import { sql } from '../../../../lib/sql.js';

/**
 * Public listing of community-shared custom games. No auth — read-only.
 */
export default async function handler(req, res) {
  try {
    if (req.method !== 'GET') {
      return res.status(405).json({ error: 'Method not allowed' });
    }

    const result = await sql`
      SELECT g.id, g.name, g.description, g.updated_at,
             COUNT(c.id) AS card_count,
             COALESCE(NULLIF(u.username, ''), split_part(u.email, '@', 1)) AS author
      FROM custom_games g
      JOIN users u ON u.id = g.user_id
      LEFT JOIN custom_cards c ON c.custom_game_id = g.id
      WHERE g.is_public = true
      GROUP BY g.id, u.username, u.email
      ORDER BY card_count DESC, g.updated_at DESC
      LIMIT 100
    `;

    return res.status(200).json({ games: result.rows });
  } catch (error) {
    console.error('Public games API error:', error);
    return res.status(500).json({ error: 'Internal server error' });
  }
}