import subprocess
from subprocess import SubprocessError, TimeoutExpired, CalledProcessError
import platform

from hub.exports.exports_factory import ExportsFactory
from hub.imports.results_factory import ResultFactory


class SraEngine:
  def __init__(self, city, file_path, output_file_path, weather_file):
    """
    SRA class
    :param file_path: _sra.xml file path
    :param output_file_path: path to output the sra calculation
    """
    self._city = city
    self._file_path = file_path
    self._output_file_path = output_file_path
    self._weather_file = weather_file
    if platform.system() == 'Linux':
      self._executable = 'sra'
    elif platform.system() == 'Windows':
      self._executable = 'shortwave_integer'
    ExportsFactory('sra', self._city, output_file_path, weather_file=self._weather_file, weather_format='epw').export()
    self._run()
    ResultFactory('sra', self._city, output_file_path).enrich()

  def _run(self):
    """
    Calls the software
    """
    try:
      subprocess.run([self._executable, str(self._file_path)], stdout=subprocess.DEVNULL)
    except (SubprocessError, TimeoutExpired, CalledProcessError) as error:
      raise Exception(error)