02. Song-Encryption-With-Regex

function solve(input) {

  for (const line of input) {
    if (line === 'end') {
      break;
    }

    let [ artist, song ] = line.split(':');

    if (!/^[A-Z][a-z\s\']+$/g.test(artist) || !/^[A-Z\s]+$/g.test(song)) {
      console.log('Invalid input!');
      continue;
    }

    let key = artist.length;
    let encryptedString = '';
    for (const char of line) {
      if (char === ':') {
        encryptedString += '@';
        continue;
      }

      let asciiCode = char.charCodeAt(0);
      if ((asciiCode >= 65 && asciiCode <= 90)) {
        asciiCode += key;
        if (asciiCode > 90) {
          asciiCode -= 26;
        }
      }

      if ((asciiCode >= 97 && asciiCode <= 122)) {
        asciiCode += key;
        if (asciiCode > 122) {
          asciiCode -= 26;
        }
      }

      encryptedString += String.fromCharCode(asciiCode);
    }

    console.log(`Successful encryption: ${encryptedString}`);
  }
}

// solve(
// [
//   'Eminem:VENOM',
//   'Linkin park:NUMB',
//   'Drake:NONSTOP',
//   'Adele:ROLLING IN THE DEEP',
//   'end'
// ]
// );

// solve([
//   'Michael Jackson:ANOTHER PART OF ME',
//   'Adele:ONE AND ONLY',
//   'Guns n\'roses:NOVEMBER RAIN',
//   'Christina Aguilera: HuRt',
//   'end'
// ])