// Utility functions for handling image URLs

/**
 * Convert Google Drive share URL to local image path
 * @param {string} url - Google Drive share URL
 * @param {number} mediaId - Media ID from database
 * @param {string} plantName - Plant name for fallback
 * @returns {string} - Local image path or fallback
 */
export const convertGoogleDriveUrl = (url, mediaId, plantName) => {
  if (!url) return null;
  
  // If we have media ID, try to use local downloaded image
  if (mediaId) {
    // Create filename similar to Python script
    const safePlantName = plantName 
      ? plantName.replace(/[^\w\s-]/g, '').trim().replace(/[-\s]+/g, '_')
      : 'unknown';
    
    const localPath = `/images/${mediaId}_${safePlantName}.jpg`;
    return localPath;
  }
  
  // Fallback to original URL processing (shouldn't happen now)
  if (url.includes('drive.google.com')) {
    const viewMatch = url.match(/\/file\/d\/([a-zA-Z0-9-_]+)/);
    if (viewMatch) {
      const fileId = viewMatch[1];
      return `https://drive.google.com/uc?export=view&id=${fileId}`;
    }
  }
  
  return url;
};

/**
 * Get image URL with fallback - updated for local images
 * @param {string} url - Original image URL
 * @param {number} mediaId - Media ID from database
 * @param {string} plantName - Plant name
 * @returns {string} - Processed image URL
 */
export const getImageUrl = (url, mediaId, plantName) => {
  if (!url) return null;
  return convertGoogleDriveUrl(url, mediaId, plantName);
};

/**
 * Create a placeholder image URL
 * @param {number} width - Image width
 * @param {number} height - Image height
 * @param {string} text - Text to display
 * @returns {string} - Data URL for placeholder image
 */
export const getPlaceholderImage = (width = 300, height = 200, text = 'No Image') => {
  return `data:image/svg+xml;base64,${btoa(`
    <svg width="${width}" height="${height}" viewBox="0 0 ${width} ${height}" fill="none" xmlns="http://www.w3.org/2000/svg">
      <rect width="${width}" height="${height}" fill="#f3f4f6"/>
      <rect x="20" y="20" width="${width-40}" height="${height-40}" rx="8" fill="#e5e7eb"/>
      <text x="${width/2}" y="${height/2}" font-family="Arial, sans-serif" font-size="16" text-anchor="middle" dominant-baseline="central" fill="#6b7280">${text}</text>
    </svg>
  `)}`;
};