var router = require('express').Router(),
    mongoose = require('mongoose'),
    QCM = mongoose.model('QCM'),
    User = mongoose.model('User');
const auth = require('../auth');

// Preload qcm objects on routes with ':type'
router.param('type', function (req, res, next, type) {
    QCM.findOne({ name: type })
        .populate('categories')
        .then(function (qcm) {
            if (!qcm) {
                return res.sendStatus(404);
            }
            req.qcm = qcm;
            return next();
        }).catch(next);
});

/**
 * return all qcm
 */
router.get('/', auth.required, function (req, res, next) {
    Promise.all([
        req.payload ? User.findById(req.payload.id) : null
    ]).then(function (results) {
        var user = results[0];
        if (!user) {
            return res.sendStatus(401);
        }
        return res.json({ qcm: [] });
    }).catch(next);
});

/**
 * return a qcm
 */
router.get('/:type', auth.required, function (req, res, next) {
    Promise.all([
        req.payload ? User.findById(req.payload.id) : null
    ]).then(function (results) {
        var user = results[0];
        if (!user) {
            return res.sendStatus(401);
        }
        return res.json({ qcm: req.qcm.toJSONFor() });
    }).catch(next);
});

module.exports = router;