export function numberToWords(num: number): string {
  if (num === 0) return 'zero';

  const belowTwenty = [
    '', 'one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight', 'nine', 'ten',
    'eleven', 'twelve', 'thirteen', 'fourteen', 'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen'
  ];
  const tens = ['', '', 'twenty', 'thirty', 'forty', 'fifty', 'sixty', 'seventy', 'eighty', 'ninety'];
  const thousands = ['', 'thousand', 'million', 'billion'];

  function helper(n: number): string {
    if (n === 0) return '';
    else if (n < 20) return belowTwenty[n] + ' ';
    else if (n < 100) return tens[Math.floor(n / 10)] + ' ' + helper(n % 10);
    return belowTwenty[Math.floor(n / 100)] + ' hundred ' + helper(n % 100);
  }

  let word = '';
  let i = 0;

  while (num > 0) {
    if (num % 1000 !== 0) {
      word = helper(num % 1000) + thousands[i] + ' ' + word;
    }
    num = Math.floor(num / 1000);
    i++;
  }

  return word.trim();
}

export function toPascalCase(strings: string[]): string {
  if (!Array.isArray(strings)) return '';

  function capitalize(word: string): string {
    return word.charAt(0).toUpperCase() + word.slice(1).toLowerCase();
  }

  return strings.map(capitalize).join('');
}


export function convertNumberToPascalCase(num: number): string {
  return toPascalCase(numberToWords(num).split(' '));
}

export function formatBytes(bytes: number): string {
  if (bytes === 0) return '0 Bytes';

  const sizes = ['Bytes', 'KB', 'MB', 'GB', 'TB'];
  const i = Math.floor(Math.log(bytes) / Math.log(1024));
  const formattedSize = (bytes / Math.pow(1024, i)).toFixed(2);

  return `${formattedSize} ${sizes[i]}`;
}

export function createStyleSheet(id: string): HTMLStyleElement {
  const style = document.createElement('style');
  style.setAttribute('id', id);
  style.setAttribute('rel', 'stylesheet');
  style.setAttribute('type', 'text/css');
  document.head.appendChild(style);
  return style;
}