function UpdatedData(channel) {
  this.channel = channel;
  this.values = [];
};

UpdatedData.prototype.softPush = function(value) {
  for (var i = 0, len = this.values.length; i < len; i++) {
    var item = this.values[i].value;
    if (!this.equals(item, value)) continue;
    if (item.timer) clearTimeout(item.timer);
    this.values[i] = {value: value, copy: duplicate(value)};
    value.timer = setTimeout(timeoutFunc, 12*1000, {elem: this.values[i], channel: this.channel});
    return;
  }
  this.values.push({value: value, copy: duplicate(value)});
};

UpdatedData.prototype.equals = function(first, second) {
  if (first.plugin === second.plugin &&
        first.plugin_instance === second.plugin_instance &&
        first.type === second.type &&
        first.type_instance === second.type_instance) return true;
  return false
};

UpdatedData.prototype.getValues = function() {
  var returned = [];
  for (var i = 0, len = this.values.length; i < len; i++) {
    var item = this.values[i].copy;
    returned.push(item);
  }
  return returned;
};

function timeoutFunc(map) {
  map.elem.value.isValid = map.elem.copy.isValid = false;
  clearTimeout(map.elem.value.timer);
  map.channel.emit('channel_data', JSON.stringify(map.elem.copy));
  map.elem.value.timer = setTimeout(timeoutFunc, 12*1000, map);
};

function duplicate(object) {
  return JSON.parse(JSON.stringify(object));
};


module.exports = UpdatedData;