"""
ThermalOpening module
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
"""
from helpers.configuration import Configuration


class ThermalOpening:
  def __init__(self):
    self._openable_ratio = None
    self._conductivity_w_mk = None
    self._frame_ratio = Configuration().frame_ratio
    self._g_value = None
    self._thickness_m = None
    self._front_side_solar_transmittance_at_normal_incidence = None
    self._back_side_solar_transmittance_at_normal_incidence = None
    self._overall_u_value = None

  @property
  def openable_ratio(self):
    raise Exception('Not implemented')

  @openable_ratio.setter
  def openable_ratio(self, value):
    raise Exception('Not implemented')

  @property
  def conductivity_w_mk(self):
    return self._conductivity_w_mk

  @conductivity_w_mk.setter
  def conductivity_w_mk(self, value):
    # The code to calculate overall_u_value is duplicated here and in thickness_m.
    # This ensures a more robust code that returns the overall_u_value regardless the order the parameters are read.
    self._conductivity_w_mk = value
    if self._overall_u_value is None and self.thickness_m is not None:
      h_i = Configuration().h_i
      h_e = Configuration().h_e
      r_value = 1 / h_i + 1 / h_e + float(self.conductivity_w_mk) / float(self.thickness_m)
      self._overall_u_value = 1 / r_value

  @property
  def frame_ratio(self):
    return self._frame_ratio

  @frame_ratio.setter
  def frame_ratio(self, value):
    self._frame_ratio = value

  @property
  def g_value(self):
    return self._g_value

  @g_value.setter
  def g_value(self, value):
    self._g_value = value

  @property
  def thickness_m(self):
    return self._thickness_m

  @thickness_m.setter
  def thickness_m(self, value):
    # The code to calculate overall_u_value is duplicated here and in conductivity_w_mk.
    # This ensures a more robust code that returns the overall_u_value regardless the order the parameters are read.
    self._thickness_m = value
    if self._overall_u_value is None and self.conductivity_w_mk is not None:
      h_i = Configuration().h_i
      h_e = Configuration().h_e
      r_value = 1 / h_i + 1 / h_e + float(self.conductivity_w_mk) / float(self.thickness_m)
      self._overall_u_value = 1 / r_value

  @property
  def front_side_solar_transmittance_at_normal_incidence(self):
    return self._front_side_solar_transmittance_at_normal_incidence

  @front_side_solar_transmittance_at_normal_incidence.setter
  def front_side_solar_transmittance_at_normal_incidence(self, value):
    self._front_side_solar_transmittance_at_normal_incidence = value

  @property
  def back_side_solar_transmittance_at_normal_incidence(self):
    return self._back_side_solar_transmittance_at_normal_incidence

  @back_side_solar_transmittance_at_normal_incidence.setter
  def back_side_solar_transmittance_at_normal_incidence(self, value):
    self._back_side_solar_transmittance_at_normal_incidence = value

  @property
  def overall_u_value(self):
    return self._overall_u_value

  @overall_u_value.setter
  def overall_u_value(self, value):
    self._overall_u_value = value