Ayo
969ebba067
Reviewed-on: https://git.ayo.run/ayo/cozy-games/pulls/1 Co-authored-by: Ayo <ayo@ayco.io> Co-committed-by: Ayo <ayo@ayco.io>
55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
/**
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* Time-bucket keys for leaderboards, computed in UTC so every player shares the
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* same boundaries worldwide. Each key is a plain string denormalized onto a
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* score document, letting a "Today / Week / Month" query be a cheap equality
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* filter instead of a range scan.
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*/
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const pad = n => (n < 10 ? `0${n}` : `${n}`)
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/**
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* Calendar-day key, e.g. `2026-07-03`.
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* @param {Date} date
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* @returns {String}
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*/
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export const dayKey = date => {
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return `${date.getUTCFullYear()}-${pad(date.getUTCMonth() + 1)}-${pad(date.getUTCDate())}`
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}
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/**
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* Calendar-month key, e.g. `2026-07`.
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* @param {Date} date
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* @returns {String}
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*/
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export const monthKey = date => {
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return `${date.getUTCFullYear()}-${pad(date.getUTCMonth() + 1)}`
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}
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/**
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* ISO-8601 week key, e.g. `2026-W27`. Weeks start Monday and the week-numbering
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* year can differ from the calendar year around January 1st, so we derive the
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* year from the week's Thursday.
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* @param {Date} date
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* @returns {String}
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*/
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export const weekKey = date => {
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const d = new Date(Date.UTC(date.getUTCFullYear(), date.getUTCMonth(), date.getUTCDate()))
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const dayNum = d.getUTCDay() || 7
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d.setUTCDate(d.getUTCDate() + 4 - dayNum)
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const yearStart = new Date(Date.UTC(d.getUTCFullYear(), 0, 1))
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const week = Math.ceil((((d - yearStart) / 86400000) + 1) / 7)
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return `${d.getUTCFullYear()}-W${pad(week)}`
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}
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/**
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* All three bucket keys for a moment in time.
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* @param {Date} date
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* @returns {{ day: String, week: String, month: String }}
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*/
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export const buckets = date => {
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return {
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day: dayKey(date),
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week: weekKey(date),
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month: monthKey(date)
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}
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}
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