"""
DBFactory performs read related operations
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2022 Concordia CERC group
Project CoderPeter Yefi peteryefi@gmail.com
"""
from hub.persistence import City
from hub.persistence import Application
from hub.persistence import User
from hub.persistence import CityObject
from hub.persistence import SimulationResults


class DBFactory:
  """
  DBFactory class
  """

  def __init__(self, db_name, app_env, dotenv_path):
    self._city = City(db_name=db_name, app_env=app_env, dotenv_path=dotenv_path)
    self._application = Application(db_name=db_name, app_env=app_env, dotenv_path=dotenv_path)
    self._user = User(db_name=db_name, app_env=app_env, dotenv_path=dotenv_path)
    self._city_object = CityObject(db_name=db_name, app_env=app_env, dotenv_path=dotenv_path)
    self._simulation_results = SimulationResults(db_name=db_name, dotenv_path=dotenv_path, app_env=app_env)

  def application_info(self, application_uuid):
    """
    Retrieve the application info for the given uuid
    :param application_uuid: the uuid for the application
    """
    return self._application.get_by_uuid(application_uuid)

  def user_login(self, name, password, application_uuid):
    """
    Retrieve the user info
    :param name: the user name
    :param password: the user password
    :param application_uuid: the application uuid
    """
    return self._user.get_by_name_application_uuid_and_password(name, password, application_uuid)

  def results(self, user_id, application_id,  cities, result_names=[]):
    """
    Retrieve the simulation results for the given cities
    :param user_id: the user id owning the results
    :param application_id: the application id owning the results
    :param cities: dictionary containing the city and building names for the results
    :param result_names: if given, filter the results to the selected names
    """
    results = []
    for city in cities['cities'].keys():
      city_id = self._city.get_by_user_id_application_id_and_name(user_id, application_id, city).id
      for building_name in cities[city]:
        city_object_id = self._city_object.get_by_name_and_city(building_name, city_id).id
        results.append(self._simulation_results.get_simulation_results_by_city_id_city_object_id_and_names(
          city_id,
          city_object_id,
          result_names))
    return results