const express = require('express');
const router = express.Router();
var cors = require('cors');

const bcrypt = require('bcrypt');
const randToken = require('rand-token');

const DEBUG = true;

router.param('schuljahrId', function(req, res, next, id) {
  req.schuljahrId = id;
  let query = " select * from schueler where id in (SELECT schuelerid from schueler_schuljahr where schuljahrid in (select id from schuljahr where name = $1)); ";

  if(DEBUG) console.log(query);
	if(DEBUG) console.log(req.schuljahrId);
  req.db.query(query, [req.schuljahrId], (err, rs) => {
    if (err) {
      return next(err)
    }
    req.schuljahr = rs.rows;
    next();
  })
});

/* GET recepies listing. */
router.get('/', function(req, res, next) {
  let query =  " select schuljahr.id as id, schuljahr.name, count(*) as schueler from schueler"+
    " join schueler_schuljahr on schueler_schuljahr.schuelerid = schueler.id"+
    " join schuljahr on schueler_schuljahr.schuljahrid = schuljahr.id"+
    " group by schuljahr.id , schuljahr.name";

  if(DEBUG) console.log(query);
  req.db.query(query, (err, rs) => {
    if (err){
      console.log(query);
      next(err);
    } else {
      let result  = {};
      result['schuljahr'] = rs.rows;
      console.log(result);
      res.status(200).json(result);
    }
  });
});

/* Methods with id */
router.get('/:schuljahrId', function(req, res, next) {
  res.status(200).json(req.schuljahr);
});

module.exports = router;