chrono-node/dist/esm/common/refiners/ForwardDateRefiner.js

A natural language date parser in Javascript

import * as dates from "../../utils/dates.js";
import { implySimilarDate } from "../../utils/dates.js";
import { addDuration } from "../../calculation/duration.js";
import { getDaysForwardToWeekday } from "../../calculation/weekdays.js";
export default class ForwardDateRefiner {
    refine(context, results) {
        if (!context.option.forwardDate) {
            return results;
        }
        results.forEach((result) => {
            let refDate = context.reference.getDateWithAdjustedTimezone();
            if (result.start.isOnlyTime() && context.reference.instant > result.start.date()) {
                const refDate = context.reference.getDateWithAdjustedTimezone();
                const refFollowingDay = new Date(refDate);
                refFollowingDay.setDate(refFollowingDay.getDate() + 1);
                dates.implySimilarDate(result.start, refFollowingDay);
                context.debug(() => {
                    console.log(`${this.constructor.name} adjusted ${result} time from the ref date (${refDate}) to the following day (${refFollowingDay})`);
                });
                if (result.end && result.end.isOnlyTime()) {
                    dates.implySimilarDate(result.end, refFollowingDay);
                    if (result.start.date() > result.end.date()) {
                        refFollowingDay.setDate(refFollowingDay.getDate() + 1);
                        dates.implySimilarDate(result.end, refFollowingDay);
                    }
                }
            }
            if (result.start.isOnlyWeekdayComponent() && refDate > result.start.date()) {
                let daysToAdd = getDaysForwardToWeekday(refDate, result.start.get("weekday")) || 7;
                const forwardedWeekday = addDuration(refDate, { day: daysToAdd });
                implySimilarDate(result.start, forwardedWeekday);
                context.debug(() => {
                    console.log(`${this.constructor.name} adjusted ${result} weekday (${result.start})`);
                });
                if (result.end && result.start.date() > result.end.date()) {
                    let daysToAdd = getDaysForwardToWeekday(refDate, result.start.get("weekday")) || 7;
                    const forwardedWeekday = addDuration(refDate, { day: daysToAdd });
                    implySimilarDate(result.end, forwardedWeekday);
                    context.debug(() => {
                        console.log(`${this.constructor.name} adjusted ${result} weekday (${result.end})`);
                    });
                }
            }
            if (result.start.isDateWithUnknownYear() && refDate > result.start.date()) {
                for (let i = 0; i < 3 && refDate > result.start.date(); i++) {
                    result.start.imply("year", result.start.get("year") + 1);
                    context.debug(() => {
                        console.log(`${this.constructor.name} adjusted ${result} year (${result.start})`);
                    });
                    if (result.end && !result.end.isCertain("year")) {
                        result.end.imply("year", result.end.get("year") + 1);
                        context.debug(() => {
                            console.log(`${this.constructor.name} adjusted ${result} month (${result.start})`);
                        });
                    }
                }
            }
        });
        return results;
    }
}
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