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feat(calendar.ts): optimize getWeekNumber by using isoWeek

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Jakob Schlanstedt 2025-10-09 06:13:39 +02:00 committed by Jakob Schlanstedt
parent 89879a6851
commit 62e978068a
1 changed files with 3 additions and 65 deletions
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68
apps/client/src/widgets/buttons/calendar.ts
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@ -8,6 +8,7 @@ import options from "../../services/options.js";
import { Dropdown } from "bootstrap";
import type { EventData } from "../../components/app_context.js";
import dayjs, { Dayjs } from "dayjs";
import isoWeek from "dayjs/plugin/isoWeek.js";
import utc from "dayjs/plugin/utc.js";
import isSameOrAfter from "dayjs/plugin/isSameOrAfter.js";
import "../../stylesheets/calendar.css";
@ -15,6 +16,7 @@ import type { AttributeRow } from "@triliumnext/commons";
dayjs.extend(utc);
dayjs.extend(isSameOrAfter);
dayjs.extend(isoWeek);
const MONTHS = [
t("calendar.january"),
@ -246,71 +248,7 @@ export default class CalendarWidget extends RightDropdownButtonWidget {
}
getWeekNumber(date: Dayjs): number {
const year = date.year();
const dayOfWeek = (day: number) => (day - this.firstDayOfWeek + 7) % 7;
// Get first day of the year and adjust to first week start
const jan1 = date.clone().year(year).month(0).date(1);
const jan1Weekday = jan1.day();
const dayOffset = dayOfWeek(jan1Weekday);
let firstWeekStart = jan1.clone().subtract(dayOffset, 'day');
// Adjust based on week rule
switch (this.weekCalculationOptions.firstWeekType) {
case 1: { // ISO 8601: first week contains Thursday
const thursday = firstWeekStart.clone().add(3, 'day'); // Monday + 3 = Thursday
if (thursday.year() < year) {
firstWeekStart = firstWeekStart.add(7, 'day');
}
break;
}
case 2: { // minDaysInFirstWeek rule
const daysInFirstWeek = 7 - dayOffset;
if (daysInFirstWeek < this.weekCalculationOptions.minDaysInFirstWeek) {
firstWeekStart = firstWeekStart.add(7, 'day');
}
break;
}
// default case 0: week containing Jan 1 → already handled
}
const diffDays = date.startOf('day').diff(firstWeekStart.startOf('day'), 'day');
const weekNumber = Math.floor(diffDays / 7) + 1;
// Handle case when date is before first week start → belongs to last week of previous year
if (weekNumber <= 0) {
return this.getWeekNumber(date.subtract(1, 'day'));
}
// Handle case when date belongs to first week of next year
const nextYear = year + 1;
const jan1Next = date.clone().year(nextYear).month(0).date(1);
const jan1WeekdayNext = jan1Next.day();
const offsetNext = dayOfWeek(jan1WeekdayNext);
let nextYearWeekStart = jan1Next.clone().subtract(offsetNext, 'day');
switch (this.weekCalculationOptions.firstWeekType) {
case 1: {
const thursday = nextYearWeekStart.clone().add(3, 'day');
if (thursday.year() < nextYear) {
nextYearWeekStart = nextYearWeekStart.add(7, 'day');
}
break;
}
case 2: {
const daysInFirstWeek = 7 - offsetNext;
if (daysInFirstWeek < this.weekCalculationOptions.minDaysInFirstWeek) {
nextYearWeekStart = nextYearWeekStart.add(7, 'day');
}
break;
}
}
if (date.isSameOrAfter(nextYearWeekStart)) {
return 1;
}
return weekNumber;
return date.isoWeek();
}
async dropdownShown() {