// This function is copy-pasted from
// https://github.com/googlei18n/libphonenumber/blob/master/javascript/i18n/phonenumbers/phonenumberutil.js
// It hasn't been tested. It's not currently exported.
// Carriers codes aren't part of this library.
// Send a PR if you want to add them.
import Metadata from './metadata.js';
import format from './format.js';
import getNumberType from './helpers/getNumberType.js';
import checkNumberLength from './helpers/checkNumberLength.js';
import getCountryCallingCode from './getCountryCallingCode.js';
var REGION_CODE_FOR_NON_GEO_ENTITY = '001';
/**
 * Returns a number formatted in such a way that it can be dialed from a mobile
 * phone in a specific region. If the number cannot be reached from the region
 * (e.g. some countries block toll-free numbers from being called outside of the
 * country), the method returns an empty string.
 *
 * @param {object} number - a `parse()`d phone number to be formatted.
 * @param {string} from_country - the region where the call is being placed.
 * @param {boolean} with_formatting - whether the number should be returned with
 *     formatting symbols, such as spaces and dashes.
 * @return {string}
 */

export default function (number, from_country, with_formatting, metadata) {
  metadata = new Metadata(metadata); // Validate `from_country`.

  if (!metadata.hasCountry(from_country)) {
    throw new Error("Unknown country: ".concat(from_country));
  } // Not using the extension, as that part cannot normally be dialed
  // together with the main number.


  number = {
    phone: number.phone,
    country: number.country
  };
  var number_type = getNumberType(number, undefined, metadata.metadata);
  var is_valid_number = number_type === number;
  var formatted_number;

  if (country === from_country) {
    var is_fixed_line_or_mobile = number_type === 'FIXED_LINE' || number_type === 'MOBILE' || number_type === 'FIXED_LINE_OR_MOBILE'; // Carrier codes may be needed in some countries. We handle this here.

    if (country == 'BR' && is_fixed_line_or_mobile) {
      formatted_number = carrierCode ? formatNationalNumberWithPreferredCarrierCode(number) : // Brazilian fixed line and mobile numbers need to be dialed with a
      // carrier code when called within Brazil. Without that, most of the
      // carriers won't connect the call. Because of that, we return an
      // empty string here.
      '';
    } else if (getCountryCallingCode(country, metadata.metadata) === '1') {
      // For NANPA countries, we output international format for numbers that
      // can be dialed internationally, since that always works, except for
      // numbers which might potentially be short numbers, which are always
      // dialled in national format.
      // Select country for `checkNumberLength()`.
      metadata.country(country);

      if (can_be_internationally_dialled(number) && checkNumberLength(number.phone, metadata) !== 'TOO_SHORT') {
        formatted_number = format(number, 'INTERNATIONAL', metadata.metadata);
      } else {
        formatted_number = format(number, 'NATIONAL', metadata.metadata);
      }
    } else {
      // For non-geographic countries, Mexican and Chilean fixed line and
      // mobile numbers, we output international format for numbers that can be
      // dialed internationally, as that always works.
      if ((country === REGION_CODE_FOR_NON_GEO_ENTITY || // MX fixed line and mobile numbers should always be formatted in
      // international format, even when dialed within MX. For national
      // format to work, a carrier code needs to be used, and the correct
      // carrier code depends on if the caller and callee are from the
      // same local area. It is trickier to get that to work correctly than
      // using international format, which is tested to work fine on all
      // carriers.
      //
      // CL fixed line numbers need the national prefix when dialing in the
      // national format, but don't have it when used for display. The
      // reverse is true for mobile numbers. As a result, we output them in
      // the international format to make it work.
      //
      // UZ mobile and fixed-line numbers have to be formatted in
      // international format or prefixed with special codes like 03, 04
      // (for fixed-line) and 05 (for mobile) for dialling successfully
      // from mobile devices. As we do not have complete information on
      // special codes and to be consistent with formatting across all
      // phone types we return the number in international format here.
      //
      (country === 'MX' || country === 'CL' || country == 'UZ') && is_fixed_line_or_mobile) && can_be_internationally_dialled(number)) {
        formatted_number = format(number, 'INTERNATIONAL');
      } else {
        formatted_number = format(number, 'NATIONAL');
      }
    }
  } else if (is_valid_number && can_be_internationally_dialled(number)) {
    // We assume that short numbers are not diallable from outside their region,
    // so if a number is not a valid regular length phone number, we treat it as
    // if it cannot be internationally dialled.
    return with_formatting ? format(number, 'INTERNATIONAL', metadata.metadata) : format(number, 'E.164', metadata.metadata);
  }

  if (!with_formatting) {
    return diallable_chars(formatted_number);
  }

  return formatted_number;
}

function can_be_internationally_dialled(number) {
  return true;
}
/**
 * A map that contains characters that are essential when dialling. That means
 * any of the characters in this map must not be removed from a number when
 * dialling, otherwise the call will not reach the intended destination.
 */


var DIALLABLE_CHARACTERS = {
  '0': '0',
  '1': '1',
  '2': '2',
  '3': '3',
  '4': '4',
  '5': '5',
  '6': '6',
  '7': '7',
  '8': '8',
  '9': '9',
  '+': '+',
  '*': '*',
  '#': '#'
};

function diallable_chars(formatted_number) {
  var result = '';
  var i = 0;

  while (i < formatted_number.length) {
    var character = formatted_number[i];

    if (DIALLABLE_CHARACTERS[character]) {
      result += character;
    }

    i++;
  }

  return result;
}

function getPreferredDomesticCarrierCodeOrDefault() {
  throw new Error('carrier codes are not part of this library');
}

function formatNationalNumberWithCarrierCode() {
  throw new Error('carrier codes are not part of this library');
}
/**
 * Formats a phone number in national format for dialing using the carrier as
 * specified in the preferred_domestic_carrier_code field of the PhoneNumber
 * object passed in. If that is missing, use the {@code fallbackCarrierCode}
 * passed in instead. If there is no {@code preferred_domestic_carrier_code},
 * and the {@code fallbackCarrierCode} contains an empty string, return the
 * number in national format without any carrier code.
 *
 * <p>Use {@link #formatNationalNumberWithCarrierCode} instead if the carrier
 * code passed in should take precedence over the number's
 * {@code preferred_domestic_carrier_code} when formatting.
 *
 * @param {i18n.phonenumbers.PhoneNumber} number the phone number to be
 *     formatted.
 * @param {string} fallbackCarrierCode the carrier selection code to be used, if
 *     none is found in the phone number itself.
 * @return {string} the formatted phone number in national format for dialing
 *     using the number's preferred_domestic_carrier_code, or the
 *     {@code fallbackCarrierCode} passed in if none is found.
 */


function formatNationalNumberWithPreferredCarrierCode(number) {
  return formatNationalNumberWithCarrierCode(number, carrierCode);
}
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