Nicolas
b930453878
- packages/date-tools: parseDateOnly/formatDateOnly/toDateOnly, getWeekStart/addWeeks/buildCalendarMonth, sur Luxon DateTime (UTC) - packages/shared: WEEK_DAYS/WeekDay, MEALS/Meal (contrat de valeurs documenté pour PlanningItemView.weekDay/.meal, pas encore enforcé en base), getPlanningByDateSchema (validation de forme de ?date=)
40 lines
1.5 KiB
TypeScript
40 lines
1.5 KiB
TypeScript
import type { DateTime } from "luxon";
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/**
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* The Monday of the week containing `date` (UTC midnight, same time-of-day
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* handling as `date-only.ts`). Luxon's `startOf("week")` is Monday-first by
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* default (ISO 8601 week numbering) regardless of locale, which already
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* matches the French week this app uses — no locale option needed.
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*/
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export function getWeekStart(date: DateTime): DateTime {
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return date.startOf("week");
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}
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/** Shifts `date` by `n` weeks (negative to go back) — `date` need not already be a week start. */
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export function addWeeks(date: DateTime, n: number): DateTime {
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return date.plus({ weeks: n });
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}
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/**
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* Builds a fixed 6×7 (weeks × days, Monday-first) calendar grid covering
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* `month`, the same shape every month-picker UI in this app should use —
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* always 6 rows regardless of how many weeks the month actually spans, so
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* the grid never resizes/reflows switching between months. Leading/trailing
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* days from the adjacent month are included (a caller distinguishes them
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* with `day.hasSame(month, "month")`), not omitted.
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*/
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export function buildCalendarMonth(month: DateTime): DateTime[][] {
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const gridStart = getWeekStart(month.startOf("month"));
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const weeks: DateTime[][] = [];
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let cursor = gridStart;
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for (let week = 0; week < 6; week++) {
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const days: DateTime[] = [];
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for (let day = 0; day < 7; day++) {
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days.push(cursor);
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cursor = cursor.plus({ days: 1 });
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}
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weeks.push(days);
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}
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return weeks;
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}
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