"""
TestGeometryFactory test and validate the city model structure geometric parameters
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
"""
import os
from pathlib import Path
from unittest import TestCase
from city_model_structure.city import City
from imports.geometry_factory import GeometryFactory


class TestGeometryFactory(TestCase):
  """
  TestGeometryFactory TestCase 1
  """
  def setUp(self) -> None:
    """
    Test setup
    :return: None
    """
    self._city_gml = None
    self._example_path = (Path(__file__).parent / 'tests_data').resolve()

  def _get_citygml(self, file):
    if self._city_gml is None:
      file_path = (self._example_path / file).resolve()
      self._city_gml = GeometryFactory('citygml', file_path).city
      self.assertIsNotNone(self._city_gml, 'city is none')
    return self._city_gml

  def test_citygml_city_serialization(self):
    """
    Test the City from citygml serialization de-serialization
    :return: None
    """
    file = 'lod2_buildings.gml'
    pickle_file = (self._example_path / 'lod2_buildings.pickle').resolve()
    city = self._get_citygml(file)
    self.assertIsNotNone(city.city_objects, 'city_objects is none')
    for building in city.buildings:
      self.assertIsNotNone(city.city_object(building.name), 'city_object return none')
    self.assertIsNotNone(city.srs_name, 'srs_name is none')
    self.assertIsNotNone(city.lower_corner, 'lower_corner is none')
    self.assertIsNotNone(city.upper_corner, 'upper_corner is none')
    self.assertIsNotNone(city.name, 'name is none')
    self.assertIsNotNone(city.country_code, 'country code is none')
    city.save(pickle_file)
    city = City.load(pickle_file)
    # repeat the city tests
    self.assertIsNotNone(city.city_objects, 'city_objects is none')
    for building in city.buildings:
      self.assertIsNotNone(city.city_object(building.name), 'city_object return none')
    self.assertIsNotNone(city.srs_name, 'srs_name is none')
    self.assertIsNotNone(city.lower_corner, 'lower_corner is none')
    self.assertIsNotNone(city.upper_corner, 'upper_corner is none')
    self.assertIsNotNone(city.name, 'name is none')
    self.assertIsNotNone(city.country_code, 'country code is none')
    os.remove(pickle_file)

  def test_surfaces_triangulation(self):
    """
    Test city surfaces triangulation and polygon creation
    :return:
    """
    file = (self._example_path / 'gml_17_12_2020.gml').resolve()
    city = GeometryFactory('citygml', file).city

    counter = 0
    for building in city.buildings:
      if str(building.volume) == 'inf':
        counter += 1
    self.assertEqual(counter, 1, f'{counter} buildings had errors when triangulating surfaces')