class Utils {
  /**
   * Get first matched item for a string
   * @param {RegExp} regexp
   * @param {String} ua
   * @return {Array|{index: number, input: string}|*|boolean|string}
   */
  static getFirstMatch(regexp, ua) {
    const match = ua.match(regexp);
    return (match && match.length > 0 && match[1]) || '';
  }

  /**
   * Get second matched item for a string
   * @param regexp
   * @param {String} ua
   * @return {Array|{index: number, input: string}|*|boolean|string}
   */
  static getSecondMatch(regexp, ua) {
    const match = ua.match(regexp);
    return (match && match.length > 1 && match[2]) || '';
  }

  /**
   * Match a regexp and return a constant or undefined
   * @param {RegExp} regexp
   * @param {String} ua
   * @param {*} _const Any const that will be returned if regexp matches the string
   * @return {*}
   */
  static matchAndReturnConst(regexp, ua, _const) {
    if (regexp.test(ua)) {
      return _const;
    }
    return void (0);
  }
}

module.exports = Utils;