gluon todo

todo.js

(function() {
  setup()
  return {name:"todo"}
})

var key
var actives = []

function setup() {
  db.get('todo:key', function(value) { key = value; bot.say(bot.admin_channel, "todo key loaded") })
}

function go(msg) {
  var irc = false
  if (msg.method == "irc.privmsg") {
    var match = /^todo(\s+(\w+))?/.exec(msg.params.message)
    if(match) {
      irc = true
    }
  }
  
  var clock = false
  if (msg.method == "clocktower") {
    var time = new Date(Date.parse(msg.params.time))
    if(time.getMinutes() % 5 == 0) {
      clock = true
    }
  } 

  if (irc || clock) {
    var me = lastLocation()
    var todos = todolist()
    var near_todos = todos_near(me, todos, 500)
    if(irc) {
      var date = new Date(me.location.date)
      var ago = (new Date().getTime() - date.getTime())/1000/60
      bot.say(msg.params.channel, ago.toFixed(1)+" min ago location")
      todos.forEach(function(todo){
        bot.say(msg.params.channel, todo.object.name + " "+todo.dist.toFixed(0)+"m away")
      })
    }
    near_todos.forEach(function(todo){
      var channel = irc ? msg.params.channel : bot.admin_channel
      bot.say(channel, "donpdonp: your todo of "+todo.object.name + " is " + todo.dist.toFixed(0) +"m away")
    })
  }
}

function todos_near(me, todos, m) {
  return todos.filter(function(todo){
    var dist = pointDistance(me.location,
                             {latitude: todo.object.lat, 
                              longitude: todo.object.lng})
    todo.dist = dist
    return dist < m
  })
}

function lastLocation() {
  var url = 'https://icecondor.com/donpdonp.json?key='+key
  var json = http.get(url)
  var data = JSON.parse(json)
  return data
}

function todolist() {
  var json = http.get('https://rml.donp.org/todo')
  var data = JSON.parse(json)
  return data
}

function numberToRadius(number) {
    return number * Math.PI / 180;
}

// from http://www.movable-type.co.uk/scripts/latlong.html
function pointDistance(la, lb) {
  var lat1 = la.latitude, lon1 = la.longitude
  var lat2 = lb.latitude, lon2 = lb.longitude
  
  var dLat = numberToRadius(lat2 - lat1),
      dLon = numberToRadius(lon2 - lon1),
      a = Math.pow(Math.sin(dLat / 2), 2) + Math.cos(numberToRadius(lat1))
        * Math.cos(numberToRadius(lat2)) * Math.pow(Math.sin(dLon / 2), 2),
      c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    return (6371 * c) * 1000; // returns meters
}