import { useState, useEffect } from 'react';

interface CountdownTimerProps {
  initialSeconds: number;
  onComplete?: () => void;
}

export function CountDownTimer({
  initialSeconds,
  onComplete,
}: CountdownTimerProps) {
  const [secondsLeft, setSecondsLeft] = useState(initialSeconds);

  useEffect(() => {
    setSecondsLeft(initialSeconds);
  }, [initialSeconds]);

  useEffect(() => {
    if (secondsLeft <= 0) {
      onComplete?.();
      return;
    }
    const timer = setInterval(() => {
      setSecondsLeft((prev) => prev - 1);
    }, 1000);
    return () => clearInterval(timer);
  }, [secondsLeft, onComplete]);

  const toPersianDigits = (str: string) =>
    str.replace(/\d/g, (d: string) => '۰۱۲۳۴۵۶۷۸۹'[parseInt(d)]);

  const formatTime = (totalSeconds: number) => {
    const minutes = String(Math.floor(totalSeconds / 60)).padStart(2, '0');
    const seconds = String(totalSeconds % 60).padStart(2, '0');
    return toPersianDigits(`${minutes}:${seconds}`);
  };

  return <span>{formatTime(secondsLeft)}</span>;
}