phone.js

const formatPhone = (value, useParentheses = true) => {
  if (!value) return 'Não informado';

  const phone = String(value);

  if (phone.length === 8) {
    const isFourThousand =
      phone.substring(0, 4) === '4004' || phone.substring(0, 4) === '4003';
    if (isFourThousand)
      return `${phone.substring(0, 4)} ${phone.substring(4, 8)}`;
    return `${phone.substring(0, 4)}-${phone.substring(4, 8)}`;
  }

  if (phone.length === 9) {
    return `${phone.substring(0, 5)}-${phone.substring(5)}`;
  }

  if (phone.length === 10) {
    return useParentheses
      ? `(${phone.substring(0, 2)}) ${phone.substring(2, 6)}-${phone.substring(6)}`
      : `${phone.substring(0, 2)} ${phone.substring(2, 6)}-${phone.substring(6)}`;
  }

  if (phone.length === 11) {
    const isZeroEight = phone.substring(0, 4) === '0800';
    if (isZeroEight)
      return `${phone.substring(0, 4)} ${phone.substring(4, 7)} ${phone.substring(7)}`;
    return useParentheses
      ? `(${phone.substring(0, 2)}) ${phone.substring(2, 7)}-${phone.substring(7)}`
      : `${phone.substring(0, 2)} ${phone.substring(2, 7)}-${phone.substring(7)}`;
  }

  if (phone.length === 13) {
    const isInternational = phone.startsWith('+55');
    if (isInternational)
      return useParentheses
        ? `${phone.substring(0, 3)} (${phone.substring(3, 5)}) ${phone.substring(5, 9)}-${phone.substring(9)}`
        : `${phone.substring(0, 3)} ${phone.substring(3, 5)} ${phone.substring(5, 9)}-${phone.substring(9)}`;
  }

  if (phone.length === 14) {
    const isInternational = phone.startsWith('+55');
    if (isInternational)
      return useParentheses
        ? `${phone.substring(0, 3)} (${phone.substring(3, 5)}) ${phone.substring(5, 10)}-${phone.substring(10)}`
        : `${phone.substring(0, 3)} ${phone.substring(3, 5)} ${phone.substring(5, 10)}-${phone.substring(10)}`;
  }

  return phone;
};

module.exports = { formatPhone };