You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

58 lines
1.5 KiB

9 years ago
var _ = require('lodash'),
schemas = require('./labelSchema');
module.exports = function( record ){
var schema = getSchema(record.country_a);
var labelParts = getInitialLabel(record);
for (var key in schema) {
var valueFunction = schema[key];
labelParts = valueFunction(record, labelParts);
}
// NOTE: while it may seem odd to call `uniq` on the list of label parts,
// the effect is quite subtle. Take, for instance, a result for "Lancaster, PA"
// the pseudo-object is:
// {
// 'name': 'Lancaster',
// 'locality': 'Lancaster',
// 'region_a': 'PA',
// 'country_a': 'USA'
// }
//
// the code up to this point generates the label:
// `Lancaster, Lancaster, PA, USA`
//
// then the `unique` call reduces this to:
// `Lancaster, PA, USA`
//
// this code doesn't have the same effect in the case of a venue or address
// where the `name` field would contain the address or name of a point-of-interest
//
// Also see https://github.com/pelias/api/issues/429 for other ways that this is bad
//
// de-dupe, join, trim
return _.uniq( labelParts ).join(', ').trim();
};
function getSchema(country_a) {
if (country_a && country_a.length && schemas[country_a]) {
return schemas[country_a];
}
return schemas.default;
}
function getInitialLabel(record) {
if ('region' === record.layer && ('geonames' === record.source || 'whosonfirst' === record.source)) {
return [];
}
return [record.name];
}