"""
HeatPump Service
SPDX - License - Identifier: LGPL - 3.0 - or -later
Copyright © 2022 Project Author Peter Yefi peteryefi@gmail.com
"""
import json

from flask import request, Response
from hub_api.config import Config
from flask_restful import Resource
from hub_api.helpers.auth import role_required
from utils import HeatPumpSimulator
from utils import validate_hp_model
from persistence.models import UserRoles
from utils import expand_energy_demand
from hub_logger import logger


class HeatPump(Config, Resource):
  def __init__(self):
    super().__init__()

  @role_required([UserRoles.Admin.value, UserRoles.Hub_Reader.value])
  def post(self, city_id):
    payload = request.get_json()
    city = self.get_city(city_id)
    if validate_hp_model(payload['HeatPumpType'], payload['HeatPumpModel']):
      # expand energy demand values
      expand_energy_demand(payload['EnergyDemand'])
      try:
        # Run simulation and return output file here
        hp_simulator = HeatPumpSimulator(city, payload)
        results = hp_simulator.run_hp_simulation()
        return Response(json.dumps(results), status=200)
      except Exception as err:
        logger.error(err)
        return Response(json.dumps({'error_message': 'Sorry an error occurred while running HP Simulation'}))
    else:
      return Response(json.dumps({'error_message': 'Wrong heat pump type/model combination'}), status=400)