story-generator/src/features/syllables/utils/syllableSplitter.ts

const VOWELS = new Set(['a', 'e', 'i', 'o', 'u', 'á', 'é', 'í', 'ó', 'ú', 'â', 'ê', 'ô', 'ã', 'õ']);

export function splitIntoSyllables(word: string): string[] {
  const syllables: string[] = [];
  let currentSyllable = '';
  
  for (let i = 0; i < word.length; i++) {
    const char = word[i].toLowerCase();
    currentSyllable += word[i];
    
    if (VOWELS.has(char)) {
      if (i < word.length - 1 && !VOWELS.has(word[i+1].toLowerCase())) {
        syllables.push(currentSyllable);
        currentSyllable = '';
      } else if (i === word.length - 1) {
        syllables.push(currentSyllable);
      }
    }
  }
  
  return syllables.length > 0 ? syllables : [word];
}