import { sql } from '@vercel/postgres';

export default async function handler(req, res) {
  const { id } = req.query;

  if (req.method === 'GET') {
    try {
      // For now, return mock data until we implement the collections table
      const mockCardCollections = [
        { id: 1, name: 'My MTG Collection' },
        { id: 4, name: 'Rare Cards' }
      ];

      res.status(200).json(mockCardCollections);
    } catch (error) {
      console.error('Error fetching card collections:', error);
      res.status(500).json({ error: 'Failed to fetch card collections' });
    }
  } else if (req.method === 'POST') {
    try {
      const { collectionId } = req.body;

      // For now, just return success until we implement the collections table
      res.status(200).json({
        success: true,
        message: 'Card added to collection'
      });
    } catch (error) {
      console.error('Error adding card to collection:', error);
      res.status(500).json({ error: 'Failed to add card to collection' });
    }
  } else {
    res.status(405).json({ error: 'Method not allowed' });
  }
}