PLT-6610 sending websocket event for last channel viewed (#6787)

app/channel.go

@@ -266,7 +266,7 @@ func createGroupChannel(userIds []string, creatorId string) (*model.Channel, *mo
 	}
 
 	if len(users) != len(userIds) {
-		return nil, model.NewAppError("CreateGroupChannel", "api.channel.create_group.bad_user.app_error", nil, "user_ids=" + model.ArrayToJson(userIds), http.StatusBadRequest)
+		return nil, model.NewAppError("CreateGroupChannel", "api.channel.create_group.bad_user.app_error", nil, "user_ids="+model.ArrayToJson(userIds), http.StatusBadRequest)
 	}
 
 	group := &model.Channel{
@@ -1091,6 +1091,14 @@ func UpdateChannelLastViewedAt(channelIds []string, userId string) *model.AppErr
 		return result.Err
 	}
 
+	if *utils.Cfg.ServiceSettings.EnablChannelViewedMessages {
+		for _, channelId := range channelIds {
+			message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_CHANNEL_VIEWED, "", "", userId, nil)
+			message.Add("channel_id", channelId)
+			go Publish(message)
+		}
+	}
+
 	return nil
 }
 
@@ -1150,6 +1158,12 @@ func ViewChannel(view *model.ChannelView, userId string, clearPushNotifications
 		return result.Err
 	}
 
+	if *utils.Cfg.ServiceSettings.EnablChannelViewedMessages {
+		message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_CHANNEL_VIEWED, "", "", userId, nil)
+		message.Add("channel_id", view.ChannelId)
+		go Publish(message)
+	}
+
 	return nil
 }
 

app/diagnostics.go

@@ -188,6 +188,7 @@ func trackConfig() {
 		"allow_edit_post":                               *utils.Cfg.ServiceSettings.AllowEditPost,
 		"post_edit_time_limit":                          *utils.Cfg.ServiceSettings.PostEditTimeLimit,
 		"enable_user_typing_messages":                   *utils.Cfg.ServiceSettings.EnableUserTypingMessages,
+		"enable_channel_viewed_messages":                *utils.Cfg.ServiceSettings.EnablChannelViewedMessages,
 		"time_between_user_typing_updates_milliseconds": *utils.Cfg.ServiceSettings.TimeBetweenUserTypingUpdatesMilliseconds,
 		"cluster_log_timeout_milliseconds":              *utils.Cfg.ServiceSettings.ClusterLogTimeoutMilliseconds,
 	})

app/post.go

@@ -48,6 +48,12 @@ func CreatePostAsUser(post *model.Post) (*model.Post, *model.AppError) {
 			if result := <-Srv.Store.Channel().UpdateLastViewedAt([]string{post.ChannelId}, post.UserId); result.Err != nil {
 				l4g.Error(utils.T("api.post.create_post.last_viewed.error"), post.ChannelId, post.UserId, result.Err)
 			}
+
+			if *utils.Cfg.ServiceSettings.EnablChannelViewedMessages {
+				message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_CHANNEL_VIEWED, "", "", post.UserId, nil)
+				message.Add("channel_id", post.ChannelId)
+				go Publish(message)
+			}
 		}
 
 		return rp, nil

app/web_conn.go

@@ -226,8 +226,12 @@ func (webCon *WebConn) ShouldSendEvent(msg *model.WebSocketEvent) bool {
 	}
 
 	// If the event is destined to a specific user
-	if len(msg.Broadcast.UserId) > 0 && webCon.UserId != msg.Broadcast.UserId {
-		return false
+	if len(msg.Broadcast.UserId) > 0 {
+		if webCon.UserId == msg.Broadcast.UserId {
+			return true
+		} else {
+			return false
+		}
 	}
 
 	// if the user is omitted don't send the message