const express = require('express'),
  router = express.Router(),
  crypto = require('crypto');

/* Simple NO-OP to set session cookie so user-id can use it as the
 * index */
router.get('/', (req, res/*, next*/) => {
  let userId;
  if (!req.cookies.user) {
    userId = crypto.randomBytes(16).toString('hex');
    res.cookie('user', userId);
  } else {
    userId = req.cookies.user;
  }

  console.log(`[${userId.substring(0, 8)}]: Browser hand-shake achieved.`);

  return res.status(200).send({ user: userId });
});

router.get('/', async (req, res/*, next*/) => {
  console.log('GET /groups/', req.session.userId);
  return res.status(200).send(
    [ {
      id: 1,
      ownerId: 1,
      name: 'Beer Tuesday',
      nextEvent: Date.now() + 86400 * 14 * 1000 /* 2 weeks from now */
    } ]
  );
});

router.post('/:id', async (req, res) => {
  const { id } = req.params;

  let userId;
  if (!req.cookies.user) {
    userId = crypto.randomBytes(16).toString('hex');
    res.cookie('user', userId);
  } else {
    userId = req.cookies.user;
  }

  const group = {
    id: 1
  };
  
  if (id) {
    console.log(`[${userId.substring(0,8)}]: Attempting load of ${id}`);
  } else {
    console.log(`[${userId.substring(0,8)}]: Creating new group.`);
  }
  console.log(`[${userId.substring(0,8)}]: ${group.id} loaded.`);

  return res.status(200).send({ id: group.id });
});


module.exports = router;