const SMALL_WORDS = new Set(['da', 'de', 'do', 'das', 'dos', 'e']);

export const removeTrailingSellerId = (value: string) => {
  return value.replace(/\s*#\d+\s*$/, '').trim();
};

export const formatDisplayName = (value: string) => {
  const normalized = String(value || '').replace(/\s+/g, ' ').trim();
  if (!normalized) return '';

  const withoutSellerId = removeTrailingSellerId(normalized);
  const withoutNumericPrefix = withoutSellerId.replace(/^\[\d+\]\s*/, '').trim();
  const isUppercaseName = /[A-ZÁÀÂÃÉÈÊÍÏÓÔÕÖÚÇÑ]/.test(withoutNumericPrefix) &&
    withoutNumericPrefix === withoutNumericPrefix.toUpperCase();

  if (!isUppercaseName) return withoutNumericPrefix;

  return withoutNumericPrefix
    .toLocaleLowerCase('pt-BR')
    .split(' ')
    .map((word, index) => {
      if (index > 0 && SMALL_WORDS.has(word)) return word;
      return word.charAt(0).toLocaleUpperCase('pt-BR') + word.slice(1);
    })
    .join(' ');
};

export const formatColorLabel = (value: string) => {
  const normalized = String(value || '').replace(/\s+/g, ' ').trim();
  if (!normalized) return '';
  if (normalized.toLocaleLowerCase('pt-BR') === 'sem cor') return 'Sem cor';

  return normalized
    .toLocaleLowerCase('pt-BR')
    .split(' ')
    .map((word, index) => {
      if (index > 0 && SMALL_WORDS.has(word)) return word;
      return word.charAt(0).toLocaleUpperCase('pt-BR') + word.slice(1);
    })
    .join(' ');
};