meetup-notification.js

var sender = 'lichess';
var threadName = "Lichess meetup in London, November 24th";

var sent = 0;

db.user4.find({
  'profile.location':'montreal',
  enabled:true,
  seenAt:{$gt:new Date(Date.now() - 1000 * 3600 * 24 * 30)}
}).forEach(user => {
  if (db.notify.count({
    notifies: user._id,
    'content.type': 'privateMessage',
    'content.thread.name': threadName
  })) return;
  var threadId = Math.random().toString(36).substring(2, 10);
  db.notify.insert({
    _id: Math.random().toString(36).substring(2, 10),
    notifies: user._id,
    content: {
      type: 'privateMessage',
      senderId: sender,
      thread: {
        id: threadId,
        name: threadName
      },
      text: threadName
    },
    read: false,
    createdAt: new Date()
  });
  print(user.username);
  db.m_thread.insert({
    _id: threadId,
    "name": threadName,
    "createdAt": new Date(),
    "updatedAt": new Date(),
    "posts": [
      {
        "id": Math.random().toString(36).substring(2, 10),
        "text": "You are most welcome to join us!\n\nhttps://lichess.org/blog/W-nQzxYAAC8AaUUo/lichess-london-meetup-on-the-24th-november\n\nYou received this message because you connected from the UK, Ireland, France or Belgium.",
        "isByCreator": true,
        "isRead": false,
        "createdAt": new Date()
      }
    ],
    "creatorId": sender,
    "invitedId": user._id,
    "visibleByUserIds": [
      "lichess",
      user._id
    ],
    "mod": true
  });
  sent++;
});

print('Sent ' + sent);