admin/manage/groups pagination

src/controllers/admin/groups.js

@@ -1,8 +1,11 @@
 "use strict";
 
 var async = require('async'),
+
+	db = require('../../database'),
 	groups = require('../../groups'),
 	meta = require('../../meta'),
+	pagination = require('../../pagination'),
 	helpers = require('../helpers');
 
 
@@ -10,19 +13,40 @@ var groupsController = {};
 
 
 groupsController.list = function(req, res, next) {
-	groups.getGroupsFromSet('groups:createtime', req.uid, 0, -1, function(err, groups) {
+	var page = parseInt(req.query.page, 10) || 1;
+	var groupsPerPage = 20;
+	var pageCount = 0;
+
+	async.waterfall([
+		function(next) {
+			db.getSortedSetRevRange('groups:createtime', 0, -1, next);
+		},
+		function(groupNames, next) {
+			groupNames = groupNames.filter(function(name) {
+				return name.indexOf(':privileges:') === -1 && name !== 'registered-users';
+			});
+			pageCount = Math.ceil(groupNames.length / groupsPerPage);
+
+			var start = (page - 1) * groupsPerPage;
+			var stop =  start + groupsPerPage - 1;
+
+			groupNames = groupNames.slice(start, stop + 1);
+			groups.getGroupsData(groupNames, next);
+		},
+		function(groupData, next) {
+			groupData.forEach(groups.escapeGroupData);
+			next(null, {groups: groupData, pagination: pagination.create(page, pageCount)});
+		}
+	], function(err, data) {
 		if (err) {
 			return next(err);
 		}
 
-		groups = groups.filter(function(group) {
-			return group && group.name.indexOf(':privileges:') === -1 && group.name !== 'registered-users';
-		});
-
 		res.render('admin/manage/groups', {
-			groups: groups,
-			yourid: req.user.uid
-		});
+	 		groups: data.groups,
+	 		pagination: data.pagination,
+	 		yourid: req.user.uid
+	 	});
 	});
 };