"""
OsmSubway module parses osm files and import the metro location into the city model structure
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Guille Gutierrez guillermo.gutierrezmorote@concordia.ca
"""

import xmltodict
from city_model_structure.subway_entrance import SubwayEntrance


class OsmSubway:
  def __init__(self, path):
    self._subway_entrances = []
    with open(path) as osm:
      self._osm = xmltodict.parse(osm.read(), force_list='tag')
      for node in self._osm['osm']['node']:
        if 'tag' not in node:
          continue
        for tag in node['tag']:
          if '@v' not in tag:
            continue
          if tag['@v'] == 'subway_entrance':
            subway_entrance = SubwayEntrance(node['@id'], node['@lat'], node['@lon'])
            self._subway_entrances.append(subway_entrance)

  @property
  def subway_entrances(self):
    return self._subway_entrances