zkteco-js/src/helper/time.js

The zkteco library allows Node.js developers to easily interface with ZK BioMetric Fingerprint Attendance Devices, extract and manage data, and integrate biometric features into attendance systems efficiently.

/**
 *
 * Author: coding-libs
 * Date: 2024-07-01
 */

/**
 *
 * @param {number} time
 */
exports.decode = time => {
    const second = time % 60;
    time = (time - second) / 60;

    const minute = time % 60;
    time = (time - minute) / 60;

    const hour = time % 24;
    time = (time - hour) / 24;

    const day = time % 31 + 1;
    time = (time - (day - 1)) / 31;

    const month = time % 12;
    time = (time - month) / 12;

    const year = time + 2000;

    return new Date(year, month, day, hour, minute, second);
};

/**
 *
 * @param {Date} date
 */
exports.encode = date => {
    return (
        ((date.getFullYear() % 100) * 12 * 31 + date.getMonth() * 31 + date.getDate() - 1) * (24 * 60 * 60) +
        (date.getHours() * 60 + date.getMinutes()) * 60 +
        date.getSeconds()
    );
};