"""
CliWeatherParameters class to extract weather parameters from a defined region in .dat format
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2020 Project Author Pilar Monsalvete pilar_monsalvete@yahoo.es
"""

import pandas as pd


class DatWeatherParameters:
  """
  DatWeatherParameters class
  """
  def __init__(self, full_path_weather):
    self._full_path_weather = full_path_weather
    self._weather_values = None

  def weather_values(self):
    if self._full_path_weather is not None:
      # TODO: catch error if file does not exist
      if self._weather_values is None:
        self._weather_values = pd.read_csv(self._full_path_weather, sep='\s+', header=None,
                                           names=['hour', 'global_horiz', 'temperature', 'diffuse', 'beam', 'empty'])
    return self._weather_values