test.coffee

  fetchHrates: (curr) ->
    setHashrate = (userId, name, wrkName, hashrate) ->
      sel =
        userId: userId
        wrkName: wrkName
        currId: curr._id

      if id = Hashrates.findOne(sel, {fields: {_id: 1}})?._id
        Hashrates.update id, $set: {hashrate: hashrate, name: name}
      else
        Hashrates.insert
          currId: curr._id
          userId: userId
          wrkName: wrkName
          hashrate: hashrate
          name: name

    userNames = {}
    userHrates = {}
    for name, hashrate of hRates
      [userId, wrkName] = name.split('.')
      userNames[userId]  ||= h.getNick(Meteor.users.findOne(userId))
      userHrates[userId] ||= 0
      userHrates[userId] += hashrate
      setHashrate(userId, userNames[userId], wrkName, hashrate)

    for userId, hashrate of userHrates
      setHashrate(userId, userNames[userId], '__total__', hashrate)

    sel =
      currId: curr._id
      userId: {$nin: _.keys(userHrates)}
    Hashrates.update sel, {$set: {hashrate: 0}}, {multi: true}