import { useEffect, useState } from 'react'

/**
 * Hook for countdown seconds
 * @param {int} initialCount
 * @param {boolean} start
 */
export function useCountdownTimer (initialCount : number, start : boolean) {
  const [count, setCount] = useState(initialCount)

  useEffect(() => {
    if (start) {
      const secondsLeft = setInterval(() => {
        setCount(c => c - (c === 0 ? 0 : 1))
      }, 1000)
      return () => clearInterval(secondsLeft)
    }
  }, [start])

  return [
    count,
    setCount,
    /** reset */
    () => { setCount(initialCount) }
  ]
}