/**
 * @module ol/control/util
 */
import Collection from '../Collection.js';
import Attribution from './Attribution.js';
import Rotate from './Rotate.js';
import Zoom from './Zoom.js';


/**
 * @typedef {Object} DefaultsOptions
 * @property {boolean} [attribution=true] Include
 * {@link module:ol/control/Attribution~Attribution}.
 * @property {module:ol/control/Attribution~Options} [attributionOptions]
 * Options for {@link module:ol/control/Attribution~Attribution}.
 * @property {boolean} [rotate=true] Include
 * {@link module:ol/control/Rotate~Rotate}.
 * @property {module:ol/control/Rotate~Options} [rotateOptions] Options
 * for {@link module:ol/control/Rotate~Rotate}.
 * @property {boolean} [zoom] Include {@link module:ol/control/Zoom~Zoom}.
 * @property {module:ol/control/Zoom~Options} [zoomOptions] Options for
 * {@link module:ol/control/Zoom~Zoom}.
 * @api
 */


/**
 * Set of controls included in maps by default. Unless configured otherwise,
 * this returns a collection containing an instance of each of the following
 * controls:
 * * {@link module:ol/control/Zoom~Zoom}
 * * {@link module:ol/control/Rotate~Rotate}
 * * {@link module:ol/control/Attribution~Attribution}
 *
 * @param {module:ol/control/util~DefaultsOptions=} opt_options
 * Defaults options.
 * @return {module:ol/Collection<module:ol/control/Control>}
 * Controls.
 * @function module:ol/control.defaults
 * @api
 */
export function defaults(opt_options) {

  const options = opt_options ? opt_options : {};

  const controls = new Collection();

  const zoomControl = options.zoom !== undefined ? options.zoom : true;
  if (zoomControl) {
    controls.push(new Zoom(options.zoomOptions));
  }

  const rotateControl = options.rotate !== undefined ? options.rotate : true;
  if (rotateControl) {
    controls.push(new Rotate(options.rotateOptions));
  }

  const attributionControl = options.attribution !== undefined ?
    options.attribution : true;
  if (attributionControl) {
    controls.push(new Attribution(options.attributionOptions));
  }

  return controls;
}