02cfdda900
- date.js: single source of truth for ISO date formatting/arithmetic (toISODate, parseISODate, addDays, daysBetween, todayISO, nowCompactTimestamp) - event-factory.js: createEvent/cloneEvent (structuredClone with JSON fallback) - split.js: splitRecurringEvent pure function using intervalDays from recur.js - recur.js: replaced local toISO() and inline Date math with date.js helpers - organize.js: replaced inline date formatting and gap math with date.js helpers, extracted buildGrid() helper and byDate comparator
60 lines
1.8 KiB
JavaScript
60 lines
1.8 KiB
JavaScript
/**
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* Centralized date-string utilities.
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*
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* All date values in the app use the 'YYYY-MM-DD' (wall-clock) format.
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* These helpers are the single source of truth for formatting and
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* arithmetic on that format, replacing ad-hoc inline code that was
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* duplicated across organize.js, recur.js, useCalendar.js, and ical-io.js.
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*/
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/** Pad a number to 2 digits with leading zero. */
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export function pad2(n) {
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return String(n).padStart(2, '0')
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}
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/** Convert a JS Date to 'YYYY-MM-DD' (local wall-clock). */
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export function toISODate(date) {
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return `${date.getFullYear()}-${pad2(date.getMonth() + 1)}-${pad2(date.getDate())}`
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}
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/** Parse 'YYYY-MM-DD' into { year, month, day } (month is 1-based). */
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export function parseISODate(s) {
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const [y, m, d] = s.split('-').map(Number)
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return { year: y, month: m, day: d }
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}
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/** Build a local JS Date at midnight from 'YYYY-MM-DD'. */
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export function toDate(isoDate) {
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return new Date(isoDate + 'T00:00:00')
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}
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/** Add `days` days to an ISO date string, return new ISO string. */
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export function addDays(isoDate, days) {
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const d = toDate(isoDate)
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d.setDate(d.getDate() + days)
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return toISODate(d)
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}
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/** Whole-day difference between two ISO date strings (b - a). */
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export function daysBetween(isoA, isoB) {
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return Math.round((toDate(isoB) - toDate(isoA)) / (24 * 3600 * 1000))
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}
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/** Today's date as 'YYYY-MM-DD' (local). */
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export function todayISO() {
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return toISODate(new Date())
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}
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/**
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* Current UTC timestamp in compact RFC 5545 form (e.g. '20260711T085008Z').
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* Used for DTSTAMP on new events.
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*/
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export function nowCompactTimestamp() {
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return new Date().toISOString().replace(/[-:]/g, '').split('.')[0] + 'Z'
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}
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/** Format a JS Date's time as 'HH:MM'. */
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export function toHHMM(date) {
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return `${pad2(date.getHours())}:${pad2(date.getMinutes())}`
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}
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