digitransit-ui/app/util/oldParamParser.js

// Parse from, to and time parameters from old reittiopas searches
import { DateTime } from 'luxon';
import getGeocodingResults from '@digitransit-search-util/digitransit-search-util-get-geocoding-results';
import { locationToOTP } from './otpStrings';
import { kkj2ToWgs84 } from './geo-utils';
import { PREFIX_ITINERARY_SUMMARY } from './path';

const placeParser = /^[^*]*\*([^*]*)\*([^*]*)\*([^*]*)/;

function parseGeocodingResults(results) {
  if (!Array.isArray(results) || results.length < 1) {
    return ' ';
  }
  return locationToOTP({
    address: results[0].properties.label,
    lon: results[0].geometry.coordinates[0],
    lat: results[0].geometry.coordinates[1],
  });
}

function parseLocation(location, input, config) {
  const peliasUrl = config.URL.pelias;
  const minimalRegexp = config.search ? config.search.minimalRegexp : null;
  if (location) {
    const parsedFrom = placeParser.exec(location);
    if (parsedFrom) {
      const coords = kkj2ToWgs84([parsedFrom[2], parsedFrom[3]]);
      return Promise.resolve(
        locationToOTP({
          address: parsedFrom[1],
          lon: coords[0],
          lat: coords[1],
        }),
      );
    }

    return getGeocodingResults(
      location,
      config.searchParams,
      null,
      null,
      null,
      peliasUrl,
      minimalRegexp,
    )
      .then(parseGeocodingResults)
      .catch(() => ' ');
  }
  if (input) {
    const decoded = input.replace('+', ' ');
    return getGeocodingResults(
      decoded,
      config.searchParams,
      null,
      null,
      null,
      peliasUrl,
      minimalRegexp,
    )
      .then(parseGeocodingResults)
      .catch(() => ' ');
  }
  return Promise.resolve(' ');
}

function parseTime(query, config) {
  let time = DateTime.now().setZone(config.timeZone);
  let hasTime;
  let timeStr = '';

  if (query.daymonthyear) {
    const dmy = query.daymonthyear.split('.');
    if (dmy.length === 3) {
      time = time.set({
        day: +dmy[0],
        month: +dmy[1],
        year: +dmy[2],
      });
      hasTime = true;
    }
  }
  if (query.year) {
    time = time.set({
      year: +query.year,
    });
    hasTime = true;
  }
  if (query.month) {
    time = time.set({
      month: +query.month,
    });
    hasTime = true;
  }
  if (query.day) {
    time = time.set({
      day: +query.day,
    });
    hasTime = true;
  }
  if (query.hour) {
    time = time.set({
      hour: +query.hour,
    });
    hasTime = true;
  }
  if (query.minute) {
    time = time.set({
      minute: +query.minute,
    });
    hasTime = true;
  }

  if (hasTime) {
    if (config.queryMaxAgeDays) {
      if (time.diffNow('days').days > -config.queryMaxAgeDays) {
        timeStr = `time=${time.toUnixInteger()}`;
      }
    }
  }
  if (query.timetype === 'arrival') {
    if (timeStr.length > 0) {
      timeStr = `${timeStr}&arriveBy=true`;
    } else {
      timeStr = 'arriveBy=true';
    }
  }
  return Promise.resolve(timeStr);
}

export default function oldParamParser(query, config) {
  return Promise.all([
    parseLocation(query.from, query.from_in, config),
    parseLocation(query.to, query.to_in, config),
    parseTime(query, config),
  ])
    .then(([from, to, time]) => {
      const encoded = {
        from: (from && encodeURIComponent(from)) || '-',
        to: (to && encodeURIComponent(to)) || '-',
      };

      if (from && from.length > 1 && to && to.length > 1) {
        // can redirect to itinerary summary page
        if (time) {
          return `/${PREFIX_ITINERARY_SUMMARY}/${encoded.from}/${encoded.to}/?${time}`;
        }
        return `/${PREFIX_ITINERARY_SUMMARY}/${encoded.from}/${encoded.to}/`;
      }
      return `${config.indexPath === '' ? '' : `/${config.indexPath}`}/${
        encoded.from
      }/${encoded.to}/`;
    })
    .catch(() => (config.indexPath === '' ? '/' : `/${config.indexPath}/`));
}