import { sql } from '../../../../lib/sql.js';
import { getPriceHistoryPoints } from '../../../../lib/pricing/price-history.js';

export default async function handler(req, res) {
  if (req.method !== 'GET') {
    return res.status(405).json({ error: 'Method not allowed' });
  }

  try {
    const cardId = parseInt(req.query.id, 10);
    if (!req.query.id || Number.isNaN(cardId) || cardId <= 0) {
      return res.status(400).json({ error: 'Valid card ID is required' });
    }

    const daysRaw = req.query.days ?? '90';
    const days = parseInt(daysRaw, 10);
    if (Number.isNaN(days) || days < 1 || days > 365) {
      return res.status(400).json({ error: 'days must be between 1 and 365' });
    }

    const cardCheck = await sql`SELECT id FROM cards WHERE id = ${cardId}`;
    if (cardCheck.rows.length === 0) {
      return res.status(404).json({ error: 'Card not found' });
    }

    const points = await getPriceHistoryPoints(cardId, { days });
    return res.status(200).json({ points });
  } catch (err) {
    console.error('[GET /api/cards/[id]/price-history]', err);
    return res.status(500).json({ error: 'Internal server error' });
  }
}