import { PhoneNumberUtil, PhoneNumberFormat, PhoneNumber } from 'google-libphonenumber';

const phoneUtil = PhoneNumberUtil.getInstance();

interface PhoneValidationResult {
  inputPhone: string;
  isoAlpha2Code: string;
  countryCode?: number;
  nationalNumber: string;
  internationalNumber: string;
  e164: string;
}

export function isPhoneValid(phone: string, isoAlpha2Code: string): PhoneValidationResult {
  const number: PhoneNumber = phoneUtil.parse(phone, isoAlpha2Code);
  const existPhone: boolean = phoneUtil.isValidNumber(number);

  if (!existPhone) {
    throw new Error('Invalid phone');
  }

  return {
    inputPhone: phone,
    isoAlpha2Code,
    countryCode: number.getCountryCode(),
    nationalNumber: phoneUtil.format(number, PhoneNumberFormat.NATIONAL),
    internationalNumber: phoneUtil.format(number, PhoneNumberFormat.INTERNATIONAL),
    e164: phoneUtil.format(number, PhoneNumberFormat.E164).replace('+', ''),
  };
}

export function formatPhone(phone: string, isoAlpha2Code: string): PhoneValidationResult {
  return isPhoneValid(phone, isoAlpha2Code);
}