01. Email Validator js exam

function solve(args) {
  let email = args.shift();
  let lineInput = args.shift();

  while (lineInput !== 'Complete') {
    const [command, arg1] = lineInput.split(' ');

    switch (command) {
      case 'Make':

        if (arg1 === 'Upper') {
          email = email.toUpperCase();
          console.log(email);
        } else if (arg1 === 'Lower') {
          email = email.toLowerCase();
          console.log(email);
        }


        break;
      case 'GetDomain':
        const srt = email.slice(0, email.length - Number(arg1));
        const lastCount = email.slice(srt.length - 1 + 1);
        console.log(lastCount);
        break;

      case 'GetUsername':

        if (email.includes('@')) {
          const takeIndexStr = email.indexOf('@');
          const takeUserName = email.slice(0, takeIndexStr);
          console.log(takeUserName);
        } else {
          console.log(`The email ${email} doesn't contain the @ symbol.`);
        }

        break;

      case 'Replace':
        while (email.includes(arg1)) {
          email = email.replace(arg1, '-');
        }
        console.log(email);
        break;

      case 'Encrypt':
        const toAcii = email.split('')
          .map((chr) => chr.charCodeAt())
          .join(' ');

        console.log(toAcii);
        break;


      default:
        break;
    }


    lineInput = args.shift();
  }
}