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/*
Enforce 'forwardDate' option to on the results. When there are missing component,
e.g. "March 12-13 (without year)" or "Thursday", the refiner will try to adjust the result
into the future instead of the past.
*/
var moment = require('moment');
var Refiner = require('./refiner').Refiner;
exports.Refiner = function ForwardDateRefiner() {
Refiner.call(this);
this.refine = function(text, results, opt) {
if (!opt['forwardDate']) {
return results;
}
results.forEach(function(result) {
var refMoment = moment(result.ref);
if (result.start.isCertain('day') && result.start.isCertain('month') &&
!result.start.isCertain('year') &&
refMoment.isAfter(result.start.moment())
) {
// Adjust year into the future
for (var i=0; i < 3 && refMoment.isAfter(result.start.moment()); i++) {
result.start.imply('year', result.start.get('year') + 1);
if (result.end && !result.end.isCertain('year')) {
result.end.imply('year', result.end.get('year') + 1);
}
}
result.tags['ExtractTimezoneOffsetRefiner'] = true;
}
if (!result.start.isCertain('day') && !result.start.isCertain('month') && !result.start.isCertain('year') &&
result.start.isCertain('weekday') &&
refMoment.isAfter(result.start.moment())
) {
// Adjust date to the coming week
if (refMoment.day() > result.start.get('weekday')) {
refMoment.day(result.start.get('weekday') + 7);
} else {
refMoment.day(result.start.get('weekday'));
}
result.start.imply('day', refMoment.date());
result.start.imply('month', refMoment.month() + 1);
result.start.imply('year', refMoment.year());
result.tags['ExtractTimezoneOffsetRefiner'] = true;
}
});
return results;
}
};
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