import { computed } from '@ember/object';

// An unattractive but robust way to encode query params
export const serialize = arr => (arr.length ? JSON.stringify(arr) : '');

export const deserialize = str => {
  try {
    return JSON.parse(str)
      .compact()
      .without('');
  } catch (e) {
    return [];
  }
};

// A computed property macro for deserializing a query param
export const deserializedQueryParam = qpKey =>
  computed(qpKey, function() {
    return deserialize(this.get(qpKey));
  });