"""
Storey module
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Pilar Monsalvete Alvarez de Uribarri pilar.monsalvete@concordia.ca
"""

from __future__ import annotations
from typing import List
import numpy as np

from city_model_structure.building_demand.surface import Surface
from city_model_structure.building_demand.thermal_boundary import ThermalBoundary
from city_model_structure.building_demand.thermal_zone import ThermalZone
import helpers.constants as cte


class Storey:
  # todo: rethink this class for buildings with windows
  """
  Storey class
  """
  def __init__(self, name, surfaces, neighbours):
    # todo: the information of the parent surface is lost -> need to recover it
    self._name = name
    self._surfaces = surfaces
    self._thermal_boundaries = None
    self._virtual_surfaces = None
    self._thermal_zone = None
    self._neighbours = neighbours

  @property
  def name(self):
    """
    Storey's name
    :return: str
    """
    return self._name

  @property
  def surfaces(self) -> List[Surface]:
    """
    External surfaces enclosing the storey
    :return: [Surface]
    """
    return self._surfaces

  @property
  def neighbours(self):
    """
    Neighbour storeys' names
    :return: [str]
    """
    return self._neighbours

  @property
  def thermal_boundaries(self) -> List[ThermalBoundary]:
    """
    Thermal boundaries bounding the thermal zone
    :return: [ThermalBoundary]
    """
    # todo: it cannot be, it creates a loop between thermal boundaries and thermal zones
    if self._thermal_boundaries is None:
      self._thermal_boundaries = []
      for surface in self.surfaces:
        if surface.type != cte.INTERIOR_WALL or surface.type != cte.INTERIOR_SLAB:
          # external thermal boundary -> only one thermal zone
          delimits = [self.thermal_zone]
        else:
          # internal thermal boundary -> two thermal zones
          grad = np.rad2deg(surface.inclination)
          if grad >= 170:
            delimits = [self.thermal_zone, self._neighbours[0]]
          else:
            delimits = [self._neighbours[1], self.thermal_zone]
        self._thermal_boundaries.append(ThermalBoundary(surface, delimits))
    return self._thermal_boundaries

  @property
  def virtual_surfaces(self) -> List[Surface]:
    """
    Internal surfaces enclosing the thermal zone
    :return: [Surface]
    """
    if self._virtual_surfaces is None:
      self._virtual_surfaces = []
      for thermal_boundary in self.thermal_boundaries:
        self._virtual_surfaces.append(thermal_boundary.virtual_internal_surface)
    return self._virtual_surfaces

  @property
  def thermal_zone(self) -> ThermalZone:
    """
    Thermal zone inside the storey
    :return: ThermalZone
    """
    if self._thermal_zone is None:
      self._thermal_zone = ThermalZone(self.virtual_surfaces)
    return self._thermal_zone