/***********************************************************************************************************************************************************************
 * File Name: cronPresets.data.js
 * Type of Program: Data
 * Description: Friendly schedule presets for admin-configurable notification
 *              crons. The UI only ever offers these six options — no raw cron
 *              expressions are accepted from the client, so `updateSetting`
 *              in notificationSettings.controller.js validates against this map.
 *
 * Author: Kenneth Obsequio (@lash0000)
 * Date Created: Jul. 2, 2026
 ***********************************************************************************************************************************************************************/
'use strict';

const CRON_PRESETS = {
    every_minute:   '* * * * *',
    every_5_min:    '*/5 * * * *',
    every_15_min:   '*/15 * * * *',
    hourly:         '0 * * * *',
    every_6_hours:  '0 */6 * * *',
    daily:          '0 0 * * *',
};

// Reverse lookup — cron string -> preset key (used to label a job's current schedule)
const CRON_PRESET_BY_EXPRESSION = Object.fromEntries(
    Object.entries(CRON_PRESETS).map(([key, expr]) => [expr, key])
);

module.exports = { CRON_PRESETS, CRON_PRESET_BY_EXPRESSION };