regard/lib/managers/abstract.js

Sugar-interface to access multiple data sources.

var _ = require('lodash');

exports = module.exports = AbstractManager;

function AbstractManager() {
  if (!(this instanceof AbstractManager)) {
    return new AbstractManager();
  }

  this.data = [];
  this.index = [];
}

AbstractManager.prototype.add = function (item) {
  var key = item.key;

  if (!_.isString(key) || _.isEmpty(key)) {
    throw new Error('A key was expected');
  }

  if (this.has(key)) {
    //throw new Error('A same item already exists');
    _.remove(this.data, function (value) {
      return value.key === key;
    });
  }

  this.data.push(item);
  this.index.push(key);

  return this;
};

AbstractManager.prototype.get = function (key) {
  return _.find(this.data, 'key', key);
};

AbstractManager.prototype.has = function (key) {
  return _.includes(this.index, key);
};