server/lib/time.js

Repository

wynajem_motorowek

Original path

server/lib/time.js

Role

SOURCE

Size

1349 bytes

Lines

45

SHA-256

74f138e013fd8bc298fdc19c31ff12cd0b2600b9ab5940c0dc490019f8f0cd3e

Displayed range

1–45

const DAY_START_MIN = 8 * 60;
const DAY_END_MIN = 20 * 60;

function parseDateKey(dateKey) {
  if (!/^\d{4}-\d{2}-\d{2}$/.test(dateKey || "")) return null;
  const date = new Date(`${dateKey}T00:00:00`);
  if (Number.isNaN(date.getTime())) return null;
  return date;
}

function parseTimeToMinutes(timeText) {
  if (!/^\d{2}:\d{2}$/.test(timeText || "")) return null;
  const [hh, mm] = timeText.split(":").map((part) => Number(part));
  if (!Number.isInteger(hh) || !Number.isInteger(mm)) return null;
  if (hh < 0 || hh > 23 || mm < 0 || mm > 59) return null;
  return hh * 60 + mm;
}

function minutesToTimeText(totalMinutes) {
  const hh = String(Math.floor(totalMinutes / 60)).padStart(2, "0");
  const mm = String(totalMinutes % 60).padStart(2, "0");
  return `${hh}:${mm}`;
}

function atDateAndMinutes(dateKey, totalMinutes) {
  return new Date(`${dateKey}T00:00:00`).getTime() + totalMinutes * 60_000;
}

function toIsoAtDateAndMinutes(dateKey, totalMinutes) {
  return new Date(atDateAndMinutes(dateKey, totalMinutes)).toISOString();
}

function overlap(aStartMs, aEndMs, bStartMs, bEndMs) {
  return aStartMs < bEndMs && aEndMs > bStartMs;
}

module.exports = {
  DAY_START_MIN,
  DAY_END_MIN,
  parseDateKey,
  parseTimeToMinutes,
  minutesToTimeText,
  toIsoAtDateAndMinutes,
  overlap,
};