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import dayjs from 'dayjs';
import {getCurrentLocale} from '../utils.js';
// Returns an array of millisecond-timestamps of start-of-week days (Sundays)
export function startDaysBetween(startDate, endDate) {
// Ensure the start date is a Sunday
while (startDate.getDay() !== 0) {
startDate.setDate(startDate.getDate() + 1);
}
const start = dayjs(startDate);
const end = dayjs(endDate);
const startDays = [];
let current = start;
while (current.isBefore(end)) {
startDays.push(current.valueOf());
// we are adding 7 * 24 hours instead of 1 week because we don't want
// date library to use local time zone to calculate 1 week from now.
// local time zone is problematic because of daylight saving time (dst)
// used on some countries
current = current.add(7 * 24, 'hour');
}
return startDays;
}
export function firstStartDateAfterDate(inputDate) {
if (!(inputDate instanceof Date)) {
throw new Error('Invalid date');
}
const dayOfWeek = inputDate.getDay();
const daysUntilSunday = 7 - dayOfWeek;
const resultDate = new Date(inputDate.getTime());
resultDate.setDate(resultDate.getDate() + daysUntilSunday);
return resultDate.valueOf();
}
export function fillEmptyStartDaysWithZeroes(startDays, data) {
const result = {};
for (const startDay of startDays) {
result[startDay] = data[startDay] || {'week': startDay, 'additions': 0, 'deletions': 0, 'commits': 0};
}
return Object.values(result);
}
let dateFormat;
// format a Date object to document's locale, but with 24h format from user's current locale because this
// option is a personal preference of the user, not something that the document's locale should dictate.
export function formatDatetime(date) {
if (!dateFormat) {
// TODO: replace `hour12` with `Intl.Locale.prototype.getHourCycles` once there is broad browser support
dateFormat = new Intl.DateTimeFormat(getCurrentLocale(), {
day: 'numeric',
month: 'short',
year: 'numeric',
hour: 'numeric',
hour12: !Number.isInteger(Number(new Intl.DateTimeFormat([], {hour: 'numeric'}).format())),
minute: '2-digit',
timeZoneName: 'short',
});
}
return dateFormat.format(date);
}
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