import axios from 'axios';

const OPENFOODFACTS_API = 'https://world.openfoodfacts.org/cgi/search.pl';

export default function setupRoutes(app) {
  app.get('/api/foods/search', async (req, res) => {
    const { q } = req.query;
    
    if (!q) {
      return res.json([]);
    }
    
    try {
      const response = await axios.get(OPENFOODFACTS_API, {
        params: {
          search_terms: q,
          search_simple: 1,
          action: 'process',
          json: 1,
          page_size: 10
        }
      });
      
      const products = response.data.products || [];
      const foods = products.map(p => ({
        name: p.product_name || p.product_name_en || 'Unknown',
        calories: p.nutriments?.['energy-kcal_100g'] || 0,
        protein: p.nutriments?.proteins_100g || 0,
        carbs: p.nutriments?.carbohydrates_100g || 0,
        fat: p.nutriments?.fat_100g || 0
      })).filter(f => f.name !== 'Unknown' && f.calories > 0);
      
      res.json(foods);
    } catch (err) {
      console.error(err);
      res.status(503).json({ error: 'Food search unavailable' });
    }
  });
}