const url = require('url');

const _ = require('lodash');

const ServiceConfiguration = require('pelias-microservice-wrapper').ServiceConfiguration;

class PlaceHolder extends ServiceConfiguration {
  constructor(o) {
    super('placeholder', o);
  }

  getParameters(req) {
    const parameters = {};

    if (_.has(req.clean.parsed_text, 'street')) {
      // assemble all these fields into a space-delimited string
      parameters.text = _.values(_.pick(req.clean.parsed_text,
        ['neighbourhood', 'borough', 'city', 'county', 'state', 'country'])).join(' ');

    } else {
      parameters.text = req.clean.text;

    }

    if (_.has(req.clean, 'lang.iso6393')) {
      parameters.lang = req.clean.lang.iso6393;
    }

    return parameters;
  }

  getUrl(req) {
    return url.resolve(this.baseUrl, 'parser/search');
  }

}

module.exports = PlaceHolder;