Add more messaging hooks

src/messaging.js

@@ -172,6 +172,14 @@ Messaging.getRecentChats = function (callerUid, uid, start, stop, callback) {
 
 			next(null, { rooms: results.roomData, nextStart: stop + 1 });
 		},
+		function (ref, next) {
+			plugins.fireHook('filter:messaging.getRecentChats', {
+				rooms: ref.rooms,
+				nextStart: ref.nextStart,
+				uid: uid,
+				callerUid: callerUid,
+			}, next);
+		},
 	], callback);
 };
 
@@ -252,11 +260,16 @@ Messaging.canMessageUser = function (uid, toUid, callback) {
 			}, next);
 		},
 		function (results, next) {
-			if (!results.settings.restrictChat || results.isAdmin || results.isFollowing) {
+			if (results.settings.restrictChat && !results.isAdmin && !results.isFollowing) {
-				return next();
+				return next(new Error('[[error:chat-restricted]]'));
 			}
 
-			next(new Error('[[error:chat-restricted]]'));
+			plugins.fireHook('filter:messaging.canMessageUser', {
+				uid: uid,
+				toUid: toUid,
+			}, function (err) {
+				next(err);
+			});
 		},
 	], callback);
 };

src/messaging/data.js

@@ -6,6 +6,7 @@ var S = require('string');
 var db = require('../database');
 var user = require('../user');
 var utils = require('../utils');
+var plugins = require('../plugins');
 
 module.exports = function (Messaging) {
 	Messaging.getMessageField = function (mid, field, callback) {
@@ -128,6 +129,17 @@ module.exports = function (Messaging) {
 					next(null, []);
 				}
 			},
+			function (messages, next) {
+				plugins.fireHook('filter:messaging.getMessagesData', {
+					messages: messages,
+					uid: uid,
+					roomId: roomId,
+					isNew: isNew,
+					mids: mids,
+				}, function (err, data) {
+					next(err, data && data.messages);
+				});
+			},
 		], callback);
 	};
 };

src/messaging/notifications.js

@@ -9,6 +9,7 @@ var emailer = require('../emailer');
 var notifications = require('../notifications');
 var meta = require('../meta');
 var sockets = require('../socket.io');
+var plugins = require('../plugins');
 
 module.exports = function (Messaging) {
 	Messaging.notifyQueue = {};	// Only used to notify a user of a new chat message, see Messaging.notifyUser
@@ -27,6 +28,15 @@ module.exports = function (Messaging) {
 					message: messageObj,
 				};
 
+				plugins.fireHook('filter:messaging.notifyUsersInRoom', data, next);
+			},
+			function (data, next) {
+				if (!data || !data.uids || !data.uids.length) {
+					return next();
+				}
+
+				var uids = data.uids;
+
 				uids.forEach(function (uid) {
 					data.self = parseInt(uid, 10) === parseInt(fromUid, 10) ? 1 : 0;
 					Messaging.pushUnreadCount(uid);