36 lines
863 B
TypeScript
36 lines
863 B
TypeScript
import { get } from 'svelte/store'
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import { dbClockDrift } from './stores'
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import { JobService } from './gen'
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import pLimit from 'p-limit'
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function subtractSeconds(date: Date, seconds: number): Date {
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date.setSeconds(date.getSeconds() - seconds)
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return date
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}
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function adjustDate(drift: number): Date {
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return new Date(Date.now() + drift)
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}
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export async function computeDrift() {
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if (get(dbClockDrift) == undefined) {
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const now = Date.now()
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const dbClock = await JobService.getDbClock()
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dbClockDrift.set(dbClock - now)
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}
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}
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export function forLater(scheduledString: string): boolean {
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return getDbClockNow() < subtractSeconds(new Date(scheduledString), 5)
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}
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const limit = pLimit(1)
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export function getDbClockNow() {
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let drift = get(dbClockDrift)
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if (drift == undefined) {
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limit(() => computeDrift())
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drift = 0
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}
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return adjustDate(drift)
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}
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