/**
 * SmartyPants - Smart typography for web content
 * Converts straight quotes to curly quotes, dashes to em-dashes, etc.
 * Based on the original SmartyPants by John Gruber
 */

const SmartyPants = (function() {
  // Regular expressions for matching
  const quotes = {
    double: {
      opening: /(\s|^)"(\w)/g,
      closing: /(\w)"/g,
      openingNested: /(\s|^)'(\w)/g,
      closingNested: /(\w)'/g
    },
    single: {
      opening: /(\s|^)'(\w)/g,
      closing: /(\w)'/g
    }
  };
  
  const dashes = {
    emDash: /--/g,
    enDash: / - /g
  };
  
  const ellipses = /\.\.\./g;
  
  /**
   * Process text with SmartyPants transformations
   */
  function process(text) {
    if (!text) return text;
    
    let result = text;
    
    // Transform double quotes
    result = result.replace(quotes.double.opening, '$1"$2');
    result = result.replace(quotes.double.closing, '$1"');
    
    // Transform single quotes
    result = result.replace(quotes.single.opening, '$1\u2018$2');
    result = result.replace(quotes.single.closing, '$1\u2019');
    
    // Transform apostrophes (same as closing single quotes)
    result = result.replace(/(\w)'(\w)/g, '$1\u2019$2');
    
    // Transform dashes
    result = result.replace(dashes.emDash, '—');
    result = result.replace(dashes.enDash, ' – ');
    
    // Transform ellipses
    result = result.replace(ellipses, '…');
    
    return result;
  }
  
  return {
    process: process
  };
})();

// Make available in browser and Node.js environments
if (typeof module !== 'undefined' && module.exports) {
  module.exports = SmartyPants;
}