def confirm_reservation(reservation_id):
    """
    This method is used to confirm reservation
    Linked to route /reservation/confirm/{reservation_id} [PUT]
    Args:
        reservation_id (Integer): the restaurant id of the reservation
        restaurant_id (Integer): univocal identifier of the restaurant


    Returns:
        Invalid request if the reservation doesn't exists
        A success message
    """
    reservation = ReservationManager.retrieve_by_id(reservation_id)
    if reservation is None:
        return jsonify({
            'status': 'Bad Request',
            'message': 'There is not reservation with this id'
        }), 400
    reservation.set_is_confirmed()
    ReservationManager.update_reservation(reservation)
    return jsonify({
        'status': 'Success',
        'message': 'Reservation succesfully confirmed'
    }), 200
def confirm_reservation(res_id):
    """
    This method is used to confirm reservation

    Args:
        res_id (Integer): the restaurant id of the reservation

    Returns:
        redirect: redirects to the reservations operator page
    """
    reservation = ReservationManager.retrieve_by_id(res_id)
    reservation.set_is_confirmed()
    ReservationManager.update_reservation(reservation)
    return redirect(url_for('reservation.my_reservations'))
def edit_reservation(reservation_id, customer_id):
    """Allows the customer to edit a single reservation,
    if there's an available table within the opening hours
    of the restaurant.

    Args:
        reservation_id (int): univocal identifier of the reservation
        customer_id (int): univocal identifier of the customer

    Returns:
        Redirects the view to the customer profile page.
    """
    form = ReservationForm()
    reservation = ReservationManager.retrieve_by_customer_id(
        user_id=customer_id)[0]
    restaurant = RestaurantManager.retrieve_by_id(reservation.restaurant_id)

    if request.method == 'POST':
        if form.validate_on_submit():
            start_date = form.data['start_date']
            start_time = form.data['start_time']
            people_number = form.data['people_number']
            start_time_merged = datetime.combine(start_date, start_time)
            table = validate_reservation(restaurant, start_time_merged,
                                         people_number)
            if table != False:
                reservation.set_people_number(people_number)
                reservation.set_start_time(start_time_merged)
                reservation.set_table(table)
                ReservationManager.update_reservation(reservation)
            else:
                flash(
                    "There aren't free tables for that hour or the restaurant is closed"
                )
        else:
            flash("The form is not correct")

    return redirect(url_for('auth.profile', id=customer_id))