@opengis/fastify-table/server/plugins/cron/funcs/interval2ms.js

core-plugins

const intervalStringMs = {
    everyMin: 1000 * 60,
    tenMin: 1000 * 60 * 10,
    everyHour: 1000 * 60 * 60,
    isHalfday: 1000 * 60 * 60 * 12,
    dailyHour: 1000 * 60 * 60 * 24,
};

const interval2ms = {
    string: (interval) => {
        const date = new Date();
        const intervarSplit = interval.match(/^(\*{2}|(\*)?(\d{1,2})):(\*(\d)|(\d{2}))/);

        if (!intervarSplit) {
            throw new Error(`interval ${interval} not suported`);
        }

        const [, , isHalfday, dailyHour, , tenMin, HourlyMin] = intervarSplit;
        const intervalMs = (isHalfday && intervalStringMs.isHalfday)
            || (dailyHour && intervalStringMs.dailyHour)
            || (tenMin && intervalStringMs.tenMin)
            || intervalStringMs.everyHour;
        const offsetDay = ((+dailyHour || 0) * 60 + (+tenMin || +HourlyMin)) * 60 * 1000;
        const offsetCur = (date - date.getTimezoneOffset() * 1000 * 60) % intervalMs;
        const waitMs = (offsetDay - offsetCur + intervalMs) % intervalMs;
        return [waitMs, intervalMs];
    },
    number: (interval) => {
        const date = new Date();
        const intervalMs = interval * 1000;
        const dateWithTZ = date - date.getTimezoneOffset() * 1000 * 60;
        const offsetCur = dateWithTZ % intervalMs;
        // start every cron within 1 hour
        const sixtyMinutesStartMs = 3600000;
        const waitMs = (intervalMs - offsetCur) % sixtyMinutesStartMs;
        return [waitMs, intervalMs];
    },
};

export default interval2ms;