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User:Ainz Ooal Gown/mobilediffrollback.js

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//A script to add a rollback button to a diff page in mobile
if ( mw.config.get('wgCanonicalSpecialPageName') === 'MobileDiff' && mw.config.get('wgRelevantPageIsProbablyEditable') ) {
mw.loader.using(['mediawiki.util', 'mediawiki.api', 'oojs-ui-windows', 'oojs-ui-core', 'oojs-ui.styles.icons-editing-core']).then( function () {
// Api variables and request call		
var api = new mw.Api(),
	callPromise = api.get({
	"action": "query",
	"format": "json",
	"prop": "revisions",
	"list": "users",
	"meta": "tokens",
	"titles": mw.config.get('wgRelevantPageName'),
	"formatversion": "2",
	"rvprop": "ids|user",
	"usprop": "rights",
	"ususers": mw.config.get( 'wgUserName' ),
	"type": "rollback"
});
// When the response is ready, then function
$.when( callPromise, $.ready ).then( function ( results ) {
	var rightsData, lastestRevisionUser, latestRevId, rollbackToken,
		response = results[ 0 ];
// Avoid loading the script if one of the details is not available
	if (
		response.query &&
		response.query.users &&
		response.query.users[0].rights &&
		response.query.tokens &&
		response.query.tokens.rollbacktoken &&
		response.query.pages[0] &&
		response.query.pages[0].revisions[0] &&
		response.query.pages[0].revisions[0].user &&
		response.query.pages[0].revisions[0].revid
		) {
//Get the revid from oldid link
			window.wgRevId = ($('#mw-mf-diffarea > div.mw-mf-diff-info > h3 > a').attr('href')).split('&oldid=')[1];
// Define data variables from API
			rightsData = response.query.users[0].rights;
			latestRevId = response.query.pages[0].revisions[0].revid;
			lastestRevisionUser = response.query.pages[0].revisions[0].user;
			rollbackToken = response.query.tokens.rollbacktoken;
		var mobilerollback = new OO.ui.ButtonWidget({
		label: 'Rollback',
		href: mw.util.getUrl( mw.config.get('wgRelevantPageName'), { action: 'rollback', token: rollbackToken, from: lastestRevisionUser }),
		icon: 'editUndo',
		id: 'mobileRollback',
		title: '"Rollback"  reverts the last contributor’s edit(s) to this page',
		classes: 'mw-rollback-link',
		flags: ['destructive', 'primary']
            });
// Only show the rollback button if the user has rollback right and if the specified revision is latest
			if ( wgRevId == latestRevId && response.query.users[0].rights.indexOf('rollback') !== -1 ) {
$('.minerva__subtitle').append( mobilerollback.$element );
			}
//Construct the confirmation prompt to ask for a summary
var rollbackSummaryPrompt = function(e) {
	e.preventDefault();
	OO.ui.prompt( 'Are you sure you want to rollback edits made to this page by this user?', { textInput: { placeholder: 'Edit summary (optional)' } } ).done( function ( result ) {
		if ( result !== null ) {
		location.href = mw.util.getUrl( mw.config.get('wgRelevantPageName'), { action: 'rollback', token: rollbackToken, from: lastestRevisionUser, summary: result });
		}
});
};
$('#mobileRollback').click(rollbackSummaryPrompt);
//Prompt end
		}
	});
});
}
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