return false;
	var pageId = response['query']['pageids'][0];
	var page = response['query']['pages'][pageId];
	var revisions = page['revisions'];
	if (!revisions) return false;
 
	var oldid = new Date(revisions[revisions.length - 1]['timestamp']);
	oldid = oldid.getUTCFullYear().toString() + twoDigitPadding(oldid.getUTCMonth() + 1).toString() + oldid.getUTCDate().toString() + twoDigitPadding(oldid.getUTCHours() + 1).toString() + twoDigitPadding(oldid.getUTCMinutes() + 1).toString() + twoDigitPadding(oldid.getUTCSeconds() + 1).toString();
	var diff = new Date(revisions[0]['timestamp']);
	diff = diff.getUTCFullYear().toString() + twoDigitPadding(diff.getUTCMonth() + 1).toString() + diff.getUTCDate().toString() + twoDigitPadding(diff.getUTCHours() + 1).toString() + twoDigitPadding(diff.getUTCMinutes() + 1).toString() + twoDigitPadding(diff.getUTCSeconds() + 1).toString();
 
	var diffMulti = diffMultis.eq(0);
	var a = $('<a href="' + mw.config.get('wgScript') + '?title=' + mw.config.get('wgPageName') + '&action=history&offset=' + diff + '&limit=' + revisions.length + '"></a>').append(diffMulti.contents().eq(0));
	diffMulti.append(a);
}