fraction.io/app/packages/fraction-posts/lib/setHeat.next.js

Your personalized community aggregator.

'use strict';

var setHeat = () => {
  var allArr = Posts.find({
    oldPoints: {
      $gt: 1
  }}).fetch();

  var savePost = (post) => {
    var now = new Date();
    var secondsAgo = Math.abs(now - (new Date(post.createdAt))) / 1000;
    var hoursAgo = secondsAgo / 60 / 60;
    var points = (post.oldPoints - 1);
    var decay = Math.pow(hoursAgo + 2, 1.5);
    Posts.update({ _id: post._id },{
      $set: {
        heat: points / decay
    }});
  };

  console.log('Setting post heat for ' + allArr.length + ' posts');

  _(allArr).forEach(savePost);
};

Meteor.setInterval(setHeat, 60 * 1000);