"""
Building module
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
contributors: Pilar Monsalvete pilar_monsalvete@yahoo.es
"""


import sys
from typing import List
import numpy as np
import math
from city_model_structure.attributes.surface import Surface
from city_model_structure.attributes.thermal_boundary import ThermalBoundary
from city_model_structure.attributes.thermal_zone import ThermalZone
from city_model_structure.attributes.usage_zone import UsageZone
from city_model_structure.city_object import CityObject
from helpers.geometry_helper import GeometryHelper as gh
from trimesh import Trimesh


class Building(CityObject):
  """
  Building(CityObject) class
  """
  def __init__(self, name, lod, surfaces, year_of_construction, function,
               city_lower_corner, terrains=None, zones_surfaces_ids=None):
    super().__init__(name, lod, surfaces, city_lower_corner)
    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._usage_zones = []
    self._type = 'building'
    self._heating = dict()
    self._cooling = dict()
    self._eave_height = None

    self._grounds = []
    self._roofs = []
    self._walls = []
    self._internal_walls = []

    self._thermal_zones = []
    zone_surfaces = None
    if zones_surfaces_ids is not None:
      for zone_surfaces_ids in zones_surfaces_ids:
        zone_surfaces = []
        for surface_id in zone_surfaces_ids:
          zone_surfaces.append(self.surface(surface_id))
    else:
      zone_surfaces = surfaces
    self._thermal_zones.append(ThermalZone(zone_surfaces))
    for t_zones in self._thermal_zones:
      t_zones.bounded = [ThermalBoundary(s, [t_zones]) for s in t_zones.surfaces]
    for surface_id, surface in enumerate(self.surfaces):
      self._min_x = min(self._min_x, surface.bounds_lower_corner[0])
      self._min_y = min(self._min_y, surface.bounds_lower_corner[1])
      self._min_z = min(self._min_z, surface.bounds_lower_corner[2])
      surface.id = surface_id
      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)

    self._pv_plus_hp_installation = None

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

  @property
  def is_heated(self):
    """
    Get building heated flag
    :return: Boolean
    """
    for thermal_zone in self.thermal_zones:
      if thermal_zone.is_heated:
        return thermal_zone.is_heated
    return False

  @property
  def is_cooled(self):
    """
    Get building cooled flag
    :return: Boolean
    """
    for thermal_zone in self.thermal_zones:
      if thermal_zone.is_cooled:
        return thermal_zone.is_cooled
    return False

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

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

  @property
  def usage_zones(self) -> List[UsageZone]:
    """
    Get city object usages zones
    :return: [UsageZone]
    """
    return self._usage_zones

  @usage_zones.setter
  def usage_zones(self, values):
    """
    Set city objects usages zones
    :param values: [UsageZones]
    :return: None
    """
    self._usage_zones = values
    for thermal_zone in self.thermal_zones:
      thermal_zone.usage_zones = values

  @property
  def terrains(self) -> List[Surface]:
    """
    Get city object terrain surfaces
    :return: [Surface]
    """
    return self._terrains

  @property
  def attic_heated(self):
    """
    Get if the city object attic is heated
    :return: Boolean
    """
    return self._attic_heated

  @attic_heated.setter
  def attic_heated(self, value):
    """
    Set if the city object attic is heated
    :param value: Boolean
    :return: None
    """
    self._attic_heated = value

  @property
  def basement_heated(self):
    """
    Get if the city object basement is heated
    :return: Boolean
    """
    return self._basement_heated

  @basement_heated.setter
  def basement_heated(self, value):
    """
    Set if the city object basement is heated
    :param value: Boolean
    :return: None
    """
    self._basement_heated = value

  @property
  def name(self):
    """
    City object name
    :return: str
    """
    return self._name

  @property
  def thermal_zones(self) -> List[ThermalZone]:
    """
    City object thermal zones
    :return: [ThermalZone]
    """
    return self._thermal_zones

  @property
  def heated_volume(self):
    """
    City object heated volume in cubic meters
    :return: float
    """
    # ToDo: this need to be calculated based on the basement and attic heated values
    raise NotImplementedError

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

  @property
  def function(self):
    """
    City object function
    :return: str
    """
    return self._function

  @function.setter
  def function(self, value):
    """
    Set building function
    :param value: string
    :return: None
    """
    self._function = value

  @property
  def average_storey_height(self):
    """
    Get city object average storey height in meters
    :return: float
    """
    return self._average_storey_height

  @average_storey_height.setter
  def average_storey_height(self, value):
    """
    Set city object average storey height in meters
    :param value: float
    :return: None
    """
    self._average_storey_height = value

  @property
  def storeys_above_ground(self):
    """
    Get city object storeys number above ground
    :return: int
    """
    return self._storeys_above_ground

  @storeys_above_ground.setter
  def storeys_above_ground(self, value):
    """
    Set city object storeys number above ground
    :param value: int
    :return:
    """
    self._storeys_above_ground = value

  @staticmethod
  def _tuple_to_point(xy_tuple):
    return [xy_tuple[0], xy_tuple[1], 0.0]

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

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

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

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

  @property
  def eave_height(self):
    """
    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.bounds_upper_corner[2])
    return self._eave_height

  @property
  def storeys(self) -> [Trimesh]:
    """
    subsections of building trimesh by storage in case of no interiors defined
    :return: [Trimesh]
    """
    trimesh = self.simplified_polyhedron.trimesh
    if self.average_storey_height is None:
      if self.storeys_above_ground is None or self.storeys_above_ground <= 0:
        sys.stderr.write('Warning: not enough information to divide building into storeys, '
                         'either number of storeys or average storey height must be provided.\n')
        return [trimesh]
      else:
        number_of_storeys = int(self.storeys_above_ground)
      height = self.eave_height / number_of_storeys
    else:
      height = self.average_storey_height
      if self.storeys_above_ground is not None:
        number_of_storeys = int(self.storeys_above_ground)
      else:
        number_of_storeys = math.floor(float(self.eave_height) / height) + 1
        last_storey_height = float(self.eave_height) - height*(number_of_storeys-1)
        if last_storey_height < 0.3*height:
          number_of_storeys -= 1

    storeys = []
    for n in range(0, number_of_storeys - 1):
      point_plane = [self.city_object_lower_corner[0], self.city_object_lower_corner[1],
                     self.city_object_lower_corner[2] + height * (n + 1)]
      normal = [0, 0, -1]
      storey, trimesh = gh.divide_mesh_by_plane(trimesh, normal, point_plane)
      storeys.append(storey)
    storeys.append(trimesh)
    return storeys

  @property
  def roof_type(self):
    """
    Roof type for the building flat or pitch
    """
    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

  @property
  def floor_area(self):
    """
    Floor area of the building m2
    :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 pv_plus_hp_installation(self):
    return self._pv_plus_hp_installation

  @pv_plus_hp_installation.setter
  def pv_plus_hp_installation(self, value):
    self._pv_plus_hp_installation = value