/**
 * @author Martin Karkowski
 * @email m.karkowski@zema.de
 * @create date 2021-03-11 17:17:50
 * @modify date 2021-03-11 17:17:50
 * @desc [description]
 */

/**
 * Helper Function which will determine the Difference between set01 and set02.
 * If values are in set02 and not in set01 they will be putted into added. If
 * items are in set01 but not in set02 they will be added to removed.
 *
 * @export
 * @template T
 * @param {Set<T>} set01 Base Set
 * @param {Set<T>} set02 Set to compare it with
 * @return {*} 
 */
export function determineDifference<T>(set01:Set<T>, set02:Set<T>): {
  added: Set<T>,
  removed: Set<T>
}{
  const added = new Set<T>();

  const removed = new Set(set02);

  for (const item of removed) {
    if (!set01.has(item)) {
      added.add(item);
    } else {
      // Delete the element, because it is available.
      removed.delete(item);
    }
  }

  return {
    added,
    removed
  };
}