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const logger = require( 'pelias-logger' ).get( 'pointinpolygon' );
const request = require('request');
const _ = require('lodash');
function sanitizeUrl(requestUrl) {
return requestUrl.replace(/^(.+)\/.+\/.+$/, (match, base) => {
return `${base}/[removed]/[removed]`;
});
}
function parseErrorMessage(requestUrl, body, do_not_track) {
if (do_not_track) {
return `${sanitizeUrl(requestUrl)} returned status 200 but with non-JSON response: ${body}`;
}
return `${requestUrl} returned status 200 but with non-JSON response: ${body}`;
}
function serviceErrorMessage(requestUrl, statusCode, body, do_not_track) {
if (do_not_track) {
return `${sanitizeUrl(requestUrl)} returned status ${statusCode}: ${body}`;
} else {
return `${requestUrl} returned status ${statusCode}: ${body}`;
}
}
module.exports = (url) => {
if (!_.isEmpty(url)) {
logger.info(`using point-in-polygon service at ${url}`);
return function pointinpolygon( centroid, do_not_track, callback ) {
const requestUrl = `${url}/${centroid.lon}/${centroid.lat}`;
const options = {
method: 'GET',
url: requestUrl
};
if (do_not_track) {
options.headers = {
dnt: '1'
};
}
request(options, (err, response, body) => {
if (err) {
logger.error(JSON.stringify(err));
callback(err);
}
else if (response.statusCode === 200) {
try {
const parsed = JSON.parse(body);
callback(err, parsed);
}
catch (err) {
const parseMsg = parseErrorMessage(requestUrl, body, do_not_track);
logger.error(parseMsg);
callback(parseMsg);
}
}
else {
const errorMsg = serviceErrorMessage(requestUrl, response.statusCode, body, do_not_track);
logger.error(errorMsg);
callback(errorMsg);
}
});
};
} else {
logger.warn('point-in-polygon service disabled');
return (centroid, do_not_track, callback) => {
callback(`point-in-polygon service disabled, unable to resolve ` +
(do_not_track ? 'centroid' : JSON.stringify(centroid)));
};
}
};