server/services/notifications/online-notification-generator-service.js

   1 'use strict';
   2
   3 var Promise = require('bluebird');
   4 var appEvents = require('gitter-web-appevents');
   5 var resolveUserAvatarUrl = require('gitter-web-shared/avatars/resolve-user-avatar-url');
   6 var troupeDao = require('../daos/troupe-dao').lean;
   7 var userDao = require('../daos/user-dao').lean;
   8 var chatService = require('gitter-web-chats');
   9 var _ = require('lodash');
  10 var debug = require('debug')('gitter:app:online-notification-generator');
  11
  12 function generateChatMessageNotification(troupeId, chatId) {
  13   return Promise.all([
  14     chatService.findByIdLean(chatId, { fromUserId: 1, virtualUser: 1, text: 1 }),
  15     troupeDao.findByIdRequired(troupeId, { uri: 1, oneToOne: true })
  16   ])
  17     .spread(function(chat, troupe) {
  18       if (!chat) throw new Error('Chat not found');
  19
  20       return [
  21         chat,
  22         troupe,
  23         userDao.findById(chat.fromUserId, {
  24           username: 1,
  25           displayName: 1,
  26           gravatarImageUrl: 1,
  27           gravatarVersion: 1
  28         })
  29       ];
  30     })
  31     .spread(function(chat, troupe, fromUser) {
  32       var oneToOne = troupe.oneToOne;
  33       if (!fromUser) throw new Error('User not found');
  34
  35       let displayName = fromUser.displayName;
  36       if (chat.virtualUser) {
  37         displayName = chat.virtualUser.displayName;
  38       }
  39
  40       let avatarUrl = resolveUserAvatarUrl(fromUser, 128);
  41       if (chat.virtualUser) {
  42         avatarUrl = chat.virtualUser.avatarUrl;
  43       }
  44
  45       if (oneToOne) {
  46         return {
  47           text: chat.text,
  48           title: displayName,
  49           link: '/' + fromUser.username,
  50           icon: avatarUrl
  51         };
  52       } else {
  53         return {
  54           text: chat.text,
  55           title: displayName + ' 💬 ' + troupe.uri,
  56           link: '/' + troupe.uri,
  57           icon: avatarUrl
  58         };
  59       }
  60     });
  61 }
  62
  63 // Takes an array of notification items, which looks like
  64 exports.sendOnlineNotifications = Promise.method(function(troupeId, chatId, userIds) {
  65   if (!userIds.length) return;
  66   debug('sendOnlineNotifications to %s users', userIds.length);
  67
  68   return generateChatMessageNotification(troupeId, chatId).then(function(notification) {
  69     _.forEach(userIds, function(userId) {
  70       var n = {
  71         userId: userId,
  72         troupeId: troupeId,
  73         title: notification.title,
  74         text: notification.text,
  75         link: notification.link,
  76         icon: notification.icon,
  77         sound: notification.sound,
  78         chatId: chatId
  79       };
  80
  81       debug('Online notifications: %j', n);
  82       appEvents.userNotification(n);
  83     });
  84   });
  85 });