import { TIME_UNITS_PATTERN, parseDuration } from "../constants";
import { ParsingContext } from "../../../chrono";
import { ParsingComponents } from "../../../results";
import { AbstractParserWithWordBoundaryChecking } from "../../../common/parsers/AbstractParserWithWordBoundary";

export default class FITimeUnitWithinFormatParser extends AbstractParserWithWordBoundaryChecking {
    innerPattern(): RegExp {
        return new RegExp(`(${TIME_UNITS_PATTERN})\\s*(?:sisällä|kuluessa|päästä)(?=\\W|$)`, "i");
    }

    innerExtract(context: ParsingContext, match: RegExpMatchArray): ParsingComponents {
        const timeUnits = parseDuration(match[1]);
        return ParsingComponents.createRelativeFromReference(context.reference, timeUnits);
    }
}