router.post('/', function(req, res) {
    console.log('Creating a new list');

    try {
        var list = JSON.parse(req.body.list);
    } catch (e) {
        console.error(e);
        res.status(400).send('Could not parse request data');
        return;
    }

    console.log('list', list);

    if (!list.name || list.name === '') {
        console.error('Name missing or empty');
        res.status(400).send('Name missing or empty');
        return;
    }

    if (!list.users || list.users.length < 1) {
        console.error('Users missing or empty');
        res.status(400).send('Users missing or empty');
        return;
    }

    if (!list.tasks) {
        console.error('Tasks missing');
        res.status(400).send('Tasks missing');
        return;
    }

    var db = req.db;
    var lists = db.get('lists');

    // Write list
    var writtenList;
    lists.insert(list, function(err, doc) {
        if (err) {
            console.log(err);
            res.status(500).send('DB write failed');
        } else {
            console.log('Inserted list', doc);
            writtenList = doc;
            var users = db.get('users');
            writtenList.users.forEach(function(v, i) {
                console.log('Getting current lists for user', v);
                var userLists;
                users.find({_id: v}, function(err, docs) {
                    if (err) {
                        console.log(err);
                        res.status(500).send('DB read failed');
                    } else {
                        console.log('Found docs', docs);
                        if (docs.length !== 1) {
                            console.error('Found too many or no users');
                            res.status(400).send('Error while fetching user');
                        } else {
                            userLists = docs[0].lists;
                            console.log('Old list array', userLists);
                            console.log('Adding new list to user', v);
                            userLists.push(writtenList._id);
                            console.log('New list array', userLists);
                            users.update({_id: v}, { $set: { 'lists': userLists } }, function(err, docs) {
                                if (err) {
                                    console.error('User update failed');
                                    res.status(500).send('User update failed');
                                } else {
                                    console.log('Updated', docs);
                                    res.jsonp(writtenList);
                                }
                            });
                        }
                    }
                });
            });
        }
    });

});