pedwfrontend/lib/domain/representation-policy/resolveRepresentationWindow.js

const startOfToday = (DateCtor = Date) =>
    new DateCtor(new DateCtor().toDateString());

const toDate = (value, DateCtor = Date) => new DateCtor(value);

export function isRepresentationWindowOpen(
    startDate,
    endDate,
    DateCtor = Date
) {
    const date = startOfToday(DateCtor);
    const start = toDate(startDate, DateCtor);
    const end = toDate(endDate, DateCtor);

    return date >= start && date <= end ? true : false;
}

export function isRepresentationWindowClosed(
    startDate,
    endDate,
    DateCtor = Date
) {
    const date = startOfToday(DateCtor);
    const start = toDate(startDate, DateCtor);
    const end = toDate(endDate, DateCtor);

    return date > start && date > end ? true : false;
}

export function resolveRepresentationWindow(caseDetails, DateCtor = Date) {
    caseDetails = caseDetails || {};

    const hasStartDate =
        Object.prototype.hasOwnProperty.call(caseDetails, "pinswg_startdate") ||
        Object.prototype.hasOwnProperty.call(
            caseDetails,
            "pinswg_applicationacceptedasvalid"
        ) ||
        Object.prototype.hasOwnProperty.call(caseDetails, "pinswg_startdates");

    const startDate =
        caseDetails.pinswg_startdate ||
        caseDetails.pinswg_startdates ||
        caseDetails.pinswg_applicationacceptedasvalid;

    const endDate =
        caseDetails.pinswg_finalcommentsduedate ||
        caseDetails.pinswg_endofrepresentationperiod;

    return {
        hasStartDate,
        startDate,
        endDate,
        isOpen:
            hasStartDate &&
            isRepresentationWindowOpen(startDate, endDate, DateCtor),
        isClosed: isRepresentationWindowClosed(startDate, endDate, DateCtor)
    };
}