"""
Building module
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
contributors: Pilar Monsalvete Alvarez de Uribarri pilar.monsalvete@concordia.ca
"""

from typing import List, Union, TypeVar
import numpy as np
from city_model_structure.building_demand.surface import Surface
from city_model_structure.building_demand.usage_zone import UsageZone
from city_model_structure.building_demand.storey import Storey
from city_model_structure.city_object import CityObject
from city_model_structure.building_demand.household import Household
from city_model_structure.attributes.polyhedron import Polyhedron

ThermalZone = TypeVar('ThermalZone')


class Building(CityObject):
  """
  Building(CityObject) class
  """
  def __init__(self, name, lod, surfaces, year_of_construction, function, city_lower_corner, terrains=None):
    super().__init__(name, lod, surfaces, city_lower_corner)
    self._households = None
    self._basement_heated = None
    self._attic_heated = None
    self._terrains = terrains
    self._year_of_construction = year_of_construction
    self._function = function
    self._average_storey_height = None
    self._storeys_above_ground = None
    self._floor_area = None
    self._roof_type = None
    self._storeys = None
    self._geometrical_zones = None
    self._thermal_zones = None
    self._usage_zones = None
    self._type = 'building'
    self._heating = dict()
    self._cooling = dict()
    self._eave_height = None
    self._grounds = []
    self._roofs = []
    self._walls = []
    self._internal_walls = []
    for surface_id, surface in enumerate(self.surfaces):
      self._min_x = min(self._min_x, surface.lower_corner[0])
      self._min_y = min(self._min_y, surface.lower_corner[1])
      self._min_z = min(self._min_z, surface.lower_corner[2])
      surface.id = surface_id
      # todo: consider all type of surfaces, not only these four
      if surface.type == 'Ground':
        self._grounds.append(surface)
      elif surface.type == 'Wall':
        self._walls.append(surface)
      elif surface.type == 'Roof':
        self._roofs.append(surface)
      else:
        self._internal_walls.append(surface)

  @property
  def geometrical_zones(self) -> List[Polyhedron]:
    if self._geometrical_zones is None:
      polygons = []
      for surface in self.surfaces:
        polygons.append(surface.perimeter_polygon)
      self._geometrical_zones = [Polyhedron(polygons)]
    return self._geometrical_zones

  @property
  def grounds(self) -> List[Surface]:
    """
    Get building ground surfaces
    :return: [Surface]
    """
    return self._grounds

  @property
  def roofs(self) -> List[Surface]:
    """
    Get building roof surfaces
    :return: [Surface]
    """
    return self._roofs

  @property
  def walls(self) -> List[Surface]:
    """
    Get building wall surfaces
    :return: [Surface]
    """
    return self._walls

  @property
  def usage_zones(self) -> Union[None, List[UsageZone]]:
    """
    Get city object usage zones
    :return: [UsageZone]
    """
    return self._usage_zones

  @usage_zones.setter
  def usage_zones(self, value):
    """
    Set city object usage zones
    :param value: [UsageZone]
    """
    self._usage_zones = value

  @property
  def terrains(self) -> Union[None, List[Surface]]:
    """
    Get city object terrain surfaces
    :return: [Surface]
    """
    return self._terrains

  @property
  def attic_heated(self) -> Union[None, int]:
    """
    Get if the city object attic is heated
    :return: None or int
    """
    return self._attic_heated

  @attic_heated.setter
  def attic_heated(self, value):
    """
    Set if the city object attic is heated
    :param value: int
    """
    if value is not None:
      self._attic_heated = int(value)

  @property
  def basement_heated(self) -> Union[None, int]:
    """
    Get if the city object basement is heated
    :return: None or int
    """
    return self._basement_heated

  @basement_heated.setter
  def basement_heated(self, value):
    """
    Set if the city object basement is heated
    :param value: int
    """
    if value is not None:
      self._basement_heated = int(value)

  @property
  def thermal_zones(self) -> Union[None, List[ThermalZone]]:
    """
    Get building thermal zones
    :return: [ThermalZone]
    """
    return self._thermal_zones

  @thermal_zones.setter
  def thermal_zones(self, value):
    """
    Set city object thermal zones
    :param value: [ThermalZone]
    """
    self._thermal_zones = value

  @property
  def heated_volume(self):
    """
    Raises not implemented error
    """
    # ToDo: this need to be calculated based on the basement and attic heated values
    raise NotImplementedError

  @property
  def year_of_construction(self):
    """
    Get building year of construction
    :return: int
    """
    return self._year_of_construction

  @year_of_construction.setter
  def year_of_construction(self, value):
    """
    Set building year of construction
    :param value: int
    """
    if value is not None:
      self._year_of_construction = int(value)

  @property
  def function(self) -> Union[None, str]:
    """
    Get building function
    :return: None or str
    """
    return self._function

  @function.setter
  def function(self, value):
    """
    Set building function
    :param value: str
    """
    if value is not None:
      self._function = str(value)

  @property
  def average_storey_height(self) -> Union[None, float]:
    """
    Get building average storey height in meters
    :return: None or float
    """
    return self._average_storey_height

  @average_storey_height.setter
  def average_storey_height(self, value):
    """
    Set building average storey height in meters
    :param value: float
    """
    if value is not None:
      self._average_storey_height = float(value)

  @property
  def storeys_above_ground(self) -> Union[None, int]:
    """
    Get building storeys number above ground
    :return: None or int
    """
    return self._storeys_above_ground

  @storeys_above_ground.setter
  def storeys_above_ground(self, value):
    """
    Set building storeys number above ground
    :param value: int
    """
    if value is not None:
      self._storeys_above_ground = int(value)

  @property
  def heating(self) -> dict:
    """
    Get heating demand in Wh
    :return: dict{DataFrame(float)}
    """
    return self._heating

  @heating.setter
  def heating(self, value):
    """
    Set heating demand in Wh
    :param value: dict{DataFrame(float)}
    """
    self._heating = value

  @property
  def cooling(self) -> dict:
    """
    Get cooling demand in Wh
    :return: dict{DataFrame(float)}
    """
    return self._cooling

  @cooling.setter
  def cooling(self, value):
    """
    Set cooling demand in Wh
    :param value: dict{DataFrame(float)}
    """
    self._cooling = value

  @property
  def eave_height(self):
    """
    Get building eave height in meters
    :return: float
    """
    if self._eave_height is None:
      self._eave_height = 0
      for wall in self.walls:
        self._eave_height = max(self._eave_height, wall.upper_corner[2])
    return self._eave_height

  @property
  def storeys(self) -> List[Storey]:
    """
    Get building storeys
    :return: [Storey]
    """
    return self._storeys

  @storeys.setter
  def storeys(self, value):
    """
    Set building storeys
    :param value: [Storey]
    """
    self._storeys = value

  @property
  def roof_type(self):
    """
    Get roof type for the building flat or pitch
    :return: str
    """
    if self._roof_type is None:
      self._roof_type = 'flat'
      for roof in self.roofs:
        grads = np.rad2deg(roof.inclination)
        if 355 > grads > 5:
          self._roof_type = 'pitch'
          break
    return self._roof_type

  @roof_type.setter
  def roof_type(self, value):
    """
    Set roof type for the building flat or pitch
    :return: str
    """
    self._roof_type = value

  @property
  def floor_area(self):
    """
    Get building floor area in square meters
    :return: float
    """
    if self._floor_area is None:
      self._floor_area = 0
      for surface in self.surfaces:
        if surface.type == 'Ground':
          self._floor_area += surface.perimeter_polygon.area
    return self._floor_area

  @property
  def households(self) -> List[Household]:
    """
    Get the list of households inside the building
    :return: List[Household]
    """
    return self._households

  @property
  def is_conditioned(self):
    """
    Get building heated flag
    :return: Boolean
    """
    if self.thermal_zones is None:
      return False
    for thermal_zone in self.thermal_zones:
      if thermal_zone.hvac_system is not None:
        return True
    return False