import { clsx, type ClassValue } from "clsx"
import { twMerge } from "tailwind-merge"

export function cn(...inputs: ClassValue[]) {
  return twMerge(clsx(inputs))
}

export function validarCPFLocal(cpf: string): boolean {
  if (!cpf) return false;
  cpf = cpf.replace(/[^\d]+/g, "");
  if (cpf.length !== 11) return false;
  if (/^(\d)\1{10}$/.test(cpf)) return false;

  let soma = 0, resto = 0;
  for (let i = 1; i <= 9; i++) soma += parseInt(cpf.substring(i - 1, i)) * (11 - i);
  resto = (soma * 10) % 11; if (resto === 10 || resto === 11) resto = 0;
  if (resto !== parseInt(cpf.substring(9, 10))) return false;

  soma = 0;
  for (let i = 1; i <= 10; i++) soma += parseInt(cpf.substring(i - 1, i)) * (12 - i);
  resto = (soma * 10) % 11; if (resto === 10 || resto === 11) resto = 0;
  if (resto !== parseInt(cpf.substring(10, 11))) return false;

  return true;
}