const NodeGeocoder = require('node-geocoder');
const logger = require('log4js').getLogger('GeoCode');

const { reduceOpencage } = require('./reducers/opencage');
logger.level = 'debug';

const options = {
  'provider': 'opencage',

  // Optional depending on the providers
  'httpAdapter': 'https', // Default
  'apiKey': '893ab539eca84b5ca7a54cb03ef23443', // for Mapquest, OpenCage, Google Premier
  'formatter': null // 'gpx', 'string', ...
};

const geocoder = NodeGeocoder(options);

function doGetGeocode(ll) {
  return new Promise((resolve, reject) => {
    const [lat, lon ] = ll.split(',');

    const latlong = { lat, lon };

    logger.debug(latlong);

    geocoder.reverse(latlong)
      .then(function(res) {
        if (res.hasOwnProperty('raw')) {
          const result = reduceOpencage(res.raw);

          return resolve(result[0]);
        }
        else
          return resolve(res[0]);
      })
      .catch(function(err) {
        logger.error(err);

        return reject(err);
      });
  });
}

module.exports = { doGetGeocode };

/*

opencage

{
  "latitude": 51.508751,
  "longitude": -0.067457,
  "country": "United Kingdom",
  "city": "London",
  "state": "England",
  "zipcode": "SE15",
  "streetName": "Vaughan Way",
  "countryCode": "gb",
  "suburb": "St.George in the East",
  "extra": {
    "flag": "🇬🇧",
    "confidence": 9,
    "confidenceKM": 0.5,
    "map": "https://www.openstreetmap.org/?mlat=51.50875&mlon=-0.06746#map=17/51.50875/-0.06746"
  }
}

google

[
	{
		"administrativeLevels": {
			"level1long": "England",
			"level1short": "England",
			"level2long": "Northamptonshire",
			"level2short": "Northamptonshire"
		},
		"city": "Northampton",
		"country": "United Kingdom",
		"countryCode": "GB",
		"extra": {
			"confidence": 0.7,
			"establishment": "Daventy depot",
			"googlePlaceId": "ChIJI8H0WFUVd0gRIIFzNwDQAuM",
			"neighborhood": "Kilsby",
			"premise": null,
			"subpremise": null
		},
		"formattedAddress": "Daventy depot, Kilsby, Northampton NN6 7GY, UK",
		"latitude": 52.3546726,
		"longitude": -1.1741823,
		"provider": "google",
		"zipcode": "NN6 7GY"
	}
]
 */