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