import { DateTime } from "luxon";
import z from "zod";
import { DATE_FORMAT, EXAMPLE_VALID_DATE_TIME } from "../constants.js";
/**
* Mutate a date time string by adding or subtracting days, hours, minutes, months, or years
* @param {string} dateTime - The date time string to mutate
* @param {object} update - The update object
* @returns {string} - The mutated date time string
*/
export const mutateDate = (dateTime, update) => {
const updateSchema = z.object({
days: z.number().optional(),
hours: z.number().optional(),
minutes: z.number().optional(),
months: z.number().optional(),
years: z.number().optional(),
});
const { error, data } = updateSchema.safeParse(update);
if (error) {
return `Invalid update request. ${error.message}`
}
const dateTimeParsed = DateTime.fromFormat(dateTime, DATE_FORMAT);
if (!dateTimeParsed.isValid) {
return `Invalid date time string: ${dateTime}. Must follow format: ${EXAMPLE_VALID_DATE_TIME}`
}
const { days, hours, minutes, months, years } = data;
const mutatedDateTime = dateTimeParsed.plus({
days,
hours,
minutes,
months,
years,
});
return mutatedDateTime.toFormat(DATE_FORMAT);
}
