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 decks table
      const mockCardDecks = [
        { id: 1, name: 'MTG Control Deck' },
        { id: 4, name: 'MTG Combo' }
      ];

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

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