closes #5043

package.json

@@ -61,7 +61,7 @@
     "nodebb-plugin-spam-be-gone": "0.4.10",
     "nodebb-rewards-essentials": "0.0.9",
     "nodebb-theme-lavender": "3.0.14",
-    "nodebb-theme-persona": "4.1.49",
+    "nodebb-theme-persona": "4.1.50",
     "nodebb-theme-vanilla": "5.1.33",
     "nodebb-widget-essentials": "2.0.11",
     "nodemailer": "2.0.0",

public/language/en_GB/groups.json

@@ -59,5 +59,7 @@
 	"membership.reject": "Reject",
 
 	"new-group.group_name": "Group Name:",
-	"upload-group-cover": "Upload group cover"
+	"upload-group-cover": "Upload group cover",
+	"bulk-invite-instructions": "Enter a list of comma separated usernames to invite to this group",
+	"bulk-invite": "Bulk Invite"
 }

public/src/client/groups/details.js

@@ -1,5 +1,5 @@
 "use strict";
-/* globals define, socket, ajaxify, app, bootbox, utils, RELATIVE_PATH */
+/* globals define, socket, ajaxify, app, bootbox, utils, config */
 
 define('forum/groups/details', [
 	'forum/groups/memberlist',
@@ -227,23 +227,41 @@ define('forum/groups/details', [
 	};
 
 	function handleMemberInvitations() {
-		if (ajaxify.data.group.isOwner) {
-			var searchInput = $('[component="groups/members/invite"]');
-			require(['autocomplete'], function(autocomplete) {
-				autocomplete.user(searchInput, function(event, selected) {
-					socket.emit('groups.issueInvite', {
-						toUid: selected.item.user.uid,
-						groupName: ajaxify.data.group.name
-					}, function(err) {
-						if (!err) {
-							ajaxify.refresh();
-						} else {
-							app.alertError(err.message);
-						}
-					});
+		if (!ajaxify.data.group.isOwner) {
+			return;
+		}
+
+		var searchInput = $('[component="groups/members/invite"]');
+		require(['autocomplete'], function(autocomplete) {
+			autocomplete.user(searchInput, function(event, selected) {
+				socket.emit('groups.issueInvite', {
+					toUid: selected.item.user.uid,
+					groupName: ajaxify.data.group.name
+				}, function(err) {
+					if (err) {
+						return app.alertError(err.message);
+					}
+					ajaxify.refresh();
 				});
 			});
-		}
+		});
+
+		$('[component="groups/members/bulk-invite-button"]').on('click', function() {
+			var usernames = $('[component="groups/members/bulk-invite"]').val();
+			if (!usernames) {
+				return false;
+			}
+			socket.emit('groups.issueMassInvite', {
+				usernames: usernames,
+				groupName: ajaxify.data.group.name
+			}, function(err) {
+				if (err) {
+					return app.alertError(err.message);
+				}
+				ajaxify.refresh();
+			});
+			return false;
+		});
 	}
 
 	function removeCover() {

src/socket.io/groups.js

@@ -135,6 +135,28 @@ SocketGroups.issueInvite = isOwner(function(socket, data, callback) {
 	groups.invite(data.groupName, data.toUid, callback);
 });
 
+SocketGroups.issueMassInvite = isOwner(function(socket, data, callback) {
+	if (!data || !data.usernames || !data.groupName) {
+		return callback(new Error('[[error:invalid-data]]'));
+	}
+	var usernames = data.usernames.split(',');
+	usernames = usernames.map(function(username) {
+		return username && username.trim();
+	});
+	user.getUidsByUsernames(usernames, function(err, uids) {
+		if (err) {
+			return callback(err);
+		}
+		uids = uids.filter(function(uid) {
+			return !!uid && parseInt(uid, 10);
+		});
+
+		async.eachSeries(uids, function(uid, next) {
+			groups.invite(data.groupName, uid, callback);
+		}, callback);
+	});
+});
+
 SocketGroups.rescindInvite = isOwner(function(socket, data, callback) {
 	groups.rejectMembership(data.groupName, data.toUid, callback);
 });