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import { toDate } from "./toDate.mjs";
import { addLeadingZeros } from "./_lib/addLeadingZeros.mjs";
/**
* The {@link formatISO} function options.
*/
/**
* @name formatISO
* @category Common Helpers
* @summary Format the date according to the ISO 8601 standard (https://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a003169814.htm).
*
* @description
* Return the formatted date string in ISO 8601 format. Options may be passed to control the parts and notations of the date.
*
* @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
*
* @param date - The original date
* @param options - An object with options.
*
* @returns The formatted date string (in loca.l time zone)
*
* @throws `date` must not be Invalid Date
*
* @example
* // Represent 18 September 2019 in ISO 8601 format (local time zone is UTC):
* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52))
* //=> '2019-09-18T19:00:52Z'
*
* @example
* // Represent 18 September 2019 in ISO 8601, short format (local time zone is UTC):
* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { format: 'basic' })
* //=> '20190918T190052'
*
* @example
* // Represent 18 September 2019 in ISO 8601 format, date only:
* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'date' })
* //=> '2019-09-18'
*
* @example
* // Represent 18 September 2019 in ISO 8601 format, time only (local time zone is UTC):
* const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'time' })
* //=> '19:00:52Z'
*/
export function formatISO(date, options) {
const _date = toDate(date);
if (isNaN(_date.getTime())) {
throw new RangeError("Invalid time value");
}
const format = options?.format ?? "extended";
const representation = options?.representation ?? "complete";
let result = "";
let tzOffset = "";
const dateDelimiter = format === "extended" ? "-" : "";
const timeDelimiter = format === "extended" ? ":" : "";
// Representation is either 'date' or 'complete'
if (representation !== "time") {
const day = addLeadingZeros(_date.getDate(), 2);
const month = addLeadingZeros(_date.getMonth() + 1, 2);
const year = addLeadingZeros(_date.getFullYear(), 4);
// yyyyMMdd or yyyy-MM-dd.
result = `${year}${dateDelimiter}${month}${dateDelimiter}${day}`;
}
// Representation is either 'time' or 'complete'
if (representation !== "date") {
// Add the timezone.
const offset = _date.getTimezoneOffset();
if (offset !== 0) {
const absoluteOffset = Math.abs(offset);
const hourOffset = addLeadingZeros(Math.trunc(absoluteOffset / 60), 2);
const minuteOffset = addLeadingZeros(absoluteOffset % 60, 2);
// If less than 0, the sign is +, because it is ahead of time.
const sign = offset < 0 ? "+" : "-";
tzOffset = `${sign}${hourOffset}:${minuteOffset}`;
} else {
tzOffset = "Z";
}
const hour = addLeadingZeros(_date.getHours(), 2);
const minute = addLeadingZeros(_date.getMinutes(), 2);
const second = addLeadingZeros(_date.getSeconds(), 2);
// If there's also date, separate it with time with 'T'
const separator = result === "" ? "" : "T";
// Creates a time string consisting of hour, minute, and second, separated by delimiters, if defined.
const time = [hour, minute, second].join(timeDelimiter);
// HHmmss or HH:mm:ss.
result = `${result}${separator}${time}${tzOffset}`;
}
return result;
}
// Fallback for modularized imports:
export default formatISO;
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