import { sortBy as lodashSort } from 'lodash';
import angularExpressions from 'angular-expressions';

export function findElement<T, K>(input: T[], attribute: string, value: K): T | string {
  if (!input) return '';

  return input.find((obj: any) => obj[attribute] === value) || '';
}

export function sortBy<T, K>(input: T[], ...fields: any[]) {
  // In our example fields is ["price"]

  // Make sure that if your input is undefined, your
  // output will be undefined as well and will not
  // throw an error
  if (!input) return input;

  return lodashSort(input, fields);
}

export function where<T>(input: T[], query: any) {
  return input.filter(function (item) {
    return angularExpressions.compile(query)(item);
  });
}