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"use client"
import { useEffect, useRef, useState } from "react"
export function useCountdown({
timerId,
durationInSec,
onEnd = () => {},
}: {
timerId: string
durationInSec: number
onEnd: () => void
}) {
const intervalRef = useRef<NodeJS.Timer>()
const startedAt = useRef<Date>()
const [elapsedTimeInMs, setElapsedTimeInMs] = useState<number>(0)
const durationInMs = durationInSec * 1000
useEffect(() => {
clearInterval(intervalRef.current)
setElapsedTimeInMs(0)
startedAt.current = new Date()
intervalRef.current = setInterval(() => {
const now = new Date()
const newElapsedInMs = Math.min(durationInMs, now.getTime() - startedAt.current!.getTime())
setElapsedTimeInMs(newElapsedInMs)
if (elapsedTimeInMs >= durationInMs) {
console.log("end of timer")
clearInterval(intervalRef.current)
onEnd()
}
}, 100)
}, [timerId, durationInMs])
const remainingTimeInMs = Math.max(0, durationInMs - elapsedTimeInMs)
const progressRatio = elapsedTimeInMs / durationInMs
const progressPercent = progressRatio * 100
return {
elapsedTimeInMs,
remainingTimeInMs,
elapsedTimeInSec: Math.round(elapsedTimeInMs / 1000),
remainingTimeInSec: Math.round(remainingTimeInMs / 1000),
progressRatio,
progressPercent,
timeIsUp: remainingTimeInMs <= 0,
}
} |