#!/usr/bin/env python
#  -*- coding: utf-8 -*-
# *****************************************************************************
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# Module authors:
#   Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
# *****************************************************************************
"""testing devices"""

import random

from secop.devices.core import Readable, Driveable, PARAM
from secop.validators import floatrange, positive


class LN2(Readable):
    """Just a readable.

    class name indicates it to be a sensor for LN2,
    but the implementation may do anything
    """

    def read_value(self, maxage=0):
        return round(100 * random.random(), 1)


class Heater(Driveable):
    """Just a driveable.

    class name indicates it to be some heating element,
    but the implementation may do anything
    """
    PARAMS = {
        'maxheaterpower': PARAM('maximum allowed heater power',
                                validator=floatrange(0, 100), unit='W',
                                ),
    }

    def read_value(self, maxage=0):
        return round(100 * random.random(), 1)

    def write_target(self, target):
        pass


class Temp(Driveable):
    """Just a driveable.

    class name indicates it to be some temperature controller,
    but the implementation may do anything
    """
    PARAMS = {
        'sensor': PARAM("Sensor number or calibration id",
                        validator=str, readonly=True,
                        ),
        'target': PARAM("Target temperature",
                        default=300.0, validator=positive, readonly=False, unit='K',
                        ),
    }

    def read_value(self, maxage=0):
        return round(100 * random.random(), 1)

    def write_target(self, target):
        pass