User:Legoktm/massrename.js

(function( mw, $ ) {

	window.mrg_queue = []; // In-progress queue
	window.mrg_count = 0; // Total count
	window.mrg_done = 0; // Already moved count
	window.mrg_movetoken = null; // Populated later

	function fetch_cat_members( name, cont, callback ) {
		var params ={
			action: 'query',
			rawcontinue: '',
			list: 'categorymembers',
			cmtitle: 'Category:' + name,
			cmnamespace: 6,
			cmlimit: 'max'
		};
		if ( cont !== undefined ) {
			params.cmcontinue = cont;
		}
		( new mw.Api() ).get(params).done( function( data ) {
			if ( data['query-continue'] ) {
				fetch_cat_members(
					name,
					data['query-continue']['categorymembers']['cmcontinue'],
					callback
				);
			}
			callback( data.query.categorymembers );
		});
	}

	function refresh_progressbar() {
		var selector = $('#mrg-progress');
		selector.progressbar('option', 'max', window.mrg_count);
		selector.progressbar('option', 'value', window.mrg_done);
	}

	function rename_file( old, newname, reason, callback ) {
		( new mw.Api() ).post({
			action: 'move',
			from: old,
			to: newname,
			reason: reason,
			movetalk: 1,
			bot: 1,
			token: window.mrg_movetoken
		}, {
			async: false // Don't run parallel requests, be nice to sever kittens!
		}).done( callback );
	}

	function queue() {
		fetch_cat_members( $('#mrg-cat').val(), undefined, function( members ) {
			var old_length = window.mrg_queue.length;
			$.each( members, function( _, val ) {
				window.mrg_queue.push(val.title);
			});
			window.mrg_count += members.length;
			if ( old_length == 0 ) {
				run();
			}
			refresh_progressbar();
		});
	}

	function escapeRegExp(str) {
		// From MDN
		return str.replace(/([.*+?^=!:${}()|\[\]\/\\])/g, "\\$1");
	}

	function run() {
		while ( window.mrg_queue.length > 0 ) {
			var old_name = window.mrg_queue.shift(),
				new_name, find = $('#mrg-find').val(), replace = $('#mrg-rep').val(),
				reason = $('#mrg-son').val();
			new_name = old_name.replace(new RegExp(escapeRegExp(find), 'g'), replace);
			rename_file( old_name, new_name, reason, function( data ) {
				window.mrg_done += 1;
				refresh_progressbar();
			});
		}
	}

	function init() {
		var html = [
			'<div id="mrg-dialog">',
			'<form>',
			'<label for="mrg-cat">Category name (without namespace):</label>',
			'<input type="text" name="mrg-cat" id="mrg-cat"',
			'<label for="mrg-find">Find:</label>',
			'<input type="text" name="mrg-find" id="mrg-find"',
			'<label for="mrg-rep">Replace:</label>',
			'<input type="text" name="mrg-rep" id="mrg-rep"',
			'<label for="mrg-son">Reason:</label>',
			'<input type="text" name="mrg-son" id="mrg-son"',
			'</form>',
			'<div id="mrg-progress"></div>',
			'</div>'
		].join("\n");
		$('#mw-content-text').after($(html)); // Stick it somewhere in the DOM
		mw.util.addCSS('label, input { display: block; }');
		mw.loader.using(['jquery.ui'], function() {
			$('#mrg-dialog').dialog({
				buttons: [
					{
						text: 'Move',
						click: queue
					}
				],
				title: 'Mass Rename Gadget'
			});
			$('#mrg-progress').progressbar({max: 1});
		});

		( new mw.Api() ).getToken( 'move').done( function( token ) {
			window.mrg_movetoken = token;
		});
	}

	function small_init() {
		mw.loader.using('mediawiki.util', function(){
			var portletlink = mw.util.addPortletLink( 'p-cactions', '#', 'Mass Rename', 'ca-mrg', 'Rename stuff');
			$( portletlink).click( function( e ) {
				e.preventDefault();
				init();
			});
		});
	}

	$( small_init() );
}( mediaWiki, jQuery ));