44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
export function preferredScheduleSemester(semesters, date) {
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const items = (semesters || [])
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.filter(semester => semester?.startDate && semester?.endDate);
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const current = items.find(semester =>
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semester.startDate <= date && semester.endDate >= date
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);
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if (current) return current;
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const upcoming = items
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.filter(semester => semester.startDate > date)
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.sort((first, second) => first.startDate.localeCompare(second.startDate));
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if (upcoming.length) return upcoming[0];
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return items
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.filter(semester => semester.endDate < date)
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.sort((first, second) => second.endDate.localeCompare(first.endDate))[0] || null;
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}
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export function defaultSchedulePeriod(semesters, date, durationDays = 14) {
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const semester = preferredScheduleSemester(semesters, date);
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const startDate = semester && (date < semester.startDate || date > semester.endDate)
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? semester.startDate
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: date;
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const calculatedEnd = addIsoDays(startDate, Math.max(1, durationDays) - 1);
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return {
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semester,
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startDate,
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endDate: semester && calculatedEnd > semester.endDate
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? semester.endDate
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: calculatedEnd
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};
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}
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function addIsoDays(value, days) {
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const [year, month, day] = String(value).split('-').map(Number);
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const date = new Date(year, month - 1, day);
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date.setDate(date.getDate() + days);
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return [
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date.getFullYear(),
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String(date.getMonth() + 1).padStart(2, '0'),
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String(date.getDate()).padStart(2, '0')
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].join('-');
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}
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