const express = require('express');
const router = express.Router();
const supabase = require('../services/supabase');
const { WHATSAPP_TEMPLATES } = require('../lib/india');

// Public share page with OG tags for WhatsApp preview
router.get('/share/:id', async (req, res) => {
  const { data: load } = await supabase.from('loads').select('*').eq('id', req.params.id).single();
  if (!load) return res.status(404).render('pages/404');
  res.render('pages/load-share', { load, layout: false });
});

// Generate WhatsApp share link
router.get('/whatsapp/:id', async (req, res) => {
  const { data: load } = await supabase.from('loads').select('*').eq('id', req.params.id).single();
  if (!load) return res.status(404).json({ error: 'Not found' });
  const link = `${req.protocol}://${req.get('host')}/loadboard/share/${load.id}`;
  const msg = WHATSAPP_TEMPLATES.load_available({ origin: load.origin_city, destination: load.destination_city, budget: load.budget, truck_type: load.truck_type, weight: load.weight_tons, link });
  res.redirect(`https://wa.me/?text=${encodeURIComponent(msg)}`);
});

module.exports = router;